releaser: Bump versions for release of 0.159.0

[ci skip]
docs: Update docs.yaml
2026-08-27 16:58:53 +00:00 · 2026-03-23 18:16:59 +00:00 · 2026-03-23 18:27:14 +01:00 · 2026-03-23 18:25:55 +01:00 · 2026-03-23 18:21:25 +01:00 · 2026-03-23 18:13:50 +01:00
1102 changed files with 24207 additions and 9984 deletions
@@ -4,7 +4,7 @@ parameters:
 defaults: &defaults
  resource_class: large
  docker:
-      - image: bepsays/ci-hugoreleaser:1.22500.20400
+      - image: bepsays/ci-hugoreleaser:1.22600.20100
 environment: &buildenv
      GOMODCACHE: /root/project/gomodcache
 version: 2
@@ -58,7 +58,7 @@ jobs:
    environment:
        <<: [*buildenv]
    docker:
-    - image: bepsays/ci-hugoreleaser-linux-arm64:1.22500.20400
+    - image: bepsays/ci-hugoreleaser-linux-arm64:1.22600.20100
    steps:
      - *restore-cache
      - &attach-workspace
@@ -1,10 +0,0 @@
-🛑 Before submitting this PR
-
-All PRs must be linked to an Issue in this repository, and that Issue must be approved by a project maintainer:
-
- For a bug, approval means that the "needs triage" label is removed.
- For a proposal, approval means that the "proposal" label is replaced by an "enhancement" label.
-
-PRs without a linked, approved Issue will be closed immediately.
-
-Please review the contribution guide (CONTRIBUTING.md) to understand commit message guidelines and AI assistance disclosures.
@@ -1,22 +0,0 @@
-name: AI Detection
-on:
-  # Use pull_request_target instead of pull_request (we need the secrets.OPENAI_API_KEY to be available for forks)
-  pull_request_target:
-    types: [opened, ready_for_review]
-permissions:
-  contents: read
-  pull-requests: write
-jobs:
-  detect-ai:
-    runs-on: ubuntu-latest
-    if: ${{ !github.event.pull_request.draft }}
-    steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
-      - name: AI Watchdog
-        uses: bep/ai-watchdog@995475dd81767f8035dc2c943e9230918d06caca # temporary fork (probably)
-        with:
-          openai-api-key: ${{ secrets.OPENAI_API_KEY }}
-          pr-label: AI Suspect
-          fail-when-confident: false
-          # CSV list.
-          pr-user-logins-skip: dependabot[bot]
@@ -16,7 +16,7 @@ jobs:
  test:
    strategy:
      matrix:
-        go-version: [1.24.x, 1.25.x]
+        go-version: [1.25.x, 1.26.x]
        os: [ubuntu-latest, windows-latest] # macos disabled for now because of disk space issues.
    runs-on: ${{ matrix.os }}
    steps:
@@ -106,7 +106,10 @@ jobs:
        run: go install honnef.co/go/tools/cmd/staticcheck@latest
      - if: matrix.os == 'ubuntu-latest'
        name: Run staticcheck
-        run: staticcheck ./...
+        run: |
+          export STATICCHECK_CACHE="${{ runner.temp }}/staticcheck"
+          staticcheck ./...
+          rm -rf ${{ runner.temp }}/staticcheck
      - if: matrix.os != 'windows-latest'
        name: Check
        run: |
@@ -118,16 +121,14 @@ jobs:
        # See issue #11052. We limit the build to regular test (no -race flag) on Windows for now.
        name: Test
        run: |
-          mage -v test;
+          mage -v test
        env:
          HUGO_BUILD_TAGS: extended,withdeploy
-      - name: Build tags
-        run: |
-          go install -tags extended
      - if: matrix.os == 'ubuntu-latest'
        name: Build for dragonfly
        run: |
          go install
+          go clean -i -cache
        env:
          GOARCH: amd64
          GOOS: dragonfly
@@ -3,4 +3,5 @@
 imports.*
 dist/
 public/
-.DS_Store 
+.DS_Store 
+cache/filecache/_gen/
@@ -0,0 +1 @@
+tpl/tplimpl/embedded/templates/**
@@ -0,0 +1,17 @@
+* Brevity is good.
+* Assume that the maintainers and readers of the code you write are Go experts:
+   * Don't use comments to explain the obvious.
+   * Use self-explanatory variable and function names.
+   * Use short variable names when the context is clear.
+* If you need to add temporary debug printing, use `hdebug.Printf`.[^1]
+* Never export symbols that's not needed outside of the package.
+* Avoid global state at (almost) all cost.
+* This is a project with a long history; assume that a similiar problem has been solved before, look hard for helper functions before creating new ones.
+* In tests, use `qt` matchers (e.g. `b.Assert(err, qt.ErrorMatches, ...)`) instead of raw `if`/`t.Fatal` checks.
+* In tests, always use the latest Hugo specification, e.g. for layouts, it's `layouts/page.html` and not `layouts/_default/single.html`, `layouts/list.html` and not `layouts/_default/list.html`
+* Brevity is good. This applies to code, comments and commit messages. Don't write a novel.
+* Use `./check.sh ./somepackage/...` when iterating.
+* Use `./check.sh` when you're done.
+
+
+[^1]: CI build fail if you forget to remove the debug printing.
@@ -0,0 +1 @@
+@AGENTS.md
@@ -77,7 +77,7 @@ To make the contribution process as seamless as possible, we ask for the followi
    * Run `go fmt`.
    * Add documentation if you are adding new features or changing functionality.  The docs site lives in `/docs`.
    * Squash your commits into a single commit. `git rebase -i`. It’s okay to force update your pull request with `git push -f`.
-    * Ensure that `mage check` succeeds. [Travis CI](https://travis-ci.org/gohugoio/hugo) (Windows, Linux and macOS) will fail the build if `mage check` fails.
+    * Ensure that `./check.sh` succeeds. Note that some tests are skipped when running locally, some because they are slow. To run these locally,  do `CI_LOCAL=true ./check.sh ./somepackage/...`.
    * Follow the **Git Commit Message Guidelines** below.

 ## AI Assistance Notice
@@ -88,7 +88,7 @@ An example disclosure:

 > This PR was written primarily by Claude Code.

-When using AI assistance, we expect contributors to understand the code that is produced and be able to answer critical questions about it.
+When using AI assistance, we expect contributors to understand the code that is produced and be able to answer critical questions about it. Also, AI contributions from non-maintainers needs to have a fairly narrow scope (e.g. a bug fix), as we have limited review capacity.

 ### Git Commit Message Guidelines

@@ -2,7 +2,7 @@
 # Twitter:      https://twitter.com/gohugoio
 # Website:      https://gohugo.io/

-ARG GO_VERSION="1.25"
+ARG GO_VERSION="1.26"
 ARG ALPINE_VERSION="3.22"
 ARG DART_SASS_VERSION="1.79.3"

@@ -65,7 +65,9 @@ RUN apk add --no-cache \
    git \
    runuser \
    nodejs \
-    npm
+    npm \
+    openssh-client \
+    tar

 RUN mkdir -p /var/hugo/bin /cache && \
    addgroup -Sg 1000 hugo && \
@@ -52,7 +52,7 @@ Use Hugo's embedded web server during development to instantly see changes to co

 Hugo's fast asset pipelines include:

- Image processing &ndash; Convert, resize, crop, rotate, adjust colors, apply filters, overlay text and images, and extract EXIF data
+- Image processing &ndash; Convert, resize, crop, rotate, adjust colors, apply filters, overlay text and images, and extract metadata
 - JavaScript bundling &ndash; Transpile TypeScript and JSX to JavaScript, bundle, tree shake, minify, create source maps, and perform SRI hashing.
 - Sass processing &ndash; Transpile Sass to CSS, bundle, tree shake, minify, create source maps, perform SRI hashing, and integrate with PostCSS
 - Tailwind CSS processing &ndash; Compile Tailwind CSS utility classes into standard CSS, bundle, tree shake, optimize, minify, perform SRI hashing, and integrate with PostCSS
@@ -65,8 +65,6 @@ See the [features] section of the documentation for a comprehensive summary of H

 <p>&nbsp;</p>
 <p float="left">
-  <a href="https://www.linode.com/?utm_campaign=hugosponsor&utm_medium=banner&utm_source=hugogithub" target="_blank"><img src="https://raw.githubusercontent.com/gohugoio/hugoDocs/master/assets/images/sponsors/linode-logo_standard_light_medium.png" width="200" alt="Linode"></a>
-&nbsp;&nbsp;&nbsp;
  <a href="https://www.jetbrains.com/go/?utm_source=OSS&utm_medium=referral&utm_campaign=hugo" target="_blank"><img src="https://raw.githubusercontent.com/gohugoio/hugoDocs/master/assets/images/sponsors/goland.svg" width="200" alt="The complete IDE crafted for professional Go developers."></a>
  &nbsp;&nbsp;&nbsp;
    <a href="https://cloudcannon.com/hugo-cms/?utm_campaign=HugoSponsorship&utm_source=sponsor&utm_content=gohugo" target="_blank"><img src="https://raw.githubusercontent.com/gohugoio/hugoDocs/master/assets/images/sponsors/cloudcannon-cms-logo.svg" width="200" alt="CloudCannon"></a>
@@ -74,21 +72,17 @@ See the [features] section of the documentation for a comprehensive summary of H

 ## Editions

-Hugo is available in three editions: standard, extended, and extended/deploy. While the standard edition provides core functionality, the extended and extended/deploy editions offer advanced features.
+Hugo offers a standard edition with core features, plus extended and extended/deploy editions with more. Use the standard edition unless you need the features below.

 Feature|extended edition|extended/deploy edition
 :--|:-:|:-:
-Encode to the WebP format when [processing images]. You can decode WebP images with any edition.|:heavy_check_mark:|:heavy_check_mark:
-[Transpile Sass to CSS] using the embedded LibSass transpiler. You can use the [Dart Sass] transpiler with any edition.|:heavy_check_mark:|:heavy_check_mark:
+[Transpile Sass to CSS] via embedded LibSass. Note that embedded LibSass was deprecated in v0.153.0 and will be removed in a future release. Use the [Dart Sass] transpiler instead, which is compatible with any edition.|:heavy_check_mark:|:heavy_check_mark:
 Deploy your site directly to a Google Cloud Storage bucket, an AWS S3 bucket, or an Azure Storage container. See&nbsp;[details].|:x:|:heavy_check_mark:

 [dart sass]: https://gohugo.io/functions/css/sass/#dart-sass
-[processing images]: https://gohugo.io/content-management/image-processing/
 [transpile sass to css]: https://gohugo.io/functions/css/sass/
 [details]: https://gohugo.io/hosting-and-deployment/hugo-deploy/

-Unless your specific deployment needs require the extended/deploy edition, we recommend the extended edition.
-
 ## Installation

 Install Hugo from a [prebuilt binary], package manager, or package repository. Please see the installation instructions for your operating system:
@@ -162,6 +156,16 @@ If there is sufficient interest, [create a proposal]. Do not submit a pull reque

 For a complete guide to contributing to Hugo, see the [Contribution Guide](CONTRIBUTING.md).

+## License
+
+For the Hugo source code, see [LICENSE](/LICENSE).
+
+We also bundle some libraries in binary/WASM form:
+
+* [libwebp](https://github.com/webmproject/libwebp), [BSD-3-Clause license](https://github.com/webmproject/libwebp?tab=BSD-3-Clause-1-ov-file#readme)
+* [Katex](https://github.com/KaTeX/KaTeX), [MIT license](https://github.com/KaTeX/KaTeX?tab=MIT-1-ov-file#readme)
+* [QuickJS](https://github.com/bellard/quickjs?tab=License-1-ov-file#readme), [License](https://github.com/bellard/quickjs?tab=License-1-ov-file#readme)
+
 ## Dependencies

 Hugo stands on the shoulders of great open source libraries. Run `hugo env --logLevel info` to display a list of dependencies.
@@ -171,51 +175,55 @@ Hugo stands on the shoulders of great open source libraries. Run `hugo env --log

 ```text
 github.com/BurntSushi/locker="v0.0.0-20171006230638-a6e239ea1c69"
-github.com/PuerkitoBio/goquery="v1.10.1"
-github.com/alecthomas/chroma/v2="v2.15.0"
-github.com/andybalholm/cascadia="v1.3.3"
-github.com/armon/go-radix="v1.0.1-0.20221118154546-54df44f2176c"
+github.com/JohannesKaufmann/dom="v0.2.0"
+github.com/JohannesKaufmann/html-to-markdown/v2="v2.5.0"
+github.com/alecthomas/chroma/v2="v2.21.1"
+github.com/aymerick/douceur="v0.2.0"
 github.com/bep/clocks="v0.5.0"
 github.com/bep/debounce="v1.2.0"
-github.com/bep/gitmap="v1.6.0"
+github.com/bep/gitmap="v1.9.0"
 github.com/bep/goat="v0.5.0"
-github.com/bep/godartsass/v2="v2.3.2"
+github.com/bep/godartsass/v2="v2.5.0"
 github.com/bep/golibsass="v1.2.0"
-github.com/bep/gowebp="v0.3.0"
-github.com/bep/imagemeta="v0.8.4"
-github.com/bep/lazycache="v0.7.0"
+github.com/bep/goportabletext="v0.1.0"
+github.com/bep/helpers="v0.6.0"
+github.com/bep/imagemeta="v0.12.0"
+github.com/bep/lazycache="v0.8.0"
 github.com/bep/logg="v0.4.0"
 github.com/bep/mclib="v1.20400.20402"
-github.com/bep/overlayfs="v0.9.2"
-github.com/bep/simplecobra="v0.5.0"
+github.com/bep/overlayfs="v0.10.0"
+github.com/bep/simplecobra="v0.6.1"
+github.com/bep/textandbinarywriter="v0.0.0-20251212174530-cd9f0732f60f"
 github.com/bep/tmc="v0.5.1"
+github.com/bits-and-blooms/bitset="v1.24.4"
 github.com/cespare/xxhash/v2="v2.3.0"
 github.com/clbanning/mxj/v2="v2.7.0"
-github.com/cpuguy83/go-md2man/v2="v2.0.4"
+github.com/clipperhouse/displaywidth="v0.6.0"
+github.com/clipperhouse/stringish="v0.1.1"
+github.com/clipperhouse/uax29/v2="v2.3.0"
+github.com/cpuguy83/go-md2man/v2="v2.0.6"
 github.com/disintegration/gift="v1.2.1"
 github.com/dlclark/regexp2="v1.11.5"
-github.com/dop251/goja="v0.0.0-20250125213203-5ef83b82af17"
-github.com/evanw/esbuild="v0.24.2"
+github.com/evanw/esbuild="v0.27.2"
 github.com/fatih/color="v1.18.0"
 github.com/frankban/quicktest="v1.14.6"
-github.com/fsnotify/fsnotify="v1.8.0"
-github.com/getkin/kin-openapi="v0.129.0"
-github.com/ghodss/yaml="v1.0.0"
+github.com/fsnotify/fsnotify="v1.9.0"
+github.com/getkin/kin-openapi="v0.133.0"
 github.com/go-openapi/jsonpointer="v0.21.0"
 github.com/go-openapi/swag="v0.23.0"
-github.com/go-sourcemap/sourcemap="v2.1.4+incompatible"
 github.com/gobuffalo/flect="v1.0.3"
 github.com/gobwas/glob="v0.2.3"
-github.com/gohugoio/go-i18n/v2="v2.1.3-0.20230805085216-e63c13218d0e"
-github.com/gohugoio/hashstructure="v0.5.0"
-github.com/gohugoio/httpcache="v0.7.0"
-github.com/gohugoio/hugo-goldmark-extensions/extras="v0.2.0"
-github.com/gohugoio/hugo-goldmark-extensions/passthrough="v0.3.0"
+github.com/goccy/go-yaml="v1.19.1"
+github.com/gohugoio/go-i18n/v2="v2.1.3-0.20251018145728-cfcc22d823c6"
+github.com/gohugoio/go-radix="v1.2.0"
+github.com/gohugoio/hashstructure="v0.6.0"
+github.com/gohugoio/httpcache="v0.8.0"
+github.com/gohugoio/hugo-goldmark-extensions/extras="v0.5.0"
+github.com/gohugoio/hugo-goldmark-extensions/passthrough="v0.3.1"
 github.com/gohugoio/locales="v0.14.0"
 github.com/gohugoio/localescompressed="v1.0.1"
-github.com/golang/freetype="v0.0.0-20170609003504-e2365dfdc4a0"
-github.com/google/go-cmp="v0.6.0"
-github.com/google/pprof="v0.0.0-20250208200701-d0013a598941"
+github.com/google/go-cmp="v0.7.0"
+github.com/gorilla/css="v1.0.1"
 github.com/gorilla/websocket="v1.5.3"
 github.com/hairyhenderson/go-codeowners="v0.7.0"
 github.com/hashicorp/golang-lru/v2="v2.0.7"
@@ -224,58 +232,57 @@ github.com/josharian/intern="v1.0.0"
 github.com/kr/pretty="v0.3.1"
 github.com/kr/text="v0.2.0"
 github.com/kyokomi/emoji/v2="v2.2.13"
-github.com/lucasb-eyer/go-colorful="v1.2.0"
 github.com/mailru/easyjson="v0.7.7"
 github.com/makeworld-the-better-one/dither/v2="v2.4.0"
 github.com/marekm4/color-extractor="v1.2.1"
 github.com/mattn/go-colorable="v0.1.13"
 github.com/mattn/go-isatty="v0.0.20"
-github.com/mattn/go-runewidth="v0.0.9"
-github.com/mazznoer/csscolorparser="v0.1.5"
+github.com/mattn/go-runewidth="v0.0.19"
+github.com/microcosm-cc/bluemonday="v1.0.27"
 github.com/mitchellh/mapstructure="v1.5.1-0.20231216201459-8508981c8b6c"
 github.com/mohae/deepcopy="v0.0.0-20170929034955-c48cc78d4826"
 github.com/muesli/smartcrop="v0.3.0"
-github.com/niklasfasching/go-org="v1.7.0"
-github.com/oasdiff/yaml3="v0.0.0-20241210130736-a94c01f36349"
-github.com/oasdiff/yaml="v0.0.0-20241210131133-6b86fb107d80"
-github.com/olekukonko/tablewriter="v0.0.5"
+github.com/niklasfasching/go-org="v1.9.1"
+github.com/oasdiff/yaml3="v0.0.0-20250309153720-d2182401db90"
+github.com/oasdiff/yaml="v0.0.0-20250309154309-f31be36b4037"
+github.com/olekukonko/cat="v0.0.0-20250911104152-50322a0618f6"
+github.com/olekukonko/errors="v1.1.0"
+github.com/olekukonko/ll="v0.1.3"
+github.com/olekukonko/tablewriter="v1.1.2"
 github.com/pbnjay/memory="v0.0.0-20210728143218-7b4eea64cf58"
-github.com/pelletier/go-toml/v2="v2.2.3"
+github.com/pelletier/go-toml/v2="v2.2.4"
 github.com/perimeterx/marshmallow="v1.1.5"
 github.com/pkg/browser="v0.0.0-20240102092130-5ac0b6a4141c"
 github.com/pkg/errors="v0.9.1"
-github.com/rivo/uniseg="v0.4.7"
-github.com/rogpeppe/go-internal="v1.13.1"
+github.com/rogpeppe/go-internal="v1.14.1"
 github.com/russross/blackfriday/v2="v2.1.0"
-github.com/sass/libsass="3.6.6"
-github.com/spf13/afero="v1.11.0"
-github.com/spf13/cast="v1.7.1"
-github.com/spf13/cobra="v1.8.1"
+github.com/sass/dart-sass/compiler="1.97.1"
+github.com/sass/dart-sass/implementation="1.97.1"
+github.com/sass/dart-sass/protocol="3.2.0"
+github.com/spf13/afero="v1.15.0"
+github.com/spf13/cast="v1.10.0"
+github.com/spf13/cobra="v1.10.2"
 github.com/spf13/fsync="v0.10.1"
-github.com/spf13/pflag="v1.0.6"
-github.com/tdewolff/minify/v2="v2.20.37"
-github.com/tdewolff/parse/v2="v2.7.15"
-github.com/tetratelabs/wazero="v1.8.2"
-github.com/webmproject/libwebp="v1.3.2"
-github.com/yuin/goldmark-emoji="v1.0.4"
-github.com/yuin/goldmark="v1.7.8"
+github.com/spf13/pflag="v1.0.9"
+github.com/tdewolff/minify/v2="v2.24.8"
+github.com/tdewolff/parse/v2="v2.8.5"
+github.com/tetratelabs/wazero="v1.10.1"
+github.com/webmproject/libwebp="v1.6.0"
+github.com/woodsbury/decimal128="v1.3.0"
+github.com/yuin/goldmark-emoji="v1.0.6"
+github.com/yuin/goldmark="v1.7.13"
 go.uber.org/automaxprocs="v1.5.3"
-golang.org/x/crypto="v0.33.0"
-golang.org/x/exp="v0.0.0-20250210185358-939b2ce775ac"
-golang.org/x/image="v0.24.0"
-golang.org/x/mod="v0.23.0"
-golang.org/x/net="v0.35.0"
-golang.org/x/sync="v0.11.0"
-golang.org/x/sys="v0.30.0"
-golang.org/x/text="v0.22.0"
-golang.org/x/tools="v0.30.0"
-golang.org/x/xerrors="v0.0.0-20240903120638-7835f813f4da"
-gonum.org/v1/plot="v0.15.0"
-google.golang.org/protobuf="v1.36.5"
-gopkg.in/yaml.v2="v2.4.0"
+go.yaml.in/yaml/v3="v3.0.4"
+golang.org/x/crypto="v0.46.0"
+golang.org/x/image="v0.34.0"
+golang.org/x/mod="v0.31.0"
+golang.org/x/net="v0.48.0"
+golang.org/x/sync="v0.19.0"
+golang.org/x/sys="v0.39.0"
+golang.org/x/text="v0.32.0"
+golang.org/x/tools="v0.40.0"
+google.golang.org/protobuf="v1.36.10"
 gopkg.in/yaml.v3="v3.0.1"
-oss.terrastruct.com/d2="v0.6.9"
-oss.terrastruct.com/util-go="v0.0.0-20241005222610-44c011a04896"
 rsc.io/qr="v0.2.0"
 software.sslmate.com/src/go-pkcs12="v0.2.0"
 ```
@@ -69,7 +69,7 @@ func New(opts Options) *Cache {

 	infol := opts.Log.InfoCommand("dynacache")

-	evictedIdentities := collections.NewStack[KeyIdentity]()
+	evictedIdentities := collections.NewStackThreadSafe[KeyIdentity]()

 	onEvict := func(k, v any) {
 		if !opts.Watching {
@@ -129,7 +129,7 @@ type Cache struct {
 	partitions map[string]PartitionManager

 	onEvict           func(k, v any)
-	evictedIdentities *collections.Stack[KeyIdentity]
+	evictedIdentities *collections.StackThreadSafe[KeyIdentity]

 	opts  Options
 	infol logg.LevelLogger
@@ -1,4 +1,4 @@
-// Copyright 2024 The Hugo Authors. All rights reserved.
+// Copyright 2026 The Hugo Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -16,6 +16,7 @@ package filecache
 import (
 	"bytes"
 	"errors"
+	"fmt"
 	"io"
 	"os"
 	"path/filepath"
@@ -45,16 +46,12 @@ const (
 type Cache struct {
 	Fs afero.Fs

-	// Max age for items in this cache. Negative duration means forever,
-	// 0 is effectively turning this cache off.
-	maxAge time.Duration
+	cfg FileCacheConfig

-	// When set, we just remove this entire root directory on expiration.
-	pruneAllRootDir string
-
-	nlocker *lockTracker
+	entryLocker *lockTracker

 	initOnce sync.Once
+	isInited bool
 	initErr  error
 }

@@ -88,12 +85,15 @@ type ItemInfo struct {
 }

 // NewCache creates a new file cache with the given filesystem and max age.
-func NewCache(fs afero.Fs, maxAge time.Duration, pruneAllRootDir string) *Cache {
+func NewCache(fs afero.Fs, cfg FileCacheConfig) *Cache {
+	if err := cfg.init(); err != nil {
+		panic(fmt.Sprintf("invalid cache config: %s", err))
+	}
+
 	return &Cache{
-		Fs:              fs,
-		nlocker:         &lockTracker{Locker: locker.NewLocker(), seen: make(map[string]struct{})},
-		maxAge:          maxAge,
-		pruneAllRootDir: pruneAllRootDir,
+		Fs:          fs,
+		entryLocker: &lockTracker{Locker: locker.NewLocker(), seen: make(map[string]struct{})},
+		cfg:         cfg,
 	}
 }

@@ -109,9 +109,15 @@ func (l *lockedFile) Close() error {
 }

 func (c *Cache) init() error {
+	if c == nil {
+		panic("cache is nil")
+	}
+
 	c.initOnce.Do(func() {
+		c.isInited = true
 		// Create the base dir if it does not exist.
 		if err := c.Fs.MkdirAll("", 0o777); err != nil && !os.IsExist(err) {
+			err = fmt.Errorf("failled to create base cache directory: %s", err)
 			c.initErr = err
 		}
 	})
@@ -126,19 +132,19 @@ func (c *Cache) WriteCloser(id string) (ItemInfo, io.WriteCloser, error) {
 	}

 	id = cleanID(id)
-	c.nlocker.Lock(id)
+	c.entryLocker.Lock(id)

 	info := ItemInfo{Name: id}

 	f, err := helpers.OpenFileForWriting(c.Fs, id)
 	if err != nil {
-		c.nlocker.Unlock(id)
+		c.entryLocker.Unlock(id)
 		return info, nil, err
 	}

 	return info, &lockedFile{
 		File:   f,
-		unlock: func() { c.nlocker.Unlock(id) },
+		unlock: func() { c.entryLocker.Unlock(id) },
 	}, nil
 }

@@ -156,8 +162,8 @@ func (c *Cache) ReadOrCreate(id string,

 	id = cleanID(id)

-	c.nlocker.Lock(id)
-	defer c.nlocker.Unlock(id)
+	c.entryLocker.Lock(id)
+	defer c.entryLocker.Unlock(id)

 	info = ItemInfo{Name: id}

@@ -186,9 +192,9 @@ func (c *Cache) ReadOrCreate(id string,
 // NamedLock locks the given id. The lock is released when the returned function is called.
 func (c *Cache) NamedLock(id string) func() {
 	id = cleanID(id)
-	c.nlocker.Lock(id)
+	c.entryLocker.Lock(id)
 	return func() {
-		c.nlocker.Unlock(id)
+		c.entryLocker.Unlock(id)
 	}
 }

@@ -201,8 +207,8 @@ func (c *Cache) GetOrCreate(id string, create func() (io.ReadCloser, error)) (It
 	}
 	id = cleanID(id)

-	c.nlocker.Lock(id)
-	defer c.nlocker.Unlock(id)
+	c.entryLocker.Lock(id)
+	defer c.entryLocker.Unlock(id)

 	info := ItemInfo{Name: id}

@@ -220,7 +226,7 @@ func (c *Cache) GetOrCreate(id string, create func() (io.ReadCloser, error)) (It
 		return info, nil, err
 	}

-	if c.maxAge == 0 {
+	if c.cfg.MaxAge == 0 {
 		// No caching.
 		return info, hugio.ToReadCloser(r), nil
 	}
@@ -231,6 +237,40 @@ func (c *Cache) GetOrCreate(id string, create func() (io.ReadCloser, error)) (It
 		c.writeReader(id, io.TeeReader(r, &buff))
 }

+// AbsFilenameFromID returns the filename for the given id in the cache.
+// This will be an absolute path.
+func (c *Cache) AbsFilenameFromID(id string) string {
+	return filepath.Join(c.cfg.DirCompiled, cleanID(id))
+}
+
+// GetOrCreateInfo tries to get the item info with the given id from cache. If not found or expired, create will
+// be invoked with the id. The create function is expected to create the cache item with the given id. The returned ItemInfo will have the id as Name.
+// This method is protected by a named lock using the given id as identifier.
+func (c *Cache) GetOrCreateInfo(id string, create func(id string) error) (ItemInfo, error) {
+	if err := c.init(); err != nil {
+		return ItemInfo{}, err
+	}
+
+	id = cleanID(id)
+
+	c.entryLocker.Lock(id)
+	defer c.entryLocker.Unlock(id)
+
+	info := ItemInfo{Name: id}
+
+	if !c.removeIfNeeded(id) {
+		// The file exists and is not expired, so we consider it a cache hit.
+		return info, nil
+	}
+
+	if err := create(id); err != nil {
+		c.remove(id)
+		return info, err
+	}
+
+	return info, nil
+}
+
 func (c *Cache) writeReader(id string, r io.Reader) error {
 	dir := filepath.Dir(id)
 	if dir != "" {
@@ -254,8 +294,8 @@ func (c *Cache) GetOrCreateBytes(id string, create func() ([]byte, error)) (Item
 	}
 	id = cleanID(id)

-	c.nlocker.Lock(id)
-	defer c.nlocker.Unlock(id)
+	c.entryLocker.Lock(id)
+	defer c.entryLocker.Unlock(id)

 	info := ItemInfo{Name: id}

@@ -275,7 +315,7 @@ func (c *Cache) GetOrCreateBytes(id string, create func() ([]byte, error)) (Item
 		return info, nil, err
 	}

-	if c.maxAge == 0 {
+	if c.cfg.MaxAge == 0 {
 		return info, b, nil
 	}

@@ -286,15 +326,39 @@ func (c *Cache) GetOrCreateBytes(id string, create func() ([]byte, error)) (Item
 	return info, b, nil
 }

+// SetBytes sets the file content with the given id in the cache.
+func (c *Cache) SetBytes(id string, data []byte) error {
+	if err := c.init(); err != nil {
+		return err
+	}
+	id = cleanID(id)
+
+	c.entryLocker.Lock(id)
+	defer c.entryLocker.Unlock(id)
+
+	if c.cfg.MaxAge == 0 {
+		// No caching.
+		return nil
+	}
+
+	return c.writeReader(id, bytes.NewReader(data))
+}
+
 // GetBytes gets the file content with the given id from the cache, nil if none found.
-func (c *Cache) GetBytes(id string) (ItemInfo, []byte, error) {
+func (c *Cache) GetBytes(id string) ([]byte, error) {
+	_, b, err := c.GetItemBytes(id)
+	return b, err
+}
+
+// GetItemBytes gets the ItemInfo and file content with the given id from the cache, nil if none found.
+func (c *Cache) GetItemBytes(id string) (ItemInfo, []byte, error) {
 	if err := c.init(); err != nil {
 		return ItemInfo{}, nil, err
 	}
 	id = cleanID(id)

-	c.nlocker.Lock(id)
-	defer c.nlocker.Unlock(id)
+	c.entryLocker.Lock(id)
+	defer c.entryLocker.Unlock(id)

 	info := ItemInfo{Name: id}

@@ -314,8 +378,8 @@ func (c *Cache) Get(id string) (ItemInfo, io.ReadCloser, error) {
 	}
 	id = cleanID(id)

-	c.nlocker.Lock(id)
-	defer c.nlocker.Unlock(id)
+	c.entryLocker.Lock(id)
+	defer c.entryLocker.Unlock(id)

 	info := ItemInfo{Name: id}

@@ -324,10 +388,23 @@ func (c *Cache) Get(id string) (ItemInfo, io.ReadCloser, error) {
 	return info, r, nil
 }

+// removeIfNeeded checks if the file with the given id should be re-created.
+func (c *Cache) removeIfNeeded(id string) bool {
+	if c.cfg.MaxAge == 0 {
+		// No caching, remove.
+		c.remove(id)
+		return true
+	}
+	if removed, err := c.removeIfExpired(id); err != nil || removed {
+		return true
+	}
+	return false
+}
+
 // getOrRemove gets the file with the given id. If it's expired, it will
 // be removed.
 func (c *Cache) getOrRemove(id string) hugio.ReadSeekCloser {
-	if c.maxAge == 0 {
+	if c.cfg.MaxAge == 0 {
 		// No caching.
 		return nil
 	}
@@ -345,7 +422,7 @@ func (c *Cache) getOrRemove(id string) hugio.ReadSeekCloser {
 }

 func (c *Cache) getBytesAndRemoveIfExpired(id string) ([]byte, bool) {
-	if c.maxAge == 0 {
+	if c.cfg.MaxAge == 0 {
 		// No caching.
 		return nil, false
 	}
@@ -370,7 +447,7 @@ func (c *Cache) getBytesAndRemoveIfExpired(id string) ([]byte, bool) {
 }

 func (c *Cache) removeIfExpired(id string) (bool, error) {
-	if c.maxAge <= 0 {
+	if c.cfg.MaxAge <= 0 {
 		return false, nil
 	}

@@ -380,29 +457,37 @@ func (c *Cache) removeIfExpired(id string) (bool, error) {
 	}

 	if c.isExpired(fi.ModTime()) {
-		c.Fs.Remove(id)
+		c.remove(id)
 		return true, nil
 	}

 	return false, nil
 }

+func (c *Cache) remove(id string) {
+	if c.cfg.entryIsDir {
+		c.Fs.RemoveAll(id)
+	} else {
+		c.Fs.Remove(id)
+	}
+}
+
 func (c *Cache) isExpired(modTime time.Time) bool {
-	if c.maxAge < 0 {
+	if c.cfg.MaxAge < 0 {
 		return false
 	}

 	// Note the use of time.Since here.
 	// We cannot use Hugo's global Clock for this.
-	return c.maxAge == 0 || time.Since(modTime) > c.maxAge
+	return c.cfg.MaxAge == 0 || time.Since(modTime) > c.cfg.MaxAge
 }

 // For testing
 func (c *Cache) GetString(id string) string {
 	id = cleanID(id)

-	c.nlocker.Lock(id)
-	defer c.nlocker.Unlock(id)
+	c.entryLocker.Lock(id)
+	defer c.entryLocker.Unlock(id)

 	f, err := c.Fs.Open(id)
 	if err != nil {
@@ -417,6 +502,17 @@ func (c *Cache) GetString(id string) string {
 // Caches is a named set of caches.
 type Caches map[string]*Cache

+func (f Caches) SetResourceFs(fs afero.Fs) {
+	for _, c := range f {
+		if c.cfg.IsResourceDir {
+			if c.isInited {
+				panic("cannot set resource fs after init")
+			}
+			c.Fs = hugofs.NewBasePathFs(fs, c.cfg.DirCompiled)
+		}
+	}
+}
+
 // Get gets a named cache, nil if none found.
 func (f Caches) Get(name string) *Cache {
 	return f[strings.ToLower(name)]
@@ -424,34 +520,21 @@ func (f Caches) Get(name string) *Cache {

 // NewCaches creates a new set of file caches from the given
 // configuration.
-func NewCaches(p *helpers.PathSpec) (Caches, error) {
-	dcfg := p.Cfg.GetConfigSection("caches").(Configs)
-	fs := p.Fs.Source
+func NewCaches(dcfg Configs, sourceFs afero.Fs) (Caches, error) {
+	fs := sourceFs

 	m := make(Caches)
 	for k, v := range dcfg {
 		var cfs afero.Fs
-
 		if v.IsResourceDir {
-			cfs = p.BaseFs.ResourcesCache
+			cfs = nil // Set later. TODO(bep) this needs to be cleanded up.
 		} else {
-			cfs = fs
+			cfs = hugofs.NewBasePathFs(fs, v.DirCompiled)
 		}

-		if cfs == nil {
-			panic("nil fs")
-		}
+		c := NewCache(cfs, v)

-		baseDir := v.DirCompiled
-
-		bfs := hugofs.NewBasePathFs(cfs, baseDir)
-
-		var pruneAllRootDir string
-		if k == CacheKeyModules {
-			pruneAllRootDir = "pkg"
-		}
-
-		m[k] = NewCache(bfs, v.MaxAge, pruneAllRootDir)
+		m[k] = c
 	}

 	return m, nil
@@ -480,7 +563,7 @@ func (h *httpCache) Get(id string) (resp []byte, ok bool) {
 }

 func (h *httpCache) Set(id string, resp []byte) {
-	if h.c.maxAge == 0 {
+	if h.c.cfg.MaxAge == 0 {
 		return
 	}

@@ -15,6 +15,7 @@
 package filecache

 import (
+	"encoding/json"
 	"errors"
 	"fmt"
 	"path"
@@ -22,7 +23,7 @@ import (
 	"strings"
 	"time"

-	"github.com/gohugoio/hugo/common/maps"
+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/gohugoio/hugo/config"

 	"github.com/mitchellh/mapstructure"
@@ -34,19 +35,14 @@ const (
 	cacheDirProject = ":cacheDir/:project"
 )

-var defaultCacheConfig = FileCacheConfig{
-	MaxAge: -1, // Never expire
-	Dir:    cacheDirProject,
-}
-
 const (
-	CacheKeyGetJSON     = "getjson"
-	CacheKeyGetCSV      = "getcsv"
-	CacheKeyImages      = "images"
-	CacheKeyAssets      = "assets"
-	CacheKeyModules     = "modules"
-	CacheKeyGetResource = "getresource"
-	CacheKeyMisc        = "misc"
+	CacheKeyImages        = "images"
+	CacheKeyAssets        = "assets"
+	CacheKeyModules       = "modules"
+	CacheKeyModuleQueries = "modulequeries"
+	CacheKeyModuleGitInfo = "modulegitinfo"
+	CacheKeyGetResource   = "getresource"
+	CacheKeyMisc          = "misc"
 )

 type Configs map[string]FileCacheConfig
@@ -67,9 +63,22 @@ var defaultCacheConfigs = Configs{
 	CacheKeyModules: {
 		MaxAge: -1,
 		Dir:    ":cacheDir/modules",
+		fileCacheConfigInternal: fileCacheConfigInternal{
+			entryIsDir: true,
+			isReadOnly: true, // we need to make it writable when pruning.
+		},
+	},
+	CacheKeyModuleQueries: {
+		MaxAge: 24 * time.Hour,
+		Dir:    ":cacheDir/modules",
+	},
+	CacheKeyModuleGitInfo: {
+		MaxAge: 24 * time.Hour,
+		Dir:    ":cacheDir/modules",
+		fileCacheConfigInternal: fileCacheConfigInternal{
+			entryIsDir: true,
+		},
 	},
-	CacheKeyGetJSON: defaultCacheConfig,
-	CacheKeyGetCSV:  defaultCacheConfig,
 	CacheKeyImages: {
 		MaxAge: -1,
 		Dir:    resourcesGenDir,
@@ -88,6 +97,13 @@ var defaultCacheConfigs = Configs{
 	},
 }

+func init() {
+	for k, v := range defaultCacheConfigs {
+		v.name = k
+		defaultCacheConfigs[k] = v
+	}
+}
+
 type FileCacheConfig struct {
 	// Max age of cache entries in this cache. Any items older than this will
 	// be removed and not returned from the cache.
@@ -99,22 +115,50 @@ type FileCacheConfig struct {
 	MaxAge time.Duration

 	// The directory where files are stored.
-	Dir         string
-	DirCompiled string `json:"-"`
+	Dir string

-	// Will resources/_gen will get its own composite filesystem that
-	// also checks any theme.
-	IsResourceDir bool `json:"-"`
+	fileCacheConfigInternal `json:"-"`
 }

-// GetJSONCache gets the file cache for getJSON.
-func (f Caches) GetJSONCache() *Cache {
-	return f[CacheKeyGetJSON]
+func (cfg *FileCacheConfig) init() error {
+	if cfg.DirCompiled == "" {
+		// From unit tests. Just check that it does not contain any placeholders.
+		if strings.Contains(cfg.Dir, ":") {
+			return fmt.Errorf("cache dir %q contains unresolved placeholders", cfg.Dir)
+		}
+		cfg.DirCompiled = cfg.Dir
+	}
+	// Sanity check the config.
+	if len(cfg.DirCompiled) < 5 {
+		panic(fmt.Sprintf("invalid cache dir: %q", cfg.DirCompiled))
+	}
+	return nil
 }

-// GetCSVCache gets the file cache for getCSV.
-func (f Caches) GetCSVCache() *Cache {
-	return f[CacheKeyGetCSV]
+type fileCacheConfigInternal struct {
+	DirCompiled string
+
+	name          string // The name of this cache, e.g. "images", "modules" etc.
+	entryIsDir    bool   // when set, the cache entries represents directories directly below the base dir.
+	isReadOnly    bool   // when set, the cache is read only and needs to be pruned differently. This is used for the Go modules cache.
+	IsResourceDir bool   //  resources/_gen will get its own composite filesystem that also checks any theme. TODO(bep) unexport this.
+}
+
+// MarshalJSON marshals FileCacheConfig to JSON with MaxAge as a human-readable string.
+func (c FileCacheConfig) MarshalJSON() ([]byte, error) {
+	var maxAge any
+	if c.MaxAge == -1 {
+		maxAge = -1
+	} else {
+		maxAge = strings.TrimSuffix(c.MaxAge.String(), "0m0s")
+	}
+	return json.Marshal(&struct {
+		MaxAge any    `json:"maxAge"`
+		Dir    string `json:"dir"`
+	}{
+		MaxAge: maxAge,
+		Dir:    c.Dir,
+	})
 }

 // ImageCache gets the file cache for processed images.
@@ -127,6 +171,25 @@ func (f Caches) ModulesCache() *Cache {
 	return f[CacheKeyModules]
 }

+// ModuleQueriesCache gets the file cache for Hugo Module version queries.
+// Returns nil if not found.
+func (f Caches) ModuleQueriesCache() *Cache {
+	c, ok := f[CacheKeyModuleQueries]
+	if !ok {
+		panic("module queries cache not set")
+	}
+	return c
+}
+
+// ModuleGitInfoCache gets the file cache for Hugo Module git info.
+func (f Caches) ModuleGitInfoCache() *Cache {
+	c, ok := f[CacheKeyModuleGitInfo]
+	if !ok {
+		panic("module git info cache not set")
+	}
+	return c
+}
+
 // AssetsCache gets the file cache for assets (processed resources, SCSS etc.).
 func (f Caches) AssetsCache() *Cache {
 	return f[CacheKeyAssets]
@@ -154,10 +217,14 @@ func DecodeConfig(fs afero.Fs, bcfg config.BaseConfig, m map[string]any) (Config
 	_, isOsFs := fs.(*afero.OsFs)

 	for k, v := range m {
-		if _, ok := v.(maps.Params); !ok {
+		if _, ok := v.(hmaps.Params); !ok {
 			continue
 		}
-		cc := defaultCacheConfig
+		var ok bool
+		cc, ok := c[k]
+		if !ok {
+			return nil, fmt.Errorf("%q is not a valid cache name", k)
+		}

 		dc := &mapstructure.DecoderConfig{
 			Result:           &cc,
@@ -178,12 +245,8 @@ func DecodeConfig(fs afero.Fs, bcfg config.BaseConfig, m map[string]any) (Config
 			return c, errors.New("must provide cache Dir")
 		}

-		name := strings.ToLower(k)
-		if !valid[name] {
-			return nil, fmt.Errorf("%q is not a valid cache name", name)
-		}
+		c[k] = cc

-		c[name] = cc
 	}

 	for k, v := range c {
@@ -14,6 +14,7 @@
 package filecache_test

 import (
+	"encoding/json"
 	"path/filepath"
 	"runtime"
 	"testing"
@@ -43,12 +44,9 @@ assetDir = "assets"
 archetypeDir = "archetypes"

 [caches]
-[caches.getJSON]
+[caches.misc]
 maxAge = "10m"
 dir = "/path/to/c1"
-[caches.getCSV]
-maxAge = "11h"
-dir = "/path/to/c2"
 [caches.images]
 dir = "/path/to/c3"
 [caches.getResource]
@@ -61,9 +59,9 @@ dir = "/path/to/c4"
 	decoded := testconfig.GetTestConfigs(fs, cfg).Base.Caches
 	c.Assert(len(decoded), qt.Equals, 7)

-	c2 := decoded["getcsv"]
-	c.Assert(c2.MaxAge.String(), qt.Equals, "11h0m0s")
-	c.Assert(c2.DirCompiled, qt.Equals, filepath.FromSlash("/path/to/c2/filecache/getcsv"))
+	c2 := decoded["misc"]
+	c.Assert(c2.MaxAge.String(), qt.Equals, "10m0s")
+	c.Assert(c2.DirCompiled, qt.Equals, filepath.FromSlash("/path/to/c1/filecache/misc"))

 	c3 := decoded["images"]
 	c.Assert(c3.MaxAge, qt.Equals, time.Duration(-1))
@@ -90,12 +88,9 @@ archeTypedir = "archetypes"

 ignoreCache = true
 [caches]
-[caches.getJSON]
+[caches.misc]
 maxAge = 1234
 dir = "/path/to/c1"
-[caches.getCSV]
-maxAge = 3456
-dir = "/path/to/c2"
 [caches.images]
 dir = "/path/to/c3"
 [caches.getResource]
@@ -132,15 +127,45 @@ func TestDecodeConfigDefault(t *testing.T) {
 	c.Assert(len(decoded), qt.Equals, 7)

 	imgConfig := decoded[filecache.CacheKeyImages]
-	jsonConfig := decoded[filecache.CacheKeyGetJSON]
+	miscConfig := decoded[filecache.CacheKeyMisc]

 	if runtime.GOOS == "windows" {
 		c.Assert(imgConfig.DirCompiled, qt.Equals, filepath.FromSlash("_gen/images"))
 	} else {
 		c.Assert(imgConfig.DirCompiled, qt.Equals, "_gen/images")
-		c.Assert(jsonConfig.DirCompiled, qt.Equals, "/cache/thecache/hugoproject/filecache/getjson")
+		c.Assert(miscConfig.DirCompiled, qt.Equals, "/cache/thecache/hugoproject/filecache/misc")
 	}

 	c.Assert(imgConfig.IsResourceDir, qt.Equals, true)
-	c.Assert(jsonConfig.IsResourceDir, qt.Equals, false)
+	c.Assert(miscConfig.IsResourceDir, qt.Equals, false)
+}
+
+func TestFileCacheConfigMarshalJSON(t *testing.T) {
+	c := qt.New(t)
+
+	cfg := config.New()
+	cfg.Set("cacheDir", "/cache")
+	cfg.Set("workingDir", "/my/project")
+
+	fs := afero.NewMemMapFs()
+	decoded := testconfig.GetTestConfigs(fs, cfg).Base.Caches
+
+	moduleQueriesConfig := decoded[filecache.CacheKeyModuleQueries]
+	c.Assert(moduleQueriesConfig.MaxAge, qt.Equals, 24*time.Hour)
+
+	// Also verify the new moduleGitInfo cache.
+	moduleGitInfoConfig := decoded[filecache.CacheKeyModuleGitInfo]
+	c.Assert(moduleGitInfoConfig.MaxAge, qt.Equals, 24*time.Hour)
+
+	b, err := json.Marshal(moduleQueriesConfig)
+	c.Assert(err, qt.IsNil)
+
+	c.Assert(string(b), qt.Contains, `"maxAge":"24h"`)
+	c.Assert(string(b), qt.Not(qt.Contains), "86400000000000")
+	c.Assert(string(b), qt.Not(qt.Contains), "8.64e")
+
+	moduleQueriesConfig.MaxAge = -1
+	b, err = json.Marshal(moduleQueriesConfig)
+	c.Assert(err, qt.IsNil)
+	c.Assert(string(b), qt.Contains, `"maxAge":-1`)
 }
@@ -50,8 +50,8 @@ func (c Caches) Prune() (int, error) {
 // Prune removes expired and unused items from this cache.
 // If force is set, everything will be removed not considering expiry time.
 func (c *Cache) Prune(force bool) (int, error) {
-	if c.pruneAllRootDir != "" {
-		return c.pruneRootDir(force)
+	if c.cfg.entryIsDir {
+		return c.pruneRootDirs(force)
 	}
 	if err := c.init(); err != nil {
 		return 0, err
@@ -93,9 +93,9 @@ func (c *Cache) Prune(force bool) (int, error) {

 		shouldRemove := force || c.isExpired(info.ModTime())

-		if !shouldRemove && len(c.nlocker.seen) > 0 {
+		if !shouldRemove && len(c.entryLocker.seen) > 0 {
 			// Remove it if it's not been touched/used in the last build.
-			_, seen := c.nlocker.seen[name]
+			_, seen := c.entryLocker.seen[name]
 			shouldRemove = !seen
 		}

@@ -117,11 +117,43 @@ func (c *Cache) Prune(force bool) (int, error) {
 	return counter, err
 }

-func (c *Cache) pruneRootDir(force bool) (int, error) {
+func (c *Cache) pruneRootDirs(force bool) (int, error) {
+	dirs, err := afero.ReadDir(c.Fs, "")
+	if err != nil {
+		if herrors.IsNotExist(err) {
+			return 0, nil
+		}
+		return 0, err
+	}
+
+	counter := 0
+
+	for _, dir := range dirs {
+		if !dir.IsDir() {
+			continue
+		}
+
+		count, err := c.pruneRootDir(dir.Name(), force)
+		if err != nil {
+			return counter, err
+		}
+		counter += count
+	}
+
+	return counter, nil
+}
+
+func (c *Cache) pruneRootDir(dirname string, force bool) (int, error) {
 	if err := c.init(); err != nil {
 		return 0, err
 	}
-	info, err := c.Fs.Stat(c.pruneAllRootDir)
+
+	// Sanity check.
+	if dirname != "pkg" && len(dirname) < 5 {
+		panic(fmt.Sprintf("invalid cache dir name: %q", dirname))
+	}
+
+	info, err := c.Fs.Stat(dirname)
 	if err != nil {
 		if herrors.IsNotExist(err) {
 			return 0, nil
@@ -133,5 +165,9 @@ func (c *Cache) pruneRootDir(force bool) (int, error) {
 		return 0, nil
 	}

-	return hugofs.MakeReadableAndRemoveAllModulePkgDir(c.Fs, c.pruneAllRootDir)
+	if c.cfg.isReadOnly {
+		return hugofs.MakeReadableAndRemoveAllModulePkgDir(c.Fs, dirname)
+	}
+
+	return 1, c.Fs.RemoveAll(dirname)
 }
@@ -39,12 +39,9 @@ assetDir = "assets"
 archeTypedir = "archetypes"

 [caches]
-[caches.getjson]
+[caches.misc]
 maxAge = "200ms"
 dir = "/cache/c"
-[caches.getcsv]
-maxAge = "200ms"
-dir = "/cache/d"
 [caches.assets]
 maxAge = "200ms"
 dir = ":resourceDir/_gen"
@@ -53,11 +50,14 @@ maxAge = "200ms"
 dir = ":resourceDir/_gen"
 `

-	for _, name := range []string{filecache.CacheKeyGetCSV, filecache.CacheKeyGetJSON, filecache.CacheKeyAssets, filecache.CacheKeyImages} {
+	for _, name := range []string{filecache.CacheKeyAssets, filecache.CacheKeyImages} {
 		msg := qt.Commentf("cache: %s", name)
-		p := newPathsSpec(t, afero.NewMemMapFs(), configStr)
-		caches, err := filecache.NewCaches(p)
+		fs := afero.NewMemMapFs()
+		p := newPathsSpec(t, fs, configStr)
+		fileCachConfig := p.Cfg.GetConfigSection("caches").(filecache.Configs)
+		caches, err := filecache.NewCaches(fileCachConfig, fs)
 		c.Assert(err, qt.IsNil)
+		caches.SetResourceFs(fs)
 		cache := caches[name]
 		for i := range 10 {
 			id := fmt.Sprintf("i%d", i)
@@ -84,8 +84,9 @@ dir = ":resourceDir/_gen"
 			}
 		}

-		caches, err = filecache.NewCaches(p)
+		caches, err = filecache.NewCaches(fileCachConfig, fs)
 		c.Assert(err, qt.IsNil)
+		caches.SetResourceFs(fs)
 		cache = caches[name]
 		// Touch one and then prune.
 		cache.GetOrCreateBytes("i5", func() ([]byte, error) {
@@ -22,6 +22,8 @@ import (
 	"testing"
 	"time"

+	"github.com/gohugoio/hugo/htesting"
+
 	"github.com/gohugoio/hugo/cache/filecache"
 	"github.com/gohugoio/hugo/common/hugio"
 	"github.com/gohugoio/hugo/config"
@@ -64,7 +66,7 @@ assetDir = "assets"
 archeTypedir = "archetypes"

 [caches]
-[caches.getJSON]
+[caches.misc]
 maxAge = "10h"
 dir = ":cacheDir/c"

@@ -78,11 +80,13 @@ dir = ":cacheDir/c"
 		configStr = strings.Replace(configStr, "\\", winPathSep, -1)

 		p := newPathsSpec(t, osfs, configStr)
+		fileCachConfig := p.Cfg.GetConfigSection("caches").(filecache.Configs)

-		caches, err := filecache.NewCaches(p)
+		caches, err := filecache.NewCaches(fileCachConfig, p.Fs.Source)
 		c.Assert(err, qt.IsNil)
+		caches.SetResourceFs(p.SourceFs)

-		cache := caches.Get("GetJSON")
+		cache := caches.Get("Misc")
 		c.Assert(cache, qt.Not(qt.IsNil))

 		cache = caches.Get("Images")
@@ -104,7 +108,7 @@ dir = ":cacheDir/c"
 			return []byte("bcd"), nil
 		}

-		for _, ca := range []*filecache.Cache{caches.ImageCache(), caches.AssetsCache(), caches.GetJSONCache(), caches.GetCSVCache()} {
+		for _, ca := range []*filecache.Cache{caches.ImageCache(), caches.AssetsCache()} {
 			for range 2 {
 				info, r, err := ca.GetOrCreate("a", rf("abc"))
 				c.Assert(err, qt.IsNil)
@@ -132,8 +136,6 @@ dir = ":cacheDir/c"
 			}
 		}

-		c.Assert(caches.Get("getJSON"), qt.Not(qt.IsNil))
-
 		info, w, err := caches.ImageCache().WriteCloser("mykey")
 		c.Assert(err, qt.IsNil)
 		c.Assert(info.Name, qt.Equals, "mykey")
@@ -149,7 +151,7 @@ dir = ":cacheDir/c"
 		r.Close()
 		c.Assert(string(b), qt.Equals, "Hugo is great!")

-		info, b, err = caches.ImageCache().GetBytes("mykey")
+		info, b, err = caches.ImageCache().GetItemBytes("mykey")
 		c.Assert(err, qt.IsNil)
 		c.Assert(info.Name, qt.Equals, "mykey")
 		c.Assert(string(b), qt.Equals, "Hugo is great!")
@@ -158,6 +160,7 @@ dir = ":cacheDir/c"
 }

 func TestFileCacheConcurrent(t *testing.T) {
+	htesting.SkipSlowTestUnlessCI(t)
 	t.Parallel()

 	c := qt.New(t)
@@ -172,18 +175,19 @@ assetDir = "assets"
 archeTypedir = "archetypes"

 [caches]
-[caches.getjson]
+[caches.misc]
 maxAge = "1s"
 dir = "/cache/c"

 `

 	p := newPathsSpec(t, afero.NewMemMapFs(), configStr)
-
-	caches, err := filecache.NewCaches(p)
+	fileCachConfig := p.Cfg.GetConfigSection("caches").(filecache.Configs)
+	caches, err := filecache.NewCaches(fileCachConfig, p.Fs.Source)
 	c.Assert(err, qt.IsNil)
+	caches.SetResourceFs(p.Fs.Source)

-	const cacheName = "getjson"
+	const cacheName = "misc"

 	filenameData := func(i int) (string, string) {
 		data := fmt.Sprintf("data: %d", i)
@@ -248,7 +252,12 @@ func TestFileCacheReadOrCreateErrorInRead(t *testing.T) {
 		}
 	}

-	cache := filecache.NewCache(afero.NewMemMapFs(), 100*time.Hour, "")
+	cfg := filecache.FileCacheConfig{
+		MaxAge: 100 * time.Hour,
+		Dir:    "cache/c",
+	}
+
+	cache := filecache.NewCache(afero.NewMemMapFs(), cfg)

 	const id = "a32"

@@ -0,0 +1,82 @@
+#!/bin/bash
+
+set -e
+
+# Default to all packages if none specified
+PACKAGES="${1:-./...}"
+
+echo "==> Checking packages: $PACKAGES"
+
+# Timing arrays
+declare -a STEP_NAMES
+declare -a STEP_TIMES
+
+time_step() {
+    local name="$1"
+    shift
+    local start=$(date +%s.%N)
+    "$@"
+    local end=$(date +%s.%N)
+    local elapsed=$(echo "$end - $start" | bc)
+    STEP_NAMES+=("$name")
+    STEP_TIMES+=("$elapsed")
+}
+
+# Check gofmt
+run_gofmt() {
+    echo "==> Running gofmt..."
+    # Convert package pattern to path (e.g., ./hugolib/... -> ./hugolib)
+    local path="${PACKAGES%/...}"
+    GOFMT_OUTPUT=$(gofmt -l "$path" 2>&1) || true
+    if [ -n "$GOFMT_OUTPUT" ]; then
+        echo "gofmt found issues in:"
+        echo "$GOFMT_OUTPUT"
+        exit 1
+    fi
+    echo "    OK"
+}
+
+# Run staticcheck
+run_staticcheck() {
+    # Check if staticcheck is installed, install if not
+    if ! command -v staticcheck &> /dev/null; then
+        echo "==> Installing staticcheck..."
+        go install honnef.co/go/tools/cmd/staticcheck@latest
+    fi
+    echo "==> Running staticcheck..."
+    staticcheck $PACKAGES
+    echo "    OK"
+}
+
+# Run tests
+run_tests() {
+    echo "==> Running tests..."
+    local output
+    if ! output=$(go test -failfast $PACKAGES 2>&1); then
+        echo "$output"
+        exit 1
+    fi
+    echo "    OK"
+}
+
+# Run all steps with timing
+TOTAL_START=$(date +%s.%N)
+
+time_step "gofmt" run_gofmt
+time_step "staticcheck" run_staticcheck
+time_step "tests" run_tests
+
+TOTAL_END=$(date +%s.%N)
+TOTAL_ELAPSED=$(echo "$TOTAL_END - $TOTAL_START" | bc)
+
+# Print timing summary
+echo ""
+echo "==> All checks passed!"
+echo ""
+echo "Timing summary:"
+echo "---------------"
+for i in "${!STEP_NAMES[@]}"; do
+    printf "  %-15s %6.2fs\n" "${STEP_NAMES[$i]}" "${STEP_TIMES[$i]}"
+done
+echo "---------------"
+printf "  %-15s %6.2fs\n" "Total" "$TOTAL_ELAPSED"
@@ -73,7 +73,7 @@ func (c *Inspector) MethodsFromTypes(include []reflect.Type, exclude []reflect.T
 	nameAndPackage := func(t reflect.Type) (string, string) {
 		var name, pkg string

-		isPointer := t.Kind() == reflect.Ptr
+		isPointer := t.Kind() == reflect.Pointer

 		if isPointer {
 			t = t.Elem()
@@ -26,9 +26,9 @@ import (

 func TestMethods(t *testing.T) {
 	var (
-		zeroIE     = reflect.TypeOf((*IEmbed)(nil)).Elem()
-		zeroIEOnly = reflect.TypeOf((*IEOnly)(nil)).Elem()
-		zeroI      = reflect.TypeOf((*I)(nil)).Elem()
+		zeroIE     = reflect.TypeFor[IEmbed]()
+		zeroIEOnly = reflect.TypeFor[IEOnly]()
+		zeroI      = reflect.TypeFor[I]()
 	)

 	dir, _ := os.Getwd()
@@ -97,6 +97,7 @@ type commonConfig struct {
 type configKey struct {
 	counter                    int32
 	ignoreModulesDoesNotExists bool
+	skipNpmCheck               bool
 }

 // This is the root command.
@@ -131,6 +132,7 @@ type rootCommand struct {
 	gc              bool
 	poll            string
 	forceSyncStatic bool
+	panicOnWarning  bool

 	// Profile flags (for debugging of performance problems)
 	cpuprofile   string
@@ -194,6 +196,7 @@ func (r *rootCommand) ConfigFromConfig(key configKey, oldConf *commonConfig) (*c
 				Logger:                   r.logger,
 				Environment:              r.environment,
 				IgnoreModuleDoesNotExist: key.ignoreModulesDoesNotExists,
+				SkipNpmCheck:             key.skipNpmCheck,
 			},
 		)
 		if err != nil {
@@ -250,6 +253,7 @@ func (r *rootCommand) ConfigFromProvider(key configKey, cfg config.Provider) (*c
 				Environment:              r.environment,
 				Logger:                   r.logger,
 				IgnoreModuleDoesNotExist: key.ignoreModulesDoesNotExists,
+				SkipNpmCheck:             key.skipNpmCheck,
 			},
 		)
 		if err != nil {
@@ -331,6 +335,9 @@ func (r *rootCommand) ConfigFromProvider(key configKey, cfg config.Provider) (*c
 }

 func (r *rootCommand) HugFromConfig(conf *commonConfig) (*hugolib.HugoSites, error) {
+	if conf == nil {
+		return nil, fmt.Errorf("conf must be set")
+	}
 	k := configKey{counter: r.configVersionID.Load()}
 	h, _, err := r.hugoSites.GetOrCreate(k, func(key configKey) (*hugolib.HugoSites, error) {
 		depsCfg := r.newDepsConfig(conf)
@@ -485,12 +492,18 @@ func (r *rootCommand) createLogger(running bool) (loggers.Logger, error) {
 		}
 	}

+	var logHookLast func(e *logg.Entry) error
+	if r.panicOnWarning {
+		logHookLast = loggers.PanicOnWarningHook
+	}
+
 	optsLogger := loggers.Options{
 		DistinctLevel: logg.LevelWarn,
 		Level:         level,
 		StdOut:        r.StdOut,
 		StdErr:        r.StdErr,
 		StoreErrors:   running,
+		HandlerPost:   logHookLast,
 	}

 	return loggers.New(optsLogger), nil
@@ -517,8 +530,8 @@ func (r *rootCommand) initRootCommand(subCommandName string, cd *simplecobra.Com
 		commandName = subCommandName
 	}
 	cmd.Use = fmt.Sprintf("%s [flags]", commandName)
-	cmd.Short = "Build your site"
-	cmd.Long = `COMMAND_NAME is the main command, used to build your Hugo site.
+	cmd.Short = "Build your project"
+	cmd.Long = `COMMAND_NAME is the main command, used to build your Hugo project.

 Hugo is a Fast and Flexible Static Site Generator
 built with love by spf13 and friends in Go.
@@ -588,7 +601,7 @@ func applyLocalFlagsBuild(cmd *cobra.Command, r *rootCommand) {
 	cmd.Flags().BoolVar(&r.gc, "gc", false, "enable to run some cleanup tasks (remove unused cache files) after the build")
 	cmd.Flags().StringVar(&r.poll, "poll", "", "set this to a poll interval, e.g --poll 700ms, to use a poll based approach to watch for file system changes")
 	_ = cmd.RegisterFlagCompletionFunc("poll", cobra.NoFileCompletions)
-	cmd.Flags().Bool("panicOnWarning", false, "panic on first WARNING log")
+	cmd.Flags().BoolVar(&r.panicOnWarning, "panicOnWarning", false, "panic on first WARNING log")
 	cmd.Flags().Bool("templateMetrics", false, "display metrics about template executions")
 	cmd.Flags().Bool("templateMetricsHints", false, "calculate some improvement hints when combined with --templateMetrics")
 	cmd.Flags().BoolVar(&r.forceSyncStatic, "forceSyncStatic", false, "copy all files when static is changed.")
@@ -619,13 +632,14 @@ func (r *rootCommand) timeTrack(start time.Time, name string) {
 }

 type simpleCommand struct {
-	use   string
-	name  string
-	short string
-	long  string
-	run   func(ctx context.Context, cd *simplecobra.Commandeer, rootCmd *rootCommand, args []string) error
-	withc func(cmd *cobra.Command, r *rootCommand)
-	initc func(cd *simplecobra.Commandeer) error
+	use     string
+	name    string
+	short   string
+	long    string
+	aliases []string
+	run     func(ctx context.Context, cd *simplecobra.Commandeer, rootCmd *rootCommand, args []string) error
+	withc   func(cmd *cobra.Command, r *rootCommand)
+	initc   func(cd *simplecobra.Commandeer) error

 	commands []simplecobra.Commander

@@ -652,6 +666,7 @@ func (c *simpleCommand) Init(cd *simplecobra.Commandeer) error {
 	cmd := cd.CobraCommand
 	cmd.Short = c.short
 	cmd.Long = c.long
+	cmd.Aliases = c.aliases
 	if c.use != "" {
 		cmd.Use = c.use
 	}
@@ -669,7 +684,7 @@ func (c *simpleCommand) PreRun(cd, runner *simplecobra.Commandeer) error {
 }

 func mapLegacyArgs(args []string) []string {
-	if len(args) > 1 && args[0] == "new" && !hstrings.EqualAny(args[1], "site", "theme", "content") {
+	if len(args) > 1 && args[0] == "new" && !hstrings.EqualAny(args[1], "project", "site", "theme", "content") {
 		// Insert "content" as the second argument
 		args = append(args[:1], append([]string{"content"}, args[1:]...)...)
 	}
@@ -23,7 +23,7 @@ import (
 	"time"

 	"github.com/bep/simplecobra"
-	"github.com/gohugoio/hugo/common/maps"
+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/gohugoio/hugo/config/allconfig"
 	"github.com/gohugoio/hugo/hugolib/sitesmatrix"
 	"github.com/gohugoio/hugo/modules"
@@ -95,7 +95,7 @@ func (c *configCommand) Run(ctx context.Context, cd *simplecobra.Commandeer, arg
 		if err := json.Unmarshal(buf.Bytes(), &m); err != nil {
 			return err
 		}
-		maps.ConvertFloat64WithNoDecimalsToInt(m)
+		hmaps.ConvertFloat64WithNoDecimalsToInt(m)
 		switch format {
 		case "yaml":
 			return parser.InterfaceToConfig(m, metadecoders.YAML, os.Stdout)
@@ -112,8 +112,8 @@ func (c *configCommand) Run(ctx context.Context, cd *simplecobra.Commandeer, arg
 func (c *configCommand) Init(cd *simplecobra.Commandeer) error {
 	c.r = cd.Root.Command.(*rootCommand)
 	cmd := cd.CobraCommand
-	cmd.Short = "Display site configuration"
-	cmd.Long = `Display site configuration, both default and custom settings.`
+	cmd.Short = "Display project configuration"
+	cmd.Long = `Display project configuration, both default and custom settings.`
 	cmd.Flags().StringVar(&c.format, "format", "toml", "preferred file format (toml, yaml or json)")
 	_ = cmd.RegisterFlagCompletionFunc("format", cobra.FixedCompletions([]string{"toml", "yaml", "json"}, cobra.ShellCompDirectiveNoFileComp))
 	cmd.Flags().StringVar(&c.lang, "lang", "", "the language to display config for. Defaults to the first language defined.")
@@ -18,10 +18,12 @@ import (
 	"context"
 	"fmt"
 	"path/filepath"
+	"slices"
 	"strings"
 	"time"

 	"github.com/bep/simplecobra"
+	"github.com/gohugoio/hugo/common/hugio"
 	"github.com/gohugoio/hugo/config"
 	"github.com/gohugoio/hugo/helpers"
 	"github.com/gohugoio/hugo/hugofs"
@@ -200,6 +202,56 @@ func (c *convertCommand) convertAndSavePage(p page.Page, site *hugolib.Site, tar
 	return nil
 }

+func (c *convertCommand) copyContentDirsForOutput(pagesBackedByFile page.Pages) error {
+	contentDirs := make(map[string]bool)
+	for _, p := range pagesBackedByFile {
+		filename := p.File().Filename()
+		contentDir := strings.TrimSuffix(filename, p.File().Path())
+		if contentDir == filename {
+			continue
+		}
+		contentDirs[filepath.Clean(contentDir)] = true
+	}
+
+	var contentDirList []string
+	for contentDir := range contentDirs {
+		contentDirList = append(contentDirList, contentDir)
+	}
+	slices.Sort(contentDirList)
+
+	outputDirAbs, err := filepath.Abs(c.outputDir)
+	if err != nil {
+		return fmt.Errorf("failed to resolve output path %q: %w", c.outputDir, err)
+	}
+
+	for _, contentDir := range contentDirList {
+		outputContentDirAbs := filepath.Join(outputDirAbs, filepath.Base(contentDir))
+
+		skipDirs := make(map[string]bool)
+		relToOutputDir, err := filepath.Rel(contentDir, outputDirAbs)
+		if err == nil && relToOutputDir != ".." && !strings.HasPrefix(relToOutputDir, ".."+string(filepath.Separator)) {
+			skipDirs[filepath.Clean(outputDirAbs)] = true
+		}
+		relToOutputContentDir, err := filepath.Rel(contentDir, outputContentDirAbs)
+		if err == nil && relToOutputContentDir != ".." && !strings.HasPrefix(relToOutputContentDir, ".."+string(filepath.Separator)) {
+			skipDirs[filepath.Clean(outputContentDirAbs)] = true
+		}
+
+		var shouldCopy func(filename string) bool
+		if len(skipDirs) > 0 {
+			shouldCopy = func(filename string) bool {
+				return !skipDirs[filepath.Clean(filename)]
+			}
+		}
+
+		if err := hugio.CopyDir(hugofs.Os, contentDir, outputContentDirAbs, shouldCopy); err != nil {
+			return fmt.Errorf("failed to copy %q to %q: %w", contentDir, outputContentDirAbs, err)
+		}
+	}
+
+	return nil
+}
+
 func (c *convertCommand) convertContents(format metadecoders.Format) error {
 	if c.outputDir == "" && !c.unsafe {
 		return newUserError("Unsafe operation not allowed, use --unsafe or set a different output path")
@@ -219,6 +271,12 @@ func (c *convertCommand) convertContents(format metadecoders.Format) error {
 		pagesBackedByFile = append(pagesBackedByFile, p)
 	}

+	if c.outputDir != "" {
+		if err := c.copyContentDirsForOutput(pagesBackedByFile); err != nil {
+			return err
+		}
+	}
+
 	site.Log.Println("processing", len(pagesBackedByFile), "content files")
 	for _, p := range site.AllPages() {
 		if err := c.convertAndSavePage(p, site, format); err != nil {
@@ -27,8 +27,8 @@ import (
 func newDeployCommand() simplecobra.Commander {
 	return &simpleCommand{
 		name:  "deploy",
-		short: "Deploy your site to a cloud provider",
-		long: `Deploy your site to a cloud provider
+		short: "Deploy your project to a cloud provider",
+		long: `Deploy your project to a cloud provider

 See https://gohugo.io/hosting-and-deployment/hugo-deploy/ for detailed
 documentation.
@@ -60,7 +60,7 @@ func newGenCommand() *genCommand {
 			short: "Generate CSS stylesheet for the Chroma code highlighter",
 			long: `Generate CSS stylesheet for the Chroma code highlighter for a given style. This stylesheet is needed if markup.highlight.noClasses is disabled in config.

-See https://xyproto.github.io/splash/docs/all.html for a preview of the available styles`,
+See https://gohugo.io/quick-reference/syntax-highlighting-styles/ for a preview of the available styles.`,

 			run: func(ctx context.Context, cd *simplecobra.Commandeer, r *rootCommand, args []string) error {
 				style = strings.ToLower(style)
@@ -98,7 +98,7 @@ See https://xyproto.github.io/splash/docs/all.html for a preview of the availabl
 			},
 			withc: func(cmd *cobra.Command, r *rootCommand) {
 				cmd.ValidArgsFunction = cobra.NoFileCompletions
-				cmd.PersistentFlags().StringVar(&style, "style", "friendly", "highlighter style (see https://xyproto.github.io/splash/docs/)")
+				cmd.PersistentFlags().StringVar(&style, "style", "friendly", "highlighter style")
 				_ = cmd.RegisterFlagCompletionFunc("style", cobra.NoFileCompletions)
 				cmd.PersistentFlags().StringVar(&highlightStyle, "highlightStyle", "", `foreground and background colors for highlighted lines, e.g. --highlightStyle "#fff000 bg:#000fff"`)
 				_ = cmd.RegisterFlagCompletionFunc("highlightStyle", cobra.NoFileCompletions)
@@ -81,7 +81,7 @@ func flagsToCfgWithAdditionalConfigBase(cd *simplecobra.Commandeer, cfg config.P
 		"editor":      "newContentEditor",
 	}

-	// Flags that we for some reason don't want to expose in the site config.
+	// Flags that we for some reason don't want to expose in the project config.
 	internalKeySet := map[string]bool{
 		"quiet":          true,
 		"verbose":        true,
@@ -31,11 +31,11 @@ import (
 	"github.com/bep/simplecobra"
 	"github.com/fsnotify/fsnotify"
 	"github.com/gohugoio/hugo/common/herrors"
+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/gohugoio/hugo/common/hstrings"
 	"github.com/gohugoio/hugo/common/htime"
 	"github.com/gohugoio/hugo/common/hugo"
 	"github.com/gohugoio/hugo/common/loggers"
-	"github.com/gohugoio/hugo/common/maps"
 	"github.com/gohugoio/hugo/common/paths"
 	"github.com/gohugoio/hugo/common/terminal"
 	"github.com/gohugoio/hugo/common/types"
@@ -56,8 +56,9 @@ import (
 type hugoBuilder struct {
 	r *rootCommand

-	confmu sync.Mutex
-	conf   *commonConfig
+	confmu  sync.Mutex
+	confOld *commonConfig
+	conf    *commonConfig

 	// May be nil.
 	s *serverCommand
@@ -94,6 +95,27 @@ func (c *hugoBuilder) withConf(fn func(conf *commonConfig)) {
 	fn(c.conf)
 }

+func (c *hugoBuilder) withConfOrOldConf(fn func(conf *commonConfig)) {
+	c.confmu.Lock()
+	defer c.confmu.Unlock()
+	if c.conf != nil {
+		fn(c.conf)
+	} else if c.confOld != nil {
+		fn(c.confOld)
+	}
+}
+
+func (c *hugoBuilder) withConfOrOldConfE(fn func(conf *commonConfig) error) error {
+	c.confmu.Lock()
+	defer c.confmu.Unlock()
+	if c.conf != nil {
+		return fn(c.conf)
+	} else if c.confOld != nil {
+		return fn(c.confOld)
+	}
+	return errConfigNotSet
+}
+
 type hugoBuilderErrState struct {
 	mu       sync.Mutex
 	paused   bool
@@ -157,6 +179,7 @@ func (c *hugoBuilder) initCPUProfile() (func(), error) {
 		return nil, fmt.Errorf("failed to create CPU profile: %w", err)
 	}
 	if err := pprof.StartCPUProfile(f); err != nil {
+		f.Close()
 		return nil, fmt.Errorf("failed to start CPU profile: %w", err)
 	}
 	return func() {
@@ -1077,7 +1100,7 @@ func (c *hugoBuilder) loadConfig(cd *simplecobra.Commandeer, running bool) error
 	}
 	cfg.Set("environment", c.r.environment)

-	cfg.Set("internal", maps.Params{
+	cfg.Set("internal", hmaps.Params{
 		"running":        running,
 		"watch":          watch,
 		"verbose":        c.r.isVerbose(),
@@ -1091,10 +1114,11 @@ func (c *hugoBuilder) loadConfig(cd *simplecobra.Commandeer, running bool) error

 	if len(conf.configs.LoadingInfo.ConfigFiles) == 0 {
 		//lint:ignore ST1005 end user message.
-		return errors.New("Unable to locate config file or config directory. Perhaps you need to create a new site.\nRun `hugo help new` for details.")
+		return errors.New("Unable to locate config file or config directory. Perhaps you need to create a new project.\nRun `hugo help new` for details.")
 	}

 	c.conf = conf
+	c.confOld = conf
 	if c.onConfigLoaded != nil {
 		if err := c.onConfigLoaded(false); err != nil {
 			return err
@@ -1158,8 +1182,9 @@ func (c *hugoBuilder) reloadConfig() error {
 	c.r.resetLogs()
 	c.r.configVersionID.Add(1)

-	if err := c.withConfE(func(conf *commonConfig) error {
+	if err := c.withConfOrOldConfE(func(conf *commonConfig) error {
 		oldConf := conf
+		c.conf = nil
 		newConf, err := c.r.ConfigFromConfig(configKey{counter: c.r.configVersionID.Load()}, conf)
 		if err != nil {
 			return err
@@ -29,9 +29,9 @@ import (
 	"unicode"

 	"github.com/bep/simplecobra"
+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/gohugoio/hugo/common/htime"
 	"github.com/gohugoio/hugo/common/hugio"
-	"github.com/gohugoio/hugo/common/maps"
 	"github.com/gohugoio/hugo/helpers"
 	"github.com/gohugoio/hugo/hugofs"
 	"github.com/gohugoio/hugo/parser"
@@ -49,7 +49,7 @@ func newImportCommand() *importCommand {
 				name:  "jekyll",
 				short: "hugo import from Jekyll",
 				long: `hugo import from Jekyll.
-		
+
 Import from Jekyll requires two paths, e.g. ` + "`hugo import jekyll jekyll_root_path target_path`.",
 				run: func(ctx context.Context, cd *simplecobra.Commandeer, r *rootCommand, args []string) error {
 					if len(args) < 2 {
@@ -90,8 +90,8 @@ func (c *importCommand) Run(ctx context.Context, cd *simplecobra.Commandeer, arg

 func (c *importCommand) Init(cd *simplecobra.Commandeer) error {
 	cmd := cd.CobraCommand
-	cmd.Short = "Import a site from another system"
-	cmd.Long = `Import a site from another system.
+	cmd.Short = "Import a project from another system"
+	cmd.Long = `Import a project from another system.

 Import requires a subcommand, e.g. ` + "`hugo import jekyll jekyll_root_path target_path`."

@@ -105,7 +105,7 @@ func (c *importCommand) PreRun(cd, runner *simplecobra.Commandeer) error {
 }

 func (i *importCommand) createConfigFromJekyll(fs afero.Fs, inpath string, kind metadecoders.Format, jekyllConfig map[string]any) (err error) {
-	title := "My New Hugo Site"
+	title := "My New Hugo Project"
 	baseURL := "http://example.org/"

 	for key, value := range jekyllConfig {
@@ -127,7 +127,7 @@ func (i *importCommand) createConfigFromJekyll(fs afero.Fs, inpath string, kind
 	in := map[string]any{
 		"baseURL":            baseURL,
 		"title":              title,
-		"languageCode":       "en-us",
+		"locale":             "en-us",
 		"disablePathToLower": true,
 	}

@@ -159,7 +159,7 @@ func (c *importCommand) getJekyllDirInfo(fs afero.Fs, jekyllRoot string) (map[st
 	return postDirs, hasAnyPost
 }

-func (c *importCommand) createSiteFromJekyll(jekyllRoot, targetDir string, jekyllPostDirs map[string]bool) error {
+func (c *importCommand) createProjectFromJekyll(jekyllRoot, targetDir string, jekyllPostDirs map[string]bool) error {
 	fs := &afero.OsFs{}
 	if exists, _ := helpers.Exists(targetDir, fs); exists {
 		if isDir, _ := helpers.IsDir(targetDir, fs); !isDir {
@@ -190,7 +190,7 @@ func (c *importCommand) createSiteFromJekyll(jekyllRoot, targetDir string, jekyl
 }

 func (c *importCommand) convertJekyllContent(m any, content string) (string, error) {
-	metadata, _ := maps.ToStringMapE(m)
+	metadata, _ := hmaps.ToStringMapE(m)

 	lines := strings.Split(content, "\n")
 	var resultLines []string
@@ -246,7 +246,7 @@ func (c *importCommand) convertJekyllContent(m any, content string) (string, err
 }

 func (c *importCommand) convertJekyllMetaData(m any, postName string, postDate time.Time, draft bool) (any, error) {
-	metadata, err := maps.ToStringMapE(m)
+	metadata, err := hmaps.ToStringMapE(m)
 	if err != nil {
 		return nil, err
 	}
@@ -419,7 +419,7 @@ func (c *importCommand) importFromJekyll(args []string) error {
 		return errors.New("abort: jekyll root contains neither posts nor drafts")
 	}

-	err = c.createSiteFromJekyll(jekyllRoot, targetDir, jekyllPostDirs)
+	err = c.createProjectFromJekyll(jekyllRoot, targetDir, jekyllPostDirs)
 	if err != nil {
 		return newUserError(err)
 	}
@@ -463,7 +463,7 @@ func (c *importCommand) importFromJekyll(args []string) error {
 	}

 	c.r.Println("Congratulations!", fileCount, "post(s) imported!")
-	c.r.Println("Now, start Hugo by yourself:\n")
+	c.r.Println("Now, start Hugo by yourself:")
 	c.r.Println("cd " + args[1])
 	c.r.Println("git init")
 	c.r.Println("git submodule add https://github.com/theNewDynamic/gohugo-theme-ananke themes/ananke")
@@ -21,12 +21,13 @@ import (

 	"github.com/bep/simplecobra"
 	"github.com/gohugoio/hugo/config"
+	"github.com/gohugoio/hugo/hugolib"
 	"github.com/gohugoio/hugo/modules/npm"
 	"github.com/spf13/cobra"
 )

 const commonUsageMod = `
-Note that Hugo will always start out by resolving the components defined in the site
+Note that Hugo will always start out by resolving the components defined in the project
 configuration, provided by a _vendor directory (if no --ignoreVendorPaths flag provided),
 Go Modules, or a folder inside the themes directory, in that order.

@@ -49,28 +50,34 @@ func newModCommands() *modCommands {
 		commands: []simplecobra.Commander{
 			&simpleCommand{
 				name:  "pack",
-				short: "Experimental: Prepares and writes a composite package.json file for your project",
-				long: `Prepares and writes a composite package.json file for your project.
+				short: "Merges module Node.js dependencies into an npm workspace",
+				long: `Merges Node.js dependencies from all Hugo modules into a "packages/hugoautogen" npm workspace.

-On first run it creates a "package.hugo.json" in the project root if not already there. This file will be used as a template file
-with the base dependency set.
+The merged dependencies are written to packages/hugoautogen/package.json, and the root package.json
+is updated with a "workspaces" entry pointing to "packages/hugoautogen".

-This set will be merged with all "package.hugo.json" files found in the dependency tree, picking the version closest to the project.
+The source entries are read from either package.hugo.json or package.json in the module root, with package.hugo.json taking precedence if both exist.

-This command is marked as 'Experimental'. We think it's a great idea, so it's not likely to be
-removed from Hugo, but we need to test this out in "real life" to get a feel of it,
-so this may/will change in future versions of Hugo.
+See [Node.js dependencies](/hugo-modules/nodejs-dependencies/) for more information.
 `,
 				withc: func(cmd *cobra.Command, r *rootCommand) {
 					cmd.ValidArgsFunction = cobra.NoFileCompletions
 					applyLocalFlagsBuildConfig(cmd, r)
 				},
 				run: func(ctx context.Context, cd *simplecobra.Commandeer, r *rootCommand, args []string) error {
-					h, err := r.Hugo(flagsToCfg(cd, nil))
+					cfg := flagsToCfg(cd, nil)
+					k := configKey{counter: r.configVersionID.Load(), skipNpmCheck: true}
+					h, _, err := r.hugoSites.GetOrCreate(k, func(key configKey) (*hugolib.HugoSites, error) {
+						conf, err := r.ConfigFromProvider(key, cfg)
+						if err != nil {
+							return nil, err
+						}
+						return hugolib.NewHugoSites(r.newDepsConfig(conf))
+					})
 					if err != nil {
 						return err
 					}
-					return npm.Pack(h.BaseFs.ProjectSourceFs, h.BaseFs.AssetsWithDuplicatesPreserved.Fs)
+					return npm.Pack(h.BaseFs.ProjectSourceFs, h.BaseFs.AssetsWithDuplicatesPreserved.Fs, h.Configs.Modules)
 				},
 			},
 		},
@@ -166,7 +173,7 @@ Note that for vendored modules, that is the version listed and not the one from
 					if all {
 						modCache := h.ResourceSpec.FileCaches.ModulesCache()
 						count, err := modCache.Prune(true)
-						r.Printf("Deleted %d files from module cache.", count)
+						r.Printf("Deleted %d directories from module cache.", count)
 						return err
 					}

@@ -293,7 +300,10 @@ Run "go help get" for more information. All flags available for "go get" is also
 							return err
 						}
 						client := conf.configs.ModulesClient
-						return client.Get(args...)
+						if err := client.Get(args...); err != nil {
+							return err
+						}
+						return nil
 					}
 				},
 			},
@@ -46,9 +46,9 @@ It will guess which kind of file to create based on the path provided.

 You can also specify the kind with ` + "`-k KIND`" + `.

-If archetypes are provided in your theme or site, they will be used.
+If archetypes are provided in your theme or project, they will be used.

-Ensure you run this within the root directory of your site.`,
+Ensure you run this within the root directory of your project.`,
 				run: func(ctx context.Context, cd *simplecobra.Commandeer, r *rootCommand, args []string) error {
 					if len(args) < 1 {
 						return newUserError("path needs to be provided")
@@ -76,10 +76,11 @@ Ensure you run this within the root directory of your site.`,
 				},
 			},
 			&simpleCommand{
-				name:  "site",
-				use:   "site [path]",
-				short: "Create a new site",
-				long:  `Create a new site at the specified path.`,
+				name:    "project",
+				use:     "project [path]",
+				short:   "Create a new project",
+				long:    `Create a new project at the specified path.`,
+				aliases: []string{"site"},
 				run: func(ctx context.Context, cd *simplecobra.Commandeer, r *rootCommand, args []string) error {
 					if len(args) < 1 {
 						return newUserError("path needs to be provided")
@@ -99,13 +100,13 @@ Ensure you run this within the root directory of your site.`,
 					}
 					sourceFs := conf.fs.Source

-					err = skeletons.CreateSite(createpath, sourceFs, force, format)
+					err = skeletons.CreateProject(createpath, sourceFs, force, format)
 					if err != nil {
 						return err
 					}

-					r.Printf("Congratulations! Your new Hugo site was created in %s.\n\n", createpath)
-					r.Println(c.newSiteNextStepsText(createpath, format))
+					r.Printf("Congratulations! Your new Hugo project was created in %s.\n\n", createpath)
+					r.Println(c.newProjectNextStepsText(createpath, format))

 					return nil
 				},
@@ -192,9 +193,9 @@ It will guess which kind of file to create based on the path provided.

 You can also specify the kind with ` + "`-k KIND`" + `.

-If archetypes are provided in your theme or site, they will be used.
+If archetypes are provided in your theme or project, they will be used.

-Ensure you run this within the root directory of your site.`
+Ensure you run this within the root directory of your project.`

 	cmd.RunE = nil
 	return nil
@@ -205,7 +206,7 @@ func (c *newCommand) PreRun(cd, runner *simplecobra.Commandeer) error {
 	return nil
 }

-func (c *newCommand) newSiteNextStepsText(path string, format string) string {
+func (c *newCommand) newProjectNextStepsText(path string, format string) string {
 	format = strings.ToLower(format)
 	var nextStepsText bytes.Buffer

@@ -246,7 +246,7 @@ func (f *fileServer) createEndpoint(i int) (*http.ServeMux, net.Listener, string
 	logger := f.c.r.logger

 	if i == 0 {
-		r.Printf("Environment: %q\n", f.c.hugoTry().Deps.Site.Hugo().Environment)
+		r.Printf("Environment: %q\n", f.c.hugoTry().Deps.Site.Hugo().Environment())
 		mainTarget := "disk"
 		if f.c.r.renderToMemory {
 			mainTarget = "memory"
@@ -282,7 +282,7 @@ func (f *fileServer) createEndpoint(i int) (*http.ServeMux, net.Listener, string
 					}

 					port = 1313
-					f.c.withConf(func(conf *commonConfig) {
+					f.c.withConfOrOldConf(func(conf *commonConfig) {
 						if lrport := conf.configs.GetFirstLanguageConfig().BaseURLLiveReload().Port(); lrport != 0 {
 							port = lrport
 						}
@@ -523,7 +523,7 @@ func (c *serverCommand) Run(ctx context.Context, cd *simplecobra.Commandeer, arg
 func (c *serverCommand) Init(cd *simplecobra.Commandeer) error {
 	cmd := cd.CobraCommand
 	cmd.Short = "Start the embedded web server"
-	cmd.Long = `Hugo provides its own webserver which builds and serves the site.
+	cmd.Long = `Hugo provides its own webserver which builds and serves the project.
 While hugo server is high performance, it is a webserver with limited options.

 The ` + "`" + `hugo server` + "`" + ` command will by default write and serve files from disk, but
@@ -531,8 +531,8 @@ you can render to memory by using the ` + "`" + `--renderToMemory` + "`" + ` fla
 faster in some cases, but it will consume more memory.

 By default hugo will also watch your files for any changes you make and
-automatically rebuild the site. It will then live reload any open browser pages
-and push the latest content to them. As most Hugo sites are built in a fraction
+automatically rebuild the project. It will then live reload any open browser pages
+and push the latest content to them. As most Hugo projects are built in a fraction
 of a second, you will be able to save and see your changes nearly instantly.`
 	cmd.Aliases = []string{"serve"}

@@ -553,7 +553,7 @@ of a second, you will be able to save and see your changes nearly instantly.`
 	cmd.Flags().BoolVarP(&c.serverAppend, "appendPort", "", true, "append port to baseURL")
 	cmd.Flags().BoolVar(&c.disableLiveReload, "disableLiveReload", false, "watch without enabling live browser reload on rebuild")
 	cmd.Flags().BoolVarP(&c.navigateToChanged, "navigateToChanged", "N", false, "navigate to changed content file on live browser reload")
-	cmd.Flags().BoolVarP(&c.openBrowser, "openBrowser", "O", false, "open the site in a browser after server startup")
+	cmd.Flags().BoolVarP(&c.openBrowser, "openBrowser", "O", false, "open the project in a browser after server startup")
 	cmd.Flags().BoolVar(&c.renderStaticToDisk, "renderStaticToDisk", false, "serve static files from disk and dynamic files from memory")
 	cmd.Flags().BoolVar(&c.disableFastRender, "disableFastRender", false, "enables full re-renders on changes")
 	cmd.Flags().BoolVar(&c.disableBrowserError, "disableBrowserError", false, "do not show build errors in the browser")
@@ -1160,14 +1160,14 @@ func (s *staticSyncer) syncsStaticEvents(staticEvents []fsnotify.Event) error {
 	return err
 }

+// chmodFilter is a ChmodFilter for static syncing.
+// Returns true to skip syncing permissions for directories and files without
+// owner-write permission. The primary use case is files from the module cache (0444).
 func chmodFilter(dst, src os.FileInfo) bool {
-	// Hugo publishes data from multiple sources, potentially
-	// with overlapping directory structures. We cannot sync permissions
-	// for directories as that would mean that we might end up with write-protected
-	// directories inside /public.
-	// One example of this would be syncing from the Go Module cache,
-	// which have 0555 directories.
-	return src.IsDir()
+	if src.IsDir() {
+		return true
+	}
+	return src.Mode().Perm()&0o200 == 0
 }

 func cleanErrorLog(content string) string {
@@ -21,24 +21,24 @@ import (
 	"github.com/gohugoio/hugo/common/hiter"
 )

-// Stack is a simple LIFO stack that is safe for concurrent use.
-type Stack[T any] struct {
+// StackThreadSafe is a simple LIFO stack that is safe for concurrent use.
+type StackThreadSafe[T any] struct {
 	items []T
 	zero  T
 	mu    sync.RWMutex
 }

-func NewStack[T any]() *Stack[T] {
-	return &Stack[T]{}
+func NewStackThreadSafe[T any]() *StackThreadSafe[T] {
+	return &StackThreadSafe[T]{}
 }

-func (s *Stack[T]) Push(item T) {
+func (s *StackThreadSafe[T]) Push(item T) {
 	s.mu.Lock()
 	defer s.mu.Unlock()
 	s.items = append(s.items, item)
 }

-func (s *Stack[T]) Pop() (T, bool) {
+func (s *StackThreadSafe[T]) Pop() (T, bool) {
 	s.mu.Lock()
 	defer s.mu.Unlock()
 	if len(s.items) == 0 {
@@ -49,7 +49,7 @@ func (s *Stack[T]) Pop() (T, bool) {
 	return item, true
 }

-func (s *Stack[T]) Peek() (T, bool) {
+func (s *StackThreadSafe[T]) Peek() (T, bool) {
 	s.mu.RLock()
 	defer s.mu.RUnlock()
 	if len(s.items) == 0 {
@@ -58,18 +58,18 @@ func (s *Stack[T]) Peek() (T, bool) {
 	return s.items[len(s.items)-1], true
 }

-func (s *Stack[T]) Len() int {
+func (s *StackThreadSafe[T]) Len() int {
 	s.mu.RLock()
 	defer s.mu.RUnlock()
 	return len(s.items)
 }

 // All returns all items in the stack, from bottom to top.
-func (s *Stack[T]) All() iter.Seq2[int, T] {
+func (s *StackThreadSafe[T]) All() iter.Seq2[int, T] {
 	return hiter.Lock2(slices.All(s.items), s.mu.RLock, s.mu.RUnlock)
 }

-func (s *Stack[T]) Drain() []T {
+func (s *StackThreadSafe[T]) Drain() []T {
 	s.mu.Lock()
 	defer s.mu.Unlock()
 	items := s.items
@@ -77,7 +77,7 @@ func (s *Stack[T]) Drain() []T {
 	return items
 }

-func (s *Stack[T]) DrainMatching(predicate func(T) bool) []T {
+func (s *StackThreadSafe[T]) DrainMatching(predicate func(T) bool) []T {
 	s.mu.Lock()
 	defer s.mu.Unlock()
 	var items []T
@@ -89,3 +89,47 @@ func (s *Stack[T]) DrainMatching(predicate func(T) bool) []T {
 	}
 	return items
 }
+
+// Stack is a simple LIFO stack that is not safe for concurrent use.
+type Stack[T any] struct {
+	items []T
+	zero  T
+}
+
+func NewStack[T any]() *Stack[T] {
+	return &Stack[T]{}
+}
+
+func (s *Stack[T]) Push(item T) {
+	s.items = append(s.items, item)
+}
+
+func (s *Stack[T]) Pop() (T, bool) {
+	if len(s.items) == 0 {
+		return s.zero, false
+	}
+	item := s.items[len(s.items)-1]
+	s.items = s.items[:len(s.items)-1]
+	return item, true
+}
+
+func (s *Stack[T]) Peek() (T, bool) {
+	if len(s.items) == 0 {
+		return s.zero, false
+	}
+	return s.items[len(s.items)-1], true
+}
+
+func (s *Stack[T]) Len() int {
+	return len(s.items)
+}
+
+func (s *Stack[T]) All() iter.Seq2[int, T] {
+	return slices.All(s.items)
+}
+
+func (s *Stack[T]) Drain() []T {
+	items := s.items
+	s.items = nil
+	return items
+}
@@ -10,7 +10,7 @@ func TestNewStack(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)

-	s := NewStack[int]()
+	s := NewStackThreadSafe[int]()

 	c.Assert(s, qt.IsNotNil)
 }
@@ -19,7 +19,7 @@ func TestStackBasic(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)

-	s := NewStack[int]()
+	s := NewStackThreadSafe[int]()

 	c.Assert(s.Len(), qt.Equals, 0)

@@ -50,7 +50,7 @@ func TestStackDrain(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)

-	s := NewStack[string]()
+	s := NewStackThreadSafe[string]()
 	s.Push("a")
 	s.Push("b")

@@ -64,7 +64,7 @@ func TestStackDrainMatching(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)

-	s := NewStack[int]()
+	s := NewStackThreadSafe[int]()
 	s.Push(1)
 	s.Push(2)
 	s.Push(3)
@@ -87,11 +87,13 @@ func XXHashFromString(s string) (uint64, error) {
 	return h.Sum64(), nil
 }

-// XxHashFromStringHexEncoded calculates the xxHash for the given string
+// XxHashFromStringHexEncoded calculates the xxHash for the given strings
 // and returns the hash as a hex encoded string.
-func XxHashFromStringHexEncoded(f string) string {
+func XxHashFromStringHexEncoded(s ...string) string {
 	h := xxhash.New()
-	h.WriteString(f)
+	for _, f := range s {
+		h.WriteString(f)
+	}
 	hash := h.Sum(nil)
 	return hex.EncodeToString(hash)
 }
@@ -38,9 +38,7 @@ func TestXxHashFromReaderPara(t *testing.T) {

 	var wg sync.WaitGroup
 	for i := range 10 {
-		wg.Add(1)
-		go func() {
-			defer wg.Done()
+		wg.Go(func() {
 			for j := range 100 {
 				s := strings.Repeat("Hello ", i+j+1*42)
 				r := strings.NewReader(s)
@@ -50,7 +48,7 @@ func TestXxHashFromReaderPara(t *testing.T) {
 				expect, _ := XXHashFromString(s)
 				c.Assert(got, qt.Equals, expect)
 			}
-		}()
+		})
 	}

 	wg.Wait()
@@ -288,6 +288,50 @@ func Unwrap(err error) error {
 	return err
 }

+// UnwrapFileErrors returns all FileError contained in err.
+func UnwrapFileErrors(err error) []FileError {
+	if err == nil {
+		return nil
+	}
+	errs := Errors(err)
+	var fileErrors []FileError
+	for _, e := range errs {
+		if v, ok := e.(FileError); ok {
+			fileErrors = append(fileErrors, v)
+		}
+		fileErrors = append(fileErrors, UnwrapFileErrors(errors.Unwrap(e))...)
+	}
+	return fileErrors
+}
+
+// UnwrapFileErrorsWithErrorContext tries to unwrap all FileError in err that has an ErrorContext.
+func UnwrapFileErrorsWithErrorContext(err error) []FileError {
+	errs := UnwrapFileErrors(err)
+	var n int
+	for _, e := range errs {
+		if e.ErrorContext() != nil {
+			errs[n] = e
+			n++
+		}
+	}
+	return errs[:n]
+}
+
+// Errors returns the list of errors contained in err.
+func Errors(err error) []error {
+	if err == nil {
+		return nil
+	}
+
+	type unwrapper interface {
+		Unwrap() []error
+	}
+	if u, ok := err.(unwrapper); ok {
+		return u.Unwrap()
+	}
+	return []error{err}
+}
+
 func extractFileTypePos(err error) (string, text.Position) {
 	err = Unwrap(err)

@@ -350,30 +394,6 @@ func UnwrapFileError(err error) FileError {
 	return nil
 }

-// UnwrapFileErrors tries to unwrap all FileError.
-func UnwrapFileErrors(err error) []FileError {
-	var errs []FileError
-	for err != nil {
-		if v, ok := err.(FileError); ok {
-			errs = append(errs, v)
-		}
-		err = errors.Unwrap(err)
-	}
-	return errs
-}
-
-// UnwrapFileErrorsWithErrorContext tries to unwrap all FileError in err that has an ErrorContext.
-func UnwrapFileErrorsWithErrorContext(err error) []FileError {
-	var errs []FileError
-	for err != nil {
-		if v, ok := err.(FileError); ok && v.ErrorContext() != nil {
-			errs = append(errs, v)
-		}
-		err = errors.Unwrap(err)
-	}
-	return errs
-}
-
 func extractOffsetAndType(e error) (int, string) {
 	switch v := e.(type) {
 	case *json.UnmarshalTypeError:
@@ -32,15 +32,15 @@ func TestNewFileError(t *testing.T) {
 	fe := NewFileErrorFromName(errors.New("bar"), "foo.html")
 	c.Assert(fe.Error(), qt.Equals, `"foo.html:1:1": bar`)

-	lines := ""
+	var lines strings.Builder
 	for i := 1; i <= 100; i++ {
-		lines += fmt.Sprintf("line %d\n", i)
+		lines.WriteString(fmt.Sprintf("line %d\n", i))
 	}

 	fe.UpdatePosition(text.Position{LineNumber: 32, ColumnNumber: 2})
 	c.Assert(fe.Error(), qt.Equals, `"foo.html:32:2": bar`)
 	fe.UpdatePosition(text.Position{LineNumber: 0, ColumnNumber: 0, Offset: 212})
-	fe.UpdateContent(strings.NewReader(lines), nil)
+	fe.UpdateContent(strings.NewReader(lines.String()), nil)
 	c.Assert(fe.Error(), qt.Equals, `"foo.html:32:0": bar`)
 	errorContext := fe.ErrorContext()
 	c.Assert(errorContext, qt.IsNotNil)
@@ -27,8 +27,8 @@ import (
 	"sync"

 	"github.com/bep/logg"
+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/gohugoio/hugo/common/loggers"
-	"github.com/gohugoio/hugo/common/maps"
 	"github.com/gohugoio/hugo/config"
 	"github.com/gohugoio/hugo/config/security"
 )
@@ -102,7 +102,7 @@ func New(cfg security.Config, workingDir string, log loggers.Logger) *Exec {
 		workingDir:        workingDir,
 		infol:             log.InfoCommand("exec"),
 		baseEnviron:       baseEnviron,
-		newNPXRunnerCache: maps.NewCache[string, func(arg ...any) (Runner, error)](),
+		newNPXRunnerCache: hmaps.NewCache[string, func(arg ...any) (Runner, error)](),
 	}
 }

@@ -121,7 +121,7 @@ type Exec struct {
 	// os.Environ filtered by the Exec.OsEnviron whitelist filter.
 	baseEnviron []string

-	newNPXRunnerCache *maps.Cache[string, func(arg ...any) (Runner, error)]
+	newNPXRunnerCache *hmaps.Cache[string, func(arg ...any) (Runner, error)]
 	npxInit           sync.Once
 	npxAvailable      bool
 }
@@ -0,0 +1,67 @@
+// Copyright 2025 The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package himage provides some high level image types and interfaces.
+package himage
+
+import "image"
+
+// AnimatedImage represents an animated image.
+// This is currently supported for GIF and WebP images.
+type AnimatedImage interface {
+	image.Image        // The first frame.
+	GetRaw() any       // *gif.GIF or *WEBP.
+	GetLoopCount() int // Number of times to loop the animation. 0 means infinite.
+	ImageFrames
+}
+
+// ImageFrames provides access to the frames of an animated image.
+type ImageFrames interface {
+	GetFrames() []image.Image
+
+	// Frame durations in milliseconds.
+	// Note that Gif frame durations are in 100ths of a second,
+	// so they need to be multiplied by 10 to get milliseconds and vice versa.
+	GetFrameDurations() []int
+
+	SetFrames(frames []image.Image)
+	SetWidthHeight(width, height int)
+}
+
+// ImageConfigProvider provides access to the image.Config of an image.
+type ImageConfigProvider interface {
+	GetImageConfig() image.Config
+}
+
+// FrameDurationsToGifDelays converts frame durations in milliseconds to
+// GIF delays in 100ths of a second.
+func FrameDurationsToGifDelays(frameDurations []int) []int {
+	delays := make([]int, len(frameDurations))
+	for i, fd := range frameDurations {
+		delays[i] = fd / 10
+		if delays[i] == 0 && fd > 0 {
+			delays[i] = 1
+		}
+	}
+	return delays
+}
+
+// GifDelaysToFrameDurations converts GIF delays in 100ths of a second to
+// frame durations in milliseconds.
+func GifDelaysToFrameDurations(delays []int) []int {
+	frameDurations := make([]int, len(delays))
+	for i, d := range delays {
+		frameDurations[i] = d * 10
+	}
+	return frameDurations
+}
@@ -1,4 +1,4 @@
-// Copyright 2024 The Hugo Authors. All rights reserved.
+// Copyright 2026 The Hugo Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.

-package maps
+package hmaps

 import (
 	"sync"
@@ -1,4 +1,4 @@
-// Copyright 2025 The Hugo Authors. All rights reserved.
+// Copyright 2026 The Hugo Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.

-package maps
+package hmaps

 import (
 	"testing"
@@ -1,4 +1,4 @@
-// Copyright 2025 The Hugo Authors. All rights reserved.
+// Copyright 2026 The Hugo Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.

-package maps
+package hmaps

 import (
 	"iter"
@@ -73,11 +73,23 @@ func (m *Map[K, T]) Set(key K, value T) {
 	m.mu.Unlock()
 }

-// WithWriteLock executes the given function with a write lock on the map.
-func (m *Map[K, T]) WithWriteLock(f func(m map[K]T)) {
+// Delete deletes the given key from the map.
+// It returns true if the key was found and deleted, false otherwise.
+func (m *Map[K, T]) Delete(key K) bool {
 	m.mu.Lock()
 	defer m.mu.Unlock()
-	f(m.m)
+	if _, found := m.m[key]; found {
+		delete(m.m, key)
+		return true
+	}
+	return false
+}
+
+// WithWriteLock executes the given function with a write lock on the map.
+func (m *Map[K, T]) WithWriteLock(f func(m map[K]T) error) error {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+	return f(m.m)
 }

 // SetIfAbsent sets the given key to the given value if the key does not already exist in the map.
@@ -1,4 +1,4 @@
-// Copyright 2025 The Hugo Authors. All rights reserved.
+// Copyright 2026 The Hugo Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.

-package maps
+package hmaps

 import (
 	"testing"
@@ -62,8 +62,9 @@ func TestMap(t *testing.T) {
 	c.Assert(found, qt.Equals, true)
 	c.Assert(v, qt.Equals, 300)

-	m.WithWriteLock(func(m map[string]int) {
+	m.WithWriteLock(func(m map[string]int) error {
 		m["f"] = 500
+		return nil
 	})
 	v, found = m.Lookup("f")
 	c.Assert(found, qt.Equals, true)
@@ -1,4 +1,4 @@
-// Copyright 2018 The Hugo Authors. All rights reserved.
+// Copyright 2026 The Hugo Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.

-package maps
+package hmaps

 import (
 	"fmt"
@@ -1,4 +1,4 @@
-// Copyright 2018 The Hugo Authors. All rights reserved.
+// Copyright 2026 The Hugo Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.

-package maps
+package hmaps

 import (
 	"fmt"
@@ -1,4 +1,4 @@
-// Copyright 2024 The Hugo Authors. All rights reserved.
+// Copyright 2026 The Hugo Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.

-package maps
+package hmaps

 import (
 	"slices"
@@ -1,4 +1,4 @@
-// Copyright 2024 The Hugo Authors. All rights reserved.
+// Copyright 2026 The Hugo Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.

-package maps
+package hmaps

 import (
 	"testing"
@@ -1,4 +1,4 @@
-// Copyright 2025 The Hugo Authors. All rights reserved.
+// Copyright 2026 The Hugo Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.

-package maps
+package hmaps

 import (
 	"fmt"
@@ -1,4 +1,4 @@
-// Copyright 2025 The Hugo Authors. All rights reserved.
+// Copyright 2026 The Hugo Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.

-package maps
+package hmaps

 import (
 	"testing"
@@ -1,4 +1,4 @@
-// Copyright 2019 The Hugo Authors. All rights reserved.
+// Copyright 2026 The Hugo Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.

-package maps
+package hmaps

 import (
 	"errors"
@@ -1,4 +1,4 @@
-// Copyright 2019 The Hugo Authors. All rights reserved.
+// Copyright 2026 The Hugo Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.

-package maps
+package hmaps

 import (
 	"testing"
@@ -96,7 +96,7 @@ func errConvert(v reflect.Value, s string) error {
 // See Issue 14079.
 func ConvertIfPossible(val reflect.Value, typ reflect.Type) (reflect.Value, bool) {
 	switch val.Kind() {
-	case reflect.Ptr, reflect.Interface:
+	case reflect.Pointer, reflect.Interface:
 		if val.IsNil() {
 			// Return typ's zero value.
 			return reflect.Zero(typ), true
@@ -20,14 +20,14 @@ import (
 	"sync"
 	"time"

+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/gohugoio/hugo/common/htime"
-	"github.com/gohugoio/hugo/common/maps"
 	"github.com/gohugoio/hugo/common/types"
 )

 // IsInterfaceOrPointer returns whether the given kind is an interface or a pointer.
 func IsInterfaceOrPointer(kind reflect.Kind) bool {
-	return kind == reflect.Interface || kind == reflect.Ptr
+	return kind == reflect.Interface || kind == reflect.Pointer
 }

 // TODO(bep) replace the private versions in /tpl with these.
@@ -92,7 +92,7 @@ func IsSlice(v any) bool {
 	return reflect.ValueOf(v).Kind() == reflect.Slice
 }

-var zeroType = reflect.TypeOf((*types.Zeroer)(nil)).Elem()
+var zeroType = reflect.TypeFor[types.Zeroer]()

 var isZeroCache sync.Map

@@ -136,7 +136,7 @@ func IsTruthfulValue(val reflect.Value) (truth bool) {
 		truth = val.Bool()
 	case reflect.Complex64, reflect.Complex128:
 		truth = val.Complex() != 0
-	case reflect.Chan, reflect.Func, reflect.Ptr, reflect.Interface:
+	case reflect.Chan, reflect.Func, reflect.Pointer, reflect.UnsafePointer, reflect.Interface:
 		truth = !val.IsNil()
 	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
 		truth = val.Int() != 0
@@ -216,8 +216,8 @@ func GetMethodIndexByName(tp reflect.Type, name string) int {
 }

 var (
-	timeType           = reflect.TypeOf((*time.Time)(nil)).Elem()
-	asTimeProviderType = reflect.TypeOf((*htime.AsTimeProvider)(nil)).Elem()
+	timeType           = reflect.TypeFor[time.Time]()
+	asTimeProviderType = reflect.TypeFor[htime.AsTimeProvider]()
 )

 // IsTime returns whether tp is a time.Time type or if it can be converted into one
@@ -240,7 +240,7 @@ func IsValid(v reflect.Value) bool {
 	}

 	switch v.Kind() {
-	case reflect.Chan, reflect.Func, reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice:
+	case reflect.Chan, reflect.Func, reflect.Interface, reflect.Map, reflect.Pointer, reflect.Slice:
 		return !v.IsNil()
 	}

@@ -347,15 +347,15 @@ func IsNil(v reflect.Value) bool {
 		return true
 	}
 	switch v.Kind() {
-	case reflect.Chan, reflect.Func, reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice:
+	case reflect.Chan, reflect.Func, reflect.Interface, reflect.Map, reflect.Pointer, reflect.Slice:
 		return v.IsNil()
 	}
 	return false
 }

-var contextInterface = reflect.TypeOf((*context.Context)(nil)).Elem()
+var contextInterface = reflect.TypeFor[context.Context]()

-var isContextCache = maps.NewCache[reflect.Type, bool]()
+var isContextCache = hmaps.NewCache[reflect.Type, bool]()

 type k string

@@ -18,10 +18,10 @@ import (
 	"strings"
 	"time"

+	"github.com/bep/golocales"
+
 	"github.com/bep/clocks"
 	"github.com/spf13/cast"
-
-	"github.com/gohugoio/locales"
 )

 var (
@@ -78,9 +78,9 @@ var (
 	Clock = clocks.System()
 )

-func NewTimeFormatter(ltr locales.Translator) TimeFormatter {
+func NewTimeFormatter(ltr golocales.Translator) TimeFormatter {
 	if ltr == nil {
-		panic("must provide a locales.Translator")
+		panic("must provide a golocales.Translator")
 	}
 	return TimeFormatter{
 		ltr: ltr,
@@ -89,7 +89,7 @@ func NewTimeFormatter(ltr locales.Translator) TimeFormatter {

 // TimeFormatter is locale aware.
 type TimeFormatter struct {
-	ltr locales.Translator
+	ltr golocales.Translator
 }

 func (f TimeFormatter) Format(t time.Time, layout string) string {
@@ -101,39 +101,39 @@ func (f TimeFormatter) Format(t time.Time, layout string) string {
 		// It may be one of Hugo's custom layouts.
 		switch strings.ToLower(layout[1:]) {
 		case "date_full":
-			return f.ltr.FmtDateFull(t)
+			return f.ltr.FormatDateFull(t)
 		case "date_long":
-			return f.ltr.FmtDateLong(t)
+			return f.ltr.FormatDateLong(t)
 		case "date_medium":
-			return f.ltr.FmtDateMedium(t)
+			return f.ltr.FormatDateMedium(t)
 		case "date_short":
-			return f.ltr.FmtDateShort(t)
+			return f.ltr.FormatDateShort(t)
 		case "time_full":
-			return f.ltr.FmtTimeFull(t)
+			return f.ltr.FormatTimeFull(t)
 		case "time_long":
-			return f.ltr.FmtTimeLong(t)
+			return f.ltr.FormatTimeLong(t)
 		case "time_medium":
-			return f.ltr.FmtTimeMedium(t)
+			return f.ltr.FormatTimeMedium(t)
 		case "time_short":
-			return f.ltr.FmtTimeShort(t)
+			return f.ltr.FormatTimeShort(t)
 		}
 	}

 	s := t.Format(layout)

-	monthIdx := t.Month() - 1 // Month() starts at 1.
+	monthIdx := t.Month() - 1 // time.Month is 1-based, but our month name slices are 0-based.
 	dayIdx := t.Weekday()

 	if strings.Contains(layout, "January") {
-		s = strings.ReplaceAll(s, longMonthNames[monthIdx], f.ltr.MonthWide(t.Month()))
+		s = strings.ReplaceAll(s, longMonthNames[monthIdx], f.ltr.MonthsWide()[monthIdx])
 	} else if strings.Contains(layout, "Jan") {
-		s = strings.ReplaceAll(s, shortMonthNames[monthIdx], f.ltr.MonthAbbreviated(t.Month()))
+		s = strings.ReplaceAll(s, shortMonthNames[monthIdx], f.ltr.MonthsAbbreviated()[monthIdx])
 	}

 	if strings.Contains(layout, "Monday") {
-		s = strings.ReplaceAll(s, longDayNames[dayIdx], f.ltr.WeekdayWide(t.Weekday()))
+		s = strings.ReplaceAll(s, longDayNames[dayIdx], f.ltr.WeekdaysWide()[dayIdx])
 	} else if strings.Contains(layout, "Mon") {
-		s = strings.ReplaceAll(s, shortDayNames[dayIdx], f.ltr.WeekdayAbbreviated(t.Weekday()))
+		s = strings.ReplaceAll(s, shortDayNames[dayIdx], f.ltr.WeekdaysAbbreviated()[dayIdx])
 	}

 	return s
@@ -17,8 +17,9 @@ import (
 	"testing"
 	"time"

+	"github.com/bep/golocales"
+
 	qt "github.com/frankban/quicktest"
-	translators "github.com/gohugoio/localescompressed"
 )

 func TestTimeFormatter(t *testing.T) {
@@ -34,7 +35,7 @@ func TestTimeFormatter(t *testing.T) {
 	mondayNovemberFirst = mondayNovemberFirst.Add(33 * time.Second)

 	c.Run("Norsk nynorsk", func(c *qt.C) {
-		f := NewTimeFormatter(translators.GetTranslator("nn"))
+		f := NewTimeFormatter(golocales.New("nn"))

 		c.Assert(f.Format(june06, "Monday Jan 2 2006"), qt.Equals, "onsdag juni 6 2018")
 		c.Assert(f.Format(june06, "Mon January 2 2006"), qt.Equals, "on. juni 6 2018")
@@ -42,35 +43,35 @@ func TestTimeFormatter(t *testing.T) {
 	})

 	c.Run("Custom layouts Norsk nynorsk", func(c *qt.C) {
-		f := NewTimeFormatter(translators.GetTranslator("nn"))
+		f := NewTimeFormatter(golocales.New("nn"))

 		c.Assert(f.Format(june06, ":date_full"), qt.Equals, "onsdag 6. juni 2018")
 		c.Assert(f.Format(june06, ":date_long"), qt.Equals, "6. juni 2018")
 		c.Assert(f.Format(june06, ":date_medium"), qt.Equals, "6. juni 2018")
-		c.Assert(f.Format(june06, ":date_short"), qt.Equals, "06.06.2018")
+		c.Assert(f.Format(june06, ":date_short"), qt.Equals, "06.06.18")

-		c.Assert(f.Format(june06, ":time_full"), qt.Equals, "kl. 02:09:37 UTC")
+		c.Assert(f.Format(june06, ":time_full"), qt.Equals, "02:09:37 UTC")
 		c.Assert(f.Format(june06, ":time_long"), qt.Equals, "02:09:37 UTC")
 		c.Assert(f.Format(june06, ":time_medium"), qt.Equals, "02:09:37")
 		c.Assert(f.Format(june06, ":time_short"), qt.Equals, "02:09")
 	})

 	c.Run("Custom layouts English", func(c *qt.C) {
-		f := NewTimeFormatter(translators.GetTranslator("en"))
+		f := NewTimeFormatter(golocales.New("en"))

 		c.Assert(f.Format(june06, ":date_full"), qt.Equals, "Wednesday, June 6, 2018")
 		c.Assert(f.Format(june06, ":date_long"), qt.Equals, "June 6, 2018")
 		c.Assert(f.Format(june06, ":date_medium"), qt.Equals, "Jun 6, 2018")
 		c.Assert(f.Format(june06, ":date_short"), qt.Equals, "6/6/18")

-		c.Assert(f.Format(june06, ":time_full"), qt.Equals, "2:09:37 am UTC")
-		c.Assert(f.Format(june06, ":time_long"), qt.Equals, "2:09:37 am UTC")
-		c.Assert(f.Format(june06, ":time_medium"), qt.Equals, "2:09:37 am")
-		c.Assert(f.Format(june06, ":time_short"), qt.Equals, "2:09 am")
+		c.Assert(f.Format(june06, ":time_full"), qt.Equals, "2:09:37\u202fam UTC")
+		c.Assert(f.Format(june06, ":time_long"), qt.Equals, "2:09:37\u202fam UTC")
+		c.Assert(f.Format(june06, ":time_medium"), qt.Equals, "2:09:37\u202fam")
+		c.Assert(f.Format(june06, ":time_short"), qt.Equals, "2:09\u202fam")
 	})

 	c.Run("English", func(c *qt.C) {
-		f := NewTimeFormatter(translators.GetTranslator("en"))
+		f := NewTimeFormatter(golocales.New("en"))

 		c.Assert(f.Format(june06, "Monday Jan 2 2006"), qt.Equals, "Wednesday Jun 6 2018")
 		c.Assert(f.Format(june06, "Mon January 2 2006"), qt.Equals, "Wed June 6 2018")
@@ -78,31 +79,31 @@ func TestTimeFormatter(t *testing.T) {
 	})

 	c.Run("Weekdays German", func(c *qt.C) {
-		tr := translators.GetTranslator("de")
+		tr := golocales.New("de")
 		f := NewTimeFormatter(tr)

 		// Issue #9107
 		for i, weekDayWideGerman := range []string{"Montag", "Dienstag", "Mittwoch", "Donnerstag", "Freitag", "Samstag", "Sonntag"} {
 			date := mondayNovemberFirst.Add(time.Duration(i*24) * time.Hour)
-			c.Assert(tr.WeekdayWide(date.Weekday()), qt.Equals, weekDayWideGerman)
+			c.Assert(tr.WeekdaysWide()[date.Weekday()], qt.Equals, weekDayWideGerman)
 			c.Assert(f.Format(date, "Monday"), qt.Equals, weekDayWideGerman)
 		}

 		for i, weekDayAbbreviatedGerman := range []string{"Mo.", "Di.", "Mi.", "Do.", "Fr.", "Sa.", "So."} {
 			date := mondayNovemberFirst.Add(time.Duration(i*24) * time.Hour)
-			c.Assert(tr.WeekdayAbbreviated(date.Weekday()), qt.Equals, weekDayAbbreviatedGerman)
+			c.Assert(tr.WeekdaysAbbreviated()[date.Weekday()], qt.Equals, weekDayAbbreviatedGerman)
 			c.Assert(f.Format(date, "Mon"), qt.Equals, weekDayAbbreviatedGerman)
 		}
 	})

 	c.Run("Months German", func(c *qt.C) {
-		tr := translators.GetTranslator("de")
+		tr := golocales.New("de")
 		f := NewTimeFormatter(tr)

 		// Issue #9107
 		for i, monthWideNorway := range []string{"Januar", "Februar", "März", "April", "Mai", "Juni", "Juli"} {
 			date := jan06.Add(time.Duration(i*24*31) * time.Hour)
-			c.Assert(tr.MonthWide(date.Month()), qt.Equals, monthWideNorway)
+			c.Assert(tr.MonthsWide()[date.Month()-1], qt.Equals, monthWideNorway)
 			c.Assert(f.Format(date, "January"), qt.Equals, monthWideNorway)
 		}
 	})
@@ -121,7 +122,7 @@ func BenchmarkTimeFormatter(b *testing.B) {
 	})

 	b.Run("Localized", func(b *testing.B) {
-		f := NewTimeFormatter(translators.GetTranslator("nn"))
+		f := NewTimeFormatter(golocales.New("nn"))
 		b.ResetTimer()
 		for b.Loop() {
 			got := f.Format(june06, "Monday Jan 2 2006")
@@ -132,7 +133,7 @@ func BenchmarkTimeFormatter(b *testing.B) {
 	})

 	b.Run("Localized Custom", func(b *testing.B) {
-		f := NewTimeFormatter(translators.GetTranslator("nn"))
+		f := NewTimeFormatter(golocales.New("nn"))
 		b.ResetTimer()
 		for b.Loop() {
 			got := f.Format(june06, ":date_medium")
@@ -19,19 +19,37 @@ import (
 	"strings"
 )

-// ReadSeeker wraps io.Reader and io.Seeker.
-type ReadSeeker interface {
-	io.Reader
-	io.Seeker
-}
-
 // ReadSeekCloser is implemented by afero.File. We use this as the common type for
 // content in Resource objects, even for strings.
 type ReadSeekCloser interface {
-	ReadSeeker
+	io.ReadSeeker
 	io.Closer
 }

+// Sizer provides the size of, typically, a io.Reader.
+// As implemented by e.g. os.File and io.SectionReader.
+type Sizer interface {
+	Size() int64
+}
+
+type SizeReader interface {
+	io.Reader
+	Sizer
+}
+
+// ToSizeReader converts the given io.Reader to a SizeReader.
+// Note that if r is not a SizeReader, the entire content will be read into memory
+func ToSizeReader(r io.Reader) (SizeReader, error) {
+	if sr, ok := r.(SizeReader); ok {
+		return sr, nil
+	}
+	b, err := io.ReadAll(r)
+	if err != nil {
+		return nil, err
+	}
+	return bytes.NewReader(b), nil
+}
+
 // CloserFunc is an adapter to allow the use of ordinary functions as io.Closers.
 type CloserFunc func() error

@@ -46,7 +64,7 @@ type ReadSeekCloserProvider interface {

 // readSeekerNopCloser implements ReadSeekCloser by doing nothing in Close.
 type readSeekerNopCloser struct {
-	ReadSeeker
+	io.ReadSeeker
 }

 // Close does nothing.
@@ -55,7 +73,7 @@ func (r readSeekerNopCloser) Close() error {
 }

 // NewReadSeekerNoOpCloser creates a new ReadSeekerNoOpCloser with the given ReadSeeker.
-func NewReadSeekerNoOpCloser(r ReadSeeker) ReadSeekCloser {
+func NewReadSeekerNoOpCloser(r io.ReadSeeker) ReadSeekCloser {
 	return readSeekerNopCloser{r}
 }

@@ -87,6 +105,22 @@ func NewReadSeekerNoOpCloserFromBytes(content []byte) readSeekerNopCloser {
 	return readSeekerNopCloser{bytes.NewReader(content)}
 }

+// NewReadSeekerNoOpCloserFromReader creates a new ReadSeekerNoOpCloser from the given io.Reader.
+// If the given io.Reader is not an io.ReadSeeker, the entire content will be read into memory.
+func NewReadSeekerNoOpCloserFromReader(r io.Reader) (readSeekerNopCloser, error) {
+	var rs io.ReadSeeker
+	if s, ok := r.(io.ReadSeeker); ok {
+		rs = s
+	} else {
+		b, err := io.ReadAll(r)
+		if err != nil {
+			return readSeekerNopCloser{rs}, err
+		}
+		rs = bytes.NewReader(b)
+	}
+	return readSeekerNopCloser{rs}, nil
+}
+
 // NewOpenReadSeekCloser creates a new ReadSeekCloser from the given ReadSeeker.
 // The ReadSeeker will be seeked to the beginning before returned.
 func NewOpenReadSeekCloser(r ReadSeekCloser) OpenReadSeekCloser {
@@ -16,7 +16,6 @@ package hugo
 import (
 	"context"
 	"fmt"
-	"html/template"
 	"os"
 	"path/filepath"
 	"runtime/debug"
@@ -25,17 +24,16 @@ import (
 	"sync"
 	"time"

+	"github.com/bep/helpers/contexthelpers"
 	"github.com/bep/logg"

 	"github.com/bep/godartsass/v2"

 	"github.com/gohugoio/hugo/common/hexec"
-	"github.com/gohugoio/hugo/common/hstore"
 	"github.com/gohugoio/hugo/common/loggers"
 	"github.com/gohugoio/hugo/common/version"
 	"github.com/gohugoio/hugo/hugofs/files"

-	"github.com/bep/helpers/contexthelpers"
 	"github.com/spf13/afero"

 	iofs "io/fs"
@@ -56,89 +54,24 @@ var (
 	vendorInfo string
 )

-var _ hstore.StoreProvider = (*HugoInfo)(nil)
-
-// HugoInfo contains information about the current Hugo environment
-type HugoInfo struct {
-	CommitHash string
-	BuildDate  string
-
-	// The build environment.
-	// Defaults are "production" (hugo) and "development" (hugo server).
-	// This can also be set by the user.
-	// It can be any string, but it will be all lower case.
-	Environment string
-
-	// version of go that the Hugo binary was built with
-	GoVersion string
-
-	conf ConfigProvider
-	deps []*Dependency
-
-	store *hstore.Scratch
-
-	// Context gives access to some of the context scoped variables.
-	Context Context
+// BuildInfo holds build information extracted from runtime/debug.
+type BuildInfo struct {
+	Revision     string
+	RevisionTime string
+	GoVersion    string
 }

-// Version returns the current version as a comparable version string.
-func (i HugoInfo) Version() version.VersionString {
-	return CurrentVersion.Version()
-}
-
-// Generator a Hugo meta generator HTML tag.
-func (i HugoInfo) Generator() template.HTML {
-	return template.HTML(fmt.Sprintf(`<meta name="generator" content="Hugo %s">`, CurrentVersion.String()))
-}
-
-// IsDevelopment reports whether the current running environment is "development".
-func (i HugoInfo) IsDevelopment() bool {
-	return i.Environment == EnvironmentDevelopment
-}
-
-// IsProduction reports whether the current running environment is "production".
-func (i HugoInfo) IsProduction() bool {
-	return i.Environment == EnvironmentProduction
-}
-
-// IsServer reports whether the built-in server is running.
-func (i HugoInfo) IsServer() bool {
-	return i.conf.Running()
-}
-
-// IsExtended reports whether the Hugo binary is the extended version.
-func (i HugoInfo) IsExtended() bool {
-	return IsExtended
-}
-
-// WorkingDir returns the project working directory.
-func (i HugoInfo) WorkingDir() string {
-	return i.conf.WorkingDir()
-}
-
-// Deps gets a list of dependencies for this Hugo build.
-func (i HugoInfo) Deps() []*Dependency {
-	return i.deps
-}
-
-func (i HugoInfo) Store() *hstore.Scratch {
-	return i.store
-}
-
-// Deprecated: Use hugo.IsMultihost instead.
-func (i HugoInfo) IsMultiHost() bool {
-	Deprecate("hugo.IsMultiHost", "Use hugo.IsMultihost instead.", "v0.124.0")
-	return i.conf.IsMultihost()
-}
-
-// IsMultihost reports whether each configured language has a unique baseURL.
-func (i HugoInfo) IsMultihost() bool {
-	return i.conf.IsMultihost()
-}
-
-// IsMultilingual reports whether there are two or more configured languages.
-func (i HugoInfo) IsMultilingual() bool {
-	return i.conf.IsMultilingual()
+// GetBuildInfo returns the build info for the current binary.
+func GetBuildInfo() *BuildInfo {
+	bi := getBuildInfo()
+	if bi == nil {
+		return nil
+	}
+	return &BuildInfo{
+		Revision:     bi.Revision,
+		RevisionTime: bi.RevisionTime,
+		GoVersion:    bi.GoVersion,
+	}
 }

 type contextKey uint8
@@ -149,6 +82,7 @@ const (

 var markupScope = contexthelpers.NewContextDispatcher[string](contextKeyMarkupScope)

+// Context gives access to some of the context scoped variables.
 type Context struct{}

 func (c Context) MarkupScope(ctx context.Context) string {
@@ -165,44 +99,6 @@ func GetMarkupScope(ctx context.Context) string {
 	return markupScope.Get(ctx)
 }

-// ConfigProvider represents the config options that are relevant for HugoInfo.
-type ConfigProvider interface {
-	Environment() string
-	Running() bool
-	WorkingDir() string
-	IsMultihost() bool
-	IsMultilingual() bool
-}
-
-// NewInfo creates a new Hugo Info object.
-func NewInfo(conf ConfigProvider, deps []*Dependency) HugoInfo {
-	if conf.Environment() == "" {
-		panic("environment not set")
-	}
-	var (
-		commitHash string
-		buildDate  string
-		goVersion  string
-	)
-
-	bi := getBuildInfo()
-	if bi != nil {
-		commitHash = bi.Revision
-		buildDate = bi.RevisionTime
-		goVersion = bi.GoVersion
-	}
-
-	return HugoInfo{
-		CommitHash:  commitHash,
-		BuildDate:   buildDate,
-		Environment: conf.Environment(),
-		conf:        conf,
-		deps:        deps,
-		store:       hstore.NewScratch(),
-		GoVersion:   goVersion,
-	}
-}
-
 // GetExecEnviron creates and gets the common os/exec environment used in the
 // external programs we interact with via os/exec, e.g. postcss.
 func GetExecEnviron(workDir string, cfg config.AllProvider, fs afero.Fs) []string {
@@ -310,13 +206,12 @@ func GetDependencyList() []string {

 // GetDependencyListNonGo returns a list of non-Go dependencies.
 func GetDependencyListNonGo() []string {
-	var deps []string
+	deps := []string{formatDep("github.com/webmproject/libwebp", "v1.6.0")} // via WASM. TODO(bep) get versions from the plugin setup.

 	if IsExtended {
 		deps = append(
 			deps,
 			formatDep("github.com/sass/libsass", "3.6.6"),
-			formatDep("github.com/webmproject/libwebp", "v1.3.2"),
 		)
 	}

@@ -439,8 +334,13 @@ func deprecateLevel(item, alternative, version string, level logg.Level) {

 // DeprecateLevel informs about a deprecation logging at the given level.
 func deprecateLevelWithLogger(item, alternative, version string, level logg.Level, log logg.Logger) {
+	//if strings.Contains(item, "module.mounts.lang") || strings.Contains(item, "includeFiles") {
+	// hdebug.Panicf("Deprecated")
+	//}
 	var msg string
 	if level == logg.LevelError {
+		// Useful to debug deprecation errors that needs to be removedor fixed. Comment out when done debugging.
+		// hdebug.Panicf("deprecation error: %s was removed in Hugo %s. %s", item, version, alternative)
 		msg = fmt.Sprintf("%s was deprecated in Hugo %s and subsequently removed. %s", item, version, alternative)
 	} else {
 		msg = fmt.Sprintf("%s was deprecated in Hugo %s and will be removed in a future release. %s", item, version, alternative)
@@ -75,3 +75,39 @@ multihost={{ hugo.IsMultihost }}
 		"multihost=false",
 	)
 }
+
+func TestHugoSites(t *testing.T) {
+	t.Parallel()
+
+	files := `
+-- hugo.toml --
+disableKinds = ['page','rss','section','sitemap','taxonomy','term']
+defaultContentLanguage = 'fr'
+defaultContentLanguageInSubdir = true
+defaultContentVersionInSubdir = true
+defaultContentRoleInSubdir = true
+[languages]
+[languages.en]
+weight = 1
+[languages.fr]
+weight = 2
+[languages.de]
+weight = 3
+[roles]
+[roles.guest]
+weight = 1
+[roles.member]
+weight = 2
+[versions]
+[versions.'v1.0.0']
+weight = 1
+[versions.'v2.0.0']
+weight = 2
+-- layouts/home.html --
+{{ range hugo.Sites }}{{ .Language.Name }}-{{ .Role.Name }}-{{ .Version.Name }}|{{ end }}
+  `
+
+	b := hugolib.Test(t, files)
+
+	b.AssertFileContent("public/guest/v1.0.0/en/index.html", "en-guest-v1.0.0|en-member-v1.0.0|en-guest-v2.0.0|en-member-v2.0.0|fr-guest-v1.0.0|fr-member-v1.0.0|fr-guest-v2.0.0|fr-member-v2.0.0|de-guest-v1.0.0|de-member-v1.0.0|de-guest-v2.0.0|de-member-v2.0.0|")
+}
@@ -15,43 +15,12 @@ package hugo

 import (
 	"context"
-	"fmt"
 	"testing"

 	"github.com/bep/logg"
 	qt "github.com/frankban/quicktest"
-	"github.com/gohugoio/hugo/common/version"
 )

-func TestHugoInfo(t *testing.T) {
-	c := qt.New(t)
-
-	conf := testConfig{environment: "production", workingDir: "/mywork", running: false}
-	hugoInfo := NewInfo(conf, nil)
-
-	c.Assert(hugoInfo.Version(), qt.Equals, CurrentVersion.Version())
-	c.Assert(fmt.Sprintf("%T", version.VersionString("")), qt.Equals, fmt.Sprintf("%T", hugoInfo.Version()))
-	c.Assert(hugoInfo.WorkingDir(), qt.Equals, "/mywork")
-
-	bi := getBuildInfo()
-	if bi != nil {
-		c.Assert(hugoInfo.CommitHash, qt.Equals, bi.Revision)
-		c.Assert(hugoInfo.BuildDate, qt.Equals, bi.RevisionTime)
-		c.Assert(hugoInfo.GoVersion, qt.Equals, bi.GoVersion)
-	}
-	c.Assert(hugoInfo.Environment, qt.Equals, "production")
-	c.Assert(string(hugoInfo.Generator()), qt.Contains, fmt.Sprintf("Hugo %s", hugoInfo.Version()))
-	c.Assert(hugoInfo.IsDevelopment(), qt.Equals, false)
-	c.Assert(hugoInfo.IsProduction(), qt.Equals, true)
-	c.Assert(hugoInfo.IsExtended(), qt.Equals, IsExtended)
-	c.Assert(hugoInfo.IsServer(), qt.Equals, false)
-
-	devHugoInfo := NewInfo(testConfig{environment: "development", running: true}, nil)
-	c.Assert(devHugoInfo.IsDevelopment(), qt.Equals, true)
-	c.Assert(devHugoInfo.IsProduction(), qt.Equals, false)
-	c.Assert(devHugoInfo.IsServer(), qt.Equals, true)
-}
-
 func TestDeprecationLogLevelFromVersion(t *testing.T) {
 	c := qt.New(t)

@@ -66,47 +35,27 @@ func TestDeprecationLogLevelFromVersion(t *testing.T) {
 	c.Assert(deprecationLogLevelFromVersion(ver.String()), qt.Equals, logg.LevelError)

 	// Added just to find the threshold for where we can remove deprecated items.
-	// Subtract 5 from the minor version of the first ERRORed version => 0.122.0.
-	c.Assert(deprecationLogLevelFromVersion("0.127.0"), qt.Equals, logg.LevelError)
+	// Subtract 5 from the minor version of the first ERRORed version => 0.136.0.
+	c.Assert(deprecationLogLevelFromVersion("0.141.0"), qt.Equals, logg.LevelError)
 }

 func TestMarkupScope(t *testing.T) {
 	c := qt.New(t)

-	conf := testConfig{environment: "production", workingDir: "/mywork", running: false}
-	info := NewInfo(conf, nil)
-
 	ctx := context.Background()
-
 	ctx = SetMarkupScope(ctx, "foo")

-	c.Assert(info.Context.MarkupScope(ctx), qt.Equals, "foo")
+	var hugoCtx Context
+	c.Assert(hugoCtx.MarkupScope(ctx), qt.Equals, "foo")
+	c.Assert(GetMarkupScope(ctx), qt.Equals, "foo")
 }

-type testConfig struct {
-	environment  string
-	running      bool
-	workingDir   string
-	multihost    bool
-	multilingual bool
-}
+func TestGetBuildInfo(t *testing.T) {
+	c := qt.New(t)

-func (c testConfig) Environment() string {
-	return c.environment
-}
-
-func (c testConfig) Running() bool {
-	return c.running
-}
-
-func (c testConfig) WorkingDir() string {
-	return c.workingDir
-}
-
-func (c testConfig) IsMultihost() bool {
-	return c.multihost
-}
-
-func (c testConfig) IsMultilingual() bool {
-	return c.multilingual
+	bi := GetBuildInfo()
+	// In test mode, build info may or may not be available.
+	if bi != nil {
+		c.Assert(bi.GoVersion, qt.Not(qt.Equals), "")
+	}
 }
@@ -19,7 +19,7 @@ import "github.com/gohugoio/hugo/common/version"
 // This should be the only one.
 var CurrentVersion = version.Version{
 	Major:      0,
-	Minor:      153,
+	Minor:      159,
 	PatchLevel: 0,
-	Suffix:     "-DEV",
+	Suffix:     "",
 }
@@ -20,6 +20,7 @@ import (
 	"io"
 	"os"
 	"strings"
+	"sync"
 	"time"

 	"github.com/bep/logg"
@@ -123,8 +124,11 @@ func New(opts Options) Logger {
 	)

 	l := logger.WithLevel(opts.Level)
+	logMu := &sync.Mutex{}

 	reset := func() {
+		logMu.Lock()
+		defer logMu.Unlock()
 		logCounters.mu.Lock()
 		defer logCounters.mu.Unlock()
 		logCounters.counters = make(map[logg.Level]int)
@@ -135,6 +139,7 @@ func New(opts Options) Logger {
 	}

 	return &logAdapter{
+		mu:          logMu,
 		logCounters: logCounters,
 		errors:      errorsw,
 		reset:       reset,
@@ -173,6 +178,7 @@ func LevelLoggerToWriter(l logg.LevelLogger) io.Writer {

 type Logger interface {
 	Debug() logg.LevelLogger
+	DebugCommand(command string) logg.LevelLogger
 	Debugf(format string, v ...any)
 	Debugln(v ...any)
 	Error() logg.LevelLogger
@@ -203,6 +209,7 @@ type Logger interface {
 }

 type logAdapter struct {
+	mu          *sync.Mutex
 	logCounters *logLevelCounter
 	errors      *strings.Builder
 	reset       func()
@@ -221,6 +228,10 @@ func (l *logAdapter) Debug() logg.LevelLogger {
 	return l.debugl
 }

+func (l *logAdapter) DebugCommand(command string) logg.LevelLogger {
+	return l.debugl.WithField(FieldNameCmd, command)
+}
+
 func (l *logAdapter) Debugf(format string, v ...any) {
 	l.debugl.Logf(format, v...)
 }
@@ -275,7 +286,7 @@ func (l *logAdapter) PrintTimerIfDelayed(start time.Time, name string) {
 	if milli < 500 {
 		return
 	}
-	fmt.Fprintf(l.stdErr, "%s in %v ms", name, milli)
+	fmt.Fprintf(l.stdErr, "%s in %v ms\n", name, milli)
 }

 func (l *logAdapter) Printf(format string, v ...any) {
@@ -323,6 +334,8 @@ func (l *logAdapter) Errorln(v ...any) {
 }

 func (l *logAdapter) Errors() string {
+	l.mu.Lock()
+	defer l.mu.Unlock()
 	return l.errors.String()
 }

@@ -339,7 +352,7 @@ func (l *logAdapter) Warnidf(id, format string, v ...any) {
 }

 func (l *logAdapter) idfInfoStatement(what, id, format string) string {
-	return fmt.Sprintf("\nYou can suppress this %s by adding the following to your site configuration:\nignoreLogs = ['%s']", what, id)
+	return fmt.Sprintf("\nYou can suppress this %s by adding the following to your project configuration:\nignoreLogs = ['%s']", what, id)
 }

 func (l *logAdapter) Trace(s logg.StringFunc) {
@@ -21,7 +21,7 @@ import (
 	"strings"
 	"sync"

-	"github.com/gohugoio/hugo/common/maps"
+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/gohugoio/hugo/common/types"
 	"github.com/gohugoio/hugo/hugofs/files"
 	"github.com/gohugoio/hugo/hugolib/sitesmatrix"
@@ -30,10 +30,18 @@ import (
 )

 const (
-	identifierBaseof         = "baseof"
-	identifierCurstomWrapper = "_"
+	identifierBaseof        = "baseof"
+	identifierCustomWrapper = "_"
 )

+// isCustomWrapperIdentifier tells whether a supplied path is of the form _xyz_.
+// must have non-empty content between the identifierCustomWrapper's to pass.
+func isCustomWrapperIdentifier(s string) bool {
+	return len(s) > 2*len(identifierCustomWrapper) &&
+		strings.HasPrefix(s, identifierCustomWrapper) &&
+		strings.HasSuffix(s, identifierCustomWrapper)
+}
+
 // PathParser parses and manages paths.
 type PathParser struct {
 	// Maps the language code to its index in the languages/sites slice.
@@ -54,12 +62,12 @@ type PathParser struct {

 	// Below gets created on demand.
 	initOnce         sync.Once
-	sitesMatrixCache *maps.Cache[string, sitesmatrix.VectorStore] // Maps language index to sites matrix vector store.
+	sitesMatrixCache *hmaps.Cache[string, sitesmatrix.VectorStore] // Maps language index to sites matrix vector store.
 }

 func (pp *PathParser) init() {
 	pp.initOnce.Do(func() {
-		pp.sitesMatrixCache = maps.NewCache[string, sitesmatrix.VectorStore]()
+		pp.sitesMatrixCache = hmaps.NewCache[string, sitesmatrix.VectorStore]()
 	})
 }

@@ -188,7 +196,7 @@ func (pp *PathParser) parseIdentifier(component, s string, p *Path, i, lastDot,
 	id := types.LowHigh[string]{Low: i + 1, High: high}
 	sid := p.s[id.Low:id.High]

-	if strings.HasPrefix(sid, identifierCurstomWrapper) && strings.HasSuffix(sid, identifierCurstomWrapper) {
+	if isCustomWrapperIdentifier(sid) {
 		p.identifiersKnown = append(p.identifiersKnown, id)
 		p.posIdentifierCustom = len(p.identifiersKnown) - 1
 		found = true
@@ -775,7 +783,7 @@ func (p *Path) Lang() string {
 }

 func (p *Path) Custom() string {
-	return strings.TrimSuffix(strings.TrimPrefix(p.identifierAsString(p.posIdentifierCustom), identifierCurstomWrapper), identifierCurstomWrapper)
+	return strings.TrimSuffix(strings.TrimPrefix(p.identifierAsString(p.posIdentifierCustom), identifierCustomWrapper), identifierCustomWrapper)
 }

 func (p *Path) Identifier(i int) string {
@@ -153,6 +153,35 @@ func (p PR[T]) FilterCopy(s []T) []T {
 	return result
 }

+const (
+	rangeOpNone = iota
+	rangeOpLT
+	rangeOpLTE
+	rangeOpGT
+	rangeOpGTE
+	rangeOpEQ
+	rangeOpNE
+)
+
+func cutRangeOp(s string) (op int, rest string) {
+	switch {
+	case strings.HasPrefix(s, ">= "):
+		return rangeOpGTE, s[3:]
+	case strings.HasPrefix(s, "<= "):
+		return rangeOpLTE, s[3:]
+	case strings.HasPrefix(s, "== "):
+		return rangeOpEQ, s[3:]
+	case strings.HasPrefix(s, "!= "):
+		return rangeOpNE, s[3:]
+	case strings.HasPrefix(s, "> "):
+		return rangeOpGT, s[2:]
+	case strings.HasPrefix(s, "< "):
+		return rangeOpLT, s[2:]
+	default:
+		return rangeOpNone, s
+	}
+}
+
 // NewStringPredicateFromGlobs creates a string predicate from the given glob patterns.
 // A glob pattern starting with "!" is a negation pattern which will be ANDed with the rest.
 func NewStringPredicateFromGlobs(patterns []string, getGlob func(pattern string) (glob.Glob, error)) (P[string], error) {
@@ -187,6 +216,86 @@ func NewStringPredicateFromGlobs(patterns []string, getGlob func(pattern string)
 	return p.BoolFunc(), nil
 }

-type IndexMatcher interface {
-	IndexMatch(match P[string]) (iter.Seq[int], error)
+// NewIndexStringPredicateFromGlobsAndRanges creates an IndexString predicate from the given glob patterns and range patterns.
+// A glob pattern starting with "!" is a negation pattern which will be ANDed with the rest.
+// A range pattern is one of "> value", ">= value", "< value" or "<= value".
+func NewIndexStringPredicateFromGlobsAndRanges(patterns []string, getIndex func(s string) int, getGlob func(pattern string) (glob.Glob, error)) (P[IndexString], error) {
+	var p PR[IndexString]
+	for _, pattern := range patterns {
+		pattern = strings.TrimSpace(pattern)
+		if pattern == "" {
+			continue
+		}
+		negate := strings.HasPrefix(pattern, hglob.NegationPrefix)
+		if negate {
+			pattern = pattern[2:]
+			g, err := getGlob(pattern)
+			if err != nil {
+				return nil, err
+			}
+			p = p.And(func(s IndexString) Match {
+				return BoolMatch(!g.Match(s.String))
+			})
+		} else {
+			// This can be either a glob or a value prefixed with one of >, >=, < or <=.
+			o, v := cutRangeOp(pattern)
+			if o != rangeOpNone {
+				i := getIndex(v)
+				if i == -1 {
+					// No match possible.
+					p = p.And(func(s IndexString) Match {
+						return BoolMatch(false)
+					})
+					continue
+				}
+				switch o {
+				// The greater values starts at the top with index 0.
+				case rangeOpGT:
+					p = p.And(func(s IndexString) Match {
+						return BoolMatch(s.Index < i)
+					})
+				case rangeOpGTE:
+					p = p.And(func(s IndexString) Match {
+						return BoolMatch(s.Index <= i)
+					})
+				case rangeOpLT:
+					p = p.And(func(s IndexString) Match {
+						return BoolMatch(s.Index > i)
+					})
+				case rangeOpLTE:
+					p = p.And(func(s IndexString) Match {
+						return BoolMatch(s.Index >= i)
+					})
+				case rangeOpEQ:
+					p = p.And(func(s IndexString) Match {
+						return BoolMatch(s.Index == i)
+					})
+				case rangeOpNE:
+					p = p.And(func(s IndexString) Match {
+						return BoolMatch(s.Index != i)
+					})
+				}
+			} else {
+				g, err := getGlob(pattern)
+				if err != nil {
+					return nil, err
+				}
+				p = p.Or(func(s IndexString) Match {
+					return BoolMatch(g.Match(s.String))
+				})
+			}
+
+		}
+	}
+
+	return p.BoolFunc(), nil
+}
+
+type IndexString struct {
+	Index  int
+	String string
+}
+
+type IndexMatcher interface {
+	IndexMatch(match P[IndexString]) (iter.Seq[int], error)
 }
@@ -146,6 +146,107 @@ func TestNewStringPredicateFromGlobs(t *testing.T) {
 	c.Assert(m("anything"), qt.IsFalse)
 }

+func TestNewIndexStringPredicateFromGlobsAndRanges(t *testing.T) {
+	c := qt.New(t)
+
+	// Simulate versions: v4.0.0=0, v3.0.0=1, v2.0.0=2, v1.0.0=3
+	// Lower index = greater value.
+	versions := []string{"v4.0.0", "v3.0.0", "v2.0.0", "v1.0.0"}
+	getIndex := func(s string) int {
+		for i, v := range versions {
+			if v == s {
+				return i
+			}
+		}
+		return -1
+	}
+	getGlob := func(pattern string) (glob.Glob, error) {
+		return glob.Compile(pattern)
+	}
+
+	n := func(patterns ...string) predicate.P[predicate.IndexString] {
+		p, err := predicate.NewIndexStringPredicateFromGlobsAndRanges(patterns, getIndex, getGlob)
+		c.Assert(err, qt.IsNil)
+		return p
+	}
+
+	is := func(i int) predicate.IndexString {
+		return predicate.IndexString{Index: i, String: versions[i]}
+	}
+
+	// Test >= v2.0.0 (index 2): should match indices <= 2
+	m := n(">= v2.0.0")
+	c.Assert(m(is(0)), qt.IsTrue)  // v4.0.0
+	c.Assert(m(is(1)), qt.IsTrue)  // v3.0.0
+	c.Assert(m(is(2)), qt.IsTrue)  // v2.0.0
+	c.Assert(m(is(3)), qt.IsFalse) // v1.0.0
+
+	// Test > v2.0.0 (index 2): should match indices < 2
+	m = n("> v2.0.0")
+	c.Assert(m(is(0)), qt.IsTrue)  // v4.0.0
+	c.Assert(m(is(1)), qt.IsTrue)  // v3.0.0
+	c.Assert(m(is(2)), qt.IsFalse) // v2.0.0
+	c.Assert(m(is(3)), qt.IsFalse) // v1.0.0
+
+	// Test < v3.0.0 (index 1): should match indices > 1
+	m = n("< v3.0.0")
+	c.Assert(m(is(0)), qt.IsFalse) // v4.0.0
+	c.Assert(m(is(1)), qt.IsFalse) // v3.0.0
+	c.Assert(m(is(2)), qt.IsTrue)  // v2.0.0
+	c.Assert(m(is(3)), qt.IsTrue)  // v1.0.0
+
+	// Test range: >= v2.0.0 AND <= v3.0.0
+	m = n(">= v2.0.0", "<= v3.0.0")
+	c.Assert(m(is(0)), qt.IsFalse) // v4.0.0 - too high
+	c.Assert(m(is(1)), qt.IsTrue)  // v3.0.0
+	c.Assert(m(is(2)), qt.IsTrue)  // v2.0.0
+	c.Assert(m(is(3)), qt.IsFalse) // v1.0.0 - too low
+
+	// Test glob pattern
+	m = n("v2.*.*")
+	c.Assert(m(is(0)), qt.IsFalse) // v4.0.0
+	c.Assert(m(is(2)), qt.IsTrue)  // v2.0.0
+
+	// Test glob with negation
+	m = n("v*.*.*", "! v3.*.*")
+	c.Assert(m(is(0)), qt.IsTrue)  // v4.0.0
+	c.Assert(m(is(1)), qt.IsFalse) // v3.0.0 - negated
+	c.Assert(m(is(2)), qt.IsTrue)  // v2.0.0
+
+	// Test range with negation: >= v2.0.0 but not v3.0.0
+	m = n(">= v2.0.0", "! v3.0.0")
+	c.Assert(m(is(0)), qt.IsTrue)  // v4.0.0
+	c.Assert(m(is(1)), qt.IsFalse) // v3.0.0 - negated
+	c.Assert(m(is(2)), qt.IsTrue)  // v2.0.0
+	c.Assert(m(is(3)), qt.IsFalse) // v1.0.0 - out of range
+
+	// Test unknown value in range returns no match
+	m = n(">= v99.0.0")
+	c.Assert(m(is(0)), qt.IsFalse)
+	c.Assert(m(is(3)), qt.IsFalse)
+
+	// Test == v2.0.0: should only match v2.0.0
+	m = n("== v2.0.0")
+	c.Assert(m(is(0)), qt.IsFalse) // v4.0.0
+	c.Assert(m(is(1)), qt.IsFalse) // v3.0.0
+	c.Assert(m(is(2)), qt.IsTrue)  // v2.0.0
+	c.Assert(m(is(3)), qt.IsFalse) // v1.0.0
+
+	// Test != v2.0.0: should match everything except v2.0.0
+	m = n("!= v2.0.0")
+	c.Assert(m(is(0)), qt.IsTrue)  // v4.0.0
+	c.Assert(m(is(1)), qt.IsTrue)  // v3.0.0
+	c.Assert(m(is(2)), qt.IsFalse) // v2.0.0
+	c.Assert(m(is(3)), qt.IsTrue)  // v1.0.0
+
+	// Test != with range: >= v2.0.0 AND != v3.0.0
+	m = n(">= v2.0.0", "!= v3.0.0")
+	c.Assert(m(is(0)), qt.IsTrue)  // v4.0.0
+	c.Assert(m(is(1)), qt.IsFalse) // v3.0.0 - excluded by !=
+	c.Assert(m(is(2)), qt.IsTrue)  // v2.0.0
+	c.Assert(m(is(3)), qt.IsFalse) // v1.0.0 - out of range
+}
+
 func BenchmarkPredicate(b *testing.B) {
 	b.Run("and or no match", func(b *testing.B) {
 		var p predicate.PR[int] = intP1
@@ -0,0 +1,52 @@
+// Copyright 2026 The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package predicate
+
+import (
+	"testing"
+
+	qt "github.com/frankban/quicktest"
+)
+
+func TestCutRangeOp(t *testing.T) {
+	c := qt.New(t)
+
+	op, rest := cutRangeOp(">= value")
+	c.Assert(op, qt.Equals, rangeOpGTE)
+	c.Assert(rest, qt.Equals, "value")
+
+	op, rest = cutRangeOp("<= value")
+	c.Assert(op, qt.Equals, rangeOpLTE)
+	c.Assert(rest, qt.Equals, "value")
+
+	op, rest = cutRangeOp("> value")
+	c.Assert(op, qt.Equals, rangeOpGT)
+	c.Assert(rest, qt.Equals, "value")
+
+	op, rest = cutRangeOp("< value")
+	c.Assert(op, qt.Equals, rangeOpLT)
+	c.Assert(rest, qt.Equals, "value")
+
+	op, rest = cutRangeOp("== value")
+	c.Assert(op, qt.Equals, rangeOpEQ)
+	c.Assert(rest, qt.Equals, "value")
+
+	op, rest = cutRangeOp("!= value")
+	c.Assert(op, qt.Equals, rangeOpNE)
+	c.Assert(rest, qt.Equals, "value")
+
+	op, rest = cutRangeOp("value")
+	c.Assert(op, qt.Equals, rangeOpNone)
+	c.Assert(rest, qt.Equals, "value")
+}
@@ -56,9 +56,7 @@ func TestEvictingStringQueueConcurrent(t *testing.T) {
 	queue := NewEvictingQueue[string](3)

 	for range 100 {
-		wg.Add(1)
-		go func() {
-			defer wg.Done()
+		wg.Go(func() {
 			queue.Add(val)
 			v := queue.Peek()
 			if v != val {
@@ -68,7 +66,7 @@ func TestEvictingStringQueueConcurrent(t *testing.T) {
 			if len(vals) != 1 || vals[0] != val {
 				t.Error("wrong val")
 			}
-		}()
+		})
 	}
 	wg.Wait()
 }
@@ -89,7 +89,7 @@ func IsNil(v any) bool {

 	value := reflect.ValueOf(v)
 	switch value.Kind() {
-	case reflect.Chan, reflect.Func, reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice:
+	case reflect.Chan, reflect.Func, reflect.Interface, reflect.Map, reflect.Pointer, reflect.Slice:
 		return value.IsNil()
 	}

@@ -37,6 +37,9 @@ type Version struct {
 	// HugoVersionSuffix is the suffix used in the Hugo version string.
 	// It will be blank for release versions.
 	Suffix string
+
+	// Set when parsed from a string,
+	source string
 }

 var (
@@ -51,6 +54,10 @@ func (v Version) IsAlphaBetaOrRC() bool {
 	return strings.Contains(s, "alpha.") || strings.Contains(s, "beta.") || strings.Contains(s, "rc.")
 }

+func (v Version) IsZero() bool {
+	return v.Major == 0 && v.Minor == 0 && v.PatchLevel == 0 && v.Suffix == ""
+}
+
 func (v Version) String() string {
 	return version(v.Major, v.Minor, v.PatchLevel, v.Suffix)
 }
@@ -109,6 +116,7 @@ func ParseVersion(s string) (Version, error) {
 		vv.Suffix = suffix
 	}
 	vv.Major, vv.Minor, vv.PatchLevel = parseVersion(s)
+	vv.source = s

 	return vv, nil
 }
@@ -176,6 +184,10 @@ func CompareVersions(v1 Version, v2 any) int {
 	case int64:
 		c = compareFloatWithVersion(float64(d), v1)
 	case Version:
+		if v1.IsZero() && d.IsZero() {
+			// Fall back to source comparison.
+			return strings.Compare(v1.source, d.source)
+		}
 		if d.Major == v1.Major && d.Minor == v1.Minor && d.PatchLevel == v1.PatchLevel {
 			return strings.Compare(v1.Suffix, d.Suffix)
 		}
@@ -200,11 +212,13 @@ func CompareVersions(v1 Version, v2 any) int {
 			return -1
 		}

-		v, err := ParseVersion(s)
-		if err != nil {
-			return -1
+		v2v, _ := ParseVersion(s)
+		if v1.IsZero() && v2v.IsZero() {
+			// Fall back to source comparison.
+			return strings.Compare(v1.source, v2v.source)
 		}
-		return v1.Compare(v)
+
+		return v1.Compare(v2v)

 	}

@@ -50,6 +50,11 @@ func TestHugoVersion(t *testing.T) {
 func TestCompareVersions(t *testing.T) {
 	c := qt.New(t)

+	parseIgnoreErr := func(s string) Version {
+		v, _ := ParseVersion(s)
+		return v
+	}
+
 	c.Assert(CompareVersions(MustParseVersion("0.20.0"), 0.20), qt.Equals, 0)
 	c.Assert(CompareVersions(MustParseVersion("0.20.0"), float32(0.20)), qt.Equals, 0)
 	c.Assert(CompareVersions(MustParseVersion("0.20.0"), float64(0.20)), qt.Equals, 0)
@@ -69,6 +74,15 @@ func TestCompareVersions(t *testing.T) {
 	c.Assert(CompareVersions(MustParseVersion("0.22.0-DEV"), "0.22"), qt.Equals, 1)
 	c.Assert(CompareVersions(MustParseVersion("0.22.1-DEV"), "0.22"), qt.Equals, -1)
 	c.Assert(CompareVersions(MustParseVersion("0.22.1-DEV"), "0.22.1-DEV"), qt.Equals, 0)
+
+	c.Assert(CompareVersions(parseIgnoreErr("foobar"), "v1.0.0"), qt.Equals, 1)
+	c.Assert(CompareVersions(parseIgnoreErr("v1.0.0"), "foobar"), qt.Equals, -1)
+	c.Assert(CompareVersions(parseIgnoreErr("foobar"), "foobar"), qt.Equals, 0)
+	c.Assert(CompareVersions(parseIgnoreErr("foobar"), parseIgnoreErr("foobar")), qt.Equals, 0)
+	c.Assert(CompareVersions(parseIgnoreErr("a"), "b"), qt.Equals, -1)
+	c.Assert(CompareVersions(parseIgnoreErr("a"), parseIgnoreErr("b")), qt.Equals, -1)
+	c.Assert(CompareVersions(parseIgnoreErr("b"), "a"), qt.Equals, 1)
+	c.Assert(CompareVersions(parseIgnoreErr("b"), parseIgnoreErr("a")), qt.Equals, 1)
 }

 func TestParseHugoVersion(t *testing.T) {
@@ -29,10 +29,10 @@ import (

 	"github.com/gohugoio/hugo/cache/filecache"
 	"github.com/gohugoio/hugo/cache/httpcache"
+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/gohugoio/hugo/common/hstrings"
 	"github.com/gohugoio/hugo/common/hugo"
 	"github.com/gohugoio/hugo/common/loggers"
-	"github.com/gohugoio/hugo/common/maps"
 	"github.com/gohugoio/hugo/common/paths"
 	"github.com/gohugoio/hugo/common/urls"
 	"github.com/gohugoio/hugo/config"
@@ -212,7 +212,7 @@ type Config struct {

 	// User provided parameters.
 	// <docsmeta>{"refs": ["config:languages:params"] }</docsmeta>
-	Params maps.Params `mapstructure:"-"`
+	Params hmaps.Params `mapstructure:"-"`

 	// UglyURLs configuration. Either a boolean or a sections map.
 	UglyURLs any `mapstructure:"-"`
@@ -399,33 +399,82 @@ func (c *Config) CompileConfig(logger loggers.Logger) error {
 		return err
 	}

-	// Legacy paginate values.
-	if c.Paginate != 0 {
-		hugo.DeprecateWithLogger("site config key paginate", "Use pagination.pagerSize instead.", "v0.128.0", logger.Logger())
-		c.Pagination.PagerSize = c.Paginate
+	// Legacy language values.
+	if c.LanguageCode != "" {
+		if !c.isLanguageClone {
+			hugo.DeprecateWithLogger("project config key languageCode", "Use locale instead.", "v0.158.0", logger.Logger())
+		}
+		if c.Locale == "" {
+			c.Locale = c.LanguageCode
+		}
+		c.LanguageCode = ""
 	}
-	if c.PaginatePath != "" {
-		hugo.DeprecateWithLogger("site config key paginatePath", "Use pagination.path instead.", "v0.128.0", logger.Logger())
-		c.Pagination.Path = c.PaginatePath
+	for k, v := range c.Languages.Config.LanguageConfigs {
+		//lint:ignore SA1019 Keep as adapter for now.
+		if v.LanguageCode != "" {
+			if !c.isLanguageClone {
+				hugo.DeprecateWithLogger(fmt.Sprintf("project config key languages.%s.languageCode", k), fmt.Sprintf("Use languages.%s.locale instead.", k), "v0.158.0", logger.Logger())
+			}
+			if v.Locale == "" {
+				//lint:ignore SA1019 Keep as adapter for now.
+				v.Locale = v.LanguageCode
+			}
+			//lint:ignore SA1019 Keep as adapter for now.
+			v.LanguageCode = ""
+		}
+		//lint:ignore SA1019 Keep as adapter for now.
+		if v.LanguageName != "" {
+			if !c.isLanguageClone {
+				hugo.DeprecateWithLogger(fmt.Sprintf("project config key languages.%s.languageName", k), fmt.Sprintf("Use languages.%s.label instead.", k), "v0.158.0", logger.Logger())
+			}
+			if v.Label == "" {
+				//lint:ignore SA1019 Keep as adapter for now.
+				v.Label = v.LanguageName
+			}
+			//lint:ignore SA1019 Keep as adapter for now.
+			v.LanguageName = ""
+		}
+		//lint:ignore SA1019 Keep as adapter for now.
+		if v.LanguageDirection != "" {
+			if !c.isLanguageClone {
+				hugo.DeprecateWithLogger(fmt.Sprintf("project config key languages.%s.languageDirection", k), fmt.Sprintf("Use languages.%s.direction instead.", k), "v0.158.0", logger.Logger())
+			}
+			if v.Direction == "" {
+				//lint:ignore SA1019 Keep as adapter for now.
+				v.Direction = v.LanguageDirection
+			}
+			//lint:ignore SA1019 Keep as adapter for now.
+			v.LanguageDirection = ""
+		}
+
+		c.Languages.Config.LanguageConfigs[k] = v
+		// Sorted is a snapshot of LanguageConfigs taken at decode time; keep it
+		// in sync so Configs.Init, which reads from Sorted, sees the migrated values.
+		for i, s := range c.Languages.Config.Sorted {
+			if s.Name == k {
+				c.Languages.Config.Sorted[i].LanguageConfig = v
+				break
+			}
+		}
 	}

 	// Legacy privacy values.
 	if c.Privacy.Twitter.Disable {
-		hugo.DeprecateWithLogger("site config key privacy.twitter.disable", "Use privacy.x.disable instead.", "v0.141.0", logger.Logger())
+		hugo.DeprecateWithLogger("project config key privacy.twitter.disable", "Use privacy.x.disable instead.", "v0.141.0", logger.Logger())
 		c.Privacy.X.Disable = c.Privacy.Twitter.Disable
 	}
 	if c.Privacy.Twitter.EnableDNT {
-		hugo.DeprecateWithLogger("site config key privacy.twitter.enableDNT", "Use privacy.x.enableDNT instead.", "v0.141.0", logger.Logger())
+		hugo.DeprecateWithLogger("project config key privacy.twitter.enableDNT", "Use privacy.x.enableDNT instead.", "v0.141.0", logger.Logger())
 		c.Privacy.X.EnableDNT = c.Privacy.Twitter.EnableDNT
 	}
 	if c.Privacy.Twitter.Simple {
-		hugo.DeprecateWithLogger("site config key privacy.twitter.simple", "Use privacy.x.simple instead.", "v0.141.0", logger.Logger())
+		hugo.DeprecateWithLogger("project config key privacy.twitter.simple", "Use privacy.x.simple instead.", "v0.141.0", logger.Logger())
 		c.Privacy.X.Simple = c.Privacy.Twitter.Simple
 	}

 	// Legacy services values.
 	if c.Services.Twitter.DisableInlineCSS {
-		hugo.DeprecateWithLogger("site config key services.twitter.disableInlineCSS", "Use services.x.disableInlineCSS instead.", "v0.141.0", logger.Logger())
+		hugo.DeprecateWithLogger("project config key services.twitter.disableInlineCSS", "Use services.x.disableInlineCSS instead.", "v0.141.0", logger.Logger())
 		c.Services.X.DisableInlineCSS = c.Services.Twitter.DisableInlineCSS
 	}

@@ -446,7 +495,7 @@ func (c *Config) CompileConfig(logger loggers.Logger) error {
 	)
 	if c.Markup.Goldmark.RenderHooks.Image.EnableDefault != nil {
 		alternative := "Use markup.goldmark.renderHooks.image.useEmbedded instead." + " " + alternativeDetails
-		hugo.DeprecateWithLogger("site config key markup.goldmark.renderHooks.image.enableDefault", alternative, "0.148.0", logger.Logger())
+		hugo.DeprecateWithLogger("project config key markup.goldmark.renderHooks.image.enableDefault", alternative, "0.148.0", logger.Logger())
 		if *c.Markup.Goldmark.RenderHooks.Image.EnableDefault {
 			c.Markup.Goldmark.RenderHooks.Image.UseEmbedded = gc.RenderHookUseEmbeddedFallback
 		} else {
@@ -455,7 +504,7 @@ func (c *Config) CompileConfig(logger loggers.Logger) error {
 	}
 	if c.Markup.Goldmark.RenderHooks.Link.EnableDefault != nil {
 		alternative := "Use markup.goldmark.renderHooks.link.useEmbedded instead." + " " + alternativeDetails
-		hugo.DeprecateWithLogger("site config key markup.goldmark.renderHooks.link.enableDefault", alternative, "0.148.0", logger.Logger())
+		hugo.DeprecateWithLogger("project config key markup.goldmark.renderHooks.link.enableDefault", alternative, "0.148.0", logger.Logger())
 		if *c.Markup.Goldmark.RenderHooks.Link.EnableDefault {
 			c.Markup.Goldmark.RenderHooks.Link.UseEmbedded = gc.RenderHookUseEmbeddedFallback
 		} else {
@@ -471,10 +520,10 @@ func (c *Config) CompileConfig(logger loggers.Logger) error {
 		gc.RenderHookUseEmbeddedNever,
 	}
 	if !slices.Contains(renderHookUseEmbeddedModes, c.Markup.Goldmark.RenderHooks.Image.UseEmbedded) {
-		return fmt.Errorf("site config markup.goldmark.renderHooks.image must be one of %s", helpers.StringSliceToList(renderHookUseEmbeddedModes, "or"))
+		return fmt.Errorf("project config markup.goldmark.renderHooks.image.useEmbedded must be one of %s", helpers.StringSliceToList(renderHookUseEmbeddedModes, "or"))
 	}
 	if !slices.Contains(renderHookUseEmbeddedModes, c.Markup.Goldmark.RenderHooks.Link.UseEmbedded) {
-		return fmt.Errorf("site config markup.goldmark.renderHooks.link must be one of %s", helpers.StringSliceToList(renderHookUseEmbeddedModes, "or"))
+		return fmt.Errorf("project config markup.goldmark.renderHooks.link.useEmbedded must be one of %s", helpers.StringSliceToList(renderHookUseEmbeddedModes, "or"))
 	}

 	c.C = &ConfigCompiled{
@@ -607,8 +656,14 @@ type RootConfig struct {
 	DefaultOutputFormat string

 	// Disable generation of redirect to the default language when DefaultContentLanguageInSubdir is enabled.
+	// Note that this currently is an alias for DisableDefaultSiteRedirect introduced in v0.154.5.
+	// It's not obvious how a more fine grained setup would work.
 	DisableDefaultLanguageRedirect bool

+	// Disable generation of redirects to the default site when DefaultContentRoleInSubdir or DefaultContentVersionInSubdir or DefaultContentLanguageInSubdir is enabled.
+	// The default site is the site is the combination of defaultContentLanguage, defaultContentVersion and defaultContentRole.
+	DisableDefaultSiteRedirect bool
+
 	// Disable creation of alias redirect pages.
 	DisableAliases bool

@@ -675,20 +730,15 @@ type RootConfig struct {
 	// The configured environment. Default is "development" for server and "production" for build.
 	Environment string

-	// The default language code.
-	LanguageCode string
+	// Deprecated: Use Locale instead.
+	LanguageCode string `json:"-"`
+
+	// The default locale.
+	Locale string

 	// Enable if the site content has CJK language (Chinese, Japanese, or Korean). This affects how Hugo counts words.
 	HasCJKLanguage bool

-	// The default number of pages per page when paginating.
-	// Deprecated: Use the Pagination struct.
-	Paginate int
-
-	// The path to use when creating pagination URLs, e.g. "page" in /page/2/.
-	// Deprecated: Use the Pagination struct.
-	PaginatePath string
-
 	// Whether to pluralize default list titles.
 	// Note that this currently only works for English, but you can provide your own title in the content file's front matter.
 	PluralizeListTitles bool
@@ -816,6 +866,7 @@ type Configs struct {

 	Modules       modules.Modules
 	ModulesClient *modules.Client
+	FileCaches    filecache.Caches

 	// All below is set in Init.
 	Languages                 langs.Languages
@@ -846,7 +897,7 @@ func (c *Configs) IsZero() bool {
 	return c == nil || len(c.Languages) == 0
 }

-func (c *Configs) Init(logger loggers.Logger) error {
+func (c *Configs) Init(sourceFs afero.Fs, logger loggers.Logger) error {
 	var languages langs.Languages

 	for _, f := range c.Base.Languages.Config.Sorted {
@@ -854,7 +905,7 @@ func (c *Configs) Init(logger loggers.Logger) error {
 		if !found {
 			return fmt.Errorf("invalid language configuration for %q", f.Name)
 		}
-		language, err := langs.NewLanguage(f.Name, c.Base.DefaultContentLanguage, v.TimeZone, f.LanguageConfig)
+		language, err := langs.NewLanguage(f.Name, c.Base.DefaultContentLanguage, v.TimeZone, f.LanguageConfig, logger)
 		if err != nil {
 			return err
 		}
@@ -915,10 +966,9 @@ func (c *Configs) Init(logger loggers.Logger) error {
 	// avoid initializing the same config more than once.
 	for i, l := range c.Languages {
 		langConfig := c.LanguageConfigMap[l.Lang]
-		sitesMatrix := sitesmatrix.NewIntSetsBuilder(c.ConfiguredDimensions).WithLanguageIndices(i).WithAllIfNotSet().Build()
 		for _, s := range allDecoderSetups {
 			if getInitializer := s.getInitializer; getInitializer != nil {
-				if err := getInitializer(langConfig).InitConfig(logger, sitesMatrix, c.ConfiguredDimensions); err != nil {
+				if err := getInitializer(langConfig).InitConfig(logger, nil, c.ConfiguredDimensions); err != nil {
 					return err
 				}
 			}
@@ -1018,7 +1068,7 @@ func fromLoadConfigResult(fs afero.Fs, logger loggers.Logger, res config.LoadCon
 		if lang == "" {
 			lang = "en"
 		}
-		res.Cfg.Set("languages", maps.Params{lang: maps.Params{}})
+		res.Cfg.Set("languages", hmaps.Params{lang: hmaps.Params{}})
 	}
 	bcfg := res.BaseConfig
 	cfg := res.Cfg
@@ -1045,11 +1095,11 @@ func fromLoadConfigResult(fs afero.Fs, logger loggers.Logger, res config.LoadCon
 		var differentRootKeys []string
 		switch x := v.(type) {
 		case nil:
-		case maps.Params:
+		case hmaps.Params:
 			_, found := x["params"]
 			if !found {
-				x["params"] = maps.Params{
-					maps.MergeStrategyKey: maps.ParamsMergeStrategyDeep,
+				x["params"] = hmaps.Params{
+					hmaps.MergeStrategyKey: hmaps.ParamsMergeStrategyDeep,
 				}
 			}
 			for kk, vv := range x {
@@ -1061,16 +1111,16 @@ func fromLoadConfigResult(fs afero.Fs, logger loggers.Logger, res config.LoadCon
 					isMultihost = true
 				}

-				if p, ok := vv.(maps.Params); ok {
+				if p, ok := vv.(hmaps.Params); ok {
 					// With the introduction of YAML anchor and alias support, language config entries
 					// may be contain shared references.
 					// This also break potential cycles.
-					vv = maps.CloneParamsDeep(p)
+					vv = hmaps.CloneParamsDeep(p)
 				}

 				if kk == "cascade" {
 					// If not set, add the current language to make sure it does not get applied to other languages.
-					page.AddLangToCascadeTargetMap(k, vv.(maps.Params))
+					page.AddLangToCascadeTargetMap(k, vv.(hmaps.Params))
 					// Always clone cascade config to get the sites matrix right.
 					differentRootKeys = append(differentRootKeys, kk)
 				}
@@ -1081,14 +1131,14 @@ func fromLoadConfigResult(fs afero.Fs, logger loggers.Logger, res config.LoadCon
 					// This overrides a root key and potentially needs a merge.
 					if !reflect.DeepEqual(rootv, vv) {
 						switch vvv := vv.(type) {
-						case maps.Params:
+						case hmaps.Params:
 							differentRootKeys = append(differentRootKeys, kk)

 							// Use the language value as base.
 							// Note that this is already cloned above.
 							mergedConfigEntry := vvv
 							// Merge in the root value.
-							maps.MergeParams(mergedConfigEntry, rootv.(maps.Params))
+							hmaps.MergeParams(mergedConfigEntry, rootv.(hmaps.Params))

 							mergedConfig.Set(kk, mergedConfigEntry)
 						default:
@@ -1098,7 +1148,7 @@ func fromLoadConfigResult(fs afero.Fs, logger loggers.Logger, res config.LoadCon
 					}
 				} else {
 					switch vv.(type) {
-					case maps.Params:
+					case hmaps.Params:
 						differentRootKeys = append(differentRootKeys, kk)
 					default:
 						// Apply new values to the root.
@@ -1134,7 +1184,7 @@ func fromLoadConfigResult(fs afero.Fs, logger loggers.Logger, res config.LoadCon
 			}

 			langConfigMap[k] = clone
-		case maps.ParamsMergeStrategy:
+		case hmaps.ParamsMergeStrategy:

 		default:
 			panic(fmt.Sprintf("unknown type in languages config: %T", v))
@@ -1149,10 +1199,16 @@ func fromLoadConfigResult(fs afero.Fs, logger loggers.Logger, res config.LoadCon
 		l.CommonDirs.CacheDir = bcfg.CacheDir
 	}

+	caches, err := filecache.NewCaches(all.Caches, fs)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create file caches from configuration: %w", err)
+	}
+
 	cm := &Configs{
 		Base:              all,
 		LanguageConfigMap: langConfigMap,
 		LoadingInfo:       res,
+		FileCaches:        caches,
 		IsMultihost:       isMultihost,
 	}

@@ -22,9 +22,9 @@ import (
 	"github.com/gohugoio/hugo/langs"

 	"github.com/gohugoio/hugo/cache/httpcache"
+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/gohugoio/hugo/common/hstrings"
 	"github.com/gohugoio/hugo/common/loggers"
-	"github.com/gohugoio/hugo/common/maps"
 	"github.com/gohugoio/hugo/common/types"
 	"github.com/gohugoio/hugo/config"
 	"github.com/gohugoio/hugo/config/privacy"
@@ -196,7 +196,7 @@ var allDecoderSetups = map[string]decodeWeight{
 		key: "outputs",
 		decode: func(d decodeWeight, p decodeConfig) error {
 			defaults := createDefaultOutputFormats(p.c.OutputFormats.Config)
-			m := maps.CleanConfigStringMap(p.p.GetStringMap("outputs"))
+			m := hmaps.CleanConfigStringMap(p.p.GetStringMap("outputs"))
 			p.c.Outputs = make(map[string][]string)
 			for k, v := range m {
 				s := types.ToStringSlicePreserveString(v)
@@ -225,28 +225,18 @@ var allDecoderSetups = map[string]decodeWeight{
 	"languages": {
 		key: "languages",
 		decode: func(d decodeWeight, p decodeConfig) error {
-			m := maps.CleanConfigStringMap(p.p.GetStringMap(d.key))
-			if len(m) == 1 {
-				// In v0.112.4 we moved this to the language config, but it's very commmon for mono language sites to have this at the top level.
-				var first maps.Params
-				var ok bool
-				for _, v := range m {
-					first, ok = v.(maps.Params)
-					if ok {
-						break
-					}
-				}
-				if first != nil {
-					if _, found := first["languagecode"]; !found {
-						first["languagecode"] = p.p.GetString("languagecode")
-					}
-				}
-			}
+			m := hmaps.CleanConfigStringMap(p.p.GetStringMap(d.key))
+			// Root-level locale/languageCode is passed to DecodeConfig so it can
+			// be applied to the default content language inside langs.DecodeConfig.
+			// They are passed separately so that an explicit per-lang languageCode
+			// can override a root-level languageCode (but not a root-level locale).
+			rootLocale := p.p.GetString("locale")
+			rootLanguageCode := p.p.GetString("languagecode")
 			var (
 				err                    error
 				defaultContentLanguage string
 			)
-			p.c.Languages, defaultContentLanguage, err = langs.DecodeConfig(p.c.RootConfig.DefaultContentLanguage, p.c.RootConfig.DisableLanguages, m)
+			p.c.Languages, defaultContentLanguage, err = langs.DecodeConfig(p.c.RootConfig.DefaultContentLanguage, rootLocale, rootLanguageCode, p.c.RootConfig.DisableLanguages, m)
 			if err != nil {
 				return fmt.Errorf("failed to decode languages config: %w", err)
 			}
@@ -266,7 +256,7 @@ var allDecoderSetups = map[string]decodeWeight{
 		key: "versions",
 		decode: func(d decodeWeight, p decodeConfig) error {
 			var err error
-			m := maps.CleanConfigStringMap(p.p.GetStringMap(d.key))
+			m := hmaps.CleanConfigStringMap(p.p.GetStringMap(d.key))
 			p.c.Versions, err = versions.DecodeConfig(p.c.RootConfig.DefaultContentVersion, m)
 			return err
 		},
@@ -278,7 +268,7 @@ var allDecoderSetups = map[string]decodeWeight{
 				err                error
 				defaultContentRole string
 			)
-			m := maps.CleanConfigStringMap(p.p.GetStringMap(d.key))
+			m := hmaps.CleanConfigStringMap(p.p.GetStringMap(d.key))
 			p.c.Roles, defaultContentRole, err = roles.DecodeConfig(p.c.RootConfig.DefaultContentRole, m)
 			p.c.RootConfig.DefaultContentRole = defaultContentRole

@@ -289,7 +279,7 @@ var allDecoderSetups = map[string]decodeWeight{
 	"params": {
 		key: "params",
 		decode: func(d decodeWeight, p decodeConfig) error {
-			p.c.Params = maps.CleanConfigStringMap(p.p.GetStringMap("params"))
+			p.c.Params = hmaps.CleanConfigStringMap(p.p.GetStringMap("params"))
 			if p.c.Params == nil {
 				p.c.Params = make(map[string]any)
 			}
@@ -335,7 +325,14 @@ var allDecoderSetups = map[string]decodeWeight{
 		key: "taxonomies",
 		decode: func(d decodeWeight, p decodeConfig) error {
 			if p.p.IsSet(d.key) {
-				p.c.Taxonomies = maps.CleanConfigStringMapString(p.p.GetStringMapString(d.key))
+				m := hmaps.CleanConfigStringMapString(p.p.GetStringMapString(d.key))
+				// Remove invalid entries (e.g. non-taxonomy keys placed inside [taxonomies] in TOML).
+				for k, v := range m {
+					if k == "" || v == "" {
+						delete(m, k)
+					}
+				}
+				p.c.Taxonomies = m
 			}
 			return nil
 		},
@@ -447,7 +444,7 @@ var allDecoderSetups = map[string]decodeWeight{
 	"author": {
 		key: "author",
 		decode: func(d decodeWeight, p decodeConfig) error {
-			p.c.Author = maps.CleanConfigStringMap(p.p.GetStringMap(d.key))
+			p.c.Author = hmaps.CleanConfigStringMap(p.p.GetStringMap(d.key))
 			return nil
 		},
 		internalOrDeprecated: true,
@@ -455,7 +452,7 @@ var allDecoderSetups = map[string]decodeWeight{
 	"social": {
 		key: "social",
 		decode: func(d decodeWeight, p decodeConfig) error {
-			p.c.Social = maps.CleanConfigStringMapString(p.p.GetStringMapString(d.key))
+			p.c.Social = hmaps.CleanConfigStringMapString(p.p.GetStringMapString(d.key))
 			return nil
 		},
 		internalOrDeprecated: true,
@@ -469,8 +466,8 @@ var allDecoderSetups = map[string]decodeWeight{
 				p.c.UglyURLs = vv
 			case string:
 				p.c.UglyURLs = vv == "true"
-			case maps.Params:
-				p.c.UglyURLs = cast.ToStringMapBool(maps.CleanConfigStringMap(vv))
+			case hmaps.Params:
+				p.c.UglyURLs = cast.ToStringMapBool(hmaps.CleanConfigStringMap(vv))
 			default:
 				p.c.UglyURLs = cast.ToStringMapBool(v)
 			}
@@ -25,9 +25,8 @@ import (
 )

 type ConfigLanguage struct {
-	config     *Config
-	baseConfig config.BaseConfig
-
+	config        *Config
+	baseConfig    config.BaseConfig
 	m             *Configs
 	language      *langs.Language
 	languageIndex int
@@ -123,6 +122,10 @@ func (c ConfigLanguage) BaseConfig() config.BaseConfig {
 	return c.baseConfig
 }

+func (c ConfigLanguage) FileCaches() any {
+	return c.m.FileCaches
+}
+
 func (c ConfigLanguage) Dirs() config.CommonDirs {
 	return c.config.CommonDirs
 }
@@ -14,7 +14,7 @@
 package allconfig

 import (
-	"github.com/gohugoio/hugo/common/maps"
+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/gohugoio/hugo/config"
 	"github.com/gohugoio/hugo/docshelper"
 )
@@ -27,12 +27,12 @@ func init() {
 			if v.internalOrDeprecated {
 				continue
 			}
-			cfg.Set(configRoot, make(maps.Params))
+			cfg.Set(configRoot, make(hmaps.Params))
 		}
-		lang := maps.Params{
-			"en": maps.Params{
-				"menus":  maps.Params{},
-				"params": maps.Params{},
+		lang := hmaps.Params{
+			"en": hmaps.Params{
+				"menus":  hmaps.Params{},
+				"params": hmaps.Params{},
 			},
 		}
 		cfg.Set("languages", lang)
@@ -25,21 +25,22 @@ import (
 	"github.com/gobwas/glob"
 	"github.com/gohugoio/hugo/common/herrors"
 	"github.com/gohugoio/hugo/common/hexec"
+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/gohugoio/hugo/common/hugo"
 	"github.com/gohugoio/hugo/common/loggers"
-	"github.com/gohugoio/hugo/common/maps"
 	"github.com/gohugoio/hugo/common/paths"
 	"github.com/gohugoio/hugo/common/types"
 	"github.com/gohugoio/hugo/config"
 	"github.com/gohugoio/hugo/helpers"
 	hglob "github.com/gohugoio/hugo/hugofs/hglob"
 	"github.com/gohugoio/hugo/modules"
+	"github.com/gohugoio/hugo/modules/npm"
 	"github.com/gohugoio/hugo/parser/metadecoders"
 	"github.com/spf13/afero"
 )

 //lint:ignore ST1005 end user message.
-var ErrNoConfigFile = errors.New("Unable to locate config file or config directory. Perhaps you need to create a new site.\n       Run `hugo help new` for details.\n")
+var ErrNoConfigFile = errors.New("Unable to locate config file or config directory. Perhaps you need to create a new project.\n       Run `hugo help new` for details.\n")

 func LoadConfig(d ConfigSourceDescriptor) (configs *Configs, err error) {
 	defer func() {
@@ -95,7 +96,11 @@ func LoadConfig(d ConfigSourceDescriptor) (configs *Configs, err error) {
 	configs.Modules = moduleConfig.AllModules
 	configs.ModulesClient = modulesClient

-	if err := configs.Init(d.Logger); err != nil {
+	if !d.SkipNpmCheck && npm.NpmPackNeedsUpdate(d.Fs, configs.Modules) {
+		d.Logger.Warnln(`npm dependencies are out of sync, please run "hugo mod npm pack" (you may also want to run "npm install" after that)`)
+	}
+
+	if err := configs.Init(d.Fs, d.Logger); err != nil {
 		return nil, fmt.Errorf("failed to init config: %w", err)
 	}

@@ -127,6 +132,9 @@ type ConfigSourceDescriptor struct {

 	// If set, this will be used to ignore the module does not exist error.
 	IgnoreModuleDoesNotExist bool
+
+	// If set, skip the npm pack staleness check (used by hugo mod npm pack).
+	SkipNpmCheck bool
 }

 func (d ConfigSourceDescriptor) configFilenames() []string {
@@ -166,7 +174,7 @@ func (l configLoader) applyConfigAliases() error {
 }

 func (l configLoader) applyDefaultConfig() error {
-	defaultSettings := maps.Params{
+	defaultSettings := hmaps.Params{
 		// These dirs are used early/before we build the config struct.
 		"themesDir": "themes",
 		"configDir": "config",
@@ -179,14 +187,14 @@ func (l configLoader) applyDefaultConfig() error {

 func (l configLoader) normalizeCfg(cfg config.Provider) error {
 	if b, ok := cfg.Get("minifyOutput").(bool); ok {
-		hugo.Deprecate("site config minifyOutput", "Use minify.minifyOutput instead.", "v0.150.0")
+		hugo.Deprecate("project config minifyOutput", "Use minify.minifyOutput instead.", "v0.150.0")
 		if b {
 			cfg.Set("minify.minifyOutput", true)
 		}
 	} else if b, ok := cfg.Get("minify").(bool); ok {
-		hugo.Deprecate("site config minify", "Use minify.minifyOutput instead.", "v0.150.0")
+		hugo.Deprecate("project config minify", "Use minify.minifyOutput instead.", "v0.150.0")
 		if b {
-			cfg.Set("minify", maps.Params{"minifyOutput": true})
+			cfg.Set("minify", hmaps.Params{"minifyOutput": true})
 		}
 	}

@@ -240,7 +248,7 @@ func (l configLoader) applyOsEnvOverrides(environ []string) error {
 	}

 	for _, env := range hugoEnv {
-		existing, nestedKey, owner, err := maps.GetNestedParamFn(env.Key, delim, l.cfg.Get)
+		existing, nestedKey, owner, err := hmaps.GetNestedParamFn(env.Key, delim, l.cfg.Get)
 		if err != nil {
 			return err
 		}
@@ -477,6 +485,7 @@ func (l *configLoader) loadModules(configs *Configs, ignoreModuleDoesNotExist bo
 		PublishDir:               publishDir,
 		Environment:              l.Environment,
 		CacheDir:                 conf.Caches.CacheDirModules(),
+		ModuleQueriesCache:       configs.FileCaches.ModuleQueriesCache(),
 		ModuleConfig:             conf.Module,
 		IgnoreVendor:             ignoreVendor,
 		IgnoreModuleDoesNotExist: ignoreModuleDoesNotExist,
@@ -547,7 +556,7 @@ func (l configLoader) loadConfig(configName string) (string, error) {
 }

 func (l configLoader) deleteMergeStrategies() (err error) {
-	l.cfg.WalkParams(func(params ...maps.KeyParams) bool {
+	l.cfg.WalkParams(func(params ...hmaps.KeyParams) bool {
 		params[len(params)-1].Params.DeleteMergeStrategy()
 		return false
 	})
@@ -437,7 +437,7 @@ func (c *CacheBuster) CompileConfig(logger loggers.Logger) error {
 			return nil
 		}
 		return func(ss string) bool {
-			match = targetRe.MatchString(ss)
+			match := targetRe.MatchString(ss)
 			matchString := "no match"
 			if match {
 				matchString = "match!"
@@ -20,11 +20,11 @@ import (
 	"strings"

 	"github.com/gohugoio/hugo/common/herrors"
+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/gohugoio/hugo/parser"

 	"github.com/gohugoio/hugo/common/paths"

-	"github.com/gohugoio/hugo/common/maps"
 	"github.com/gohugoio/hugo/parser/metadecoders"
 	"github.com/spf13/afero"
 )
@@ -222,11 +222,11 @@ func LoadConfigFromDir(sourceFs afero.Fs, configDir, environment string) (Provid
 	return cfg, dirnames, nil
 }

-var keyAliases maps.KeyRenamer
+var keyAliases hmaps.KeyRenamer

 func init() {
 	var err error
-	keyAliases, err = maps.NewKeyRenamer(
+	keyAliases, err = hmaps.NewKeyRenamer(
 		// Before 0.53 we used singular for "menu".
 		"{menu,languages/*/menu}", "menus",
 	)
@@ -16,7 +16,7 @@ package config
 import (
 	"time"

-	"github.com/gohugoio/hugo/common/maps"
+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/gohugoio/hugo/common/paths"
 	"github.com/gohugoio/hugo/common/types"
 	"github.com/gohugoio/hugo/common/urls"
@@ -41,6 +41,7 @@ type AllProvider interface {
 	Dirs() CommonDirs
 	Quiet() bool
 	DirsBase() CommonDirs
+	FileCaches() any
 	ContentTypes() ContentTypesProvider
 	GetConfigSection(string) any
 	GetConfig() any
@@ -96,7 +97,7 @@ type Provider interface {
 	GetString(key string) string
 	GetInt(key string) int
 	GetBool(key string) bool
-	GetParams(key string) maps.Params
+	GetParams(key string) hmaps.Params
 	GetStringMap(key string) map[string]any
 	GetStringMapString(key string) map[string]string
 	GetStringSlice(key string) []string
@@ -104,9 +105,9 @@ type Provider interface {
 	Set(key string, value any)
 	Keys() []string
 	Merge(key string, value any)
-	SetDefaults(params maps.Params)
+	SetDefaults(params hmaps.Params)
 	SetDefaultMergeStrategy()
-	WalkParams(walkFn func(params ...maps.KeyParams) bool)
+	WalkParams(walkFn func(params ...hmaps.KeyParams) bool)
 	IsSet(key string) bool
 }

@@ -20,21 +20,20 @@ import (
 	"strings"
 	"sync"

+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/spf13/cast"
-
-	"github.com/gohugoio/hugo/common/maps"
 )

-// New creates a Provider backed by an empty maps.Params.
+// New creates a Provider backed by an empty hmaps.Params.
 func New() Provider {
 	return &defaultConfigProvider{
-		root: make(maps.Params),
+		root: make(hmaps.Params),
 	}
 }

 // NewFrom creates a Provider backed by params.
-func NewFrom(params maps.Params) Provider {
-	maps.PrepareParams(params)
+func NewFrom(params hmaps.Params) Provider {
+	hmaps.PrepareParams(params)
 	return &defaultConfigProvider{
 		root: params,
 	}
@@ -44,7 +43,7 @@ func NewFrom(params maps.Params) Provider {
 // All methods are thread safe.
 type defaultConfigProvider struct {
 	mu   sync.RWMutex
-	root maps.Params
+	root hmaps.Params

 	keyCache sync.Map
 }
@@ -90,22 +89,22 @@ func (c *defaultConfigProvider) GetString(k string) string {
 	return cast.ToString(v)
 }

-func (c *defaultConfigProvider) GetParams(k string) maps.Params {
+func (c *defaultConfigProvider) GetParams(k string) hmaps.Params {
 	v := c.Get(k)
 	if v == nil {
 		return nil
 	}
-	return v.(maps.Params)
+	return v.(hmaps.Params)
 }

 func (c *defaultConfigProvider) GetStringMap(k string) map[string]any {
 	v := c.Get(k)
-	return maps.ToStringMap(v)
+	return hmaps.ToStringMap(v)
 }

 func (c *defaultConfigProvider) GetStringMapString(k string) map[string]string {
 	v := c.Get(k)
-	return maps.ToStringMapString(v)
+	return hmaps.ToStringMapString(v)
 }

 func (c *defaultConfigProvider) GetStringSlice(k string) []string {
@@ -120,9 +119,9 @@ func (c *defaultConfigProvider) Set(k string, v any) {
 	k = strings.ToLower(k)

 	if k == "" {
-		if p, err := maps.ToParamsAndPrepare(v); err == nil {
+		if p, err := hmaps.ToParamsAndPrepare(v); err == nil {
 			// Set the values directly in root.
-			maps.SetParams(c.root, p)
+			hmaps.SetParams(c.root, p)
 		} else {
 			c.root[k] = v
 		}
@@ -132,7 +131,7 @@ func (c *defaultConfigProvider) Set(k string, v any) {

 	switch vv := v.(type) {
 	case map[string]any, map[any]any, map[string]string:
-		p := maps.MustToParamsAndPrepare(vv)
+		p := hmaps.MustToParamsAndPrepare(vv)
 		v = p
 	}

@@ -142,9 +141,9 @@ func (c *defaultConfigProvider) Set(k string, v any) {
 	}

 	if existing, found := m[key]; found {
-		if p1, ok := existing.(maps.Params); ok {
-			if p2, ok := v.(maps.Params); ok {
-				maps.SetParams(p1, p2)
+		if p1, ok := existing.(hmaps.Params); ok {
+			if p2, ok := v.(hmaps.Params); ok {
+				hmaps.SetParams(p1, p2)
 				return
 			}
 		}
@@ -154,8 +153,8 @@ func (c *defaultConfigProvider) Set(k string, v any) {
 }

 // SetDefaults will set values from params if not already set.
-func (c *defaultConfigProvider) SetDefaults(params maps.Params) {
-	maps.PrepareParams(params)
+func (c *defaultConfigProvider) SetDefaults(params hmaps.Params) {
+	hmaps.PrepareParams(params)
 	for k, v := range params {
 		if _, found := c.root[k]; !found {
 			c.root[k] = v
@@ -170,28 +169,28 @@ func (c *defaultConfigProvider) Merge(k string, v any) {

 	if k == "" {
 		rs, f := c.root.GetMergeStrategy()
-		if f && rs == maps.ParamsMergeStrategyNone {
+		if f && rs == hmaps.ParamsMergeStrategyNone {
 			// The user has set a "no merge" strategy on this,
 			// nothing more to do.
 			return
 		}

-		if p, err := maps.ToParamsAndPrepare(v); err == nil {
+		if p, err := hmaps.ToParamsAndPrepare(v); err == nil {
 			// As there may be keys in p not in root, we need to handle
 			// those as a special case.
 			var keysToDelete []string
 			for kk, vv := range p {
-				if pp, ok := vv.(maps.Params); ok {
+				if pp, ok := vv.(hmaps.Params); ok {
 					if pppi, ok := c.root[kk]; ok {
-						ppp := pppi.(maps.Params)
-						maps.MergeParamsWithStrategy("", ppp, pp)
+						ppp := pppi.(hmaps.Params)
+						hmaps.MergeParamsWithStrategy("", ppp, pp)
 					} else {
 						// We need to use the default merge strategy for
 						// this key.
-						np := make(maps.Params)
-						strategy := c.determineMergeStrategy(maps.KeyParams{Key: "", Params: c.root}, maps.KeyParams{Key: kk, Params: np})
+						np := make(hmaps.Params)
+						strategy := c.determineMergeStrategy(hmaps.KeyParams{Key: "", Params: c.root}, hmaps.KeyParams{Key: kk, Params: np})
 						np.SetMergeStrategy(strategy)
-						maps.MergeParamsWithStrategy("", np, pp)
+						hmaps.MergeParamsWithStrategy("", np, pp)
 						c.root[kk] = np
 						if np.IsZero() {
 							// Just keep it until merge is done.
@@ -201,7 +200,7 @@ func (c *defaultConfigProvider) Merge(k string, v any) {
 				}
 			}
 			// Merge the rest.
-			maps.MergeParams(c.root, p)
+			hmaps.MergeParams(c.root, p)
 			for _, k := range keysToDelete {
 				delete(c.root, k)
 			}
@@ -214,7 +213,7 @@ func (c *defaultConfigProvider) Merge(k string, v any) {

 	switch vv := v.(type) {
 	case map[string]any, map[any]any, map[string]string:
-		p := maps.MustToParamsAndPrepare(vv)
+		p := hmaps.MustToParamsAndPrepare(vv)
 		v = p
 	}

@@ -224,9 +223,9 @@ func (c *defaultConfigProvider) Merge(k string, v any) {
 	}

 	if existing, found := m[key]; found {
-		if p1, ok := existing.(maps.Params); ok {
-			if p2, ok := v.(maps.Params); ok {
-				maps.MergeParamsWithStrategy("", p1, p2)
+		if p1, ok := existing.(hmaps.Params); ok {
+			if p2, ok := v.(hmaps.Params); ok {
+				hmaps.MergeParamsWithStrategy("", p1, p2)
 			}
 		}
 	} else {
@@ -245,10 +244,10 @@ func (c *defaultConfigProvider) Keys() []string {
 	return keys
 }

-func (c *defaultConfigProvider) WalkParams(walkFn func(params ...maps.KeyParams) bool) {
+func (c *defaultConfigProvider) WalkParams(walkFn func(params ...hmaps.KeyParams) bool) {
 	maxDepth := 1000
-	var walk func(depth int, params ...maps.KeyParams)
-	walk = func(depth int, params ...maps.KeyParams) {
+	var walk func(depth int, params ...hmaps.KeyParams)
+	walk = func(depth int, params ...hmaps.KeyParams) {
 		if depth > maxDepth {
 			panic(errors.New("max depth exceeded"))
 		}
@@ -258,24 +257,24 @@ func (c *defaultConfigProvider) WalkParams(walkFn func(params ...maps.KeyParams)
 		p1 := params[len(params)-1]
 		i := len(params)
 		for k, v := range p1.Params {
-			if p2, ok := v.(maps.Params); ok {
-				paramsplus1 := make([]maps.KeyParams, i+1)
+			if p2, ok := v.(hmaps.Params); ok {
+				paramsplus1 := make([]hmaps.KeyParams, i+1)
 				copy(paramsplus1, params)
-				paramsplus1[i] = maps.KeyParams{Key: k, Params: p2}
+				paramsplus1[i] = hmaps.KeyParams{Key: k, Params: p2}
 				walk(depth+1, paramsplus1...)
 			}
 		}
 	}
-	walk(0, maps.KeyParams{Key: "", Params: c.root})
+	walk(0, hmaps.KeyParams{Key: "", Params: c.root})
 }

-func (c *defaultConfigProvider) determineMergeStrategy(params ...maps.KeyParams) maps.ParamsMergeStrategy {
+func (c *defaultConfigProvider) determineMergeStrategy(params ...hmaps.KeyParams) hmaps.ParamsMergeStrategy {
 	if len(params) == 0 {
-		return maps.ParamsMergeStrategyNone
+		return hmaps.ParamsMergeStrategyNone
 	}

 	var (
-		strategy   maps.ParamsMergeStrategy
+		strategy   hmaps.ParamsMergeStrategy
 		prevIsRoot bool
 		curr       = params[len(params)-1]
 	)
@@ -299,10 +298,10 @@ func (c *defaultConfigProvider) determineMergeStrategy(params ...maps.KeyParams)
 	// Don't set a merge strategy on the root unless set by user.
 	// This will be handled as a special case.
 	case "params":
-		strategy = maps.ParamsMergeStrategyDeep
+		strategy = hmaps.ParamsMergeStrategyDeep
 	case "outputformats", "mediatypes":
 		if prevIsRoot {
-			strategy = maps.ParamsMergeStrategyShallow
+			strategy = hmaps.ParamsMergeStrategyShallow
 		}
 	case "menus":
 		isMenuKey := prevIsRoot
@@ -314,11 +313,11 @@ func (c *defaultConfigProvider) determineMergeStrategy(params ...maps.KeyParams)
 			}
 		}
 		if isMenuKey {
-			strategy = maps.ParamsMergeStrategyShallow
+			strategy = hmaps.ParamsMergeStrategyShallow
 		}
 	default:
 		if strategy == "" {
-			strategy = maps.ParamsMergeStrategyNone
+			strategy = hmaps.ParamsMergeStrategyNone
 		}
 	}

@@ -326,7 +325,7 @@ func (c *defaultConfigProvider) determineMergeStrategy(params ...maps.KeyParams)
 }

 func (c *defaultConfigProvider) SetDefaultMergeStrategy() {
-	c.WalkParams(func(params ...maps.KeyParams) bool {
+	c.WalkParams(func(params ...hmaps.KeyParams) bool {
 		if len(params) == 0 {
 			return false
 		}
@@ -344,7 +343,7 @@ func (c *defaultConfigProvider) SetDefaultMergeStrategy() {
 	})
 }

-func (c *defaultConfigProvider) getNestedKeyAndMap(key string, create bool) (string, maps.Params) {
+func (c *defaultConfigProvider) getNestedKeyAndMap(key string, create bool) (string, hmaps.Params) {
 	var parts []string
 	v, ok := c.keyCache.Load(key)
 	if ok {
@@ -358,14 +357,14 @@ func (c *defaultConfigProvider) getNestedKeyAndMap(key string, create bool) (str
 		next, found := current[parts[i]]
 		if !found {
 			if create {
-				next = make(maps.Params)
+				next = make(hmaps.Params)
 				current[parts[i]] = next
 			} else {
 				return "", nil
 			}
 		}
 		var ok bool
-		current, ok = next.(maps.Params)
+		current, ok = next.(hmaps.Params)
 		if !ok {
 			// E.g. a string, not a map that we can store values in.
 			return "", nil
@@ -22,10 +22,9 @@ import (
 	"strings"
 	"testing"

+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/gohugoio/hugo/common/para"

-	"github.com/gohugoio/hugo/common/maps"
-
 	qt "github.com/frankban/quicktest"
 )

@@ -48,7 +47,7 @@ func TestDefaultConfigProvider(t *testing.T) {
 		c.Assert(cfg.Get(k), qt.Equals, v)
 		c.Assert(cfg.GetInt(k), qt.Equals, v)

-		c.Assert(cfg.Get(""), qt.DeepEquals, maps.Params{
+		c.Assert(cfg.Get(""), qt.DeepEquals, hmaps.Params{
 			"foo": 42,
 		})
 	})
@@ -60,7 +59,7 @@ func TestDefaultConfigProvider(t *testing.T) {
 			"bar": "baz",
 		})

-		c.Assert(cfg.Get("foo"), qt.DeepEquals, maps.Params{
+		c.Assert(cfg.Get("foo"), qt.DeepEquals, hmaps.Params{
 			"bar": "baz",
 		})

@@ -76,14 +75,14 @@ func TestDefaultConfigProvider(t *testing.T) {
 		})
 		cfg.Set("a.c", "cv")

-		c.Assert(cfg.Get("a"), qt.DeepEquals, maps.Params{
+		c.Assert(cfg.Get("a"), qt.DeepEquals, hmaps.Params{
 			"b": "bv",
 			"c": "cv",
 		})
 		c.Assert(cfg.Get("a.c"), qt.Equals, "cv")

 		cfg.Set("b.a", "av")
-		c.Assert(cfg.Get("b"), qt.DeepEquals, maps.Params{
+		c.Assert(cfg.Get("b"), qt.DeepEquals, hmaps.Params{
 			"a": "av",
 		})

@@ -91,7 +90,7 @@ func TestDefaultConfigProvider(t *testing.T) {
 			"b": "bv",
 		})

-		c.Assert(cfg.Get("b"), qt.DeepEquals, maps.Params{
+		c.Assert(cfg.Get("b"), qt.DeepEquals, hmaps.Params{
 			"a": "av",
 			"b": "bv",
 		})
@@ -105,7 +104,7 @@ func TestDefaultConfigProvider(t *testing.T) {
 			"b": "bv2",
 		})

-		c.Assert(cfg.Get(""), qt.DeepEquals, maps.Params{
+		c.Assert(cfg.Get(""), qt.DeepEquals, hmaps.Params{
 			"a": "av2",
 			"b": "bv2",
 		})
@@ -118,7 +117,7 @@ func TestDefaultConfigProvider(t *testing.T) {
 			"b": "bv2",
 		})

-		c.Assert(cfg.Get(""), qt.DeepEquals, maps.Params{
+		c.Assert(cfg.Get(""), qt.DeepEquals, hmaps.Params{
 			"a": "av",
 			"b": "bv2",
 		})
@@ -137,7 +136,7 @@ func TestDefaultConfigProvider(t *testing.T) {
 			},
 		})

-		c.Assert(cfg.Get("foo"), qt.DeepEquals, maps.Params{
+		c.Assert(cfg.Get("foo"), qt.DeepEquals, hmaps.Params{
 			"a": "av",
 			"b": "bv2",
 		})
@@ -155,7 +154,7 @@ func TestDefaultConfigProvider(t *testing.T) {
 			"c": "cv2",
 		})

-		c.Assert(cfg.Get("a"), qt.DeepEquals, maps.Params{
+		c.Assert(cfg.Get("a"), qt.DeepEquals, hmaps.Params{
 			"b": "bv",
 			"c": "cv2",
 		})
@@ -169,7 +168,7 @@ func TestDefaultConfigProvider(t *testing.T) {
 			"b": "bv2",
 		})

-		c.Assert(cfg.Get(""), qt.DeepEquals, maps.Params{
+		c.Assert(cfg.Get(""), qt.DeepEquals, hmaps.Params{
 			"a": "av",
 		})
 	})
@@ -192,11 +191,11 @@ func TestDefaultConfigProvider(t *testing.T) {
 			"e": "ev2",
 		})

-		c.Assert(cfg.Get("a"), qt.DeepEquals, maps.Params{
+		c.Assert(cfg.Get("a"), qt.DeepEquals, hmaps.Params{
 			"e":      "ev2",
-			"_merge": maps.ParamsMergeStrategyShallow,
+			"_merge": hmaps.ParamsMergeStrategyShallow,
 			"b":      "bv",
-			"c": maps.Params{
+			"c": hmaps.Params{
 				"b": "bv",
 			},
 		})
@@ -221,15 +220,15 @@ func TestDefaultConfigProvider(t *testing.T) {
 				"b": left,
 			})

-			cfg.Merge("", maps.Params{
-				"b": maps.Params{
+			cfg.Merge("", hmaps.Params{
+				"b": hmaps.Params{
 					"c": "cv2",
 					"d": "dv2",
 				},
 			})

-			c.Assert(cfg.Get(""), qt.DeepEquals, maps.Params{
-				"b": maps.Params{
+			c.Assert(cfg.Get(""), qt.DeepEquals, hmaps.Params{
+				"b": hmaps.Params{
 					"c": "cv1",
 					"d": "dv2",
 				},
@@ -267,8 +266,8 @@ func TestDefaultConfigProvider(t *testing.T) {

 				cfg.Merge("a", right)

-				c.Assert(cfg.Get(""), qt.DeepEquals, maps.Params{
-					"a": maps.Params{
+				c.Assert(cfg.Get(""), qt.DeepEquals, hmaps.Params{
+					"a": hmaps.Params{
 						"b": "bv1",
 						"c": "cv2",
 					},
@@ -292,7 +291,7 @@ func TestDefaultConfigProvider(t *testing.T) {
 			},
 		})

-		c.Assert(cfg.Get(""), qt.DeepEquals, maps.Params{
+		c.Assert(cfg.Get(""), qt.DeepEquals, hmaps.Params{
 			"b": "bv",
 		})
 	})
@@ -341,7 +340,7 @@ func TestDefaultConfigProvider(t *testing.T) {
 					return err
 				}

-				m := maps.Params{
+				m := hmaps.Params{
 					"new": 42,
 				}

@@ -371,8 +370,8 @@ func TestDefaultConfigProvider(t *testing.T) {
 		cfg := New()
 		k := "foo"

-		cfg.Set(k, maps.Params{k: true})
-		c.Assert(cfg.GetParams(k), qt.DeepEquals, maps.Params{
+		cfg.Set(k, hmaps.Params{k: true})
+		c.Assert(cfg.GetParams(k), qt.DeepEquals, hmaps.Params{
 			k: true,
 		})

@@ -384,8 +383,8 @@ func TestDefaultConfigProvider(t *testing.T) {
 		k := "foo"
 		k2 := "bar"

-		cfg.Set(k, maps.Params{k: struct{}{}})
-		cfg.Set(k2, maps.Params{k2: struct{}{}})
+		cfg.Set(k, hmaps.Params{k: struct{}{}})
+		cfg.Set(k2, hmaps.Params{k2: struct{}{}})

 		c.Assert(len(cfg.Keys()), qt.Equals, 2)

@@ -401,11 +400,11 @@ func TestDefaultConfigProvider(t *testing.T) {
 	c.Run("WalkParams", func(c *qt.C) {
 		cfg := New()

-		cfg.Set("x", maps.Params{})
-		cfg.Set("y", maps.Params{})
+		cfg.Set("x", hmaps.Params{})
+		cfg.Set("y", hmaps.Params{})

 		var got []string
-		cfg.WalkParams(func(params ...maps.KeyParams) bool {
+		cfg.WalkParams(func(params ...hmaps.KeyParams) bool {
 			got = append(got, params[len(params)-1].Key)
 			return false
 		})
@@ -417,7 +416,7 @@ func TestDefaultConfigProvider(t *testing.T) {
 		c.Assert(got, qt.DeepEquals, want)

 		cfg = New()
-		cfg.WalkParams(func(params ...maps.KeyParams) bool {
+		cfg.WalkParams(func(params ...hmaps.KeyParams) bool {
 			return true
 		})

@@ -429,7 +428,7 @@ func TestDefaultConfigProvider(t *testing.T) {
 	c.Run("SetDefaults", func(c *qt.C) {
 		cfg := New()

-		cfg.SetDefaults(maps.Params{
+		cfg.SetDefaults(hmaps.Params{
 			"foo": "bar",
 			"bar": "baz",
 		})
@@ -18,7 +18,7 @@ import (
 	"testing"

 	qt "github.com/frankban/quicktest"
-	"github.com/gohugoio/hugo/common/maps"
+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/mitchellh/mapstructure"
 )

@@ -32,7 +32,7 @@ func TestNamespace(t *testing.T) {
 		map[string]any{"foo": "bar"},
 		func(v any) (*tstNsExt, any, error) {
 			t := &tstNsExt{}
-			m, err := maps.ToStringMapE(v)
+			m, err := hmaps.ToStringMapE(v)
 			if err != nil {
 				return nil, nil, err
 			}
@@ -202,7 +202,7 @@ func stringSliceToWhitelistHook() mapstructure.DecodeHookFuncType {
 		t reflect.Type,
 		data any,
 	) (any, error) {
-		if t != reflect.TypeOf(Whitelist{}) {
+		if t != reflect.TypeFor[Whitelist]() {
 			return data, nil
 		}

@@ -17,11 +17,12 @@ package testconfig
 import (
 	_ "unsafe"

-	"github.com/gohugoio/hugo/common/maps"
+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/gohugoio/hugo/config"
 	"github.com/gohugoio/hugo/config/allconfig"
 	"github.com/gohugoio/hugo/deps"
 	"github.com/gohugoio/hugo/hugofs"
+	"github.com/gohugoio/hugo/internal/warpc"
 	toml "github.com/pelletier/go-toml/v2"
 	"github.com/spf13/afero"
 )
@@ -60,6 +61,14 @@ func GetTestDeps(fs afero.Fs, cfg config.Provider, beforeInit ...func(*deps.Deps
 	d := &deps.Deps{
 		Conf: conf,
 		Fs:   hugofs.NewFrom(fs, conf.BaseConfig()),
+		WasmDispatchers: warpc.AllDispatchers(
+			warpc.Options{
+				PoolSize: 1,
+			},
+			warpc.Options{
+				PoolSize: 1,
+			},
+		),
 	}
 	for _, f := range beforeInit {
 		f(d)
@@ -75,7 +84,7 @@ func GetTestConfigSectionFromStruct(section string, v any) config.AllProvider {
 	if err != nil {
 		panic(err)
 	}
-	p := maps.Params{
+	p := hmaps.Params{
 		section: config.FromTOMLConfigString(string(data)).Get(""),
 	}
 	cfg := config.NewFrom(p)
@@ -36,7 +36,7 @@ import (
 )

 const (
-	// DefaultArchetypeTemplateTemplate is the template used in 'hugo new site'
+	// DefaultArchetypeTemplateTemplate is the template used in 'hugo new project'
 	// and the template we use as a fall back.
 	DefaultArchetypeTemplateTemplate = `---
 title: "{{ replace .File.ContentBaseName "-" " " | title }}"
@@ -271,7 +271,7 @@ func (b *contentBuilder) setArcheTypeFilenameToUse(ext string) {
 func (b *contentBuilder) applyArcheType(contentFilename string, archetypeFi hugofs.FileMetaInfo) error {
 	p := b.h.GetContentPage(contentFilename)
 	if p == nil {
-		panic(fmt.Sprintf("[BUG] no Page found for %q", contentFilename))
+		return fmt.Errorf("no page found for %q; if a file with the same name but different case already exists, please use a different filename or remove the existing file", contentFilename)
 	}

 	f, err := b.sourceFs.Create(contentFilename)
@@ -27,8 +27,8 @@ import (
 	"github.com/spf13/afero"
 )

-//go:embed all:site/*
-var siteFs embed.FS
+//go:embed all:project/*
+var projectFs embed.FS

 //go:embed all:theme/*
 var themeFs embed.FS
@@ -41,10 +41,10 @@ func CreateTheme(createpath string, sourceFs afero.Fs, format string) error {

 	format = strings.ToLower(format)

-	siteConfig := map[string]any{
-		"baseURL":      "https://example.org/",
-		"languageCode": "en-US",
-		"title":        "My New Hugo Site",
+	projectConfig := map[string]any{
+		"baseURL": "https://example.org/",
+		"locale":  "en-US",
+		"title":   "My New Hugo Project",
 		"menus": map[string]any{
 			"main": []any{
 				map[string]any{
@@ -72,7 +72,7 @@ func CreateTheme(createpath string, sourceFs afero.Fs, format string) error {
 		},
 	}

-	err := createSiteConfig(sourceFs, createpath, siteConfig, format)
+	err := createProjectConfig(sourceFs, createpath, projectConfig, format)
 	if err != nil {
 		return err
 	}
@@ -91,8 +91,8 @@ func CreateTheme(createpath string, sourceFs afero.Fs, format string) error {
 	return copyFiles(createpath, sourceFs, themeFs)
 }

-// CreateSite creates a site skeleton.
-func CreateSite(createpath string, sourceFs afero.Fs, force bool, format string) error {
+// CreateProject creates a project skeleton.
+func CreateProject(createpath string, sourceFs afero.Fs, force bool, format string) error {
 	format = strings.ToLower(format)
 	if exists, _ := helpers.Exists(createpath, sourceFs); exists {
 		if isDir, _ := helpers.IsDir(createpath, sourceFs); !isDir {
@@ -106,7 +106,7 @@ func CreateSite(createpath string, sourceFs afero.Fs, force bool, format string)
 			return errors.New(createpath + " already exists and is not empty. See --force.")
 		case !isEmpty && force:
 			var all []string
-			fs.WalkDir(siteFs, ".", func(path string, d fs.DirEntry, err error) error {
+			fs.WalkDir(projectFs, ".", func(path string, d fs.DirEntry, err error) error {
 				if d.IsDir() && path != "." {
 					all = append(all, path)
 				}
@@ -121,13 +121,13 @@ func CreateSite(createpath string, sourceFs afero.Fs, force bool, format string)
 		}
 	}

-	siteConfig := map[string]any{
-		"baseURL":      "https://example.org/",
-		"title":        "My New Hugo Site",
-		"languageCode": "en-us",
+	projectConfig := map[string]any{
+		"baseURL": "https://example.org/",
+		"locale":  "en-us",
+		"title":   "My New Hugo Project",
 	}

-	err := createSiteConfig(sourceFs, createpath, siteConfig, format)
+	err := createProjectConfig(sourceFs, createpath, projectConfig, format)
 	if err != nil {
 		return err
 	}
@@ -143,7 +143,7 @@ func CreateSite(createpath string, sourceFs afero.Fs, force bool, format string)
 		return err
 	}

-	return copyFiles(createpath, sourceFs, siteFs)
+	return copyFiles(createpath, sourceFs, projectFs)
 }

 func copyFiles(createpath string, sourceFs afero.Fs, skeleton embed.FS) error {
@@ -161,7 +161,7 @@ func copyFiles(createpath string, sourceFs afero.Fs, skeleton embed.FS) error {
 	})
 }

-func createSiteConfig(fs afero.Fs, createpath string, in map[string]any, format string) (err error) {
+func createProjectConfig(fs afero.Fs, createpath string, in map[string]any, format string) (err error) {
 	var buf bytes.Buffer
 	err = parser.InterfaceToConfig(in, metadecoders.FormatFromString(format), &buf)
 	if err != nil {
@@ -0,0 +1,4 @@
+footer {
+  border-top: 1px solid #222;
+  margin-top: 1rem;
+}
@@ -0,0 +1,4 @@
+header {
+  border-bottom: 1px solid #222;
+  margin-bottom: 1rem;
+}
@@ -1,3 +1,6 @@
+@import "components/header.css";
+@import "components/footer.css";
+
 body {
  color: #222;
  font-family: sans-serif;
@@ -6,16 +9,6 @@ body {
  max-width: 768px;
 }

-header {
-  border-bottom: 1px solid #222;
-  margin-bottom: 1rem;
-}
-
-footer {
-  border-top: 1px solid #222;
-  margin-top: 1rem;
-}
-
 a {
  color: #00e;
  text-decoration: none;
@@ -1,9 +1,15 @@
 {{- with resources.Get "css/main.css" }}
-  {{- if hugo.IsDevelopment }}
-    <link rel="stylesheet" href="{{ .RelPermalink }}">
-  {{- else }}
-    {{- with . | minify | fingerprint }}
-      <link rel="stylesheet" href="{{ .RelPermalink }}" integrity="{{ .Data.Integrity }}" crossorigin="anonymous">
+  {{- $opts := dict
+    "minify" (cond hugo.IsDevelopment false true)
+    "sourceMap" (cond hugo.IsDevelopment "linked" "none")
+  }}
+  {{- with . | css.Build $opts }}
+    {{- if hugo.IsDevelopment }}
+      <link rel="stylesheet" href="{{ .RelPermalink }}">
+    {{- else }}
+      {{- with . | fingerprint }}
+        <link rel="stylesheet" href="{{ .RelPermalink }}" integrity="{{ .Data.Integrity }}" crossorigin="anonymous">
+      {{- end }}
    {{- end }}
  {{- end }}
 {{- end }}
@@ -1,8 +1,7 @@
 {{- with resources.Get "js/main.js" }}
  {{- $opts := dict
-    "minify" (not hugo.IsDevelopment)
-    "sourceMap" (cond hugo.IsDevelopment "external" "")
-    "targetPath" "js/main.js"
+    "minify" (cond hugo.IsDevelopment false true)
+    "sourceMap" (cond hugo.IsDevelopment "linked" "none")
  }}
  {{- with . | js.Build $opts }}
    {{- if hugo.IsDevelopment }}
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="{{ site.Language.LanguageCode }}" dir="{{ or site.Language.LanguageDirection `ltr` }}">
+<html lang="{{ site.Language.Locale }}" dir="{{ or site.Language.Direction `ltr` }}">
 <head>
  {{ partial "head.html" . }}
 </head>
@@ -1,3 +1,16 @@
+// Copyright 2025 The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package deps

 import (
@@ -15,8 +28,8 @@ import (
 	"github.com/gohugoio/hugo/cache/dynacache"
 	"github.com/gohugoio/hugo/cache/filecache"
 	"github.com/gohugoio/hugo/common/hexec"
+	"github.com/gohugoio/hugo/common/hmaps"
 	"github.com/gohugoio/hugo/common/loggers"
-	"github.com/gohugoio/hugo/common/maps"
 	"github.com/gohugoio/hugo/common/types"
 	"github.com/gohugoio/hugo/config"
 	"github.com/gohugoio/hugo/config/allconfig"
@@ -160,8 +173,8 @@ func (d *Deps) Init() error {
 			d.BuildState.DeferredExecutionsGroupedByRenderingContext = make(map[tpl.RenderingContext]*DeferredExecutions)
 		}
 		d.BuildState.DeferredExecutions = &DeferredExecutions{
-			Executions:              maps.NewCache[string, *tpl.DeferredExecution](),
-			FilenamesWithPostPrefix: maps.NewCache[string, bool](),
+			Executions:              hmaps.NewCache[string, *tpl.DeferredExecution](),
+			FilenamesWithPostPrefix: hmaps.NewCache[string, bool](),
 		}
 	}

@@ -247,12 +260,12 @@ func (d *Deps) Init() error {
 		common = d.ResourceSpec.SpecCommon
 	}

-	fileCaches, err := filecache.NewCaches(d.PathSpec)
-	if err != nil {
-		return fmt.Errorf("failed to create file caches from configuration: %w", err)
-	}
+	d.Cfg.BaseConfig()

-	resourceSpec, err := resources.NewSpec(d.PathSpec, common, fileCaches, d.MemCache, d.BuildState, d.Log, d, d.ExecHelper, d.BuildClosers, d.BuildState)
+	fileCaches := d.Cfg.FileCaches().(filecache.Caches)
+	fileCaches.SetResourceFs(d.BaseFs.ResourcesCache)
+
+	resourceSpec, err := resources.NewSpec(d.PathSpec, common, d.WasmDispatchers, fileCaches, d.MemCache, d.BuildState, d.Log, d, d.ExecHelper, d.BuildClosers, d.BuildState)
 	if err != nil {
 		return fmt.Errorf("failed to create resource spec: %w", err)
 	}
@@ -428,6 +441,9 @@ type DepsCfg struct {
 type BuildState struct {
 	counter uint64

+	// Tracks invocations of the Build method.
+	BuildCounter atomic.Uint64
+
 	mu sync.Mutex // protects state below.

 	OnSignalRebuild func(ids ...identity.Identity)
@@ -451,14 +467,19 @@ type Counters struct {
 type DeferredExecutions struct {
 	// A set of filenames in /public that
 	// contains a post-processing prefix.
-	FilenamesWithPostPrefix *maps.Cache[string, bool]
+	FilenamesWithPostPrefix *hmaps.Cache[string, bool]

 	// Maps a placeholder to a deferred execution.
-	Executions *maps.Cache[string, *tpl.DeferredExecution]
+	Executions *hmaps.Cache[string, *tpl.DeferredExecution]
 }

 var _ identity.SignalRebuilder = (*BuildState)(nil)

+// IsRebuild reports whether this is a rebuild.
+func (b *BuildState) IsRebuild() bool {
+	return b.BuildCounter.Load() > 0
+}
+
 // StartStageRender will be called before a stage is rendered.
 func (b *BuildState) StartStageRender(stage tpl.RenderingContext) {
 }
@@ -467,8 +488,8 @@ func (b *BuildState) StartStageRender(stage tpl.RenderingContext) {
 func (b *BuildState) StopStageRender(stage tpl.RenderingContext) {
 	b.DeferredExecutionsGroupedByRenderingContext[stage] = b.DeferredExecutions
 	b.DeferredExecutions = &DeferredExecutions{
-		Executions:              maps.NewCache[string, *tpl.DeferredExecution](),
-		FilenamesWithPostPrefix: maps.NewCache[string, bool](),
+		Executions:              hmaps.NewCache[string, *tpl.DeferredExecution](),
+		FilenamesWithPostPrefix: hmaps.NewCache[string, bool](),
 	}
 }

@@ -4,10 +4,10 @@
 [codespell]

 # Comma separated list of dirs to be skipped.
-skip = *.ai,chroma.css,chroma_dark.css,.cspell.json
+skip = *.ai,chroma.css,chroma_dark.css,.cspell.json,./data/docs.yaml

 # Comma separated list of words to be ignored. Words must be lowercased.
-ignore-words-list = abl,edn,januar,te,trys,ue,womens
+ignore-words-list = abl,edn,ist,januar,te,trys,ue,womens

 # Check file names as well.
 check-filenames = true
--- a/Show More
+++ b/Show More