diff --git a/.github/actions/verify-npm-hardening/README.md b/.github/actions/verify-npm-hardening/README.md
index 7631a76..f1b5b22 100644
--- a/.github/actions/verify-npm-hardening/README.md
+++ b/.github/actions/verify-npm-hardening/README.md
@@ -88,6 +88,7 @@ steps:
 | Name      | Default | Description                                                       |
 |-----------|---------|-------------------------------------------------------------------|
 | `min-age` | `7`     | Minimum acceptable `min-release-age` value in days. Must be >= 7. |
+| `working-directory` | `.` | Folder that holds `package.json` and `.npmrc`, relative to the repository root. Example: `frontend` |
 
 ```yaml
 - uses: ./.github/actions/verify-npm-hardening
diff --git a/.github/actions/verify-npm-hardening/action.yml b/.github/actions/verify-npm-hardening/action.yml
index d918bc7..015dd53 100644
--- a/.github/actions/verify-npm-hardening/action.yml
+++ b/.github/actions/verify-npm-hardening/action.yml
@@ -9,6 +9,8 @@
 #     - run: npm ci
 #
 # Inputs:
+#   working-directory (optional, default: .)
+#     Folder that holds package.json and .npmrc.
 #   min-age (optional, default: 7)
 #     Minimum acceptable min-release-age value in days. Must be >= 7.
 
@@ -16,6 +18,10 @@ name: Verify npm supply chain hardening
 description: Checks .npmrc settings and lockfile presence before npm ci
 
 inputs:
+    working-directory:
+        description: 'Folder that holds package.json, relative to the repository root. Example: ., frontend'
+        required: false
+        default: .
     min-age:
         description: Minimum acceptable min-release-age value in days
         required: false
@@ -26,6 +32,7 @@ runs:
     steps:
         - name: Check required files
           shell: bash
+          working-directory: ${{ inputs.working-directory }}
           run: |
               errors=0
 
@@ -47,6 +54,7 @@ runs:
 
         - name: Verify .npmrc hardening settings
           shell: bash
+          working-directory: ${{ inputs.working-directory }}
           env:
               MIN_AGE: ${{ inputs.min-age }}
           run: |
@@ -84,6 +92,7 @@ runs:
 
         - name: Check for non-registry dependencies in package.json
           shell: bash
+          working-directory: ${{ inputs.working-directory }}
           run: |
               # Git-hosted and URL-based dependencies bypass min-release-age
               # entirely because they are not fetched from the npm registry.
@@ -115,6 +124,7 @@ runs:
 
         - name: Check for non-registry URLs in lockfile
           shell: bash
+          working-directory: ${{ inputs.working-directory }}
           run: |
               # A tampered lockfile could resolve packages to non-registry
               # sources even if package.json looks clean.
diff --git a/.github/workflows/README.md b/.github/workflows/README.md
index b996acd..7690e96 100644
--- a/.github/workflows/README.md
+++ b/.github/workflows/README.md
@@ -296,13 +296,14 @@ npm-only and PHP-only repositories.
 
 | Job | What it checks |
 | --- | --- |
-| `Secrets` | Committed `.env` files, and Gitleaks over the full git history |
+| `Secrets` | Committed `.env` files anywhere in the repository, and Gitleaks over the full git history. Examples, `.env.testing`, `.env.ci` and templates (`.dist`, `.sample`, `.template`, `.tpl`, `.j2`, `.jinja`, `.jinja2`) are allowed |
 | `Dev tool configs` | Script files and suspicious commands in `.vscode`, `.claude`, `.cursor` and `.idea`. See [`scan-dev-configs`](../actions/scan-dev-configs/README.md) |
 | `npm supply chain hardening` | `.npmrc` settings and lockfile. See [`verify-npm-hardening`](../actions/verify-npm-hardening/README.md) |
-| `Dependency audit` | `composer audit` and `npm audit` against the lock files |
+| `Dependency audit` | `composer audit --locked` and `npm audit` against the lock files. No install is needed |
 
 | Input | Default | Example values |
 | --- | --- | --- |
+| `working-directory` | `.` | `frontend`, `apps/web`. The npm hardening and audit checks run there |
 | `php-version` | `'8.4'` | `'8.3'` |
 | `npm-audit-level` | `high` | `low`, `moderate`, `critical` |
 | `strict-dev-configs` | `false` (warn only) | `true` (fail on suspicious commands) |
@@ -348,6 +349,7 @@ jobs:
 | `Codecov` fails on your own pull requests | The `CODECOV_TOKEN` secret is missing or not passed under `secrets:`. Pull requests from forks get no secrets, so there the upload failure does not fail the job. |
 | `Environment file '...' not found` (Laravel) | Your repository has no `.env.testing` and no `.env.example`, or `env-file` points to a missing file. |
 | Browser tests also run in `Backend tests` (Laravel) | Exclude the browser suite in `test-command`, for example `vendor/bin/pest --exclude-testsuite=Browser`. |
+| `Environment files are committed to the repository` | A real env file, such as `.env` or `.env.production`, is committed. Remove it and rotate its secrets. A template must end in `.example`, `.dist`, `.sample`, `.template`, `.tpl`, `.j2`, `.jinja` or `.jinja2`. |
 | `Script files found in dev tool directories` | A script file is in `.vscode`, `.claude`, `.cursor` or `.idea`. Remove it, or review it and add it to `allowed-dev-scripts`. |
 | PHPStan or Rector re-analyse every file on each run | `analysis-cache-paths` does not match `tmpDir` in `phpstan.neon` or `cacheDirectory` in `rector.php`. |
 
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index 85e2499..113d008 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -24,6 +24,10 @@ name: Security
 on:
   workflow_call:
     inputs:
+      working-directory:
+        description: 'Folder that holds composer.json and package.json, relative to the repository root. The npm hardening and audit checks run there. Example: ., frontend, apps/web'
+        type: string
+        default: .
       php-version:
         description: PHP version used to run `composer audit`.
         type: string
@@ -56,12 +60,16 @@ jobs:
           fetch-depth: 0
           persist-credentials: false
 
+      # The whole repository, not only working-directory. Examples, test files
+      # and templates (.dist, .sample, .template, .tpl, Jinja) are allowed.
       - name: Check for committed environment files
         run: |
           found=$(find . -type f -name '.env*' \
-            -not -path './vendor/*' -not -path './node_modules/*' -not -path './.git/*' \
-            -not -name '.env.example' -not -name '.env.*.example' \
-            -not -name '.env.testing' -not -name '.env.ci')
+            -not -path '*/vendor/*' -not -path '*/node_modules/*' -not -path './.git/*' \
+            -not -name '.env.testing' -not -name '.env.ci' \
+            -not -name '.env*.example' -not -name '.env*.dist' -not -name '.env*.sample' \
+            -not -name '.env*.template' -not -name '.env*.tpl' \
+            -not -name '.env*.j2' -not -name '.env*.jinja' -not -name '.env*.jinja2')
           if [ -n "$found" ]; then
             echo "::error::Environment files are committed to the repository:"
             echo "$found"
@@ -123,6 +131,9 @@ jobs:
     name: npm supply chain hardening
     runs-on: ubuntu-latest
     timeout-minutes: 5
+    defaults:
+      run:
+        working-directory: ${{ inputs.working-directory }}
     steps:
       - name: Check out repository
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -141,17 +152,22 @@ jobs:
           persist-credentials: false
 
       - name: Verify npm hardening
-        if: hashFiles('package.json') != ''
+        if: hashFiles(format('{0}/package.json', inputs.working-directory)) != ''
         uses: ./.scify-github/.github/actions/verify-npm-hardening
+        with:
+          working-directory: ${{ inputs.working-directory }}
 
       - name: No package.json
-        if: hashFiles('package.json') == ''
+        if: hashFiles(format('{0}/package.json', inputs.working-directory)) == ''
         run: echo "No package.json, skipping."
 
   audit:
     name: Dependency audit
     runs-on: ubuntu-latest
     timeout-minutes: 10
+    defaults:
+      run:
+        working-directory: ${{ inputs.working-directory }}
     steps:
       - name: Check out repository
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -159,23 +175,24 @@ jobs:
           persist-credentials: false
 
       - name: Set up PHP
-        if: hashFiles('composer.lock') != ''
+        if: hashFiles(format('{0}/composer.lock', inputs.working-directory)) != ''
         uses: shivammathur/setup-php@f3e473d116dcccaddc5834248c87452386958240 # 2.37.2
         with:
           php-version: ${{ inputs.php-version }}
           coverage: none
           tools: composer:v2
 
+      # --locked reads composer.lock, so no `composer install` is needed.
       - name: Composer audit
-        if: hashFiles('composer.lock') != ''
-        run: composer audit --format=table
+        if: hashFiles(format('{0}/composer.lock', inputs.working-directory)) != ''
+        run: composer audit --locked --format=table
 
       - name: npm audit
-        if: hashFiles('package-lock.json') != ''
+        if: hashFiles(format('{0}/package-lock.json', inputs.working-directory)) != ''
         env:
           LEVEL: ${{ inputs.npm-audit-level }}
         run: npm audit --audit-level="$LEVEL"
 
       - name: Nothing to audit
-        if: hashFiles('composer.lock', 'package-lock.json') == ''
+        if: hashFiles(format('{0}/composer.lock', inputs.working-directory), format('{0}/package-lock.json', inputs.working-directory)) == ''
         run: echo "No composer.lock or package-lock.json, skipping."
diff --git a/.github/workflows/self-check.yml b/.github/workflows/self-check.yml
index 21cf82b..af67c73 100644
--- a/.github/workflows/self-check.yml
+++ b/.github/workflows/self-check.yml
@@ -7,7 +7,8 @@
 #   - every workflow template .properties.json file parses
 #   - every internal `scify/.github/...@vX` reference uses the same release tag
 #   - the composite actions pass on good fixtures and fail on bad ones
-#   - security.yml runs on this repository (it loads its actions by job.workflow_sha)
+#   - security.yml runs on this repository (it loads its actions by job.workflow_sha),
+#     and on tests/fixtures/security (composer.lock, package-lock.json, .env template)
 #   - smoke tests: laravel-ci.yml and node-ci.yml run against the fixture
 #     projects in tests/fixtures/, once with defaults and once with commands
 #
@@ -160,6 +161,12 @@ jobs:
     name: Security workflow on this repository
     uses: ./.github/workflows/security.yml
 
+  security-fixture:
+    name: Security workflow on the fixture
+    uses: ./.github/workflows/security.yml
+    with:
+      working-directory: tests/fixtures/security
+
   laravel-defaults:
     name: Laravel CI, defaults
     uses: ./.github/workflows/laravel-ci.yml
diff --git a/README.md b/README.md
index 4c84670..4cd72a0 100644
--- a/README.md
+++ b/README.md
@@ -71,22 +71,32 @@ template does not reach existing copies. Re-run the command to pick it up.
 
 ### Versioning
 
-This repository is work in progress. Releases are tagged `v0.x` and callers
-pin to the current one, `v0.1`. Any `v0.x` release may change inputs or
-defaults. When the workflows have run in real repositories for a while, `v1`
-becomes the first stable tag and moves forward only for backwards-compatible
-fixes.
+This repository is work in progress. Releases follow the usual GitHub Actions
+convention:
 
-To publish a new release:
+- Each release has its own tag, for example `v0.1.1`. It never moves.
+- The short tag, for example `v0.1`, moves to the latest release of that line.
+  Callers pin to it and receive fixes without a change.
+- Any `v0.x` line may change inputs or defaults. A change that breaks callers
+  starts a new line, for example `v0.2`.
 
-1. Update every `@v0.x` reference in the documentation and comments to the new
-   tag. The self-check fails when they differ.
-2. Tag and push:
+When the workflows have run in real repositories for a while, `v1` becomes the
+first stable line.
+
+To publish a fix release on the `v0.1` line:
+
+1. Merge the fix to `main` and wait for a green Self-check.
+2. Tag the release and move the short tag:
 
    ```bash
-   git tag v0.2 && git push origin v0.2
+   git tag -a v0.1.1 -m v0.1.1 origin/main && git push origin v0.1.1
+   git tag -f -a v0.1 -m v0.1 origin/main && git push -f origin v0.1
+   gh release create v0.1.1 --title v0.1.1 --notes "..."
    ```
 
+To start a new line, update every `@v0.x` reference in the documentation and
+comments to the new tag first. The self-check fails when they differ.
+
 ### Composite actions and the release tag
 
 The organisation requires every action to be pinned to a full commit SHA, and
diff --git a/tests/fixtures/README.md b/tests/fixtures/README.md
index 05e8646..54e938e 100644
--- a/tests/fixtures/README.md
+++ b/tests/fixtures/README.md
@@ -2,8 +2,9 @@
 
 Sample projects for the CI of this repository. No other repository uses them.
 
-`.github/workflows/self-check.yml` calls `laravel-ci.yml` and `node-ci.yml` by
-local path, with `working-directory` set to a folder here. A pull request
+`.github/workflows/self-check.yml` calls `laravel-ci.yml`, `node-ci.yml` and
+`security.yml` by local path, with `working-directory` set to a folder here. It
+also runs the composite actions against these folders. A pull request
 therefore runs its own workflow changes against a real project before any
 caller receives them. actionlint checks the syntax. These runs catch the
 runtime errors that actionlint cannot see, such as wrong paths or a wrong step
@@ -12,7 +13,9 @@ order.
 | Folder | Contents | Smoke-test jobs |
 | --- | --- | --- |
 | `laravel/` | The `laravel/laravel` skeleton, with `pint.json` and `.nvmrc` added | `laravel-defaults`, `laravel-commands` |
-| `node/` | A project without dependencies, with `lint`, `type-check`, `test` and `build` scripts | `node-defaults`, `node-commands` |
+| `node/` | A project without dependencies, with `lint`, `type-check`, `test` and `build` scripts | `node-defaults`, `node-commands`, `security-actions` |
+| `dev-configs/` | A `.claude` hook script and editor settings | `security-actions` |
+| `security/` | `composer.lock` and `package-lock.json` without dependencies, a hardened `.npmrc`, and a Jinja `.env` template | `security-fixture` |
 
 ## Refresh the Laravel fixture
 
diff --git a/tests/fixtures/security/.env.example b/tests/fixtures/security/.env.example
new file mode 100644
index 0000000..616c8f7
--- /dev/null
+++ b/tests/fixtures/security/.env.example
@@ -0,0 +1,2 @@
+APP_NAME="Security fixture"
+APP_KEY=
diff --git a/tests/fixtures/security/.npmrc b/tests/fixtures/security/.npmrc
new file mode 100644
index 0000000..0a69032
--- /dev/null
+++ b/tests/fixtures/security/.npmrc
@@ -0,0 +1,3 @@
+engine-strict=true
+ignore-scripts=true
+min-release-age=7
diff --git a/tests/fixtures/security/composer.json b/tests/fixtures/security/composer.json
new file mode 100644
index 0000000..4920c75
--- /dev/null
+++ b/tests/fixtures/security/composer.json
@@ -0,0 +1,7 @@
+{
+    "name": "scify/security-fixture",
+    "description": "Fixture for the security workflow self-check",
+    "type": "project",
+    "license": "Apache-2.0",
+    "require": {}
+}
diff --git a/tests/fixtures/security/composer.lock b/tests/fixtures/security/composer.lock
new file mode 100644
index 0000000..7939c47
--- /dev/null
+++ b/tests/fixtures/security/composer.lock
@@ -0,0 +1,18 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "aa94b3b05483d6457b1c60388d6288fe",
+    "packages": [],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": {},
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": {},
+    "platform-dev": {},
+    "plugin-api-version": "2.9.0"
+}
diff --git a/tests/fixtures/security/deploy/.env.j2 b/tests/fixtures/security/deploy/.env.j2
new file mode 100644
index 0000000..bd1b508
--- /dev/null
+++ b/tests/fixtures/security/deploy/.env.j2
@@ -0,0 +1,4 @@
+APP_NAME="Security fixture"
+APP_ENV=production
+APP_KEY={{ app_key }}
+DB_PASSWORD={{ db_password }}
diff --git a/tests/fixtures/security/package-lock.json b/tests/fixtures/security/package-lock.json
new file mode 100644
index 0000000..1c52649
--- /dev/null
+++ b/tests/fixtures/security/package-lock.json
@@ -0,0 +1,10 @@
+{
+    "name": "scify-security-fixture",
+    "lockfileVersion": 3,
+    "requires": true,
+    "packages": {
+        "": {
+            "name": "scify-security-fixture"
+        }
+    }
+}
diff --git a/tests/fixtures/security/package.json b/tests/fixtures/security/package.json
new file mode 100644
index 0000000..28dd367
--- /dev/null
+++ b/tests/fixtures/security/package.json
@@ -0,0 +1,4 @@
+{
+    "name": "scify-security-fixture",
+    "private": true
+}