fix(ci): repoint codeql-action at a SHA that exists (#16)

`github/codeql-action@29b1f65c1f735799893313399435a59f54045865` is
pinned here but **exists in no repository** — the GitHub API returns 422
for it.

CodeQL therefore could not start: the run graph fails to build and the
job reports `startup_failure`, so this repository has had **no CodeQL
scanning at all**.

Repointed at `4187e74d05793876e9989daffde9c3e66b4acd07`, which is what
the `v3` tag currently resolves to (v3.37.3), verified against the API.

Found while auditing the estate: the same non-existent SHA was pinned in
**104 repositories**, so CodeQL was dead across nearly all of them.

---------

Signed-off-by: Jonathan D.A. Jewell <6759885+hyperpolymath@users.noreply.github.com>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

Author: hyperpolymath

.github/dependabot.yml

@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: MPL-2.0
+# Dependabot configuration for RSR-compliant repositories
+# Covers common ecosystems - remove unused ones for your project
+
+version: 2
+updates:
+  # GitHub Actions - always include
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    groups:
+      actions:
+        patterns:
+          - "*"
+
+  # Rust/Cargo
+  - package-ecosystem: "cargo"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    # `open-pull-requests-limit: 0` suppresses routine version-update PRs
+    # while leaving Dependabot SECURITY PRs flowing. The previous
+    # `ignore: "*" patch` rule also silenced security PRs under GitHub\'s
+    # current Dependabot behaviour. See rsr-template-repo commit 78b050e
+    # and 007-lang/audits/audit-dependabot-automation-gap-2026-04-17.md.
+    open-pull-requests-limit: 0
+
+  # Elixir/Mix
+  - package-ecosystem: "mix"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+
+  # Node.js/npm
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+
+  # Python/pip
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+
+  # Nix flakes
+  - package-ecosystem: "nix"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/casket-pages.yml

@@ -5,6 +5,7 @@ on:
     branches: [main, master]
   workflow_dispatch:
 permissions:
+  actions: read
   contents: read
   pages: write
   id-token: write

.github/workflows/codeql.yml

@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: MPL-2.0
+name: CodeQL
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  schedule:
+    - cron: '0 0 * * 0'
+
+permissions:
+  actions: read
+  contents: read
+  security-events: write
+
+jobs:
+  analyze:
+    name: CodeQL Analysis
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - language: actions
+            build-mode: none
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@4187e74d05793876e9989daffde9c3e66b4acd07 # v3
+        with:
+          languages: ${{ matrix.language }}
+          build-mode: ${{ matrix.build-mode }}
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@4187e74d05793876e9989daffde9c3e66b4acd07 # v3
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@4187e74d05793876e9989daffde9c3e66b4acd07 # v3

.github/workflows/governance.yml

@@ -9,6 +9,7 @@ on:
   workflow_dispatch:
 
 permissions:
+  actions: read
   contents: read
 
 jobs:

.github/workflows/hypatia-scan.yml

@@ -11,6 +11,7 @@ on:
   workflow_dispatch:
 
 permissions:
+  actions: read
   contents: read
   security-events: write
 

.github/workflows/push-email-notify.yml

@@ -7,6 +7,7 @@ name: Push email notification
 on:
   push: {}
 permissions:
+  actions: read
   contents: read
 jobs:
   notify:

.github/workflows/secret-scanner.yml

@@ -11,6 +11,7 @@ concurrency:
   cancel-in-progress: true
 
 permissions:
+  actions: read
   contents: read
 
 jobs:

.github/workflows/workflow-linter.yml

@@ -11,6 +11,7 @@ on:
       - '.github/workflows/**'
 
 permissions: read-all
+  actions: read
 
 jobs:
   lint-workflows: