chore(ci): remove Dependabot, add Claude + Copilot code review

.github/workflows/claude-code-review.yml

@@ -0,0 +1,132 @@
+# Claude code review.
+#
+# This complements — it does not replace — the automatic Copilot review that
+# runs on every PR via the "Code Quality Copilot review for default branch"
+# ruleset. Copilot does the fast first pass; Claude does the deeper one, and
+# only when asked, so routine PRs cost nothing.
+#
+# Two ways in:
+#   1. Mention @claude in an issue, a PR comment, or a review comment.
+#   2. Add the `deep-review` label to a PR for a full review pass.
+#
+# Requires an ANTHROPIC_API_KEY secret (org-level is easiest — one secret
+# covers every repo). Without it both jobs fail fast with a clear message
+# rather than reviewing silently with no credentials.
+name: Claude Code Review
+
+on:
+  issue_comment:
+    types: [created]
+  pull_request_review_comment:
+    types: [created]
+  pull_request_review:
+    types: [submitted]
+  issues:
+    types: [opened, assigned, labeled]
+  pull_request:
+    types: [labeled]
+
+# Never run two reviews on the same PR at once; a new trigger supersedes the
+# one in flight.
+concurrency:
+  group: claude-review-${{ github.event.pull_request.number || github.event.issue.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  # ── 1. On-demand: someone wrote @claude ──────────────────────────────────
+  mention:
+    if: |
+      github.event_name != 'pull_request' && (
+        (github.event_name == 'issue_comment' && contains(github.event.comment.body, '@claude')) ||
+        (github.event_name == 'pull_request_review_comment' && contains(github.event.comment.body, '@claude')) ||
+        (github.event_name == 'pull_request_review' && contains(github.event.review.body, '@claude')) ||
+        (github.event_name == 'issues' && (contains(github.event.issue.body, '@claude') || contains(github.event.issue.title, '@claude')))
+      )
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    permissions:
+      contents: read
+      pull-requests: write
+      issues: write
+      id-token: write
+    steps:
+      - name: Check credentials
+        env:
+          KEY: ${{ secrets.ANTHROPIC_API_KEY }}
+        run: |
+          if [ -z "$KEY" ]; then
+            echo "::error::ANTHROPIC_API_KEY is not set. Add it as an organisation or repository secret."
+            exit 1
+          fi
+
+      - uses: actions/checkout@v6
+        with:
+          fetch-depth: 1
+
+      - uses: anthropics/claude-code-action@v1
+        with:
+          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          use_sticky_comment: true
+
+  # ── 2. Full pass: PR labelled `deep-review` ──────────────────────────────
+  deep-review:
+    if: github.event_name == 'pull_request' && github.event.label.name == 'deep-review'
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    permissions:
+      contents: read
+      pull-requests: write
+      id-token: write
+    steps:
+      - name: Check credentials
+        env:
+          KEY: ${{ secrets.ANTHROPIC_API_KEY }}
+        run: |
+          if [ -z "$KEY" ]; then
+            echo "::error::ANTHROPIC_API_KEY is not set. Add it as an organisation or repository secret."
+            exit 1
+          fi
+
+      - uses: actions/checkout@v6
+        with:
+          fetch-depth: 1
+
+      - uses: anthropics/claude-code-action@v1
+        with:
+          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          use_sticky_comment: true
+          prompt: |
+            REPO: ${{ github.repository }}
+            PR NUMBER: ${{ github.event.pull_request.number }}
+
+            Review this pull request. The PR branch is already checked out in
+            the working directory.
+
+            This repository follows the standards in its own CLAUDE.md,
+            QUALITY.md, TESTING.md, SECURITY.md and VERIFY.md — read the ones
+            that apply to the changed files and review against them, not
+            against generic style preferences.
+
+            Prioritise, in this order:
+              1. Correctness — logic errors, unhandled failure paths, integer
+                 overflow/underflow, memory safety, race conditions.
+              2. Security — unvalidated input crossing a boundary, injection,
+                 authorization that checks only authentication, secrets in
+                 source or logs.
+              3. Tests — does a new behaviour have a test that would actually
+                 fail without the fix? Flag assertions that cannot fail, and
+                 tests that only check the negative case.
+              4. Maintainability — only where it genuinely impedes a reader.
+
+            Report what you verified and what you could not. Say plainly when
+            a concern is unverified rather than implying you checked it. If
+            nothing needs changing, say so in one line — do not manufacture
+            findings.
+
+            Use `gh pr comment` for top-level feedback.
+            Use `mcp__github_inline_comment__create_inline_comment` (with
+            `confirmed: true`) for specific lines.
+            Only post GitHub comments — do not return review text as a message.
+
+          claude_args: |
+            --allowedTools "mcp__github_inline_comment__create_inline_comment,Bash(gh pr comment:*),Bash(gh pr diff:*),Bash(gh pr view:*),Bash(gh pr checks:*)"