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ci(requirements-sync): commit nightly migration straight to master - #884

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@SarahLittlejohn SarahLittlejohn commented Jul 27, 2026

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Why

Nightly sync PRs never merge. PR merges on this repo are blocked by a required-review
rule that the bot cannot satisfy and cannot bypass, and allow_auto_merge is false at
repo level, so gh pr merge --auto fails outright. Every night's PR piled up unmerged
and the requirements DB drifted anyway.

This changes the job to commit its migration directly to master, no PR.

⚠️ This PR does not work until a bypass is added

Direct pushes to master are also blocked — verified by an actual push:

remote: error: GH006: Protected branch update failed for refs/heads/master.
remote: - Changes must be made through a pull request.

For this to function, the HMCTSClaudeCode app (slug hmctsclaudecode, App ID
2670524) must be added to the ruleset bypass list with mode Always — "for pull
requests only" is not sufficient, it would not permit a push.

Note the app is shared with every job in claude.yml (@claude, @plan, @ready,
@analyse, @spec) via the same CLAUDE_CODE_APP_ID. A bypass is not scoped per
workflow, so all of those jobs gain unreviewed write access to master, not just
this one. That is a deliberate trade-off and should be reviewed as such.

What changes

Removing the review gate makes the pre-push checks the only protection for master, so
the job is restructured around that:

  • Claude no longer touches git. It writes the migration and stops. Bash(git:*) and
    Bash(gh:*) are dropped from allowedTools in favour of git status/git diff/gh api, so it cannot push even if the prompt is misread.
  • New Commit migration to master step runs after the existing independent build &
    integrity gate, with no if: — it inherits success() and is skipped whenever Claude
    or the gate failed. A bad migration now stops before it lands rather than landing and
    then going red.
  • Re-verifies after rebasing. The step re-fetches master, rebases, then re-runs
    build + integrity_check + foreign_key_check again before pushing. A migration can
    be valid alone but collide with one that landed during the ~30 minute run — the
    duplicate-id failure seen in chore(requirements): sync with GitHub Project #43 (2026-07-22) #869/chore(requirements): sync 5 new requirements 2026-07-23 #873. No force-push; on conflict it fails and leaves
    master untouched.
  • Only requirements/migrations/ is staged. requirements/requirements.db is
    gitignored but still tracked (committed in 78ce5927, before the ignore rule), so
    every build dirties it. The step discards that churn, which also keeps the tree clean
    enough for the rebase to run.
  • pull-requests permission dropped to read (still needed to derive impl_commit_sha /
    impl_paths from merged closing PRs).
  • Header comment rewritten: it previously promised "Nothing is committed to the source of
    truth without that review", which is now the opposite of what happens.

Verification

Rehearsed against throwaway repos reproducing the tracked-.db setup:

Case Result
No drift, no migration written commits nothing, exits 0
Happy path, master moved mid-run rebases over the concurrent migration, pushes only the .sql
Migration that collides only after rebase caught post-rebase, master left unchanged

The gate's failure mode was checked via script files rather than inline subshells (set -e does not fire in the latter under this shell), confirming exit 1 on a bad migration.

Known limitation

The gate catches SQL that will not build or that breaks integrity. It cannot catch a
migration that is structurally valid but semantically wrong. With no PR on this path the
run log is the only audit record, so the prompt now requires a complete delta summary on
stdout.

🤖 Generated with Claude Code

Summary by CodeRabbit

  • Chores
    • Automated requirements updates are now validated with build, integrity and foreign-key checks before publication.
    • Updates are applied more reliably through controlled commits and retry handling.
    • Failed validation prevents an update from being published, reducing the risk of invalid requirements data.

Nightly sync PRs never merged. PR merges on this repo are blocked by an
org-level required-review ruleset on hmcts that the bot cannot satisfy and
cannot bypass (allow_auto_merge is also false at repo level, and no one on the
team holds the admin rights to change either). So every night's PR just piled
up unmerged and the requirements DB drifted regardless.

Direct pushes to master are not gated by that ruleset — there is no classic
branch protection and no repo ruleset, and GET /repos/.../rules/branches/master
returns []. So the job now commits the migration directly instead.

That removes the review gate, which means the pre-push checks are now the only
thing protecting master. Restructured accordingly:

- Claude no longer commits, branches, pushes or opens a PR. It writes the
  migration and stops. Its allowedTools lose Bash(git:*) and Bash(gh:*) in
  favour of git status/diff and gh api, so it cannot push even if the prompt
  is misread.
- A new "Commit migration to master" step runs AFTER the existing independent
  build & integrity gate, and has no `if:` — so it inherits success() and is
  skipped whenever Claude or the gate failed. A bad migration now stops before
  it lands, rather than landing and then going red.
- The step re-fetches master, rebases, and re-runs build + integrity_check +
  foreign_key_check *after* the rebase before pushing. A migration can be valid
  alone but collide with one that landed during the ~30 minute run — that is
  the duplicate-id class of failure seen in #869/#873. No force-push; on
  conflict it fails and leaves master untouched.
- Only requirements/migrations/ is staged. requirements/requirements.db is
  gitignored but still tracked from before that rule, so every build dirties
  it; the step discards that churn, which also keeps the tree clean enough for
  the rebase to run.
- pull-requests permission dropped to read (still needed to derive
  impl_commit_sha / impl_paths from merged closing PRs).

Verified locally against throwaway repos reproducing the tracked-.db setup:
no-drift run commits nothing; happy path rebases over a concurrent migration
and pushes only the migration file; and a migration that collides only after
rebasing is caught post-rebase and master is left unchanged.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
@coderabbitai

coderabbitai Bot commented Jul 27, 2026

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Review Change Stack

📝 Walkthrough

Walkthrough

The requirements sync workflow now leaves validated migrations for a dedicated commit step, then rebases, revalidates, and directly pushes to master with restricted pull-request permissions and bounded non-force retries.

Changes

Requirements migration synchronisation

Layer / File(s) Summary
Migration generation and validation
.github/workflows/requirements-sync.yml
The workflow removes PR creation instructions, has Claude build and verify migrations before leaving them uncommitted, changes pull-request permission to read, and documents the pre-push integrity gate.
Direct master commit and push
.github/workflows/requirements-sync.yml
A dedicated step stages only migrations, discards tracked database artefact churn, commits the changes, rebases onto origin/master, reruns integrity and foreign-key checks, and retries non-force pushes up to three times.

Sequence Diagram(s)

sequenceDiagram
  participant Workflow
  participant Claude
  participant IntegrityChecks
  participant GitRemote
  Workflow->>Claude: Generate migration
  Claude->>IntegrityChecks: Build and verify migration
  Claude-->>Workflow: Leave migration uncommitted
  Workflow->>Workflow: Stage and commit migrations
  Workflow->>GitRemote: Rebase onto latest master
  Workflow->>IntegrityChecks: Re-run checks
  Workflow->>GitRemote: Push commit without force
Loading
🚥 Pre-merge checks | ✅ 5
✅ Passed checks (5 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title clearly summarises the main change: the nightly requirements sync now commits migrations directly to master.
Docstring Coverage ✅ Passed No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check ✅ Passed Check skipped because no linked issues were found for this pull request.
✨ Finishing Touches
🧪 Generate unit tests (beta)
  • Create PR with unit tests
  • Commit unit tests in branch ci/requirements-sync-direct-push

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🎭 Playwright E2E Test Results

82 tests   52 ✅  3m 50s ⏱️
31 suites  30 💤
 1 files     0 ❌

Results for commit 945160d.

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Actionable comments posted: 2

🧹 Nitpick comments (1)
.github/workflows/requirements-sync.yml (1)

269-305: 🧹 Nitpick | 🔵 Trivial

Solid rebase/re-verify/retry loop, no force-push.

Good defensive design overall: re-fetch, discard build-artefact churn, rebase, re-run integrity/FK checks, and only then push, capped at 3 non-force attempts.

One operational thought: this relies on the retry loop alone to handle concurrent runs of this nightly job. If the schedule trigger can ever overlap (e.g., manual re-run while the nightly cron is still executing), a concurrency: group on the workflow would avoid two jobs racing to push and burning through retries unnecessarily — worth confirming this is already covered elsewhere in the workflow (not shown in this diff).


ℹ️ Review info
⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: f13b0799-be5b-45e3-81c6-cc27de2b62b8

📥 Commits

Reviewing files that changed from the base of the PR and between 9cb26c0 and 945160d.

📒 Files selected for processing (1)
  • .github/workflows/requirements-sync.yml

Comment on lines 203 to +206
claude_args: |
--dangerously-skip-permissions
--append-system-prompt "You are running in a scheduled GitHub Action to sync the requirements database. Read @CLAUDE.md and the requirements/ SQL files. Be precise: this is an append-only audit log. If there is no drift, do nothing and open no PR. Never hard-delete or down-status a requirement."
--allowedTools "Read,Glob,Grep,Write,Edit,Bash(corepack:*),Bash(yarn:*),Bash(git:*),Bash(gh:*),Bash(sqlite3:*),Bash(./requirements/scripts/new_migration.sh:*)"
--append-system-prompt "You are running in a scheduled GitHub Action to sync the requirements database. Read @CLAUDE.md and the requirements/ SQL files. Be precise: this is an append-only audit log. If there is no drift, do nothing and write no migration. Never hard-delete or down-status a requirement. You do not commit or push: leave the migration file uncommitted in the working tree and a later workflow step verifies and commits it."
--allowedTools "Read,Glob,Grep,Write,Edit,Bash(corepack:*),Bash(yarn:*),Bash(git status:*),Bash(git diff:*),Bash(gh api:*),Bash(sqlite3:*),Bash(./requirements/scripts/new_migration.sh:*)"

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🔒 Security & Privacy | 🔴 Critical | ⚡ Quick win

🧩 Analysis chain

🌐 Web query:

claude code CLI --dangerously-skip-permissions ignores --allowedTools restriction documented behavior

💡 Result:

In the Claude Code CLI, the flag --dangerously-skip-permissions (and its equivalent, --permission-mode bypassPermissions) effectively bypasses the permission prompt system entirely [1][2][3]. Users and security researchers have reported that when these bypass flags are active, the --allowedTools restriction is not enforced, meaning the model can execute tools not included in the allowed list [4][5]. Although the official CLI documentation lists --allowedTools as a mechanism to specify tools that execute without prompting [1][6], it does not explicitly state that this restriction is guaranteed to be enforced when permission bypass flags are engaged. In practice, this creates a behavior where the bypass mode overrides the tool allow-listing, rendering --allowedTools ineffective at restricting tool access in those sessions [4][5]. Consequently, using --dangerously-skip-permissions is considered a high-risk configuration that removes the safety layer provided by tool restrictions [7][2][8]. Some users have suggested using --disallowedTools as a potential alternative for restricting specific actions in bypass mode, though this is also subject to the limitations of the bypass configuration [9].

Citations:


🏁 Script executed:

#!/bin/bash
set -euo pipefail

echo "== workflow excerpt =="
sed -n '180,215p' .github/workflows/requirements-sync.yml || true

echo
echo "== action/version references =="
rg -n "claude-code|dangerously-skip-permissions|allowedTools|permissions|GITHUB_TOKEN|claude_args" .github/workflows . || true

echo
echo "== package/action manifests with version context =="
for f in $(git ls-files | rg '(^|/)(package\.json|pnpm-lock\.yaml|yarn\.lock|package-lock\.json|Dockerfile|actions/.*\.ya?ml)$'); do
  if rg -q "claude" "$f"; then
    echo "--- $f"
    rg -n -C 2 "claude" "$f" || true
  fi
done

Repository: hmcts/cath-service

Length of output: 13645


🏁 Script executed:

#!/bin/bash
set -euo pipefail

echo "== workflow permissions and token handling =="
sed -n '1,110p' .github/workflows/requirements-sync.yml
echo
echo "== workflow commit/push steps =="
sed -n '215,270p' .github/workflows/requirements-sync.yml || true
echo
echo "== CLI/dependency lockfiles with claude references =="
for f in pnpm-lock.yaml yarn.lock package-lock.json package.json; do
  if [ -f "$f" ]; then
    echo "--- $f"
    rg -n -C 3 "claude|node-version|npm_node_execpath|Claude Code" "$f" || true
  fi
done

echo
echo "== GitHub Actions workflow files using claude-code-action =="
for wf in .github/workflows/*.yml .github/workflows/*.yaml; do
  if [ -f "$wf" ] && rg -q "anthropics/claude-code-action@v1|dangerously-skip-permissions" "$wf"; then
    echo "--- $wf"
    rg -n -C 2 "anthropics/claude-code-action@v1|dangerously-skip-permissions|allowedTools|disallowedTools" "$wf" || true
  fi
done

Repository: hmcts/cath-service

Length of output: 12841


🌐 Web query:

Claude Code CLI --disallowedTools bypassPermissions --dangerously-skip-permissions documentation

💡 Result:

The --dangerously-skip-permissions flag in the Claude Code CLI is used to disable interactive permission prompts, allowing the agent to execute actions such as shell commands, file edits, and tool calls automatically without pausing for user approval [1][2]. Key points regarding this flag: Functionality: Setting this flag is equivalent to launching the CLI with --permission-mode bypassPermissions [3][4][5]. When active, Claude Code skips the evaluation layer that normally requires user confirmation for most tool uses [1]. Safety and Limitations: - Circuit Breakers: Despite the bypass, certain operations still trigger prompts as a safety measure, including removals that target the filesystem root or home directory (e.g., rm -rf / or rm -rf ~) [6][1]. - Security Restrictions: For security reasons, the flag cannot be used when running Claude Code with root or sudo privileges [4][7]. - Tool Constraints: Notably, when bypass mode is active, established tool restrictions—such as --allowedTools or --disallowedTools—may be ignored, meaning the model can potentially access and use tools that would otherwise be restricted [8]. Alternatives: Because of the risks involved, Anthropic recommends using it only in isolated environments like containers or VMs [6][9]. For scenarios where you want to reduce prompt fatigue without fully disabling safety checks, the official "auto" permission mode is recommended, as it uses a model-based classifier to approve routine actions while still flagging potentially unsafe ones [10][1][7]. Configuration: - Mode Toggling: You can use --allow-dangerously-skip-permissions to add the bypass mode to the Shift+Tab cycle, allowing you to switch into it mid-session without needing to restart [3][5]. - Prevention: To prevent the use of this mode in managed or team environments, administrators can set permissions.disableBypassPermissionsMode to "disable" in settings files [6][9]. Top results: [3][6][8][4][1][5]

Citations:


🌐 Web query:

Claude Code GitHub issue #50303 --allowedTools ignored --dangerously-skip-permissions --permission-mode bypassPermissions

💡 Result:

GitHub issue #50303 in the anthropics/claude-code repository documents a confirmed bug where the --allowedTools flag is ignored when using permission bypass flags, specifically --dangerously-skip-permissions or --permission-mode bypassPermissions [1]. Official documentation clarifies that this behavior is by design regarding the operation of bypass modes [2][3][4]. When permission mode is set to bypassPermissions, the system automatically approves every tool call that reaches the permission evaluation step, regardless of whether that tool is listed in an allowlist like --allowedTools [2]. In this mode, --allowedTools only serves to pre-approve listed tools, while unlisted tools fall through to the bypass mechanism and are subsequently approved [2]. The issue was closed as not_planned by automation [1]. If restrictive control over specific tools is required while operating in a headless or non-interactive environment, documentation suggests using --disallowedTools (blacklist) instead of --allowedTools (whitelist) [2], or utilizing the Agent SDK's canUseTool callback, which remains effective even when bypassPermissions is enabled [5]. Additional security measures include using managed settings to disable bypass modes entirely across an organization by setting permissions.disableBypassPermissionsMode to disable [3][4].

Citations:


Do not rely on --allowedTools to block git/gh write commands in bypass mode.

With --dangerously-skip-permissions, tool restrictions can be bypassed, so this job is still configured to commit uncommitted Claude output and the token remains available for git commit/git push. Remove the auto-commit from this workflow or make Claude output in an isolated location without commit privileges, then keep the commit step strictly in a separate step that does not pass Claude/GitHub token access, even as a fallback if Claude writes outside requirements/migrations.

Comment on lines +240 to +259
if [ -z "$(git status --porcelain -- requirements/migrations)" ]; then
echo "No migration written — nothing to commit. This is the normal no-drift outcome."
exit 0
fi

# requirements/requirements.db is listed in .gitignore but was committed before that
# rule existed, so it is still TRACKED and every `yarn requirements:build` shows it as
# modified. Discard that churn: it is a build artefact, it must not ride along in this
# commit, and leaving the tree dirty would make the rebase below refuse to run.
git checkout -- requirements/requirements.db 2>/dev/null || true

stray=$(git status --porcelain | grep -v ' requirements/migrations/' || true)
if [ -n "$stray" ]; then
echo "::warning::ignoring unexpected working-tree changes outside requirements/migrations/:"
echo "$stray"
fi

git add -- requirements/migrations
git status --porcelain -- requirements/migrations

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🩺 Stability & Availability | 🟠 Major | ⚡ Quick win

Stray working-tree changes are warned about but not discarded, and can abort the rebase.

Line 248's own comment explains that requirements/requirements.db churn must be discarded because "leaving the tree dirty would make the rebase below refuse to run." That reasoning applies equally to any other unexpected stray change, but the stray check at Lines 251-255 only prints a warning — it never discards, stashes, or fails on those changes. If anything outside requirements/migrations/ is left modified (build tooling side effect, cache file, etc.), git rebase origin/master at Line 280 will still find a dirty working tree and abort, defeating the purpose of surfacing the warning here rather than letting the job fail with a confusing generic rebase error later.

Either fail fast when stray is non-empty, or discard/stash those changes the same way the db artefact is handled before entering the rebase loop.

♻️ Suggested fix
           stray=$(git status --porcelain | grep -v ' requirements/migrations/' || true)
           if [ -n "$stray" ]; then
-            echo "::warning::ignoring unexpected working-tree changes outside requirements/migrations/:"
-            echo "$stray"
+            echo "::error::unexpected working-tree changes outside requirements/migrations/ — refusing to commit:"
+            echo "$stray"
+            exit 1
           fi
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
if [ -z "$(git status --porcelain -- requirements/migrations)" ]; then
echo "No migration written — nothing to commit. This is the normal no-drift outcome."
exit 0
fi
# requirements/requirements.db is listed in .gitignore but was committed before that
# rule existed, so it is still TRACKED and every `yarn requirements:build` shows it as
# modified. Discard that churn: it is a build artefact, it must not ride along in this
# commit, and leaving the tree dirty would make the rebase below refuse to run.
git checkout -- requirements/requirements.db 2>/dev/null || true
stray=$(git status --porcelain | grep -v ' requirements/migrations/' || true)
if [ -n "$stray" ]; then
echo "::warning::ignoring unexpected working-tree changes outside requirements/migrations/:"
echo "$stray"
fi
git add -- requirements/migrations
git status --porcelain -- requirements/migrations
if [ -z "$(git status --porcelain -- requirements/migrations)" ]; then
echo "No migration written — nothing to commit. This is the normal no-drift outcome."
exit 0
fi
# requirements/requirements.db is listed in .gitignore but was committed before that
# rule existed, so it is still TRACKED and every `yarn requirements:build` shows it as
# modified. Discard that churn: it is a build artefact, it must not ride along in this
# commit, and leaving the tree dirty would make the rebase below refuse to run.
git checkout -- requirements/requirements.db 2>/dev/null || true
stray=$(git status --porcelain | grep -v ' requirements/migrations/' || true)
if [ -n "$stray" ]; then
echo "::error::unexpected working-tree changes outside requirements/migrations/ — refusing to commit:"
echo "$stray"
exit 1
fi
git add -- requirements/migrations
git status --porcelain -- requirements/migrations

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