chore(AGENTS.md): add RHDH domain context to AGENTS.md

[fullsend-ai-coder]

Summary

Populates three AGENTS.md sections with RHDH domain context that was missing, causing the review agent to miss design-level findings on feature PRs (observed on PR #176):

• Key Conventions: Added RHDH-to-Backstage version mapping semantics (3-tier resolution, backstage: prefix escape hatch, static matrix maintenance), offline vs air-gapped distinction (RHDH_OFFLINE skips GitHub metadata only; --manifest-file required for true air-gap), and the ExitCodeError testability pattern for plugin commands.
• Architecture: Added documentation for the version resolution engine (src/lib/rhdhVersion.ts) covering the 3-tier resolution strategy, caching semantics, and key files. Added check-versions command documentation covering dependency audit logic and status categories.
• Pattern References: Added references to check-versions/command.ts, rhdhVersion.ts, rhdhVersion.test.ts, and backstageVersion.ts.

All referenced file paths verified to exist. Content derived from reading the actual source code, not from issue claims alone.

Testing

• Verified all file paths referenced in AGENTS.md exist in the repository
• Prettier check passes on AGENTS.md
• No code changes — documentation only

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Closes #199

Post-script verification

• Branch is not main/master (agent/199-populate-agents-md-sections)
• Secret scan passed (gitleaks — c5be892f392caf7a7f8e2314022b667136b6e349..HEAD)
• PR body secret scan passed (gitleaks — no-git)

[fullsend-ai-review]

🤖 Finished Review · ✅ Success · Started 11:12 AM UTC · Completed 11:25 AM UTC

Commit: c5af5d5 · View workflow run →

Runtime: claude · Model: sonnet → claude-sonnet-4-6 · Effort: high · Cost: $2.32

[fullsend-ai-review]

Risk Assessment: moderate (2/5)

Details

Docs-only bot PR with clear acceptance criteria and small blast radius; score elevated slightly by active churn on a protected root-level agent-instruction file.

[fullsend-ai-review]

Review

Findings

High

• [convention-violation] AGENTS.md — The PR title docs(#199): add RHDH domain context to AGENTS.md places an issue reference (#199) in the scope position. The pr-semantic.yaml CI workflow's headerPattern scope group is [\w$.\-* ]*, which excludes #. This PR will fail CI. Notably, the newly added AGENTS.md content itself explicitly prohibits this ("no #, @, or other special characters" in scopes, with #187 cited as a forbidden example).
  Remediation: Retitle to docs: add RHDH domain context to AGENTS.md. Keep Closes #199 in the PR body.

Medium

• [algorithm-logic-consistency] AGENTS.md:45 — The Key Conventions bullet describes the 3-tier RHDH→Backstage resolution strategy as ending with (3) error if neither resolves. The Architecture section added in the same PR correctly defines tier 3 as the Backstage release manifest fetch (once a Backstage version is determined by tier 1 or 2). These two descriptions contradict each other: the Key Conventions conflates the error fallback (what happens when tiers 1 and 2 both fail) with an actual resolution tier.
  Remediation: Update the Key Conventions bullet to describe tier 3 as the Backstage release manifest fetch, consistent with the Architecture section. Add a separate sentence: "If neither tier 1 nor tier 2 resolves a Backstage version, an error is raised."

• [api-contract] AGENTS.md:50 — The Offline vs air-gapped bullet states `RHDH_OFFLINE=true` (or `--offline`) but no --offline CLI flag is registered anywhere in src/. Offline mode is only activatable via the RHDH_OFFLINE environment variable or the programmatic options.offline parameter. A developer following this documentation to add offline support would search for a flag that does not exist.
  Remediation: Remove (or --offline) from the bullet. Correct text: "RHDH_OFFLINE=true skips the GitHub metadata lookup (tier 1)..."

• [technical-accuracy] AGENTS.md:233 — The check-versions Architecture section describes command.test.ts as using `setupFetchMock` to mock both the RHDH metadata endpoint and the Backstage manifest endpoint. This is factually wrong. src/commands/check-versions/command.test.ts uses jest.mock('../../lib/rhdhVersion', ...) to stub resolveRhdhVersion at the module boundary — setupFetchMock does not appear in that file. The setupFetchMock helper is defined and used only in src/lib/rhdhVersion.test.ts.
  Remediation: Replace the command.test.ts description with: "command.test.ts — test patterns using jest.mock to stub resolveRhdhVersion at the module boundary, allowing unit tests of audit logic and CLI output without triggering any network calls."

• [protected-path] AGENTS.md — AGENTS.md is listed in the repository's protected paths. The PR links to issue Populate empty AGENTS.md sections with RHDH domain context and CLI patterns #199 and the description explains the rationale. Sufficient context is provided; however, human approval is required for protected-path changes regardless of context.

Low

• [code-organization] AGENTS.md:184 — The heading ### Version resolution engine does not follow the established Architecture subsection format. All sibling subsections use ### `<identifier>` — <noun phrase> (e.g., ### `plugin new` — scaffold command, ### `check-versions` — dependency alignment command). The sibling heading added in this same PR follows the pattern correctly; this one does not.
  Remediation: Rename to ### `rhdhVersion.ts` — version resolution engine or ### `resolveRhdhVersion` — version resolution engine.

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Labels: PR adds documentation content to AGENTS.md (agent instruction file)

---

Next steps:

• /fs-fix — agent addresses review findings automatically
• /fs-fix <your instruction> — agent fixes with your specific guidance
• Push commits directly — review re-runs automatically on push
• /fs-fix-stop — disable automatic fix runs for this PR

[fullsend-ai-review]

See the review comment for full details.

[gashcrumb]

/fs-fix can you address the review comments and rebase the PR branch?

[fullsend-ai-coder]

🤖 Finished Fix · ✅ Success · Started 12:40 PM UTC · Completed 12:47 PM UTC

Commit: c5af5d5 · View workflow run →

Runtime: claude · Model: opus → claude-opus-4-6 · Effort: high · Cost: $1.08

[fullsend-ai-coder]

🔧 Fix agent — iteration 1 (human-triggered)

Addressed all 4 actionable review findings on AGENTS.md: fixed 3-tier strategy description consistency, removed non-existent --offline flag reference, standardized heading format, and corrected test mocking description. Rebased branch onto main as requested. Two findings noted as non-actionable (PR title already fixed, protected-path is informational).

Fixed (4):

1. 3-tier strategy description inconsistency (algorithm-logic-consistency) (AGENTS.md): Updated Key Conventions bullet to describe tier 3 as Backstage release manifest fetch from versions.backstage.io, consistent with the Architecture section. Added separate sentence noting error when tiers 1 and 2 both fail.
2. Non-existent --offline CLI flag reference (api-contract) (AGENTS.md): Removed '(or --offline)' from the Offline vs air-gapped bullet since no --offline flag is registered in src/. Offline mode is only activatable via RHDH_OFFLINE env var.
3. Heading format inconsistency (code-organization) (AGENTS.md): Renamed '### Version resolution engine' to '### rhdhVersion.ts — version resolution engine' to match the established Architecture subsection format.
4. Incorrect test mocking description (technical-accuracy) (AGENTS.md): Replaced incorrect setupFetchMock reference in command.test.ts description with accurate jest.mock description. setupFetchMock only exists in rhdhVersion.test.ts.

Disagreed (2):

1. PR title convention violation (convention-violation): The PR title has already been updated to 'chore(AGENTS.md): add RHDH domain context to AGENTS.md' which uses a valid scope. The fix agent cannot modify PR titles — this is outside its scope.
2. Protected path requires human approval (protected-path): This is an informational finding, not an actionable code change. Human approval is required regardless of agent action — the human triggered this fix run.

Tests: passed

Decision points

• Rebased branch onto origin/main as requested by human instruction (alternatives: Skip rebase and only fix review comments, Rebase and fix as instructed; rationale: Human explicitly asked to rebase the PR branch; branch was 1 commit behind main.)

---

Next steps:

• /fs-review — request a re-review of the changes
• /fs-fix <your instruction> — run another fix pass with specific guidance
• Push commits directly — review re-runs automatically on push
  _{Updated by fullsend fix agent}

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud