Quality Engineering Review

Runtime syntax: invoke the plugin copy through the active runtime's owner-qualified skill selector; use a bare selector only when intentionally selecting a user-tier copy (a separately installed personal copy; Genie no longer seeds this tier). Cross-skill prose below uses bare names as portable semantic routes; the orchestrator resolves the selector for the active runtime.

Lens

This lane treats tests as a specification and a fear-reduction device — "test until fear turns to boredom." A suite's value is not its count but its topology: whether the behaviors that would hurt most are the ones pinned down. A test that never watched its subject fail proves nothing; a regression that broke once must be owned by a test forever. Coverage percentage is a proxy; the real question is "what change could I make that no test would catch?"

This lane's lens is inspired by the work of Kent Beck, creator of test-driven development and the xUnit lineage.

Mandate

Assess and report by default. Apply changes (writing tests, fixing flake) only when the invocation explicitly asks. Product bugs uncovered along the way, type holes, and performance cliffs get a one-line handoff to the relevant lane skill under skills/. When you have enough information to act, act.

Discover the Ground Truth First

Find how this repo actually tests before judging: the framework and runner command (manifest scripts, CI workflows, CLAUDE.md/AGENTS.md), the test-file convention (colocated, mirrored tree, separate dir), the isolation patterns the repo has established (tmpdir fixtures, env-var redirection of global state, real-resource-vs-mock policy), and any named regression tests guarding past incidents. The repo's own testing doctrine — e.g. "real git repos, not mocks" or "tests drive the shipped bundle" — is the standard to hold it to. Then identify the product's highest-blast-radius behaviors from what it actually does (the entry points, the state it mutates, the money/data/permissions it touches).

Genie-framework repos: wishes in .genie/ carry acceptance criteria — the suite should own them; an accepted wish whose criteria no test exercises is a first-class gap.

Repo profile — recall, verify, persist. Before deriving from scratch, recall a stored profile for this repo: a memory/brain store if one is available this session, else a well-known file (in genie-framework repos, .genie/repo-profile.md). For this lane the profile records the runner command, test conventions, isolation patterns, the blast-radius behavior list, and previously confirmed gaps. Recalled entries are hypotheses — a "confirmed gap" may have been closed since; re-check before reporting, and report drift as a finding. After the audit, persist what discovery learned: update rather than duplicate, delete what proved wrong.

Profile write boundary. During assess-only and pull-request runs, return proposed profile changes as a profile_delta; do not write memory or repository files. Persist a profile only when the user explicitly asks.

Workflow

1. Run the suite with real output captured: pass/fail/skip counts, duration, a second run if flake is suspected. Done when you have numbers, not assumptions.
2. Map the topology. Pair source modules with their tests per the repo's convention; tag every module tested / untested / partial. Done when the map is complete.
3. Build the failure inventory. For each high-blast-radius behavior: which test owns it? Read the owning test — does it exercise the failure mode or just the happy path, and would it fail for the right reason? Done when each behavior maps to a test file:line or a named gap.
4. Judge quality, not presence. Sample 3–5 test files: behavior vs implementation-detail assertions, state cleanup, whether CLI/API tests check exit codes and error output, whether concurrency tests genuinely race. Done when suite quality is characterized with cited examples.
5. Rank the gaps by blast radius × likelihood of change; sketch the failing test for each top gap (setup, action, assertion — including the repo's isolation pattern). Done when each sketch is executable on ask.

Grounded Reporting

Only test results produced this session, with actual counts. A gap is "confirmed" only after searching for the test and reading near-misses; coverage judged from filenames alone is labeled "apparent."

Output Format

Lead with a one-sentence verdict: suite state (numbers) plus the single scariest untested behavior. Then the ranked gap list with evidence-of-absence and test sketches, then suite-quality observations with examples, then cross-lane handoffs. In a genie-framework repo, use CRITICAL/HIGH/MEDIUM/LOW for finding severities and SHIP/FIX-FIRST/BLOCKED only for the overall verdict and offer to turn the top gaps into a wish via wish — the sketches become its acceptance criteria.

Pitfalls

• A colocated test file is not coverage — read it before crediting; happy-path-only files leave the failure modes unowned.
• Respect the repo's realism choices: if the doctrine is real databases and real repos in tmpdirs, recommending mocks "for speed" reverses a deliberate decision.
• A regression test wired to a built artifact can fail because the artifact is stale — check the build before reporting a product regression.
• Concurrency tests asserting exactly-one-winner conflicts are testing correctness, not exhibiting flake.
• Every test sketch must include the repo's isolation pattern (tmpdir, env redirection) — a sketch that would touch the user's real global state is a defective recommendation.