4 Commits

Author SHA1 Message Date
Michał Pierzchała 423927fdd8 chore(mutation): shrink to report-only — drop the ratchet, baseline and graduation (#1457, #1781) (#1828)
* chore(mutation): shrink the lane to report-only (#1457, #1781 wave 2)

The mutation harness's two real catches (#1474, #1475) both came from humans
reading the weekly score report. The ratchet half never operated: the baseline
was committed exactly twice (8cce0ef6b, 60400d04b), both times with
`stableRuns: 0, gating: false`, and was never updated after the very fixes it
triggered — the weekly job computed a new baseline and then `git checkout --`d
it, uploading a proposal nobody applied in 3+ weeks. A gate nobody arms is
harness weight; the report is the part that paid.

Deletes ratchet.ts + ratchet.test.ts, mutation-baselines/, and every
baseline/graduation/gating path in run.ts (`--update`, `mutation:baseline`).
run.ts now exits non-zero only on a harness failure, never on a score. The
report renders the per-kernel table (kernel, score, killed, survived, total,
timeouts) plus the surviving mutants a strengthening PR works from.

Kernel scoping stays: stryker.config.json and KERNEL_MODULES are untouched.

* fix(mutation): restore denominator coverage and publish the table before judging the shard set

Review of #1828:
- `report.test.ts` re-asserts that Ignored/CompileError/RuntimeError leave the
  denominator — the one behaviour `ratchet.test.ts` covered and nothing replaced.
  A `tally()` edit that counted tool noise would have deflated every published
  score with a green `mutation:test`.
- `assertShardsCoverModules` now runs after `emit()`, so an incomplete shard set
  still publishes the kernels that completed instead of only an error string.
  This makes the workflow comments' claim about the job summary true rather than
  re-wording them down.

* chore(mutation): trigger the affected lane on exactly the paths that can select mutants

The PR lane returns an empty matrix unless the diff touches the harness, so the
kernel-source and `**/*.test.ts` triggers only bought a 1-4 min no-op job on
~96% of PRs. `on.pull_request.paths` is now exactly `LANE_TOOLING` plus the
workflow file, asserted in both directions by workflow.test.ts against the
exported constant — a missing path would let a harness change merge unproven,
an extra one starts a job that can only answer `[]`.

Also drops the workflow header's contradictory scope paragraph: it claimed the
lane selects on kernel sources and any test reaching one, which has not been
true since the ratchet went.

* fix(mutation): score and publish a short shard set before failing on the count

The expected-count check ran inside readShardedReports, before anything was
summarized, so on the weekly's real `--expect-shards 10` one dead shard threw
away the nine that had reported — the earlier reorder only moved the
zero-mutants check. The merge now returns the shard count, and both verdicts
run after emit() with the same exit code and `score` stage.

Regression uses the weekly argument shape (`--expect-shards 10`, one shard
present) and asserts the reporting kernel's row reaches stdout while the run
still fails.
2026-08-18 17:47:29 +02:00
Michał Pierzchała 60400d04b7 feat(mutation): add target-annotation-serde + snapshot-occlusion kernels (#1553)
* feat(mutation): add target-annotation-serde + snapshot-occlusion kernels

Both are pure decision kernels the lane's own membership rule covers
(target-annotation-serde: parse/validate/normalize the .ad comment-line
codec, zero I/O; snapshot-occlusion: pure covered/not-covered decision
where a wrong answer silently blocks or mis-allows a tap) but were
excluded from KERNEL_MODULES.

Fixing the harness's packages/*/src blind spot was required, not
optional: test-scope.ts, ownership.ts, and vitest.mutation.config.ts
all hardcoded `src/` as the only place a kernel's tests could live.
target-annotation-serde's own tests live under
packages/ad-script/src/internal/__tests__/, so without this fix the
module would score 0% from day one — not from weak tests, but because
its test file was silently invisible to the lane. Widened the same
three places, plus mutation-affected.yml's path filter and
isTestFile/ownedTestFiles in ownership.ts, to also recognize
packages/*/src/**/*.test.ts (mirroring vitest.config.ts's own
unit-core project include list).

Triaged every surviving mutant from the initial run: real coverage
gaps got a new/adjusted test (kill-with-test), everything else is
documented equivalent with an inline comment at the mutation site
explaining the invariant that makes it unobservable (redundant
early-returns, JSON.stringify dropping undefined-valued keys,
Number.isFinite/isSafeInteger's total-function safety, caller-enforced
positiveRect/candidate invariants, etc). Baseline recorded from the
actual measured run, not inherited or guessed: 94.03% (315/335) and
89.74% (175/195).

* style: run the formatter over the four files the gate flagged
2026-08-02 11:36:43 +02:00
Michał Pierzchała 76453add71 refactor: pnpm workspace + @agent-device/kernel pilot (#1490 W0) (#1494)
* refactor: pnpm workspace + @agent-device/kernel pilot (#1490 W0)

Extend the workspace with packages/* and move the kernel behind an
enforced public API: packages/kernel with nine consumer-earned subpath
exports (errors, device, snapshot, contracts, collections, rect,
redaction, daemon-error, bounds — the last absorbed from utils as Rect
vocabulary). Every kernel import repo-wide becomes the
@agent-device/kernel/<sub> specifier; kernel tests move to
src/__tests__/kernel/ and exercise the package surface. The root
declares the package in devDependencies (workspace:*), tsdown bundles
it (noExternal) so the published artifact and its runtime dependency
manifest are unchanged.

Gate rewiring in the same change, per the W0 brief:
- R1 kernel-sink retires (physically subsumed); new R11
  package-boundaries guards no-root-back-imports, relative tunnelling
  past exports maps, undeclared workspace deps, and non-exported
  subpaths, with runtime resolution pins via import.meta.resolve.
- resolveImportEdges and mutation ownership follow workspace
  specifiers through exports maps, keeping R4 cycle checks, depgraph,
  and derived test ownership connected across the seam (kernel-errors
  still owns 495 tests). listSourceFiles includes packages/*/src.
- kernel becomes an unranked zone; mutation registry, stryker mutate
  globs, and the mutation-affected workflow path filter move to
  packages/kernel/src/errors.ts.
- check:affected gains packages/ ownership (manifests fail open);
  vitest and coverage include packages/*/src; fallow ignores
  packages/** (its resolver cannot follow workspace specifiers).
- The affected-selector CI job installs dependencies: its closure now
  crosses workspace specifiers, and the R8 relative exception is
  unsafe for production src files (Node ESM does not realpath, so dual
  specifier/relative loads would instantiate modules twice). The R8
  zero-dep set is pinned empty with that rationale.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FUv7bvbWNryuXgSBuqTtep

* fix: address W0 review — mutation sandbox, exports-map resolution, tsc -b

Review findings on #1494, all five:

1. contracts-schema-public.test.ts reads the kernel source at its
   packages/ path (fs access invisible to the codemod and typecheck).
2. Mutation lane: Stryker sandboxes the tree but pnpm's node_modules
   symlink resolves @agent-device/* back to the real repo, so mutants
   in the sandbox never load and vitest.related finds no tests.
   vitest.mutation.config.ts now aliases each EXPORTED specifier to
   its source (derived from exports maps, never a wildcard), keeping
   resolution inside the mutated tree. Validated: kernel-errors module
   runs end to end (dry run 3,984 tests, mutants killed, exit 0).
3. Layering/depgraph resolve workspace specifiers through the
   exports-derived map (workspaceSpecifierTargets) instead of
   reconstructing paths, so '.'-facade packages resolve; the
   positional fallback remains only for map-less fixtures (P0 pin).
4. Per-package project references implemented: packages/kernel is
   composite (emitDeclarationOnly -> dist-types, gitignored), the root
   references it, and typecheck becomes tsc -b — probed to catch type
   errors on both sides under TypeScript 7 native.
5. R11's relative-route exception now requires membership in an actual
   R8 zero-dep job closure (zeroDepClosureFiles walks entries), not
   mere scripts/ placement — closing the dual-instantiation bypass.

Also from review discussion: daemon-error moves out of the kernel
package to src/client/ — its consumers (cli, client facade) rehydrate
wire DaemonErrors client-side; the daemon only produces them. Kernel
drops to 8 exported subpaths before any of them ship.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FUv7bvbWNryuXgSBuqTtep

* refactor: one exports-map reader for mutation alias and ownership

Fallow flagged workspaceExportAliases (cognitive 15, CRAP 90). The
manifest-reading logic already exists as workspaceSpecifierTargets in
scripts/layering/package-boundaries.ts, so both the Stryker sandbox
alias table and the mutation ownership walker now consume it instead
of carrying near-clones. Behavior unchanged; mutation suite 45/45 and
changed-code fallow green.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FUv7bvbWNryuXgSBuqTtep

* fix: composite kernel without a root references edge

FreeRange runs plain `tsc -p tsconfig.json`, and a root `references`
entry makes non-build-mode TypeScript demand the referenced project's
built declarations (TS6305) — a standing "build first" tax on every
plain -p consumer (fr, editors). Keep the per-package composite
project and build it in typecheck (`tsc -b packages/kernel` before the
root and examples/sdk passes), but drop the root references edge: root
consumption resolves through exports to source, identical to runtime
and to the bundler. Probed: plain -p green with no prebuilt output;
kernel-side type errors still caught by its own build.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FUv7bvbWNryuXgSBuqTtep

* fix: R11 uses the layering parser; mutation config is a fallow entry

Review blockers on #1494:

- R11's private single-quote regex could miss a double-quoted or
  re-export route into packages/*/src. specifierSites now delegates to
  the layering model's parseImports (both quote styles, side-effect
  imports, re-exports, dynamic imports), with direct regressions for
  each formerly-invisible form.
- vitest.mutation.config.ts becomes a declared fallow entry instead of
  a tolerated unused-file finding: the full-repo audit now reports it
  reachable (unused files 2 -> 1; the remainder predates this PR).

FreeRange clean-checkout evidence: with packages/kernel/dist-types and
every *.tsbuildinfo deleted, `pnpm check:freerange` reports 0 findings
on this head — the TS6305 topology died with the root references edge
in the previous commit; check:freerange has no build precondition.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FUv7bvbWNryuXgSBuqTtep

---------

Co-authored-by: Claude <noreply@anthropic.com>
2026-07-30 12:12:46 +02:00
devin-ai-integration[bot] 8cce0ef6b8 test: ratchet mutation score over enumerated decision kernels (#1441)
* test: ratchet mutation score over enumerated decision kernels

Adds a Stryker (vitest runner) mutation lane scoped to the decision kernels,
a per-module baseline with tool/config provenance, and a ratchet that only
lets scores rise. Non-gating until two consecutive stable weekly sweeps.

Refs #1415

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

* chore: declare the mutation test-scope seam for production-export analysis

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

* test: own kernel tests in the mutation registry and ship the #1430 lane envelope

- restore bench:help-conformance, broken by a formatting-path edit
- kernel test files select their module on PRs (registry `tests` + workflow paths),
  asserted to reach the kernel through the import graph
- every mutation run writes the standard scheduled-lane artifact envelope
- move src/utils/__tests__/errors.test.ts beside its source per the mirror rule

Refs #1415, #1430

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

* test: derive kernel test ownership and land the scheduled-lane health monitor

Ownership of a kernel's tests is now computed from the static import graph
(scripts/mutation/ownership.ts) instead of a hand-listed set, so a test that
reaches a kernel indirectly -- src/__tests__/daemon-error.test.ts through
src/daemon.ts -- selects that kernel on a PR. The PR lane triggers on every src
test and shards the derived modules, keeping wall clock at one module.

The lane envelope (#1430) is now written on every exit path with the stage it
reached, so a crash before any mutant runs is distinguishable from a lane that
never ran. Adds the derived cadence monitor (scripts/lane-health, daily
workflow): scheduled lanes are enumerated from .github/workflows/ and reported
dark, failing, or never-run against their own cron cadence.

* fix: merge only Stryker reports from a shard directory

The shard artifacts now carry the lane envelope beside mutation.json, and the
merge globbed every .json under the download path, so the ratchet job fed the
envelope to the report parser and died after the mutants had already run.

* fix(mutation): fail on incomplete shard sets and envelope pre-run failures

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

* fix(mutation): downgrade a passing envelope when a later lane step fails

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

* refactor(mutation): shard by registry, defer the PR lane, drop the bundled watcher

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

* docs: describe registry sharding and the deferred PR mutation lane

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

* fix(mutation): make the pre-graduation tooling exception select real mutants

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

* test(mutation): give the worktree fixture commits their own identity

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

---------

Co-authored-by: Michał Pierzchała <thymikee@gmail.com>
Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
2026-07-28 10:07:14 +02:00