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Author SHA1 Message Date
Tom Boucher
0408276791 chore(#2797): federate reviewer config keys off the central schema (#2841)
* chore(#2797): federate reviewer config keys off the central schema

Phase 4 of epic #2782 (ADR-2782 D9, config half). Runs AFTER 5a per the
ADR's swap amendment: a federated config slice lives inside a
capabilities/<id>/capability.json, and three of the five key families had
no capability directory until 5a created them.

Four key families move to the lanes that use them; the central-schema
removal and the federated addition land in this one commit because the
exclusivity invariant fails the build on a key present in both.
review.max_prompt_tokens, review.default_reviewers and
review.reviewer_instances describe policy ACROSS lanes and stay central.

Two things the issue did not name, both found while building it:

1. THE EXCLUSIVITY GATE WAS BLIND TO PATTERNS. It compared federated keys
   against manifest.validKeys only, and two of the four families
   (review.models.<slug>, review.max_prompt_tokens_per_reviewer.<slug>)
   were pattern-backed. That is not cosmetic: isCentralConfigKey consults
   those patterns and mergeFederatedConfig skips every key for which it
   returns true, so declaring a slice while the pattern survived would
   have shipped an INERT slice behind a green gate — the exact
   half-migrated shape the invariant exists to prevent. The gate now
   loads the patterns from the same manifest the runtime reads.

2. AN UNSET PER-LANE BUDGET NOW RESOLVES TO 0, NOT NOT-FOUND, because a
   federated key always resolves to its declared default. The three
   fallback guards in review.md checked only empty-or-"null", so a user
   who set the GLOBAL review.max_prompt_tokens would have silently lost
   trimming on the HTTP lanes. The guards now treat 0 as unset.

D9 says review.models.<slug> is owned by "the lane whose slug it names".
That is false for one lane: the shipped key is review.models.agy while
the slug is antigravity. Ownership follows the lane; the key name is
preserved, because renaming would break every config that sets it.

Existing tests updated rather than left asserting the old world:
config-get on a cleared federated key yields empty instead of
not-found (what #2046 actually protects — never persisting the literal
"null" — is unchanged and still asserted); the config-schema dynamic
pattern representative moves to reviewer_instances; the
prototype-pollution guard case moves to a surviving dynamic prefix so
alert #26 keeps its coverage, with a new case asserting the old key is
now rejected earlier; and Phase 2's harvest-widening inertness assertion
becomes an ownership assertion, since Phase 4 is what consumes it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#2797): use a -1 sentinel so an explicit per-lane budget of 0 survives

A federated config key always resolves to its declared default, so an
unset per-lane prompt budget needed a value the workflow could treat as
'not configured'. The first cut used 0 — which is wrong: 0 is already a
LEGITIMATE per-lane budget meaning 'do not trim this lane' (the
early-return guard in prepare_trimmed_prompt_for_reviewer). Treating it
as unset would have silently switched a user who deliberately disabled
trimming for one lane onto the global budget.

The sentinel is now -1, which is not a valid token budget, so all three
states stay distinguishable: unset falls back to global, an explicit 0
disables trimming for that lane, and an explicit N is used. Locked by
three CLI round-trip tests.

Surfaced by the isolated security reviewer before it crashed mid-run;
verified independently against the shipped trim guard rather than taken
on trust.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#2797): update central-registration assertions and stay under the review.md cap

The remote runner caught both; my local sweep missed the files.

1. tests/plan-review-convergence.test.cjs asserted the three local-server
   host keys are in VALID_CONFIG_KEYS. They are federated to their lane
   capabilities now, and the exclusivity invariant forbids a key living
   in both places. What #2306-local actually protects is that config-set
   ACCEPTS them, so that is what is asserted — via isValidConfigKey, the
   predicate config-set itself uses, which spans central and federated.
   A second assertion pins federated ownership, so a silent reversion
   back to the central schema fails too.

2. review.md exceeded the LARGE tier hard cap (62583 > 61440). That cap
   is a red line, not a budget to raise. The three per-lane budget guard
   comments were near-identical; condensed to one terse line each. 61371
   bytes, 69 to spare. Real extraction to workflows/review/modes/ is
   Phase 5b/6 work.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#2797): fail closed on a broken config-schema manifest; reconcile stale docs

Isolated security review findings.

MAJOR — loadCentralConfigPatterns failed OPEN. It swallowed a JSON parse
error and returned [], while its sibling loadCentralConfigKeys, reading
the SAME file, writes to stderr and throws ExitError(1) on that identical
failure class. Fail-open here defeats the gate this function exists to
feed: with zero patterns, validateCrossCapability's pattern-collision
check silently passes and an inert federated slice ships green. It was
masked in the one production call site only because loadCentralConfigKeys
runs first against the same path — a coincidence of ordering, not a
guarantee, and this function is exported and called standalone. The two
now share a contract: ENOENT is the legitimate absent case, anything else
throws loudly. A single unparseable PATTERN is still skipped, which
degrades to "checked less" rather than blocking every build. The branch
had zero coverage; it now has two tests (malformed JSON, EISDIR).

MINOR — docs/CONFIGURATION.md still listed review.models.qwen and
review.models.cursor as settable, ~770 lines below this PR's own new
Ownership section. Those lanes take no model flag, so they declare no
model key and config-set now rejects them. Rows removed; the missing
review.models.agy row added; the per-reviewer budget row corrected to
name only the lanes that own a budget key, and to document that a
per-lane 0 disables trimming for that lane.

Also fixes a shadowed "raw" binding introduced by the fail-closed change,
which made the generator unrequirable — caught immediately by its own
--check.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(#2797): backfill changeset pr number to 2841

* fix(#2452): make the base-ref mutation test hermetic against leaked GIT_* env

tests/mutation-workflow-base-ref.test.cjs fails on PR branches while next
stays green, and it is currently blocking at least three unrelated PRs
(#2841, #2832, #2827) with:

  error: invalid object 100644 <sha> for 'base-N.txt'
  error: Error building trees

The existing loop comment attributes this to `git add .` rehashing O(n^2)
blobs "before the object write had landed" and works around it by staging
one path per iteration. That is not the cause: sequential execFileSync
calls cannot race each other's object writes, and the failure persisted
after that change — it simply moved to a lower commit index.

The cause is that the git() helper inherited the runner's environment. A
leaked GIT_INDEX_FILE makes `git add` write into a DIFFERENT repository's
index; GIT_OBJECT_DIRECTORY / GIT_ALTERNATE_OBJECT_DIRECTORIES send the
blob to another object store; GIT_DIR / GIT_WORK_TREE redirect the whole
operation. In every case `git commit` then cannot resolve a blob it just
staged, which is precisely the error above.

Verified by negative control: with GIT_DIR exported, this test fails on
the unfixed helper (the git commands operate on the wrong repository
entirely); with the helper stripping GIT_* it passes. The single-path
staging is kept — it is genuinely less work — but it is no longer load
bearing.

Found while shipping #2797. Fixed in place rather than deferred: it is a
defect surfaced during the work, and it is blocking other contributors.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#2452): build the base-advance commits empty, removing the lost-object class

The base-ref guard has been failing in CI with:

  error: invalid object 100644 <sha> for 'base-N.txt'
  error: Error building trees

It is currently red on at least three unrelated PRs (#2841, #2832,
#2827) while next stays green.

Two theories have now been tried and neither held. #1881 blamed `git
add .` rehashing O(n^2) blobs and switched to staging one path per
iteration; the failure moved from commit 32 to commit 25 and carried on.
The preceding commit here made the git helper hermetic against leaked
GIT_* environment — that IS a real vulnerability (with GIT_DIR exported
the helper operates on the wrong repository entirely, proven by negative
control) but it produces a different error than CI reports, so it is not
demonstrably the cause either.

Neither trigger reproduces off-CI, so this stops guessing at the trigger
and removes the failure CLASS instead. The loop needs base-branch DEPTH
and nothing else: no assertion reads these commits' contents, and
base-side files cannot appear in `origin/base...HEAD` regardless.
`--allow-empty` writes no blob and no tree, so there is no object for the
index to reference and lose. It is also far less work than 60
write+hash+index cycles.

The guard still proves its mechanism: the test asserts that a --depth=1
base fetch FAILS and a full fetch resolves, so a broken topology would
surface immediately rather than passing vacuously.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
Co-authored-by: Test <test@example.com>
2026-07-30 08:52:56 -04:00
Tom Boucher
46e84d5e39 chore(#2795): reviewer manifest body + registry harvest, validation, forward-compat (#2823)
* chore(#2795): reviewer manifest body + registry harvest, validation, forward-compat

Phase 2 of epic #2782 under ADR-2782. Delivers D1, D2, D3, D7, D8 and the four
Phase-1 vocabulary amendments (A1-A4).

- VALID_ROLES gains "reviewer"; the reviewer body is admissible on role:runtime
  (a host that is also a reviewer keeps one manifest) and on the new
  role:reviewer (a lane that is not an install target). A reviewer body on
  role:feature is an error: declaring one is an assertion of lane-ness.
- validateReviewerBody + validateLaneProbe + validateLaneInvoke: nine closed
  enums, a transport discriminator selecting mutually-exclusive invoke
  sub-shapes, bounded probes (D7), and outputArg required-iff outputChannel is
  file-arg and forbidden otherwise.
- Absent-safe (D4.1): only `undefined` is absent. null/{}/[]/false/0 are
  malformed assertions and error. 39 of 39 shipped capabilities depend on this.
- collectReviewerWarnings: an unknown field inside the body warns, never errors,
  so a forward-built manifest degrades visibly instead of failing the build.
- D8 uniqueness (slug / flags / reviewsSection) lives in validateCrossCapability,
  so it is enforced at build time over first-party AND at load time over the
  merged first-party union overlay set, with first-party-wins falling out of the
  loader's existing ordering rather than a new provenance check.
- Config harvest widened past the role==="feature" branch in both the generator
  and the ownership loop. The often-cited cause of the stranded reviewer config
  keys -- the runtime body forbidding feature-only fields -- is not the
  mechanism: `config` is not in FEATURE_FIELDS_FORBIDDEN_ON_RUNTIME. The cause is
  two harvest sites that never read it. Verified inert: no shipped capability
  declares config on a non-feature role, and the generated registry is unchanged.

Three ADR corrections are folded in (Phase 1 set the precedent of amending
in-phase): the misattributed config-stranding cause, D3's inverted
profile-membership claim, and the specified capability folder names for
lm_studio / llama_cpp, which would have failed the id kebab-case invariant.

Closes #2795

* chore(#2795): collapse nine enum checks into one validateEnumField helper

Standards-axis review findings, both applied:

- Duplicated Code: the enum-membership + enumerate-the-members error shape
  repeated near-verbatim at nine call sites. Routing them through one helper
  makes "the error names its valid members" structural rather than a
  convention repeated nine times, where it would drift. That property is
  load-bearing until Phase 6 ships the prose reference, because these errors
  are currently the only documentation of the vocabulary.

- Speculative Generality: the isReservedName() pre-check on every enum field
  was inert. A VALID_* set never contains __proto__/constructor/prototype, so
  membership alone already rejects them, and "must be one of: ..." is more
  actionable than "is a reserved name". The literal guards remain where they
  do real work -- the key-derived write sites in the registry generator and
  the claim() accumulator.

The reserved-name test now asserts all three reserved names are rejected via
enum membership, rather than one name via a branch that no longer exists.

* fix(#2795): align lane slug grammar with Phase 1 and wire the load-time diagnostic channel

Spec-axis review findings, both applied.

(1) The slug grammar had diverged from Phase 1's core descriptor. Phase 1 exports
LANE_SLUG_RE = /^[a-z0-9][a-z0-9_-]*$/ (leading digit permitted); the manifest
validator required a leading LETTER. A slug the core descriptor accepts -- a
model-named lane such as 4o-mini -- would have been rejected by the manifest
validator, which is exactly the translation layer ADR-2782 exists to delete. It
was inert only because all eleven shipped slugs begin with a letter, so nothing
else would have caught it until a third party shipped such a lane.

The grammar cannot be reduced to one definition: Phase 1's module compiles to
gitignored build output, and capability-validator.cjs is a committed plain .cjs
that must load on a fresh worktree before build:lib has ever run. That makes this
the repo's DEFECT.GENERATIVE-FIX class, so the duplication now carries a parity
assertion -- laneSlugGrammarMatchesPhase1Descriptor -- which compares both the
source grammar and the accept/reject verdict for a shared input set, and fails if
the two ever drift again.

(2) collectReviewerWarnings had exactly one caller: the build-time generator,
which only ever sees first-party in-repo manifests. The real third-party overlay
loader never called it and ValidatorModule did not declare it, so ADR-2782 D4.3
-- an unknown field inside a reviewer body is ignored WITH A WARNING -- surfaced
nowhere at runtime, which is precisely the case D4.3 exists for.

loadRegistry now collects those diagnostics on the accept path, behind a
typeof-guard (an older built validator without the function still loads) and a
try/catch (ADR-1244 D2's never-crash contract outranks a diagnostic). They land
in a NEW OverlayMeta.diagnostics field rather than OverlayMeta.warnings, because
warnings records capabilities that were SKIPPED and a consumer treating every
entry as inactive would mislabel a working lane.

Covered end-to-end by overlayLaneWithUnknownFieldIsAcceptedAndDiagnosed, which
drives a real global-scope overlay through loadRegistry and asserts the lane is
accepted, produces no skip warning, and yields a diagnostic naming the field.

* fix(#2795): make the reviewer validators honour their documented totality contract

Isolated adversarial review finding (MAJOR), reproduced by execution.

validateReviewerBody documents itself as "TOTAL: returns an array of error
strings for ANY input and never throws", and the overlay loader contracts every
validator to RETURN errors -- #1461 OVL-1 records a validator that THREW and
would have crashed every consumer of loadRegistry. The contract was false at ten
sites: JSON.stringify throws on a BigInt and on a circular structure, and every
enum/scalar rejection path interpolated the rejected value into its own rejection
message. Reading the value could throw too, before any message was built, via a
throwing getter or a Proxy get/ownKeys trap.

Not reachable through a capability.json today -- every ingestion path is a plain
JSON.parse of file text, which cannot express any of those shapes. Fixed anyway:
the contract is stated on an EXPORTED function, and a caller must not have to
re-derive today's reachability analysis to know whether it holds.

Two layers, because serialization safety alone is insufficient:
- describeValue() renders any value without throwing, so messages stay useful
  (a BigInt now reads "got: 10n" rather than degrading to a generic fallback).
- A structural try/catch around validateReviewerBody and collectReviewerWarnings
  makes the guarantee absolute rather than argued, covering read-time throws that
  fire before any message exists.

The same review found the property test guarding this contract was FALSE
CONFIDENCE, which is the more important half. fc.anything() at default
constraints emits no BigInt, no circular reference, no getter and no Proxy --
20,000 sampled draws produced zero of each -- so the test was named for a
contract its generator could not reach. Even withBigInt is insufficient under
whole-value fuzzing, because the defect needs an exotic value in a specifically
NAMED field and random key names never land on one.

The property is now field-targeted across all twelve reviewer fields, and a
companion test enumerates the shapes fast-check cannot generate at all
(BigInt, circular, throwing getter, symbol, function, null-prototype) across
scalar positions, array-element positions, and read-time traps.

Verified red-before-green: with the fix reverted both property tests fail; with
it restored all 119 pass.

* chore(#2795): backfill changeset pr number to 2823
2026-07-29 10:55:45 -04:00