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2 Commits

Author SHA1 Message Date
Tom Boucher
3fac6e629f test(#3145): bound the installer/runtime cluster onto the process seam (#3176)
* test(#3145): bound the installer/runtime cluster onto the process seam

Migrates 156 unbounded sync spawn sites across 47 files. Allowlist 120 to 73.

Timeouts are sized from evidence already in the tree rather than a house
default, because this wave spawns installers rather than git plumbing and an
undersized bound does not catch a hang -- it manufactures CI flake, which is
worse, since a flake gets re-run instead of investigated. install.test.cjs
records a real spawnSync ETIMEDOUT at a 60000ms cap on a loaded bench while
another lane passed the same commit in 12.7s, so full installs are bound at
120000ms against that recorded incident.

Also adds an auditable escape to the guard's timeout ceiling. The 600000ms
cap was set in #3143 from partial evidence, but fragment-single-edit-
propagation carries a documented, load-tested 900000ms bound on a run that
chains a full build plus eight generators -- the guard would have rejected a
correct timeout the moment that file left the allowlist. A value above the
ceiling is now permitted only with an inline allow-spawn-timeout-ceiling
marker carrying a non-empty reason. It raises the ceiling; it never waives
the requirement for a bound, which is asserted directly.

install-shared.cjs keeps its hand-rolled assert rather than routing through
throwIfFailed: its message embeds both streams, and throwIfFailed carries
only a trimmed stderr. The message now also names the outcome, so a bounded
timeout reads as such across its 38 importers instead of as
expected null to equal 0.

* test(#3145): extract class-norm timeouts and correct the build-hooks sizing

A pre-PR review found 52 copies of four class-norm timeout constants across
this wave. These are not per-suite fixture bindings -- they are shared facts
about how long a class of subprocess takes, derived from a recorded bench
incident. That norm already moved once (60000 to 120000 after a real
ETIMEDOUT), and 52 copies would have drifted the next time it moved.

Extracts tests/helpers/timeouts.cjs, where each norm is justified once, and
converts the copies. A site that genuinely differs -- a real tsc compile, or
regen:derived -- keeps its own local constant with its own justification.

Also corrects a misclassification: scripts/build-hooks.js was sized as a
build at 120000 in twelve places and 60000 in another, but it compiles and
bundles nothing. Its own header says no bundling needed; it copies pre-built
files and syntax-checks them with vm. Three different values bounded one
script; now there is one.

* test(#3145): fix red CI — lint self-match and a Windows chunk overrun

Two failures on PR 3176.

lint-allow-test-rule-refs read a RuleTester fixture as a real exemption. The
fixture exists to prove an unrelated marker does NOT suppress the rule, so it
carries that marker's literal text as test data. Split via concatenation, the
same idiom no-unbounded-spawn-allowlist.test.cjs already uses for its own
self-match problem. The explanatory comment needed the same treatment.

The Windows shard 3/3 chunk was killed at its 600000ms budget. Output stopped
seven minutes before the kill, so this was an overrun rather than a slow
chunk: regenDerivedPropagatesSingleFragmentEditWithNoSecondSourceSurface runs
regen:derived bounded at 900000ms, which is larger than the whole chunk
budget, so the chunk killer always fires first and it can never complete
there. Both the test and that bound predate this change; modifying the file
pulled it into the Windows targeted set and exposed it. Skipped on Windows
with the reason recorded; the Linux lanes cover it. The 900000 bound and its
ceiling marker are unchanged -- they are correct.

* test(#3145): refresh the stale test-timings cost table

The Windows shard was killed at its 600000ms per-chunk budget. run-tests.cjs
packs chunks by measured duration from tests/test-timings.json, and an
unknown file falls back to the table's median weight -- advisory by design,
but it silently underweights exactly the files that matter.

Four of the failing chunk's 22 files were absent from the table, including
the two heaviest: fragment-single-edit-propagation.install.test.cjs at 230s
(it runs regen:derived) and agent-fragments-emission.install.test.cjs at 79s.
Both were weighted as average, so the chunk's total weight read 53.68 against
a budget of 60 and the packer produced a single chunk.

Regenerated from a passing full-suite run, per the remedy the script itself
documents. 700 to 770 entries, 70 added, 0 dropped -- verified, since
gen-test-timings.cjs replaces the table wholesale rather than merging.

Proven against the real packer: the same 22 files now weigh 103.91 and split
into two chunks. No logic, budget, or timeout was changed; raising a budget
to make a red gate pass is not a fix.

---------

Co-authored-by: sim <sim@local>
2026-08-07 15:18:18 -04:00
Tom Boucher
d1e9491fef feat(#2099): drive GitHub Copilot through the EoS descriptor + multi-event hook bus (ADR-1239)
Fold Copilot's residual runtime-literal branches onto descriptor-driven
hostBehaviors. Several issue premises were inaccurate (verified via research)
and deliberately NOT followed: writesSharedSettings/"legacy exclusion list"
(per-runtime descriptor data, copilot's false is correct); RUNTIME_CONTENT_DISPATCH.copilot
+ installSurface==='copilot-instructions' (already descriptor-driven);
extendedHookEvents (closed Claude/Gemini enum — hooks extended in code instead);
reapply ternary (already folded, kimi #2095).

Real folds (all byte-parity — golden byte-identical for every runtime):
- src/install-engine.cts + src/surface.cts: the two `.agent.md` filename cutovers
  (_copyStaged + _syncGsdDir) unified onto hostBehaviors.agentFileExtension via a
  new exported agentFileExtensionFor() accessor (kills the two-mechanism divergence).
- src/runtime-artifact-conversion.cts: applyAgentPathRewrites' copilot skip →
  hostBehaviors.noPathRewrite:true (antigravity #2096 precedent).
- bin/install.js uninstall: the two isCopilot cleanup branches → installSurface===
  'copilot-instructions' gate (symmetric with install-time).
- bin/install.js: `!isCopilot` in the two skipSharedHooksInstall checks →
  hostBehaviors.skipSharedHooksInstall:true (copilot has no shared gsd-*.js hooks).
- bin/install.js: three dead legacy inline-agent-loop isCopilot refs removed
  (copilot ∈ _DESCRIPTOR_AGENTS_RUNTIMES → unreachable; byte-parity proven by clean
  golden + real reachable-runtime install diffs). isCopilot dropped from 4 destructures.
Zero live `runtime==='copilot'`/`isCopilot` branches remain in bin/install.js,
install-engine.cts, surface.cts, or runtime-artifact-conversion.cts (AC2 guard scans all four).

UPGRADE 1 (multi-event hook bus): buildCopilotHookConfig() now emits preToolUse/
postToolUse/userPromptSubmitted/sessionEnd advisory handlers alongside sessionStart
(static inline bash/powershell — deterministic, golden-trackable). Only copilot.json's
gsd-session.json hash changes.

UPGRADE 2 (background dispatch): surfaced via the negotiated contract only —
dispatch.background:true exceeds the declarative-cli baseline and survives negotiation
with no downgrade warning. NO .agent.md frontmatter field (copilot has none). MCP
companion out of scope (AC4 names only 2 upgrades).

Tests: declarative-reference-copilot (adapter/axes/fail-closed + AC2 4-file source-grep
guard) + copilot-upgrades (live 5-event hook wiring; dispatch.background negotiation).
Matrix EoS note + how-to; changeset (Changed). capability-registry regenerated.

Incidental flaky-test RE-ARCHITECTURE (no-defer, maintainer-directed):
tests/opencode-review-reconstruction.property.test.cjs spawned ~600 synchronous
execFileSync('jq') subprocesses (numRuns:200 × 3 fast-check properties, one jq per
generated stream); a single jq freezing on a contended macos-22 CI runner hung the whole
unit-test chunk to its 600s kill (this PR's CI). --test-force-exit can't interrupt a
synchronous execFileSync, so the cure is to stop spawning per case, not just time-bound
it. Re-architected to run the SHIPPED jq program over the whole fast-check corpus in ONE
jq process: each generated stream is one compact-JSON array per line in a temp file,
`jq -c <PROGRAM>` (no -s) applies PROGRAM to each array (`.` == the array, exactly what
production's `jq -rs <file>` sees after slurping) and emits one result per line —
empirically byte-identical to the per-stream form across embedded-newline/empty/quote/
unicode/null-drop cases, and file-input (like production) so there's no stdin pipe to
deadlock on large I/O. ~600 spawns → 6; coverage unchanged (200-case corpus per property,
deterministic seeds) plus explicit boundary/diagnostic example batches. Still property-
tests the real shipped jq (no JS reimplementation). Per-call jq timeout retained as a
belt-and-suspenders bound.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-11 13:10:31 -04:00