d1e9491fef
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>
Changeset Fragments
This directory holds per-PR CHANGELOG fragments. Every PR with user-facing changes drops one (or more) <random-name>.md files here describing its CHANGELOG entry. Fragments are consolidated into the top-level CHANGELOG.md at release time.
Why
Two PRs that both edit the ### Fixed block of CHANGELOG.md always conflict on merge — git can't pick a serialization order without human input. Two PRs that each add a fresh .changeset/<unique-name>.md never conflict because they don't share lines.
See #2975 for the full rationale.
Adding a fragment
node scripts/changeset/new.cjs \
--type Fixed \
--pr 1234 \
--body "fix the thing — explain the user-visible change in one sentence"
This writes .changeset/<adjective>-<noun>-<noun>.md with frontmatter and a body. Three random words → concurrent PRs don't collide.
Format
---
type: Fixed
pr: 1234
---
**`/gsd-foo` no longer drops trailing slashes** — explain the user-visible change.
Allowed type: values follow Keep a Changelog: Added, Changed, Deprecated, Removed, Fixed, Security.
Opting out
PRs that legitimately have no user-facing impact can add the no-changelog label. CI honors it. When unsure, add the fragment.
At release time
Promotion is automatic. The release workflow's finalize job runs:
node scripts/changeset/cli.cjs render --version vX.Y.Z --date YYYY-MM-DD --allow-empty
This reads every fragment, groups bullets by type:, replaces ## [Unreleased] with a new ## [vX.Y.Z] - YYYY-MM-DD block, opens a fresh ## [Unreleased] above, and deletes consumed fragments. The --allow-empty flag ensures a no-change release still gets a dated heading (with a _No notable changes._ placeholder). A subsequent verify step confirms the promotion landed correctly. Maintainers do not run this by hand.
Archived fragments
.changeset/archived/ holds fragments for already-shipped releases (≤ 1.3.1), retained for provenance. Their content was hand-curated into the dated ## [1.x.y] sections of CHANGELOG.md during the #690 backfill — they were never consumed by render. All changeset tooling enumerates .changeset/ non-recursively, so archived fragments are never picked up or rendered. Do not move them back to the top level.