Drive Codex install/uninstall through the descriptor-driven Host-Integration Interface (declarative embedding adapter → engine surface dispatch) and fold every positive `runtime === 'codex'` / `isCodex` projection into descriptor-driven `runtime.hostBehaviors`. Install/uninstall output stays byte-parity-gated (tests/fixtures/golden-install-parity/codex.json); no other runtime changes. Three Context7-verified upgrades, each with a test on the user-reachable surface: - Skill root → canonical $HOME/.agents/skills via a skills-kind `home` override, with pre-move migration cleanup (stale ~/.codex/skills/gsd-* removed on install and uninstall; user content preserved). Fixes getGlobalSkillsBase, writeManifest, and the skill-manifest inventory to honor the override so --skills-root / sync-skills / the manifest report the real location. - Six new hooks.json lifecycle events (PreToolUse, PermissionRequest, PreCompact, PostCompact, SubagentStop, UserPromptSubmit) shared by install + uninstall; extendedHookEvents reconciled [] -> the schema-valid wired subset. - Explicit `[agents] max_depth = 1` in the managed config.toml block, pinning the negotiated dispatch.maxDepth:1 axis. validateCodexConfigSchema now permits a known-scalar-only bare `[agents]` AgentsToml table (still rejects [[agents]] and unknown-key break-forms, #2760); mergeCodexConfig preserves the user's own AgentsToml scalars (max_threads etc.) instead of dropping them. 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.