a0fafedfa0
VS Code is a net-new EoS runtime that — unlike every prior migration — is NOT CLI-installed (Marketplace/VSIX extension). It has zero runtime==='vscode' branches in bin/install.js and stays that way (regression-guarded); it is driven entirely through the negotiated imperative Host-Integration adapter. Registry + validator (the hard part): - capabilities/vscode/capability.json (role:runtime): full hostIntegration block (imperative / palette / active vscode.lm model / engine hook bus / sandboxed-storage / mcp transport / sandboxed-web runtime; dispatch nested, maxDepth 5 per VS Code's documented subagent depth). - capability-validator.cjs extended so a role:runtime capability can legitimately declare "extension-distributed, no config directory": new configHome.kind:'none' + installSurface:'none' (+ GATE-A pairing + the parity maps), with localConfigDir and configHome.name made conditional on kind!=='none'. All 18 runtimes still validate; getDirName returns a distinct sentinel (not '.claude') for a no-config runtime. - The add-a-registry-runtime tax: NON_INSTALLABLE_RUNTIMES exemption in the runtime-flags drift guard, vscode added to global-config-home SPECIAL_CASED, EXPECTED_PROFILES.vscode='ide', and the config-adapter/derivation/pin-count guards updated. No golden-install fixture, model-catalog, or CONFIGURATION rows (vscode never enters allRuntimes). Dispatch + extension surface: - Fixed vscode/extension.js's createHub()-no-args bug (every dispatch was UnknownCommand, masked by a vacuous reachability test) — now reuses the shared dispatchGsdCommand subprocess-shim (Node/desktop); the reachability test is tightened to assert real dispatch. - Promoted the #1933 host binding to a shipped vscode/host-binding.js; activate() now composes the model/hookBus/stateIO seams through it. Corrected the model seam to VS Code's real API (vscode.lm.selectChatModels() -> model.sendRequest(); vscode.lm.sendRequest does not exist) so the binding actually composes on real desktop VS Code instead of throwing. - New vscode/browser.js Web Extension entry with ZERO Node APIs (the engine's config/capability loading is Node-bound, so the web entry registers the surface and directs full dispatch to the native MCP server — honestly documented). - UPGRADE 1: GSD skills as native Language Model Tools (contributes.languageModelTools + vscode.lm.registerTool), invoke() dispatching through the hub. - UPGRADE 2: native subagent dispatch wired onto #runSubagent / chat.subagents.allowInvocationsFromSubagents (fail-soft on API availability, maxDepth 5 enforced). - vscode/package.json: browser entry, engines.vscode ^1.105, chatParticipants + languageModelTools contributions; fixed a stale activationPoints->activationEvents manifest key. Added "vscode" to the package files array. Docs (## vscode matrix section) + changeset (Added). 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.