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>
Net-new EoS/pi installable runtime — purely additive (no prior runtime==='pi'
branches). pi is a bun-runtime programmatic-CLI whose /gsd command is registered
by a native ExtensionAPI extension and dispatches through the embedded engine.
Stage 1 (install plumbing):
- capabilities/pi/capability.json: full hostIntegration descriptor (imperative /
slash-programmatic / active-model / native-extension / bun) + hostBehaviors
{nativePlugin, pluginOnlyInstall}.
- --pi flag + interactive-menu renumber (All 17->18); pi added to RUNTIME_FLAG_IDS,
RUNTIME_LABELS, RUNTIME_META, allRuntimes/runtimeMap, model-catalog defaults.
- Install mirrors OpenCode: pi installs the gsd.cjs extension + the shared engine
payload (gsd-core + scripts + config markers) + the shared hooks bundle (spawned
by the extension at lifecycle events, like OpenCode's plugin). pluginOnlyInstall
EXCLUDES declarative command/agent/skill markdown, which pi has no host-read
surface for (its /gsd is programmatic). _installNativePluginIfDeclared (extracted
from the opencode-family path) copies pi/gsd.cjs -> ~/.pi/agent/extensions/gsd.cjs
(global) / .pi/extensions/ (local). pi added to package.json files.
- Golden: new pi.json (320 files: extension + engine + 27-file hooks bundle, no
markdown); the 16 other fixtures + claude-local change only by the shared
model-catalog hash line.
Stage 2 (real dispatch + upgrades):
- Shared dispatchGsdCommand() (shell-command-projection): bounded, no-throw
subprocess-shim to gsd-tools.cjs (the only full-surface dispatch path; no
in-process full-hub factory exists). Fixes pi/gsd.cjs's createHub()-no-args bug
(every dispatch was UnknownCommand) AND the identical bug in mcp-server.cts's
gsd_invoke_command, which a vacuous unknown-family-only test had masked (now has
a real dispatch regression test).
- pi/gsd.cjs: /gsd handler now (args, ctx) - tokenizes (quote-aware, via the
shipped hooks/lib/git-cmd.js) + dispatches real family/subcommand (not hardcoded
query/help); gsd_invoke gets a TypeBox (JSON-schema-fallback) parameters schema +
consumes params; getArgumentCompletions; before_provider_request active-model
steering (fail-open on null resolution); functional session_start /
before_agent_start / session_before_compact hook bridges (spawn the shipped GSD
hook scripts).
- EXTENSION_EVENT_SURFACES.pi expanded from ['tool_call'] to the full 30-event
vocabulary.
Docs (host-integration matrix + how-to) + changeset (Added).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Add ZCode as a first-party runtime via a declarative capability descriptor
(capabilities/zcode/capability.json) with zero hardcoded runtime === 'zcode'
branches — exercising the de-hardcoded, data-driven runtime path that 1.7.0
(ADR-1016 / ADR-1239) enables.
Descriptor (all axes sourced verbatim from zcode.z.ai docs):
- configHome ~/.zcode; nested skills + flat commands/agents; profile-marker install
- Claude-shaped skill format reuses convertClaudeCommandToClaudeSkill (no new converter)
- hostIntegration: declarative / slash-file / mcp / electron; dispatch background=false
(foreground-only per docs); nested+maxDepth undocumented; passive model mode
Installer registration (data, not branches): --zcode flag, allRuntimes, runtimeMap,
interactive menu, --all list. getGlobalConfigDir + resolveRuntimeArtifactLayout +
ALLOWED_CONFIG_RUNTIMES + resolveInstallPlan all derive from the descriptor.
Revamped the brittle per-runtime golden-master tests to be count-agnostic,
descriptor-derived property tests (1.7.0 makes runtimes pluggable data, so pinning
frozen '15 runtime' snapshots is the wrong invariant): getdirname, label-policy,
config-adapter-registry (intent + install-plan golden master), capability-registry,
host-integration-descriptors (counts derive from curated maps). Adding a runtime
descriptor now extends coverage with zero edits to those suites.
Welcome banner, --zcode help, supported-runtimes how-to, and the host-integration
capability matrix (every axis cited) updated.
* feat(#1928): remove sunset gemini cli runtime, redirect to antigravity
Google sunset Gemini CLI on 2026-06-18; Antigravity CLI is its official successor (already a first-class GSD runtime). Remove the gemini runtime from the enum (16->15), aliases, labels, config-home fragment, install path, converters (convertClaudeToGemini{Markdown,Toml,Agent}, convertSlashCommandsToGeminiMentions), capability descriptor, gemini-extension.json, RULESET.GEMINI.*, and the interactive menu (renumbered, no gap).
--gemini now prints an explicit deprecation notice citing the 2026-06-18 sunset and redirects to --antigravity (no silent alias, per the issue's Hyrum's-Law rejection). Antigravity is preserved throughout: its GEMINI.md contextFileName, .gemini/antigravity config home, the shared convertGeminiToolName/claudeToGeminiTools tool vocabulary, and the 'gemini' hookEvents dialect it declares. GEMINI.md retargeted as Antigravity's context file.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* chore(#1928): backfill changeset PR number (#1996)
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* chore(#1928): drop Gemini CLI from issue templates (review nit)
Removes the sunset Gemini CLI runtime from the two GitHub issue-template
runtime lists that the removal PR missed, per @davesienkowski's review nit:
- feature_request.yml: 'Applicable runtimes' checkbox (a user could otherwise
request a feature for a runtime GSD no longer supports)
- bug_report.yml: 'Runtime' dropdown + the stale ~/.gemini/settings.json
retrieval-help line
Leaves the post-removal templates fully consistent with the Antigravity redirect.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* refactor(#1679): ADR-1239 Phase B — collapse is<Runtime> flag blocks into runtimeFlags [AC2 slice 3]
Phase 2 AC2 slice 3. Collapses the four duplicated 'const isX = runtime === x'
declaration blocks in bin/install.js (uninstall / writeManifest / install / a
fourth helper — 48 of the 101 remaining runtime=== branches) into a single
runtimeFlags(runtime) helper in src/runtime-name-policy.cts, sibling to
getDirName / getRuntimeLabel / getGlobalConfigHomeFragment.
The purest add-a-host tax: a new runtime meant remembering to add ~12 flag lines
to each of four functions. Now it is one entry in RUNTIME_FLAG_IDS.
- src/runtime-name-policy.cts: RUNTIME_FLAG_IDS + runtimeFlags(runtime) -> frozen
map of is<Runtime> booleans (single runtime=== source, via loop).
- bin/install.js: import runtimeFlags; replace the 4 declaration blocks with one
destructure each. ZERO usage-site churn (flag names preserved; install.js's
eslint block has no no-unused-vars rule so destructure-all is clean).
- tests/runtime-flags.test.cjs: 4 tests (each runtime sets exactly its flag,
claude/unknown/empty -> all false, all 15 flags present + frozen, drift guard).
runtime === count: 101 -> 53 (-48). golden-install-parity 16/16 byte-identical
(behavior-identical collapse). AC2 data-collapse now substantially complete;
ADR-1235 agent-loop tail + per-runtime semantic residue remain (separate).
* chore(changeset): add Changed fragment for runtimeFlags collapse (#1679)
