Files
msd-core/capabilities/antigravity/capability.json
Tom Boucher 39673ae9ff fix(#3738): antigravity global skills/agents install to ~/.gemini/config (#3921)
* test(#3738): antigravity global skills/agents must resolve under ~/.gemini/config

Regression tests (RED first): --skills-root and gsd-tools query surfaces,
install-plan dest dirs, and converter skills-path rewrite.

* fix(#3738): antigravity global skills/agents install to ~/.gemini/config

Antigravity's machine-local discovery scans ~/.gemini/config/{skills,agents};
the configHome (~/.gemini/antigravity) is deprecated for artifacts. Declare the
ADR-1239 skills/agents 'home' override on the antigravity global layout — the
same mechanism codex uses (.agents) — and divert ~/.claude/skills/ references
in converted global content to ~/.gemini/config/skills/. configHome, settings,
probe/migration semantics, and the local .agents layout are unchanged.

* fix(#3738): retire deprecated configHome artifacts via installer migration 010

Next install converges an existing antigravity install: manifest-managed
skills/gsd-*/ and agents/gsd-*.md under the configHome (a location AGY does
not scan) are removed — modified files backed up first, unmanifested and
non-gsd entries preserved — and now-empty containers retired. Global scope
only; the local .agents surface is live. Docs + inventory updated.

* fix(#3738): converter sync in bin/install.js, harness emit-root coverage, migration baseline

- bin/install.js converter gains the same ~/.claude/skills → ~/.gemini/config/
  rewrite as src (ADR-1508 dual copy must stay in sync).
- Parity-manifest walk covers home-override emit roots (extraEmitRootsFor) so
  antigravity's emitted skills/agents stay differential-visible at their new
  install root; install-tree fixture regen confirms an unchanged key set.
- skills-from-commands rule declares the antigravity converter as a
  runtime-scoped transform; one ack fragment covers the identity-classed
  workflow whose antigravity copy embeds the old skills path.
- Migration 010 checksum baseline + home-override set doc updated; existing
  tests updated to the #3738 contract (global dest, golden parity via layout
  dest, integration expectations).

* fix(#3738): tolerate an absent extra emit root on baseline-side measurement

The base tree's installer predates the home override, so <HOME>/.gemini/config
does not exist there; walk() threw ENOENT and the in-job baseline build failed.
An absent extra root is the legitimate pre-override shape — skip it.

* fix(#3738): review findings — manifest agents root, bare skills-path rewrite, guard comment

- writeManifest resolves the agents-kind home override (_kindDestDirSafe), so
  the manifest records agents at their actual install root and drift detection
  keeps working (isolated review finding 1, major).
- Converter bare forms ~/.claude/skills and $HOME/.claude/skills (no trailing
  slash) divert to ~/.gemini/config/skills instead of falling through to the
  retired configHome path (finding 2).
- real-home-guard comment updated: antigravity's global agents kind is the
  first agents-kind home override (finding 3, doc-only).
- Regression tests for both behavioral findings.

* chore(#3738): changeset fragment (pr number backfilled after PR creation)

* chore(#3738): backfill changeset PR number (3921)

* fix(#3738): sandbox HOME in tests that install antigravity global artifacts

antigravity is the first home-override runtime in the golden-parity and
skills-wrapper suites (codex is not in their runtime lists), so those tests
never needed HOME sandboxing — the real-home guard now (correctly) refuses
their un-sandboxed global installs on CI, where HOME is the passwd home.

* fix(#3738): stop the K3 sequential-sandbox env leak; sandbox L2's home-override plans

K3's two back-to-back sandboxHome calls leave HOME pointing at the first
sandbox once the after-hooks restore (each call saves the env as it found
it, so the second saves the first's sandbox as 'original'). On the windows
matrix that leaked gsd-k3-qwen-* home into the L2 property, whose
antigravity/global run then (correctly) refused via the #3712 real-home
guard — antigravity is the runtime that made L2's plan escape into
os.homedir(). K3 now manages the env with a single restore; L2 sandboxes
HOME per run, mirroring L1.

* fix(#3738): L2 property's HOME sandbox must exist on disk

The #3712 guard's sandbox exemption fails closed when identify(effectiveHome)
is 'absent' — L2 never created its configDir, so on the windows matrix (tmpdir
under the real home) the antigravity/global run refused even with HOME
sandboxed. Create the per-run sandbox dir and clean it up.

---------

Co-authored-by: sim <sim@local>
2026-08-27 02:24:03 -04:00

155 lines
4.5 KiB
JSON

{
"id": "antigravity",
"role": "runtime",
"version": "1.11.0",
"title": "Antigravity",
"description": "Google Antigravity IDE — config/settings home nested under ~/.gemini/antigravity (probed across 1.x and 2.x layouts); global skills/agents install under ~/.gemini/config, the dir AGY scans for global discovery (#3738); Gemini hook event dialect; flat skill layout; tier-1 support.",
"tier": "core",
"requires": [],
"engines": {
"gsd": ">=1.6.0"
},
"runtime": {
"configHome": {
"kind": "dot-home-nested",
"name": "antigravity",
"parent": ".gemini",
"env": [
"ANTIGRAVITY_CONFIG_DIR"
],
"probe": [
"antigravity",
"antigravity-ide",
"antigravity-cli"
],
"probeExists": "gsd-core/VERSION"
},
"localConfigDir": ".agents",
"configFormat": "settings-json",
"artifactLayout": {
"global": [
{
"kind": "skills",
"destSubpath": "skills",
"prefix": "gsd-",
"nesting": "flat",
"recursive": false,
"converter": "convertClaudeCommandToAntigravitySkill",
"home": ".gemini/config"
},
{
"kind": "agents",
"destSubpath": "agents",
"prefix": "gsd-",
"nesting": "flat",
"recursive": false,
"converter": "convertClaudeAgentToAntigravityAgent",
"home": ".gemini/config"
}
],
"local": [
{
"kind": "skills",
"destSubpath": "skills",
"prefix": "gsd-",
"nesting": "flat",
"recursive": false,
"converter": "convertClaudeCommandToAntigravitySkill"
},
{
"kind": "agents",
"destSubpath": "agents",
"prefix": "gsd-",
"nesting": "flat",
"recursive": false,
"converter": "convertClaudeAgentToAntigravityAgent"
}
]
},
"triggerPrecedence": [
"skills",
"commands"
],
"commandStyle": "slash-hyphen",
"hooksSurface": "settings-json",
"hookEvents": "gemini",
"sandboxTier": "none",
"supportTier": 1,
"installSurface": "settings-json",
"writesSharedSettings": true,
"permissionWriter": "antigravity",
"extendedHookEvents": [],
"hostIntegration": {
"embeddingMode": "declarative",
"commandSurface": "slash-file",
"dispatch": {
"namedDispatch": "undocumented",
"nested": "undocumented",
"maxDepth": "undocumented",
"background": true,
"subagentToolkit": "full",
"backgroundDispatch": "undocumented",
"isolation": "undocumented"
},
"modelMode": "passive",
"hookBus": "host",
"stateIO": "filesystem",
"transport": "mcp",
"runtime": "go",
"effortSurface": "undocumented"
},
"hostBehaviors": {
"projectInstructionFile": "GEMINI.md",
"noPathRewrite": true,
"hookPathStyle": "raw",
"globalDirResolver": "antigravity"
}
},
"reviewer": {
"slug": "antigravity",
"flags": [
"--antigravity",
"--agy"
],
"transport": "spawn",
"probe": {
"kind": "command-exists",
"binary": "agy"
},
"invoke": {
"binary": "agy",
"args": [
"--print-timeout",
"540s",
"{{model}}",
"-p",
"{{prompt}}"
],
"promptChannel": "argv-file-ref",
"outputChannel": "stdout",
"modelArg": "--model",
"effortChannel": "none"
},
"timeoutFloorMs": 600000,
"emptyOutput": "handler-owned",
"reviewsSection": "Antigravity",
"evidenceClass": "source-grounded",
"requiresBinaries": [],
"promptBudgetKey": "review.max_prompt_tokens_per_reviewer.antigravity",
"modelConfigKey": "review.models.agy",
"handler": "antigravity"
},
"config": {
"review.models.agy": {
"type": "string",
"default": "",
"description": "Model passed to the Antigravity reviewer lane. The key suffix is the lane binary/flag alias `agy`, not the slug `antigravity` — preserved verbatim so existing .planning/config.json files keep working."
},
"review.max_prompt_tokens_per_reviewer.antigravity": {
"type": "number",
"default": -1,
"description": "Prompt-token budget for the Antigravity reviewer lane. Unset is -1, a sentinel: 0 is a legitimate value meaning \"do not trim this lane\", so it cannot double as \"not configured\". Keyed on the reviewer slug `antigravity`, not the `agy` binary alias used by review.models.agy."
}
}
}