Files
msd-core/capabilities/antigravity/capability.json
Tom Boucher 62b0d939b6 feat(#3274): make reviewer-lane timeout configurable via timeoutConfigKey (#4083)
* feat(#3274): make reviewer-lane timeout configurable via timeoutConfigKey

Add an optional `timeoutConfigKey` field to the reviewer lane descriptor,
resolved in `resolveLanePlan` at invocation time and falling back to the
frozen `timeoutFloorMs` when unset or invalid, in the same spirit as the
existing `promptBudgetKey`/`modelConfigKey` fields. All 12 shipped lanes
declare `review.timeouts.<slug>` on both surfaces (the descriptor and their
capability.json manifest), validated by capability-validator.cjs.

For the antigravity lane, the native `agy --print-timeout` flag — previously
a second hardcoded literal (`540s`) independent of the outer cap — is now
derived from the same resolved outer timeout in `antigravityArgv`, preserving
the existing 60-second buffer relationship (ADR-2782 D6: the outer bound is
declared data, the inner one is handler-owned).

The antigravity default timeoutFloorMs stays at 600s per the maintainer's
disposition; users raise it through the new config key instead.

* docs(#3274): document review.timeouts.* and extract resolveTimeoutMs helper

Address code-review findings on the timeoutConfigKey change: extract the
inline timeout-resolution logic into a named, exported, directly-tested
resolveTimeoutMs helper (matching the file's existing configString/
normalizeHost convention); document the new review.timeouts.* federated
config keys in docs/CONFIGURATION.md, docs/reference/capability-manifest.md,
and docs/how-to/ship-a-reviewer-lane.md; add the changeset fragment.

* fix(#3274): resolve native antigravity timeout in resolveLanePlan, not the runner

gsd-test caught two design mistakes in the prior commits:

1. SpawnPlan.argv is documented and tested as fully resolved by
   resolveLanePlan (model/effort/output/prompt already folded in) — leaving
   the antigravity '{{nativeTimeout}}' marker unresolved until the runner's
   antigravityArgv violated that contract and broke tests that read
   plan.argv directly (tests/antigravity-reviewer.test.cjs,
   tests/review-default-reviewers-workflow.test.cjs). Fix: '{{nativeTimeout}}'
   is now a fifth ARGV_PLACEHOLDER member, resolved by resolveLanePlan itself
   via the new nativeTimeoutToken() helper, exactly like the other four.
   antigravityArgv reverts to its pre-#3274 four-argument form. Also missed
   updating capabilities/antigravity/capability.json's invoke.args to match
   the descriptor, which broke the manifest/descriptor parity test.

2. tests/reviewer-config-federation.test.cjs enforces a deliberate, narrow
   invariant (#3691 narrows #2797): qwen, cursor, and coderabbit — the three
   lanes with neither a model flag nor a host — may own no config key beyond
   their own prompt-budget key. Adding review.timeouts.<slug> to all 12 lanes
   violated it. Fix: those three keep timeoutConfigKey: null and own no
   review.timeouts.* key, matching their existing modelConfigKey: null. The
   other 9 lanes are unaffected.

* chore(#3274): backfill changeset PR number (pr:0 -> 4083)

---------

Co-authored-by: sim <sim@local>
2026-08-30 14:26:02 -04:00

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{
"id": "antigravity",
"role": "runtime",
"version": "1.12.0",
"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",
"{{nativeTimeout}}",
"{{model}}",
"-p",
"{{prompt}}"
],
"promptChannel": "argv-file-ref",
"outputChannel": "stdout",
"modelArg": "--model",
"effortChannel": "none"
},
"timeoutFloorMs": 600000,
"timeoutConfigKey": "review.timeouts.antigravity",
"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."
},
"review.timeouts.antigravity": {
"type": "number",
"default": -1,
"description": "Outer wall-clock timeout override (seconds) for the Antigravity reviewer lane. Unset is -1, a sentinel: 0 or a negative number is also treated as unset (a timeout has no legitimate zero/negative value), so no second sentinel is needed. Falls back to the lane's built-in timeoutFloorMs when unset."
}
}
}