feat(#1430): versioned capability manifest + native stamping (ADR-1244 Phase 1) (#1436)

* feat(#1430): versioned capability manifest + native stamping (ADR-1244 Phase 1)

Make the capability manifest versioned — the data substrate the Capability
Ecosystem (ADR-1244) keys off:

- capability.json gains a REQUIRED semver `version` plus the optional
  ecosystem envelope (`engines.gsd`, `compatVersions`, `integrity`,
  `provenance`); the build-time conformance validator enforces them via a new
  `validateVersionEnvelope()` (exported for the Phase 2 runtime overlay).
- All 32 native capabilities stamped with `version` (= package version,
  lockstep) + `engines.gsd`; `sync-manifest-versions.cjs` gains a glob sweep
  that keeps them in sync, and the issue-844 regression guard is extended.
- Strict SemVer 2.0.0 grammar blocks metacharacter/space/unicode smuggling in
  version strings; range/integrity fields are shape-validated (satisfaction
  and the load-time gate are deferred to Phase 2/4).
- Capability rel-paths emitted forward-slash for cross-platform git correctness.

Closes #1430

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* docs(#1430): add changeset for versioned capability manifest

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

capabilities/drift/capability.json

@@ -1,11 +1,20 @@
 {
   "id": "drift",
   "role": "feature",
+  "version": "1.5.1-dev.0",
   "title": "Drift detection gates",
   "description": "Post-execution drift detection gates that run after each wave completes. Provides two gates at execute:wave:post: a blocking schema drift gate (detects schema files changed without a database push) and a non-blocking codebase drift gate (detects structural additions not reflected in STRUCTURE.md).",
   "tier": "full",
   "requires": [],
-  "runtimeCompat": { "supported": ["*"], "unsupported": [] },
+  "engines": {
+    "gsd": ">=1.6.0"
+  },
+  "runtimeCompat": {
+    "supported": [
+      "*"
+    ],
+    "unsupported": []
+  },
   "skills": [],
   "agents": [],
   "hooks": [],
@@ -17,7 +26,10 @@
     },
     "workflow.drift_action": {
       "type": "enum",
-      "values": ["warn", "auto-remap"],
+      "values": [
+        "warn",
+        "auto-remap"
+      ],
       "default": "warn",
       "description": "Action taken by the codebase drift gate when the threshold is exceeded: warn (advisory message) or auto-remap (spawn gsd-codebase-mapper agent to refresh STRUCTURE.md)."
     },
@@ -32,14 +44,18 @@
   "gates": [
     {
       "point": "execute:wave:post",
-      "check": { "query": "verify.schema-drift" },
+      "check": {
+        "query": "verify.schema-drift"
+      },
       "when": "workflow.schema_drift_gate",
       "blocking": true,
       "onError": "skip"
     },
     {
       "point": "execute:wave:post",
-      "check": { "query": "verify.codebase-drift" },
+      "check": {
+        "query": "verify.codebase-drift"
+      },
       "when": "workflow.schema_drift_gate",
       "blocking": false,
       "onError": "skip"