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/ui/capability.json

@@ -1,23 +1,95 @@
 {
-  "id": "ui", "role": "feature", "title": "UI design contracts",
+  "id": "ui",
+  "role": "feature",
+  "version": "1.5.1-dev.0",
+  "title": "UI design contracts",
   "description": "UI-SPEC design contract + retrospective UI audit for frontend phases.",
-  "tier": "full", "requires": [],
-  "runtimeCompat": { "supported": ["*"], "unsupported": [] },
-  "skills": ["ui-phase", "ui-review"],
-  "agents": ["gsd-ui-checker", "gsd-ui-auditor"],
+  "tier": "full",
+  "requires": [],
+  "engines": {
+    "gsd": ">=1.6.0"
+  },
+  "runtimeCompat": {
+    "supported": [
+      "*"
+    ],
+    "unsupported": []
+  },
+  "skills": [
+    "ui-phase",
+    "ui-review"
+  ],
+  "agents": [
+    "gsd-ui-checker",
+    "gsd-ui-auditor"
+  ],
   "hooks": [],
   "config": {
-    "workflow.ui_phase":       { "type": "boolean", "default": true, "description": "Enable the UI design-contract gate during planning." },
-    "workflow.ui_review":      { "type": "boolean", "default": true, "description": "Enable the retrospective UI audit." },
-    "workflow.ui_safety_gate": { "type": "boolean", "default": true, "description": "Block execution on unmet UI-SPEC contracts." }
+    "workflow.ui_phase": {
+      "type": "boolean",
+      "default": true,
+      "description": "Enable the UI design-contract gate during planning."
+    },
+    "workflow.ui_review": {
+      "type": "boolean",
+      "default": true,
+      "description": "Enable the retrospective UI audit."
+    },
+    "workflow.ui_safety_gate": {
+      "type": "boolean",
+      "default": true,
+      "description": "Block execution on unmet UI-SPEC contracts."
+    }
   },
   "steps": [
-    { "point": "plan:pre",    "ref": { "skill": "ui-phase" },  "produces": ["UI-SPEC.md"],   "consumes": ["CONTEXT.md"], "when": "workflow.ui_phase",  "onError": "skip" },
-    { "point": "verify:post", "ref": { "skill": "ui-review" }, "produces": ["UI-REVIEW.md"], "consumes": ["UI-SPEC.md"], "when": "workflow.ui_review", "onError": "skip" }
+    {
+      "point": "plan:pre",
+      "ref": {
+        "skill": "ui-phase"
+      },
+      "produces": [
+        "UI-SPEC.md"
+      ],
+      "consumes": [
+        "CONTEXT.md"
+      ],
+      "when": "workflow.ui_phase",
+      "onError": "skip"
+    },
+    {
+      "point": "verify:post",
+      "ref": {
+        "skill": "ui-review"
+      },
+      "produces": [
+        "UI-REVIEW.md"
+      ],
+      "consumes": [
+        "UI-SPEC.md"
+      ],
+      "when": "workflow.ui_review",
+      "onError": "skip"
+    }
   ],
   "contributions": [],
   "gates": [
-    { "point": "plan:pre",          "check": { "query": "ui.plan-gate" },   "when": "workflow.ui_safety_gate", "blocking": true, "onError": "halt" },
-    { "point": "execute:wave:post", "check": { "query": "ui.safety-gate" }, "when": "workflow.ui_safety_gate", "blocking": true, "onError": "halt" }
+    {
+      "point": "plan:pre",
+      "check": {
+        "query": "ui.plan-gate"
+      },
+      "when": "workflow.ui_safety_gate",
+      "blocking": true,
+      "onError": "halt"
+    },
+    {
+      "point": "execute:wave:post",
+      "check": {
+        "query": "ui.safety-gate"
+      },
+      "when": "workflow.ui_safety_gate",
+      "blocking": true,
+      "onError": "halt"
+    }
   ]
 }