feat: 迁移统一目录元数据契约 (#102)

## 中文

- 为 System Agent、34 个 Builtin Skill、28 个 Pointer/Collection 条目增加 catalog
sidecar
- 覆盖 147 个 collection child，并固定可证明的来源；无法证明的内容保持 listing-only/unknown
- 增加 strict Schema、validator、collection check 与 CI 完整性门禁

## English

- Add catalog metadata sidecars for the System Agent, 34 built-in
Skills, and 28 pointer/collection entries
- Cover 147 collection children while keeping unverifiable facts
listing-only or unknown
- Add strict schemas, validators, deterministic collection checks, and
CI completeness gates

## 验证 / Verification

- Catalog validator 17/17
- Collection generator 4/4
- 63 sidecars, 147 children, zero errors

agents/desirecore/catalog-metadata.v1.json

@@ -0,0 +1,82 @@
+{
+  "$schema": "../../schemas/catalog-metadata.v1.schema.json",
+  "schemaVersion": 1,
+  "identity": {
+    "kind": "agent",
+    "id": "desirecore"
+  },
+  "presentation": {
+    "defaultLocale": "en-US",
+    "i18n": {
+      "zh-CN": {
+        "name": "DesireCore",
+        "summary": "系统中枢调度器，负责任务分发、Agent 编排与全局状态监控",
+        "description": "DesireCore 是系统核心智能体，作为用户与所有 Agent 之间的桥梁。负责任务分发、Agent 编排与全局状态监控。遵循「先澄清、再承诺、再执行、再复盘」的工作流，追求协调而非控制，确保每个 Agent 在最擅长的领域发挥作用。\n\n核心能力：\n- 智能任务分发与 Agent 能力匹配\n- 多 Agent 编排与协调\n- 全局状态监控与健康巡检\n- 自主学习与进化（经用户确认）\n\n内置技能：\n- 创建智能体、更新智能体、删除智能体、发现智能体\n- 自我进化（Self-Evolve）\n- 任务管理（Task Management）"
+      },
+      "en-US": {
+        "name": "DesireCore",
+        "summary": "System central orchestrator: task dispatch, agent orchestration, and global state monitoring.",
+        "description": "DesireCore is the system's core agent, acting as the bridge between the user and every other Agent. It is responsible for task dispatch, agent orchestration, and global state monitoring. It follows the workflow \"clarify → commit → execute → retrospect\", aiming for coordination rather than control so each Agent can shine in its area of expertise.\n\nCore capabilities:\n- Intelligent task dispatch and Agent capability matching\n- Multi-Agent orchestration and coordination\n- Global state monitoring and health checks\n- Autonomous learning and evolution (with user confirmation)\n\nBuilt-in skills:\n- Create / Update / Delete / Discover Agents\n- Self-Evolve\n- Task Management"
+      }
+    },
+    "category": "management",
+    "tags": [
+      "system",
+      "scheduling",
+      "orchestration",
+      "official",
+      "core"
+    ]
+  },
+  "release": {
+    "state": "unknown"
+  },
+  "timestamps": {
+    "catalogUpdatedAt": {
+      "state": "known",
+      "value": "2026-08-14T17:10:12Z",
+      "precision": "second"
+    },
+    "releasePublishedAt": {
+      "state": "unknown"
+    },
+    "reviewedAt": {
+      "state": "unknown"
+    },
+    "upstreamObservedAt": {
+      "state": "unknown"
+    }
+  },
+  "provenance": {},
+  "governance": {
+    "stewardship": "official",
+    "availability": "listing-only",
+    "license": {
+      "state": "unknown"
+    },
+    "redistribution": "verify-package-terms",
+    "listingMaintainer": {
+      "name": "DesireCore Official",
+      "verified": true
+    }
+  },
+  "compatibility": {
+    "platforms": {
+      "state": "unknown"
+    }
+  },
+  "spec": {
+    "kind": "agent",
+    "installPolicy": "system",
+    "updatePolicy": "repository",
+    "persona": {
+      "role": "System central orchestrator",
+      "traits": [
+        "task dispatch",
+        "Agent orchestration",
+        "global state monitoring",
+        "coordination over control"
+      ]
+    }
+  }
+}