feat: add agent stats & metadata to manifest (#1501)

Enrich each agent entry with curated metadata fields: creator, repo,
license, created/added dates, GitHub stars, language, runtime, category,
tagline, and tags. This helps users compare and choose agents.

- Extend AgentDef interface with 12 optional metadata fields
- Add metadata to all 6 agents in manifest.json
- Add type validation tests for new fields
- Bump CLI version 0.5.12 → 0.5.13

Co-authored-by: lab <6723574+louisgv@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

cli/src/__tests__/manifest-type-contracts.test.ts

@@ -421,6 +421,102 @@ describe("Interactive prompts structure", () => {
   }
 });
 
+// ── Agent metadata field types ────────────────────────────────────────
+
+describe("Agent metadata field types (when present)", () => {
+  for (const [key, agent] of allAgents) {
+    const a = agent as any;
+
+    if (a.creator !== undefined) {
+      it(`agent "${key}" creator should be a non-empty string`, () => {
+        expect(typeof a.creator).toBe("string");
+        expect(a.creator.length).toBeGreaterThan(0);
+      });
+    }
+
+    if (a.repo !== undefined) {
+      it(`agent "${key}" repo should match owner/repo format`, () => {
+        expect(typeof a.repo).toBe("string");
+        expect(a.repo).toMatch(/^[A-Za-z0-9._-]+\/[A-Za-z0-9._-]+$/);
+      });
+    }
+
+    if (a.license !== undefined) {
+      it(`agent "${key}" license should be a non-empty string`, () => {
+        expect(typeof a.license).toBe("string");
+        expect(a.license.length).toBeGreaterThan(0);
+      });
+    }
+
+    if (a.created !== undefined) {
+      it(`agent "${key}" created should be YYYY-MM format`, () => {
+        expect(typeof a.created).toBe("string");
+        expect(a.created).toMatch(/^\d{4}-\d{2}$/);
+      });
+    }
+
+    if (a.added !== undefined) {
+      it(`agent "${key}" added should be YYYY-MM format`, () => {
+        expect(typeof a.added).toBe("string");
+        expect(a.added).toMatch(/^\d{4}-\d{2}$/);
+      });
+    }
+
+    if (a.github_stars !== undefined) {
+      it(`agent "${key}" github_stars should be a non-negative number`, () => {
+        expect(typeof a.github_stars).toBe("number");
+        expect(a.github_stars).toBeGreaterThanOrEqual(0);
+        expect(Number.isInteger(a.github_stars)).toBe(true);
+      });
+    }
+
+    if (a.stars_updated !== undefined) {
+      it(`agent "${key}" stars_updated should be YYYY-MM-DD format`, () => {
+        expect(typeof a.stars_updated).toBe("string");
+        expect(a.stars_updated).toMatch(/^\d{4}-\d{2}-\d{2}$/);
+      });
+    }
+
+    if (a.language !== undefined) {
+      it(`agent "${key}" language should be a non-empty string`, () => {
+        expect(typeof a.language).toBe("string");
+        expect(a.language.length).toBeGreaterThan(0);
+      });
+    }
+
+    if (a.runtime !== undefined) {
+      it(`agent "${key}" runtime should be a non-empty string`, () => {
+        expect(typeof a.runtime).toBe("string");
+        expect(a.runtime.length).toBeGreaterThan(0);
+      });
+    }
+
+    if (a.category !== undefined) {
+      it(`agent "${key}" category should be cli, tui, or ide-extension`, () => {
+        expect(typeof a.category).toBe("string");
+        expect(["cli", "tui", "ide-extension"]).toContain(a.category);
+      });
+    }
+
+    if (a.tagline !== undefined) {
+      it(`agent "${key}" tagline should be a non-empty string`, () => {
+        expect(typeof a.tagline).toBe("string");
+        expect(a.tagline.length).toBeGreaterThan(0);
+      });
+    }
+
+    if (a.tags !== undefined) {
+      it(`agent "${key}" tags should be an array of non-empty strings`, () => {
+        expect(Array.isArray(a.tags)).toBe(true);
+        for (const tag of a.tags) {
+          expect(typeof tag).toBe("string");
+          expect(tag.length).toBeGreaterThan(0);
+        }
+      });
+    }
+  }
+});
+
 // ── Config files structure ────────────────────────────────────────────────
 
 describe("Config files structure", () => {

cli/src/manifest.ts

@@ -19,6 +19,18 @@ export interface AgentDef {
   notes?: string;
   icon?: string;
   featured_cloud?: string[];
+  creator?: string;
+  repo?: string;
+  license?: string;
+  created?: string;
+  added?: string;
+  github_stars?: number;
+  stars_updated?: string;
+  language?: string;
+  runtime?: string;
+  category?: string;
+  tagline?: string;
+  tags?: string[];
 }
 
 export interface CloudDef {