Add AgentAd ad schemas as a LogicSRC primitive (#10)

* Add AgentAd ad schemas as a LogicSRC primitive

AgentAd is a disclosed, agent-readable advertising contract for CLI tools
and AI agents. LogicSRC owns the canonical schemas; cl1s.tech is the
reference network built on them.

- packages/schemas: agentad-{ad,placement,ad-request,ad-response,
  impression,click,campaign} schemas (id under schemas.logicsrc.com) +
  ad/placement fixtures, exported from @logicsrc/schemas
- packages/validators: register the 7 agentad kinds, wire fixture
  validation, add tests (disclosure.sponsored must be true)
- docs/agentad.md: the AgentAd spec
- README: list AgentAd under v1 priorities

Validators build clean; all fixtures validate; vitest 4/4 green.

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

* Prepare @logicsrc/schemas for npm publish

Add license, repository, homepage, keywords, publishConfig (public),
and a package README covering both the logicsrc-* core schemas and the
agentad-* family.

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

---------

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

packages/validators/src/index.test.ts

@@ -25,4 +25,27 @@ describe("LogicSRC validators", () => {
 
     expect(result.ok).toBe(false);
   });
+
+  it("validates the AgentAd ad fixture", () => {
+    const testDir = dirname(fileURLToPath(import.meta.url));
+    const file = resolve(testDir, "../../schemas/fixtures/agentad-ad.yaml");
+    const data = parseDocument(readFileSync(file, "utf8"), file);
+
+    expect(validate("agentad-ad", data).ok).toBe(true);
+  });
+
+  it("rejects an AgentAd ad that is not disclosed as sponsored", () => {
+    const result = validate("agentad-ad", {
+      type: "agentad.ad",
+      version: "0.1",
+      id: "undisclosed",
+      advertiser_did: "acme.coinpay",
+      format: "text",
+      title: "Buy now",
+      url: "https://example.com",
+      disclosure: { sponsored: false, label: "Sponsored" }
+    });
+
+    expect(result.ok).toBe(false);
+  });
 });