chore: reorganize repo — legacy packages to legacy-packages/, templates to examples/

- Move 15 old workflow-* packages to legacy-packages/ (inactive, preserved for reference)
- Rename templates/ → examples/ for clarity
- Rewrite docs/architecture.md to reflect current uwf architecture
- Active packages remain in packages/: cli-uwf, uwf-agent-hermes, uwf-agent-kit, uwf-moderator, uwf-protocol, workflow-util

小橘 🍊（NEKO Team）

packages/workflow-agent-hermes/__tests__/hermes-agent.test.ts

@@ -1,48 +0,0 @@
-import { describe, expect, test } from "bun:test";
-import { createHermesAgent, validateHermesAgentConfig } from "../src/index.js";
-
-describe("validateHermesAgentConfig", () => {
-  test("accepts valid config", () => {
-    const r = validateHermesAgentConfig({
-      command: "/usr/local/bin/hermes",
-      model: null,
-      timeout: null,
-    });
-    expect(r.ok).toBe(true);
-  });
-
-  test("rejects non-absolute command", () => {
-    const r = validateHermesAgentConfig({
-      command: "hermes",
-      model: null,
-      timeout: null,
-    });
-    expect(r.ok).toBe(false);
-    if (!r.ok) {
-      expect(r.error).toContain("absolute path");
-    }
-  });
-
-  test("rejects negative timeout", () => {
-    const r = validateHermesAgentConfig({
-      command: "/usr/local/bin/hermes",
-      model: null,
-      timeout: -5,
-    });
-    expect(r.ok).toBe(false);
-    if (!r.ok) {
-      expect(r.error).toContain("timeout");
-    }
-  });
-});
-
-describe("createHermesAgent", () => {
-  test("returns an AdapterFn even with invalid config (validation deferred to call)", () => {
-    const agent = createHermesAgent({
-      command: "/usr/local/bin/hermes",
-      model: null,
-      timeout: -5,
-    });
-    expect(typeof agent).toBe("function");
-  });
-});