refactor: move llmExtract, extractMeta, buildDescriptor, types to workflow-util-role

workflow-role-llm now only contains LLM-as-agent specifics:
  - createRole (wires agent + extract)
  - createLlmAdapter (OpenAI chat completions agent)

workflow-util-role now provides all role infrastructure:
  - decorators (decorateRole, withDryRun, onFail)
  - llmExtract / extractMetaOrThrow (structured extraction)
  - buildDescriptorFromRoles (zod → JSON Schema)
  - LlmProvider, LlmMessage types

packages/workflow-role-committer/__tests__/committer.test.ts

@@ -7,7 +7,7 @@ import { promisify } from "node:util";
 
 import type { AgentFn, ThreadContext } from "@uncaged/workflow";
 import { START } from "@uncaged/workflow";
-import * as roleLlm from "@uncaged/workflow-role-llm";
+import * as utilRole from "@uncaged/workflow-util-role";
 
 import { createCommitterRole } from "../src/committer.js";
 import { gitExec } from "../src/git-exec.js";
@@ -83,7 +83,7 @@ describe("createCommitterRole", () => {
     const { repo } = await setupRepoWithRemote();
     await appendFile(join(repo, "README.md"), "\nmore\n", "utf8");
 
-    const spy = spyOn(roleLlm, "extractMetaOrThrow").mockResolvedValue({
+    const spy = spyOn(utilRole, "extractMetaOrThrow").mockResolvedValue({
       branch: "feat/test-commit",
       message: "feat: add more",
     });

packages/workflow-role-committer/package.json

@@ -10,7 +10,6 @@
   },
   "dependencies": {
     "@uncaged/workflow": "workspace:*",
-    "@uncaged/workflow-role-llm": "workspace:*",
     "@uncaged/workflow-util-role": "workspace:*",
     "zod": "^4.0.0"
   }

packages/workflow-role-committer/src/committer.ts

@@ -1,7 +1,11 @@
 import type { AgentFn, Role, RoleResult, ThreadContext } from "@uncaged/workflow";
-import type { LlmProvider } from "@uncaged/workflow-role-llm";
-import { extractMetaOrThrow } from "@uncaged/workflow-role-llm";
-import { decorateRole, onFail, withDryRun } from "@uncaged/workflow-util-role";
+import {
+  decorateRole,
+  extractMetaOrThrow,
+  type LlmProvider,
+  onFail,
+  withDryRun,
+} from "@uncaged/workflow-util-role";
 import * as z from "zod/v4";
 
 import { gitExec } from "./git-exec.js";

packages/workflow-role-committer/tsconfig.json

@@ -6,9 +6,5 @@
     "composite": true
   },
   "include": ["src/**/*.ts"],
-  "references": [
-    { "path": "../workflow" },
-    { "path": "../workflow-role-llm" },
-    { "path": "../workflow-util-role" }
-  ]
+  "references": [{ "path": "../workflow" }, { "path": "../workflow-util-role" }]
 }