refactor: all-agentic architecture — roles as pure data, agent binding at runtime

BREAKING: Major architecture change.

- RoleDefinition = pure data (systemPrompt + schema + dryRunMeta)
- AgentFn = (ctx: ThreadContext) => Promise<string>, reads ctx.currentRole
- WorkflowDefinition decoupled from agents, bound via AgentBinding at runtime
- createWorkflow(def, binding, extract) replaces createRoleModerator
- Meta extraction moved into engine loop
- Delete workflow-util-role package (createRole, decorators, extract all gone)
- Role packages become pure data exports
- Agent packages updated to single-arg AgentFn

小橘 <xiaoju@shazhou.work>

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

@@ -1,11 +1,4 @@
-import type { AgentFn, Role } from "@uncaged/workflow";
-import {
-  createRole,
-  decorateRole,
-  type LlmProvider,
-  onFail,
-  withDryRun,
-} from "@uncaged/workflow-util-role";
+import type { RoleDefinition } from "@uncaged/workflow";
 import * as z from "zod/v4";
 
 export const committerMetaSchema = z.discriminatedUnion("status", [
@@ -28,69 +21,17 @@ export const committerMetaSchema = z.discriminatedUnion("status", [
 
 export type CommitterMeta = z.infer<typeof committerMetaSchema>;
 
-export type CommitterConfig = {
-  cwd: string;
+const COMMITTER_SYSTEM = `You are the git committer. Create a branch, commit the changes, and push.
+Report the branch name and commit SHA. On failure, classify as recoverable or unrecoverable.
+Do not attempt to fix failures yourself.`;
+
+export const committerRole: RoleDefinition<CommitterMeta> = {
+  description: "Creates branch, commits, and pushes when review passes.",
+  systemPrompt: COMMITTER_SYSTEM,
+  schema: committerMetaSchema,
+  dryRunMeta: {
+    status: "committed",
+    branch: "dry-run/placeholder",
+    commitSha: "0000000",
+  },
 };
-
-export const DEFAULT_COMMITTER_CONFIG: CommitterConfig = {
-  cwd: ".",
-};
-
-const DRY_RUN_COMMITTED_META: CommitterMeta = {
-  status: "committed",
-  branch: "dry-run/placeholder",
-  commitSha: "0000000",
-};
-
-function resolveExtractDryRun(extractDryRun: boolean | null): boolean {
-  return extractDryRun === true;
-}
-
-function committerSystemPrompt(config: CommitterConfig): string {
-  return `You are the git committer for this workflow. The project is at \`${config.cwd}\`.
-
-## Task
-
-Create a branch, commit the changes, and push. Report whether the push succeeded or failed, the branch name, and the commit SHA.
-
-## On failure
-
-If any git operation fails, **do not attempt to fix it yourself**. Capture the key error output and classify it:
-
-- **Recoverable**: failures that a coder can fix (lint/test hook rejection, merge conflict, commit validation errors)
-- **Unrecoverable**: failures beyond code changes (no push permission, remote not found, authentication denied, disk full)`;
-}
-
-/**
- * Git committer role: the agent runs git (branch, commit, push); structured extraction yields {@link CommitterMeta}.
- * Dry-run skips the agent and returns a stable committed placeholder; unexpected throws yield `status: "failed"`.
- */
-export function createCommitterRole(
-  adapter: AgentFn,
-  extract: { provider: LlmProvider; dryRun: boolean | null; dryRunMeta: CommitterMeta },
-  config: CommitterConfig = DEFAULT_COMMITTER_CONFIG,
-): Role<CommitterMeta> {
-  const inner: Role<CommitterMeta> = createRole({
-    name: "committer",
-    schema: committerMetaSchema,
-    systemPrompt: committerSystemPrompt(config),
-    agent: adapter,
-    extract,
-  });
-
-  return decorateRole(inner, [
-    withDryRun<CommitterMeta>({
-      label: "committer",
-      meta: DRY_RUN_COMMITTED_META,
-      dryRun: resolveExtractDryRun(extract.dryRun),
-    }),
-    onFail<CommitterMeta>({
-      label: "committer",
-      meta: {
-        status: "unrecoverable",
-        error: "committer role threw before structured result",
-        logRef: null,
-      },
-    }),
-  ]);
-}