refactor(agent-kit): base AgentContext on ModeratorContext

AgentContext now extends ModeratorContext (start + steps) with threadId, role, store, and expanded workflow. Hermes and mock-agent read prompt/steps/systemPrompt from the new shape.

Co-authored-by: Cursor <cursoragent@cursor.com>

packages/uwf-agent-hermes/src/hermes.ts

@@ -12,14 +12,14 @@ import {
 const HERMES_COMMAND = "hermes";
 const HERMES_MAX_TURNS = 90;
 
-function buildHistorySummary(history: AgentContext["history"]): string {
-  if (history.length === 0) {
+function buildHistorySummary(steps: AgentContext["steps"]): string {
+  if (steps.length === 0) {
     return "";
   }
 
   const lines: string[] = ["## Previous Steps"];
-  for (let i = 0; i < history.length; i++) {
-    const step = history[i];
+  for (let i = 0; i < steps.length; i++) {
+    const step = steps[i];
     if (step === undefined) {
       continue;
     }
@@ -33,8 +33,10 @@ function buildHistorySummary(history: AgentContext["history"]): string {
 
 /** Assemble system prompt, task, and prior step outputs for Hermes. */
 export function buildHermesPrompt(ctx: AgentContext): string {
-  const parts: string[] = [ctx.systemPrompt, "", "## Task", ctx.prompt];
-  const historyBlock = buildHistorySummary(ctx.history);
+  const roleDef = ctx.workflow.roles[ctx.role];
+  const systemPrompt = roleDef?.systemPrompt ?? "";
+  const parts: string[] = [systemPrompt, "", "## Task", ctx.start.prompt];
+  const historyBlock = buildHistorySummary(ctx.steps);
   if (historyBlock !== "") {
     parts.push("", historyBlock);
   }

packages/uwf-agent-kit/src/context.ts

@@ -143,14 +143,13 @@ export async function buildContext(threadId: ThreadId, role: string): Promise<Ag
     fail(`unknown role "${role}" in workflow "${workflow.name}"`);
   }
 
-  const history = await buildHistory(store, chain.stepsNewestFirst);
+  const steps = await buildHistory(store, chain.stepsNewestFirst);
 
   return {
     threadId,
     role,
-    systemPrompt: roleDef.systemPrompt,
-    prompt: chain.start.prompt,
-    history,
+    start: chain.start,
+    steps,
     workflow,
     store,
   };
@@ -188,14 +187,13 @@ export async function buildContextWithMeta(
     fail(`unknown role "${role}" in workflow "${workflow.name}"`);
   }
 
-  const history = await buildHistory(store, chain.stepsNewestFirst);
+  const steps = await buildHistory(store, chain.stepsNewestFirst);
 
   return {
     threadId,
     role,
-    systemPrompt: roleDef.systemPrompt,
-    prompt: chain.start.prompt,
-    history,
+    start: chain.start,
+    steps,
     workflow,
     store,
     meta: { storageRoot, store, schemas, headHash, chain },

packages/uwf-agent-kit/src/types.ts

@@ -1,14 +1,11 @@
 import type { Store } from "@uncaged/json-cas";
-import type { StepContext, ThreadId, WorkflowPayload } from "@uncaged/uwf-protocol";
+import type { ModeratorContext, ThreadId, WorkflowPayload } from "@uncaged/uwf-protocol";
 
-export type AgentContext = {
+export type AgentContext = ModeratorContext & {
   threadId: ThreadId;
   role: string;
-  systemPrompt: string;
-  prompt: string;
-  history: StepContext[];
-  workflow: WorkflowPayload;
   store: Store;
+  workflow: WorkflowPayload;
 };
 
 export type AgentRunResult = {