refactor(contracts,agent): single capability spec and agent run event definitions in contracts

B3: CapabilityDescriptor gains replay; CapabilitySpec + capabilitySpec(id) assemble
CAPABILITY_CATALOG + CAPABILITY_IO; drop CapabilityDefinition/CapabilityRisk. agent
registry registers contracts CapabilitySpec (kind/allowedKinds instead of its own
scope enum; approve also requires authorize). AgentRun port renamed AgentRunHandle.

B9: contracts AgentRunEvent/AgentRunEventBody/AgentRunEventRow/AgentUsageTotals with
row and SSE mapping helpers; agent onEvent receives AgentRunEvent, delivered serially
in seq order, firstSeq continues numbering across processes.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

packages/contracts/test/agent-events.test.ts

@@ -0,0 +1,66 @@
+import { describe, expect, it } from "vitest";
+import * as C from "../src/index.ts";
+
+const RUN = "7f0f5d64-6a39-4a4e-9a86-0d3a2f1e8b11";
+const AT = "2026-09-27T00:00:00.000Z";
+const usage = { inputTokens: 1, outputTokens: 2, cacheReadTokens: 0, cacheWriteTokens: 0, totalTokens: 3, costUsd: 0 };
+
+const samples: C.AgentRunEventBody[] = [
+  { type: "run_started", goal: "g", resumed: false },
+  { type: "text_delta", delta: "hi" },
+  { type: "thinking_delta", delta: "..." },
+  { type: "tool_call_start", toolCallId: "t1", capabilityId: "inventory.query", inputSummary: "{}", recovery: false },
+  {
+    type: "tool_call_end",
+    toolCallId: "t1",
+    capabilityId: "inventory.query",
+    isError: true,
+    outputSummary: "x",
+    recovery: false,
+  },
+  { type: "tool_call_rejected", toolCallId: "t2", toolName: "bash", reason: "不在白名单" },
+  { type: "compaction", phase: "end", reason: "threshold", status: "completed" },
+  { type: "run_completed", finalText: "done", usage },
+  { type: "run_failed", reason: "budget", message: "超预算", usage, budget: "tokens" },
+];
+
+describe("agent 运行事件", () => {
+  it("样例覆盖全部 9 种事件类型", () => {
+    expect(samples.map((s) => s.type).sort()).toEqual([...C.AgentRunEventType.options].sort());
+  });
+
+  it("行往返无损,且行 schema 合法", () => {
+    samples.forEach((body, seq) => {
+      const e = { ...body, runId: RUN, seq, at: AT } as C.AgentRunEvent;
+      expect(C.AgentRunEvent.safeParse(e).success, body.type).toBe(true);
+      const row = C.agentRunEventToRow(e);
+      expect(C.AgentRunEventRow.safeParse(row).success, body.type).toBe(true);
+      expect(row.payload).not.toHaveProperty("type");
+      expect(C.agentRunEventFromRow(row)).toEqual(e);
+    });
+  });
+
+  it("映射到全局 SSE 事件:tool phase / run status,且 payload 合法", () => {
+    const bus = samples.map((body, seq) =>
+      C.agentRunEventToBusEvent({ ...body, runId: RUN, seq, at: AT } as C.AgentRunEvent),
+    );
+    expect(
+      bus.map((b) =>
+        b
+          ? `${b.type}:${"phase" in b.payload ? b.payload.phase : "status" in b.payload ? b.payload.status : ""}`
+          : null,
+      ),
+    ).toEqual([
+      "agent.run_status:running",
+      "agent.text_delta:",
+      null,
+      "agent.tool_call:started",
+      "agent.tool_call:failed",
+      "agent.tool_call:denied",
+      null,
+      "agent.run_status:succeeded",
+      "agent.run_status:budget_exceeded",
+    ]);
+    for (const b of bus) if (b) expect(C.parseEventPayload(b.type, b.payload), b.type).not.toBeNull();
+  });
+});