fix: wire 9 unwired plugin hooks to core code (openclaw#14882) thanks @shtse8

Verified:
- GitHub CI checks green (non-skipped)

Co-authored-by: shtse8 <8020099+shtse8@users.noreply.github.com>

src/plugins/wired-hooks-session.test.ts

@@ -0,0 +1,74 @@
+/**
+ * Test: session_start & session_end hook wiring
+ *
+ * Tests the hook runner methods directly since session init is deeply integrated.
+ */
+import { describe, expect, it, vi } from "vitest";
+import type { PluginRegistry } from "./registry.js";
+import { createHookRunner } from "./hooks.js";
+
+function createMockRegistry(
+  hooks: Array<{ hookName: string; handler: (...args: unknown[]) => unknown }>,
+): PluginRegistry {
+  return {
+    hooks: hooks as never[],
+    typedHooks: hooks.map((h) => ({
+      pluginId: "test-plugin",
+      hookName: h.hookName,
+      handler: h.handler,
+      priority: 0,
+      source: "test",
+    })),
+    tools: [],
+    httpHandlers: [],
+    httpRoutes: [],
+    channelRegistrations: [],
+    gatewayHandlers: {},
+    cliRegistrars: [],
+    services: [],
+    providers: [],
+    commands: [],
+  } as unknown as PluginRegistry;
+}
+
+describe("session hook runner methods", () => {
+  it("runSessionStart invokes registered session_start hooks", async () => {
+    const handler = vi.fn();
+    const registry = createMockRegistry([{ hookName: "session_start", handler }]);
+    const runner = createHookRunner(registry);
+
+    await runner.runSessionStart(
+      { sessionId: "abc-123", resumedFrom: "old-session" },
+      { sessionId: "abc-123", agentId: "main" },
+    );
+
+    expect(handler).toHaveBeenCalledWith(
+      { sessionId: "abc-123", resumedFrom: "old-session" },
+      { sessionId: "abc-123", agentId: "main" },
+    );
+  });
+
+  it("runSessionEnd invokes registered session_end hooks", async () => {
+    const handler = vi.fn();
+    const registry = createMockRegistry([{ hookName: "session_end", handler }]);
+    const runner = createHookRunner(registry);
+
+    await runner.runSessionEnd(
+      { sessionId: "abc-123", messageCount: 42 },
+      { sessionId: "abc-123", agentId: "main" },
+    );
+
+    expect(handler).toHaveBeenCalledWith(
+      { sessionId: "abc-123", messageCount: 42 },
+      { sessionId: "abc-123", agentId: "main" },
+    );
+  });
+
+  it("hasHooks returns true for registered session hooks", () => {
+    const registry = createMockRegistry([{ hookName: "session_start", handler: vi.fn() }]);
+    const runner = createHookRunner(registry);
+
+    expect(runner.hasHooks("session_start")).toBe(true);
+    expect(runner.hasHooks("session_end")).toBe(false);
+  });
+});