feat(06-02): wire token usage tracking, session accumulation, and rotation into worker pipeline

- Add inputTokens/outputTokens fields to worker run-finished messages and workerMessageSchema
- Wire sessionService into WorkerServiceDependencies and ServiceGraph lazy slot
- Add token accumulation and rotation evaluation in run-finished handler
- Add 7 wiring integration tests verifying accumulation, rotation, and guard paths

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/main/service-graph.ts

@@ -14,6 +14,7 @@ import { createWorkerService } from "./worker-service";
 import { createAppLifecycleService } from "./app-lifecycle-service";
 import { createSkillService } from "./skill-service";
 import { createBudgetEnforcementService } from "./budget-enforcement-service";
+import { createSessionManagementService } from "./session-management-service";
 import type { DesktopEvent, RunRecord } from "@shared/types";
 import type { AutomationEventContext } from "./automation-service";
 import type { NotificationOptions } from "./notification-service";
@@ -72,6 +73,7 @@ export function createServiceGraph({
   let appLifecycleService: ReturnType<typeof createAppLifecycleService> | null = null;
   let skillService: ReturnType<typeof createSkillService> | null = null;
   let budgetEnforcementService: ReturnType<typeof createBudgetEnforcementService> | null = null;
+  let sessionManagementService: ReturnType<typeof createSessionManagementService> | null = null;
 
   function getOrCreateSkillService() {
     if (!skillService) {
@@ -96,6 +98,16 @@ export function createServiceGraph({
     return budgetEnforcementService;
   }
 
+  function getOrCreateSessionManagementService() {
+    if (!sessionManagementService) {
+      sessionManagementService = createSessionManagementService({
+        db,
+        logger,
+      });
+    }
+    return sessionManagementService;
+  }
+
   const wakeAgentIfPossible =(agentId: string | null | undefined, companyId: string, trigger: string) => {
     if (!orchestrationService) {
       throw new Error("Orchestration service is not initialized.");
@@ -192,6 +204,7 @@ export function createServiceGraph({
       processRunCompletion: (run, event) => processRunCompletion(run, event),
       notify,
       budgetService: getOrCreateBudgetEnforcementService(),
+      sessionService: getOrCreateSessionManagementService(),
     });
 
     orchestrationService = createOrchestrationService({
@@ -281,6 +294,7 @@ export function createServiceGraph({
         appLifecycleService = null;
         skillService = null;
         budgetEnforcementService = null;
+        sessionManagementService = null;
         db.close();
         // Force exit after grace period — covers all platforms (macOS Dock, Windows tray, Linux)
         // Worker child processes (claude/codex CLI) may keep the event loop alive indefinitely
@@ -302,5 +316,6 @@ export function createServiceGraph({
     getAppLifecycleService: () => appLifecycleService,
     getOrCreateSkillService,
     getOrCreateBudgetEnforcementService,
+    getOrCreateSessionManagementService,
   };
 }