feat(04-01): refactor all notify() call sites to use structured NotificationOptions

- Change ipc-support.ts notify() from (title, body) to (options: NotificationOptions)
- Wire createNotificationService in bootstrap-application.ts with lazy service graph refs
- Update all 12 call sites with entity context, urgency, navigation, and batch keys
- Update dependency interfaces in service-graph, worker, orchestration, automation, updater, desktop-shell
- No string-based notify() calls remain in src/main/

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

src/main/orchestration-service.ts

@@ -3,6 +3,7 @@ import type { AppDatabase } from "./database";
 import { getConnectorExecutionReadinessIssue } from "@shared/connector-policy";
 import type { DesktopResult } from "@shared/contracts";
 import type { ConnectorRecord } from "@shared/types";
+import type { NotificationOptions } from "./notification-service";
 
 type WorkspaceLockMode = "exclusive" | "shared" | "none";
 
@@ -53,7 +54,7 @@ interface OrchestrationDependencies {
     error: (...args: unknown[]) => void;
   };
   publishDomainChanged: () => void;
-  notify: (title: string, body: string) => void;
+  notify: (options: NotificationOptions) => void;
   createRunToken: (agentId: string, companyId: string, runId: string) => string;
   getApiPort: () => number;
   dispatchAutomation: (trigger: string, ctx: AutomationDispatch) => void;
@@ -128,7 +129,13 @@ export function createOrchestrationService({
       entityId: agent.id,
       detail: `Budget exhausted at ${agent.spentMonthlyUsd.toFixed(2)} / ${agent.budgetMonthlyUsd.toFixed(2)} USD.`,
     });
-    notify("Agent paused for budget limit", agent.name);
+    notify({
+      title: "Agent Paused",
+      body: `${agent.name} paused -- budget limit reached`,
+      urgency: "informational",
+      navigation: { section: "agents", entityId: agent.id },
+      batchKey: "agent_paused",
+    });
     publishDomainChanged();
     return true;
   }