feat(09-01): define granular event types, IPC channels, entity getters, and Zustand patch methods

- Add 5 granular event interfaces (TaskUpdated, RunUpdated, ApprovalUpdated, AgentUpdated, BudgetChanged) to DesktopEvent union
- Add 4 entity getter IPC channels (getTask, getAgent, getRun, getApproval) with Zod validation and company ownership checks
- Add getRun method to AppDatabase following existing getTask pattern
- Add 4 preload bridge methods for entity getters
- Add 8 patch/remove methods and refreshBadges to CompanySlice
- Add selective-ipc.test.ts with exhaustive union type tests
- Extend store.test.ts with 14 patch method tests

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

src/shared/types.ts

@@ -385,6 +385,35 @@ export interface NotificationClickEvent {
   entityId?: string;
 }
 
+export interface TaskUpdatedEvent {
+  type: "task-updated";
+  taskId: string;
+  action: "created" | "updated" | "deleted";
+}
+
+export interface RunUpdatedEvent {
+  type: "run-updated";
+  runId: string;
+  action: "created" | "status_changed" | "completed";
+}
+
+export interface ApprovalUpdatedEvent {
+  type: "approval-updated";
+  approvalId: string;
+  action: "created" | "decided" | "deleted";
+}
+
+export interface AgentUpdatedEvent {
+  type: "agent-updated";
+  agentId: string;
+  action: "updated" | "paused";
+}
+
+export interface BudgetChangedEvent {
+  type: "budget-changed";
+  companyId: string;
+}
+
 export type DesktopEvent =
   | LogChunkEvent
   | DomainChangedEvent
@@ -394,7 +423,12 @@ export type DesktopEvent =
   | AgentMessageEvent
   | AutomationFiredEvent
   | NewMessageEvent
-  | NotificationClickEvent;
+  | NotificationClickEvent
+  | TaskUpdatedEvent
+  | RunUpdatedEvent
+  | ApprovalUpdatedEvent
+  | AgentUpdatedEvent
+  | BudgetChangedEvent;
 
 export type InboxItemType = "pending_approval" | "failed_run" | "budget_warning" | "blocked_task" | "review_needed" | "agent_message";