refactor(bootstrap): extract bootstrap-application into orchestrator + modules

Splits the 391-line bootstrapApplication god function into a thin
orchestrator plus 7 focused modules under src/main/bootstrap/:
prepare-logger, prepare-database, prepare-services (service graph +
ipc wiring), wire-api-server (14-callback dictionary), recover-
scheduled-posts, run-startup-health-checks, recover-interrupted-tasks
(crash notification + clean-shutdown task resumption). Original
startup order, before-quit cleanup, and error handling are preserved;
the entry file drops to 153 lines.

src/main/bootstrap/recover-scheduled-posts.ts

@@ -0,0 +1,45 @@
+import type { AppDatabase } from "../database";
+
+interface Logger {
+  info: (...args: unknown[]) => void;
+  warn: (...args: unknown[]) => void;
+}
+
+export interface RecoverScheduledPostsDeps {
+  db: AppDatabase;
+  logger: Logger;
+  isQuittingRef: { current: boolean };
+  getBrowserActionService: () => { dispatchBrowserAction: (actionId: string, companyId: string) => Promise<void> } | null;
+}
+
+export function recoverScheduledPosts(deps: RecoverScheduledPostsDeps): Set<ReturnType<typeof setTimeout>> {
+  const timers = new Set<ReturnType<typeof setTimeout>>();
+  try {
+    const snapshot = deps.db.listSnapshot();
+    for (const company of snapshot.companies) {
+      const queuedActions = deps.db.listBrowserActions(company.id, { status: "queued" });
+      for (const action of queuedActions) {
+        if (!action.payloadJson) continue;
+        try {
+          const payload = JSON.parse(action.payloadJson) as { scheduledAt?: string };
+          if (!payload.scheduledAt) continue;
+          const delay = new Date(payload.scheduledAt).getTime() - Date.now();
+          if (delay <= 0) continue;
+          const timer = setTimeout(() => {
+            timers.delete(timer);
+            if (deps.isQuittingRef.current) return;
+            const browserActions = deps.getBrowserActionService();
+            if (browserActions) {
+              void browserActions.dispatchBrowserAction(action.id, company.id);
+            }
+          }, delay);
+          timers.add(timer);
+          deps.logger.info(`[bootstrap] Re-registered scheduled post timer: action ${action.id} in ${Math.round(delay / 1000)}s`);
+        } catch { /* ignore malformed payload */ }
+      }
+    }
+  } catch (error) {
+    deps.logger.warn(`[bootstrap] Failed to re-register scheduled post timers: ${error instanceof Error ? error.message : String(error)}`);
+  }
+  return timers;
+}