fix: resolve 4 broken import paths preventing deployment

- SentinelInterceptor.ts: @/core/BaseAutomation → @/automations/core/BaseAutomation
- SentinelPostMerge.ts: @/core/BaseAutomation → @/automations/core/BaseAutomation
- sentinel/tasks.ts: @/db/schemas/projects/tasks → @/db/schemas/projects/backlog/tasks
- stitch-loop.ts: @services/jules → @services/jules/service (no barrel file)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: jmbish04

src/backend/src/automations/pr/SentinelInterceptor.ts

@@ -14,7 +14,7 @@ import { z } from "zod";
 import {
   BaseAutomation,
   type AutomationMetadata,
-} from "@/core/BaseAutomation";
+} from "@/automations/core/BaseAutomation";
 import { getDb } from "@db";
 import { learningAiInsights } from "@db/schemas/github/learning";
 import { eq, and } from "drizzle-orm";

src/backend/src/automations/pr/SentinelPostMerge.ts

@@ -12,7 +12,7 @@ import { z } from "zod";
 import {
   BaseAutomation,
   type AutomationMetadata,
-} from "@/core/BaseAutomation";
+} from "@/automations/core/BaseAutomation";
 import { getDb } from "@db";
 import { learningAiInsightPrs } from "@db/schemas/github/learning";
 

src/backend/src/routes/api/sentinel/tasks.ts

@@ -12,7 +12,7 @@
 
 import { OpenAPIHono, createRoute, z } from "@hono/zod-openapi";
 import { getDb } from "@db";
-import { tasks, taskEvents } from "@/db/schemas/projects/tasks";
+import { tasks, taskEvents } from "@/db/schemas/projects/backlog/tasks";
 import { eq, isNull, desc } from "drizzle-orm";
 
 const app = new OpenAPIHono<{ Bindings: Env }>();

src/backend/src/workflows/planning/stitch-loop.ts

@@ -15,7 +15,7 @@ import {
   WorkflowStep,
 } from "cloudflare:workers";
 import { StitchService } from "@services/stitch";
-import { JulesService } from "@services/jules";
+import { JulesService } from "@services/jules/service";
 import type { StitchLoopParams } from "@services/stitch";
 
 const DESIGN_SYSTEM_RULES = `