fix: resolve merge conflicts with main — align schemas with PR #452

- Merge origin/main (PR #452's Sentinel infra) into claude/sentinel-engine
- Remove duplicate kebab-case schema files (ai-insights.ts, ai-pr-reflections.ts, etc.)
  in favor of main's camelCase versions (aiInsights.ts, aiPrReflections.ts)
- Update all imports to use main's schema exports (learningAiInsights, etc.)
- Merge LearningAgent: keep main's pattern detection + contemplation gate,
  add Sentinel pipeline routes (/ingest, /enrich, /schedule/run, /ingest-pr)
- Remove duplicate v7 migration (LearningAgent already in v1_sentinel)
- Restore Sentinel frontend routes in App.tsx

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

Author: jmbish04

src/backend/src/ai/agents/LearningAgent.ts

@@ -16,8 +16,7 @@ import {
   type AutomationMetadata,
 } from "@/core/BaseAutomation";
 import { getDb } from "@db";
-import { aiInsights } from "@/db/schemas/github/learning/ai-insights";
-import { aiPrReflections } from "@/db/schemas/github/learning/ai-pr-reflections";
+import { learningAiInsights } from "@db/schemas/github/learning";
 import { eq, and } from "drizzle-orm";
 
 const PullRequestPayloadSchema = z.object({
@@ -91,11 +90,11 @@ export class SentinelInterceptor extends BaseAutomation<SentinelPayload> {
       const db = getDb(this.env.DB);
       const repoInsights = await db
         .select()
-        .from(aiInsights)
+        .from(learningAiInsights)
         .where(
           and(
-            eq(aiInsights.githubRepo, repoFullName),
-            eq(aiInsights.status, "IMMUNIZED")
+            eq(learningAiInsights.repo, repoFullName),
+            eq(learningAiInsights.status, "proposed")
           )
         )
         .limit(10);
@@ -128,7 +127,7 @@ export class SentinelInterceptor extends BaseAutomation<SentinelPayload> {
       const analysisPrompt = `Analyze this PR diff for architectural anti-patterns, style drift, or improvements based on these known patterns:
 
 **Known Immunized Insights for ${repoFullName}:**
-${repoInsights.map((i) => `- [${i.category}/${i.severity}] ${i.insightAnalysis?.substring(0, 200)}`).join("\n") || "None yet."}
+${repoInsights.map((i) => `- [${i.patternType}/${i.severity}] ${i.description?.substring(0, 200)}`).join("\n") || "None yet."}
 
 **Vector Similarity Matches:**
 ${vectorMatches.join("\n") || "No similar prior patterns found."}

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

@@ -14,7 +14,7 @@ import {
   type AutomationMetadata,
 } from "@/core/BaseAutomation";
 import { getDb } from "@db";
-import { aiInsightPrs } from "@/db/schemas/github/learning/ai-insight-prs";
+import { learningAiInsightPrs } from "@db/schemas/github/learning";
 
 const PullRequestClosedPayloadSchema = z.object({
   action: z.literal("closed"),
@@ -60,14 +60,14 @@ export class SentinelPostMerge extends BaseAutomation<PostMergePayload> {
       const db = getDb(this.env.DB);
 
       // Record the merged PR in the learning database
-      await db.insert(aiInsightPrs).values({
+      await db.insert(learningAiInsightPrs).values({
         id: crypto.randomUUID(),
-        repoOwner: repository.owner.login,
-        repoName: repository.name,
+        insightId: "", // Linked during analysis
         prNumber: pr.number,
-        prUrl: pr.html_url,
-        prDescription: pr.body?.substring(0, 2000),
-        outcome: "MERGED",
+        repo: `${repository.owner.login}/${repository.name}`,
+        status: "merged",
+        outcome: "merged",
+        createdAt: new Date(),
       });
 
       // Signal the LearningAgent to ingest this PR