feat: implement 4 project type flows with unique AI experiences

- New multi-step CreateProjectFlow replaces 2-step modal with TypeSelector
  and 4 setup components (Fresh Idea, Chat Import, Code Import, Migrate)
- overview/page.tsx routes to unique main component per creationMode
- FreshIdeaMain: wraps AtlasChat with post-discovery decision banner
  (Generate PRD vs Plan MVP Test)
- ChatImportMain: 3-stage flow (intake → extracting → review) with
  editable insight buckets (decisions, ideas, questions, architecture, users)
- CodeImportMain: 4-stage flow (input → cloning → mapping → surfaces)
  with architecture map and surface selection
- MigrateMain: 5-stage flow with audit, review, planning, and migration
  plan doc with checkbox-tracked tasks and non-destructive warning banner
- New API routes: analyze-chats, analyze-repo, analysis-status,
  generate-migration-plan (all using Gemini)
- ProjectShell: accepts creationMode prop, filters/renames tabs per type
  (code-import hides PRD, migration hides PRD/Grow/Insights, renames Atlas tab)
- Right panel adapts content based on creationMode

Made-with: Cursor

app/api/projects/[projectId]/analysis-status/route.ts

@@ -0,0 +1,37 @@
+import { NextResponse } from 'next/server';
+import { getServerSession } from 'next-auth';
+import { authOptions } from '@/lib/auth/authOptions';
+import { query } from '@/lib/db-postgres';
+
+export async function GET(
+  _req: Request,
+  { params }: { params: Promise<{ projectId: string }> }
+) {
+  try {
+    const { projectId } = await params;
+    const session = await getServerSession(authOptions);
+    if (!session?.user?.email) {
+      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
+    }
+
+    const rows = await query<{ data: Record<string, unknown> }>(
+      `SELECT p.data FROM fs_projects p
+       JOIN fs_users u ON u.id = p.user_id
+       WHERE p.id = $1::text AND u.data->>'email' = $2::text LIMIT 1`,
+      [projectId, session.user.email]
+    );
+
+    if (rows.length === 0) {
+      return NextResponse.json({ error: 'Project not found' }, { status: 404 });
+    }
+
+    const data = rows[0].data ?? {};
+    const stage = (data.analysisStage as string) ?? 'cloning';
+    const analysisResult = stage === 'done' ? data.analysisResult : undefined;
+
+    return NextResponse.json({ stage, analysisResult });
+  } catch (err) {
+    console.error('[analysis-status]', err);
+    return NextResponse.json({ error: 'Internal error' }, { status: 500 });
+  }
+}