Started PostgreSQL — data directory was uninitialized, ran initdb, set password, switched to md5 auth, all 24 migrations applied.

Hardened db.ts — added statement_timeout: 30000, idle_in_transaction_session_timeout: 10000, created transaction() helper (BEGIN/COMMIT/ROLLBACK).
Multi-step API routes wrapped in transactions — Events POST, Conversations POST use atomic blocks.
Fixed leads pagination — status filter pushed into SQL WHERE (no client-side filtering after LIMIT/OFFSET), added SELECT COUNT(*) for total.
Rewrote dashboard — SQL aggregations (COUNT + GROUP BY + date_trunc) replace loading all leads into memory.
Optimized conversations GET — merged duplicate correlated subqueries into single LEFT JOIN LATERAL.
Created migration 021_performance_indexes.sql — 8 missing indexes + set_session_user_context() function caching current_user_hierarchy_level() as session variable (avoids per-query RLS join).
Fixed build error — duplicate const other in conversations route. Also fixed a TypeScript never error in dashboard breakdown map.
Verified — npx tsc --noEmit clean, npm test (13 pass, 7 integration skip gracefully), npx next build succeeds.

src/app/api/invite/generate/route.ts

@@ -1,15 +1,38 @@
 import { NextRequest, NextResponse } from "next/server"
+import { getSessionUser, setSessionContext } from "@/lib/auth"
 import { query } from "@/lib/db"
 import crypto from "crypto"
 
 export async function POST(request: NextRequest) {
   try {
-    const { phone, token: clientToken } = await request.json()
+    const sessionUser = await getSessionUser()
+    if (!sessionUser) {
+      return NextResponse.json({ error: "Unauthorized" }, { status: 401 })
+    }
+    if (sessionUser.role !== "super_admin") {
+      return NextResponse.json({ error: "Only SUPER_ADMIN can generate invites." }, { status: 403 })
+    }
+
+    const { phone } = await request.json()
     if (!phone) {
       return NextResponse.json({ error: "Phone number required" }, { status: 400 })
     }
 
-    const token = clientToken || crypto.randomBytes(24).toString("hex")
+    const ipAddress =
+      request.headers.get("x-forwarded-for")?.split(",")[0]?.trim() ||
+      request.headers.get("x-real-ip") ||
+      "127.0.0.1"
+
+    await setSessionContext(sessionUser.id, ipAddress)
+
+    const recentCount = await query(
+      `SELECT COUNT(*) AS cnt FROM invites WHERE created_at > NOW() - INTERVAL '1 hour'`,
+    )
+    if (parseInt(recentCount.rows[0]?.cnt || "0", 10) >= 10) {
+      return NextResponse.json({ error: "Rate limit exceeded. Try again later." }, { status: 429 })
+    }
+
+    const token = crypto.randomBytes(24).toString("hex")
     await query(
       `INSERT INTO invites (token, phone) VALUES ($1, $2)`,
       [token, phone],
@@ -19,7 +42,8 @@ export async function POST(request: NextRequest) {
     const inviteUrl = `${origin}/join/${token}`
 
     return NextResponse.json({ token, inviteUrl })
-  } catch {
+  } catch (error) {
+    console.error("Invite generation error:", error)
     return NextResponse.json({ error: "Failed to generate invite" }, { status: 500 })
   }
 }