Consolidate audit-fixes branch: webhooks, integrations, and deploy hardening

Batch commit of the pending working tree on security/audit-fixes-2026-07.
Major areas:
- Outbound webhooks / Zapier: schema + signed delivery with retries, public
  v1 API (REST-hook subscribe/unsubscribe), settings UI, cron drain.
- Deploy hardening: email via SMTP2GO (Resend fully removed), verified DB TLS
  (DATABASE_SSL=require + DATABASE_CA), storage fails loud in production when
  Spaces is unconfigured instead of silently using ephemeral disk.
- Integrations & features (concurrent work): accounting (QuickBooks/Xero),
  e-signature (DocuSign/Dropbox Sign), PayPal, geocoding/maps, onboarding,
  expanded legal pages.
- DB migrations 0006–0009.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

proxy.ts

@@ -23,6 +23,7 @@ const PROTECTED_PATHS = [
   "/recommendations",
   "/impact",
   "/follow-ups",
+  "/team",
 ]
 
 const AUTH_PATHS = ["/login", "/signup", "/forgot-password"]
@@ -34,13 +35,25 @@ const AUTH_PATHS = ["/login", "/signup", "/forgot-password"]
 // `content-security-policy` request header and applies it to its own inline
 // scripts automatically.
 function buildCsp(nonce: string): string {
+  const isDev = process.env.NODE_ENV !== "production"
+
+  // In development, Next.js/React and Turbopack HMR require eval() for hot
+  // reloading and debugging features, and open a dev websocket. These are NOT
+  // added in production, where the nonce-based policy stays strict.
+  const scriptSrc = isDev
+    ? `script-src 'self' 'nonce-${nonce}' 'unsafe-eval' https://challenges.cloudflare.com`
+    : `script-src 'self' 'nonce-${nonce}' https://challenges.cloudflare.com`
+  const connectSrc = isDev
+    ? "connect-src 'self' ws: wss: https://api.stripe.com https://api.openai.com https://challenges.cloudflare.com"
+    : "connect-src 'self' https://api.stripe.com https://api.openai.com https://challenges.cloudflare.com"
+
   return [
     "default-src 'self'",
     "img-src 'self' data: blob: https:",
     "style-src 'self' 'unsafe-inline'",
-    `script-src 'self' 'nonce-${nonce}' https://challenges.cloudflare.com`,
+    scriptSrc,
     "font-src 'self' data:",
-    "connect-src 'self' https://api.stripe.com https://api.openai.com https://api.resend.com https://challenges.cloudflare.com",
+    connectSrc,
     "frame-src https://js.stripe.com https://hooks.stripe.com https://challenges.cloudflare.com",
     "frame-ancestors 'none'",
     "base-uri 'self'",