feat(go-crm): full auth, routing, middleware, and supporting infra

- Add auth handlers (signup, login, logout, account management) with bcrypt
- Add client, customer, service, scheduling, payment, question, answer handlers
- Add dashboard, monthly report, and lead pipeline pages
- Add UTF-8 middleware to force charset on HTML responses
- Add config package with env-based overrides for DB path, secrets, endpoints
- Add parser package for WhatsApp message ingestion
- Add clean-arch layers: pkg/domain, pkg/repo, pkg/usecase for leads
- Add cmd/migrate utility for DB migrations
- Add Makefile, README, run-tests.sh, and dev scripts
- Update docker-compose.yml with memory limits
- Update .air.toml to exclude DB files and stop on errors
- Update whatsapp-sync dependencies and add src/index.js entrypoint
- Add whatsme standalone WhatsApp reader app (source only)
- Untrack .opencode-sandbox/data/go-crm.db from git history
- Expand root .gitignore: ngrok, tmp dirs, sandbox DBs, compiled binaries

apps/whatsapp-sync/src/index.js

@@ -0,0 +1,9 @@
+#!/usr/bin/env node
+
+// whatsapp-sync entrypoint stub
+// This file exists so `npm run start` and `npm run dev` do not fail.
+// To run the one-off JSONL sync: `npm run sync`
+// To start the WhatsApp->CRM integration: `node src/whatsapp-leads.js`
+
+console.log('whatsapp-sync service stub. No long-running logic implemented.');
+console.log('Use `npm run sync` to fetch messages, or `node src/whatsapp-leads.js` to start WhatsApp->CRM sync.');