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/go-crm/cmd/migrate/main.go

@@ -0,0 +1,28 @@
+// Command migrate applies schema changes and sanitizes legacy data.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+
+	"go-crm/config"
+	"go-crm/internal/db"
+)
+
+func main() {
+	dbPath := flag.String("db", config.DatabasePath(), "path to SQLite database file")
+	flag.Parse()
+
+	database, err := db.Init(*dbPath)
+	if err != nil {
+		log.Fatalf("migration failed: %v", err)
+	}
+	defer func() {
+		if err := database.Close(); err != nil {
+			log.Printf("warning: closing database: %v", err)
+		}
+	}()
+
+	fmt.Println("Migration complete. Schema ensured and legacy encodings for lead_statuses & service_keywords fixed.")
+}