Initial commit: email-openclaw bridge v1

Full pipeline: IMAP ingress -> OpenClaw dispatch -> callback -> SMTP reply.
SQLite stateful storage with idempotency, threading, and retry logic.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

cmd/bridge/main.go

@@ -0,0 +1,77 @@
+package main
+
+import (
+	"context"
+	"log/slog"
+	"os"
+	"os/signal"
+	"sync"
+	"syscall"
+
+	"thuanle.me/claw-email-bridge/internal/ai_client"
+	"thuanle.me/claw-email-bridge/internal/api"
+	"thuanle.me/claw-email-bridge/internal/config"
+	"thuanle.me/claw-email-bridge/internal/database"
+	"thuanle.me/claw-email-bridge/internal/logging"
+	"thuanle.me/claw-email-bridge/internal/mail"
+)
+
+func main() {
+	logging.Setup()
+
+	cfg, err := config.Load()
+	if err != nil {
+		slog.Error("failed to load config", "error", err)
+		os.Exit(1)
+	}
+	slog.Info("config loaded successfully")
+
+	db, err := database.Open("data/database.db")
+	if err != nil {
+		slog.Error("failed to open database", "error", err)
+		os.Exit(1)
+	}
+	slog.Info("database ready", "path", "data/database.db")
+
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	// Graceful shutdown on SIGINT/SIGTERM.
+	sigCh := make(chan os.Signal, 1)
+	signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)
+	go func() {
+		sig := <-sigCh
+		slog.Info("received signal, shutting down", "signal", sig)
+		cancel()
+	}()
+
+	var wg sync.WaitGroup
+
+	// Start IMAP watcher with OpenClaw dispatch.
+	dispatcher := ai_client.NewDispatcher(cfg, db)
+	watcher := mail.NewIMAPWatcher(cfg, db)
+	watcher.OnReceived = func(task *database.Task) {
+		go dispatcher.Dispatch(task)
+	}
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		watcher.Run(ctx)
+	}()
+
+	// Start HTTP server with SMTP egress on callback.
+	smtpSender := mail.NewSMTPSender(cfg, db)
+	router := api.NewRouter(db, cfg.BridgeCallbackToken, smtpSender.SendReplyFunc())
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		slog.Info("starting HTTP server", "addr", cfg.ListenAddr)
+		if err := router.Run(cfg.ListenAddr); err != nil {
+			slog.Error("server exited with error", "error", err)
+			cancel()
+		}
+	}()
+
+	wg.Wait()
+	slog.Info("bridge stopped")
+}