feat: Phase 2.7+3 — full integration, config update, systemd unit

- Wire all goroutines in main.go: watcher, quota monitor, account
  switcher, dispatcher, janitor, and 10s state flush loop
- Add missing sections to config.example.yaml: notifications,
  dispatcher, watcher, janitor
- Add scripts/claude-failover.service systemd unit

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cmd/claude-failover/main.go

@@ -8,12 +8,19 @@ import (
 	"os"
 	"os/signal"
 	"syscall"
+	"time"
 
 	"forge.secuaas.ovh/olivier/claude-failover/internal/api"
 	"forge.secuaas.ovh/olivier/claude-failover/internal/config"
+	"forge.secuaas.ovh/olivier/claude-failover/internal/dispatcher"
+	"forge.secuaas.ovh/olivier/claude-failover/internal/janitor"
 	"forge.secuaas.ovh/olivier/claude-failover/internal/lifecycle"
+	"forge.secuaas.ovh/olivier/claude-failover/internal/notify"
+	"forge.secuaas.ovh/olivier/claude-failover/internal/quota"
 	"forge.secuaas.ovh/olivier/claude-failover/internal/state"
+	"forge.secuaas.ovh/olivier/claude-failover/internal/switcher"
 	"forge.secuaas.ovh/olivier/claude-failover/internal/tmux"
+	"forge.secuaas.ovh/olivier/claude-failover/internal/watcher"
 )
 
 const version = "0.1.0"
@@ -53,6 +60,43 @@ func main() {
 
 	go lm.Run(ctx)
 
+	// Notifier — reads credentials from environment variables.
+	notifier := notify.New(cfg)
+
+	// Session Watcher — detects when sessions finish their tasks.
+	sw := watcher.New(tmuxClient, s, cfg)
+	go sw.Run(ctx)
+
+	// Quota Monitor — polls panes for quota exhaustion signals.
+	qm := quota.New(tmuxClient, s, cfg)
+	go qm.Run(ctx)
+
+	// Account Switcher — orchestrates account failover on quota exhaustion.
+	as := switcher.New(tmuxClient, s, cfg, qm.SwitchChan(), notifier)
+	go as.Run(ctx)
+
+	// Dispatcher — assigns inbox tasks to idle sessions.
+	disp := dispatcher.New(tmuxClient, s, cfg, sw.DoneChan())
+	go disp.Run(ctx)
+
+	// Janitor — periodic cleanup of orphaned files and stale status.json.
+	jan := janitor.New(s, cfg.Dispatcher.ProjectsDir)
+	go jan.Run(ctx)
+
+	// State flush loop — persists state to disk every 10 seconds.
+	go func() {
+		ticker := time.NewTicker(10 * time.Second)
+		defer ticker.Stop()
+		for {
+			select {
+			case <-ctx.Done():
+				return
+			case <-ticker.C:
+				s.Flush() //nolint:errcheck
+			}
+		}
+	}()
+
 	// Start HTTP API server.
 	listenAddr := cfg.MCPHTTP.Listen
 	if listenAddr == "" {
@@ -65,7 +109,8 @@ func main() {
 			os.Exit(1)
 		}
 	}()
-	log.Printf("claude-failover v%s started, API on %s", version, listenAddr)
+
+	log.Printf("claude-failover v%s — all goroutines running", version)
 
 	<-ctx.Done()
 	log.Printf("shutdown signal received — flushing state and exiting")