Add fleet ops dashboard, Calibrate enforcement, and dead-code cleanup.

Ship live alerts, pool status, AI monitor, remote agent commands, build manager, and uninstall flow; wire Calibrate settings (WS ping, pool traffic log, retention limits) at runtime and exclude server/data from git.

server/internal/alerts/notify.go

@@ -0,0 +1,83 @@
+package alerts
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/smtp"
+	"strings"
+	"time"
+)
+
+type NotifyConfig struct {
+	TelegramBotToken string
+	TelegramChatID   string
+	EmailEnabled     bool
+	SMTPHost         string
+	SMTPPort         int
+	SMTPUser         string
+	SMTPPassword     string
+	EmailTo          string
+	EmailFrom        string
+}
+
+func SendTelegram(cfg NotifyConfig, text string) error {
+	if cfg.TelegramBotToken == "" || cfg.TelegramChatID == "" {
+		return nil
+	}
+	url := fmt.Sprintf("https://api.telegram.org/bot%s/sendMessage", cfg.TelegramBotToken)
+	body, _ := json.Marshal(map[string]string{
+		"chat_id": cfg.TelegramChatID,
+		"text":    text,
+	})
+	req, err := http.NewRequest(http.MethodPost, url, bytes.NewReader(body))
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	client := &http.Client{Timeout: 15 * time.Second}
+	resp, err := client.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode >= 300 {
+		return fmt.Errorf("telegram API status %d", resp.StatusCode)
+	}
+	return nil
+}
+
+func SendEmail(cfg NotifyConfig, subject, body string) error {
+	if !cfg.EmailEnabled || cfg.SMTPHost == "" || cfg.EmailTo == "" {
+		return nil
+	}
+	from := cfg.EmailFrom
+	if from == "" {
+		from = cfg.SMTPUser
+	}
+	port := cfg.SMTPPort
+	if port <= 0 {
+		port = 587
+	}
+	addr := fmt.Sprintf("%s:%d", cfg.SMTPHost, port)
+	msg := strings.Join([]string{
+		fmt.Sprintf("From: %s", from),
+		fmt.Sprintf("To: %s", cfg.EmailTo),
+		fmt.Sprintf("Subject: %s", subject),
+		"MIME-Version: 1.0",
+		"Content-Type: text/plain; charset=UTF-8",
+		"",
+		body,
+	}, "\r\n")
+	var auth smtp.Auth
+	if cfg.SMTPUser != "" {
+		auth = smtp.PlainAuth("", cfg.SMTPUser, cfg.SMTPPassword, cfg.SMTPHost)
+	}
+	return smtp.SendMail(addr, auth, from, []string{cfg.EmailTo}, []byte(msg))
+}
+
+func NotifyAll(cfg NotifyConfig, subject, text string) {
+	_ = SendTelegram(cfg, subject+": "+text)
+	_ = SendEmail(cfg, subject, text)
+}