feat(tui): add SLA reporting view

Full-screen SLA report accessible via [s] from detail panel.
Computes uptime%, downtime, outage count, longest outage, MTTR,
and MTBF from state_changes table. Includes daily breakdown with
bar chart, switchable time periods (24h/7d/30d/90d), and
scrollable viewport. LATE/STALE treated as UP for SLA purposes.

internal/alert/alert.go

@@ -110,6 +110,24 @@ func gotifyPayload(priority string) PayloadFunc {
 	}
 }
 
+func opsgeniePayload(priority string) PayloadFunc {
+	return func(title, message string) ([]byte, error) {
+		return json.Marshal(map[string]any{
+			"message":     limitMessage(title, 130),
+			"description": message,
+			"source":      "uptop",
+			"priority":    priority,
+		})
+	}
+}
+
+func limitMessage(s string, max int) string {
+	if len(s) <= max {
+		return s
+	}
+	return s[:max]
+}
+
 func GetProvider(cfg models.AlertConfig) Provider {
 	switch cfg.Type {
 	case "discord":
@@ -173,6 +191,20 @@ func GetProvider(cfg models.AlertConfig) Provider {
 			Payload: gotifyPayload(priority),
 			Headers: map[string]string{"X-Gotify-Key": cfg.Settings["token"]},
 		}
+	case "opsgenie":
+		priority := "P3"
+		if p, ok := cfg.Settings["priority"]; ok && p != "" {
+			priority = p
+		}
+		apiURL := "https://api.opsgenie.com/v2/alerts"
+		if eu, ok := cfg.Settings["eu"]; ok && eu == "true" {
+			apiURL = "https://api.eu.opsgenie.com/v2/alerts"
+		}
+		return &HTTPProvider{
+			URL:     apiURL,
+			Payload: opsgeniePayload(priority),
+			Headers: map[string]string{"Authorization": "GenieKey " + cfg.Settings["api_key"]},
+		}
 	default:
 		return nil
 	}

internal/alert/alert_test.go

@@ -196,8 +196,76 @@ func TestHTTPProviderGotify(t *testing.T) {
 	}
 }
 
+func TestHTTPProviderOpsgenie(t *testing.T) {
+	var received map[string]any
+	var authHeader string
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		authHeader = r.Header.Get("Authorization")
+		json.NewDecoder(r.Body).Decode(&received)
+		w.WriteHeader(202)
+	}))
+	defer srv.Close()
+
+	p := GetProvider(models.AlertConfig{Type: "opsgenie", Settings: map[string]string{
+		"api_key":  "test-genie-key",
+		"priority": "P1",
+	}})
+	hp := p.(*HTTPProvider)
+	hp.URL = srv.URL
+
+	if err := p.Send(context.Background(), "Site Down", "mysite.com is unreachable"); err != nil {
+		t.Fatalf("Send: %v", err)
+	}
+	if authHeader != "GenieKey test-genie-key" {
+		t.Errorf("expected auth 'GenieKey test-genie-key', got '%s'", authHeader)
+	}
+	if received["message"] != "Site Down" {
+		t.Errorf("unexpected message: %v", received["message"])
+	}
+	if received["description"] != "mysite.com is unreachable" {
+		t.Errorf("unexpected description: %v", received["description"])
+	}
+	if received["source"] != "uptop" {
+		t.Errorf("expected source 'uptop', got '%v'", received["source"])
+	}
+	if received["priority"] != "P1" {
+		t.Errorf("expected priority 'P1', got '%v'", received["priority"])
+	}
+}
+
+func TestOpsgenieEUEndpoint(t *testing.T) {
+	p := GetProvider(models.AlertConfig{Type: "opsgenie", Settings: map[string]string{
+		"api_key": "key", "eu": "true",
+	}})
+	hp := p.(*HTTPProvider)
+	if hp.URL != "https://api.eu.opsgenie.com/v2/alerts" {
+		t.Errorf("expected EU URL, got '%s'", hp.URL)
+	}
+}
+
+func TestOpsgenieUSEndpoint(t *testing.T) {
+	p := GetProvider(models.AlertConfig{Type: "opsgenie", Settings: map[string]string{
+		"api_key": "key",
+	}})
+	hp := p.(*HTTPProvider)
+	if hp.URL != "https://api.opsgenie.com/v2/alerts" {
+		t.Errorf("expected US URL, got '%s'", hp.URL)
+	}
+}
+
+func TestLimitMessage(t *testing.T) {
+	short := "short"
+	if got := limitMessage(short, 130); got != short {
+		t.Errorf("expected '%s', got '%s'", short, got)
+	}
+	long := string(make([]byte, 200))
+	if got := limitMessage(long, 130); len(got) != 130 {
+		t.Errorf("expected length 130, got %d", len(got))
+	}
+}
+
 func TestGetProviderNewTypes(t *testing.T) {
-	for _, typ := range []string{"telegram", "pagerduty", "pushover", "gotify"} {
+	for _, typ := range []string{"telegram", "pagerduty", "pushover", "gotify", "opsgenie"} {
 		p := GetProvider(models.AlertConfig{Type: typ, Settings: map[string]string{
 			"token": "x", "chat_id": "1", "routing_key": "k", "user": "u", "url": "http://localhost",
 		}})

internal/monitor/monitor.go

@@ -509,6 +509,7 @@ func (e *Engine) checkPush(site models.Site) {
 	}
 
 	overdue := site.LastCheck.Add(interval)
+	staleMark := overdue.Add(grace / 2)
 	graceEnd := overdue.Add(grace)
 	now := time.Now()
 
@@ -516,6 +517,10 @@ func (e *Engine) checkPush(site models.Site) {
 		if site.Status != "DOWN" {
 			e.handleStatusChange(site, "DOWN", 0, 0, "heartbeat missed")
 		}
+	} else if now.After(staleMark) {
+		if site.Status != "STALE" {
+			e.handleStatusChange(site, "STALE", 0, 0, "heartbeat stale")
+		}
 	} else if now.After(overdue) {
 		if site.Status != "LATE" {
 			e.handleStatusChange(site, "LATE", 0, 0, "heartbeat overdue")
@@ -743,7 +748,11 @@ func (e *Engine) checkGroup(site models.Site) {
 		}
 		if child.Status == "DOWN" || child.Status == "SSL EXP" {
 			status = "DOWN"
-		} else if child.Status == "PENDING" && status != "DOWN" {
+		} else if child.Status == "STALE" && status != "DOWN" {
+			status = "STALE"
+		} else if child.Status == "LATE" && status != "DOWN" && status != "STALE" {
+			status = "LATE"
+		} else if child.Status == "PENDING" && status != "DOWN" && status != "STALE" && status != "LATE" {
 			status = "PENDING"
 		}
 	}

internal/monitor/monitor_test.go

@@ -574,6 +574,26 @@ func TestCheckPush_OverdueBecomesLate(t *testing.T) {
 	}
 }
 
+func TestCheckPush_OverdueBecomesStale(t *testing.T) {
+	ms := newMockStore()
+	e := newTestEngine(ms)
+	// interval=300, grace=150 (300/2), staleMark=overdue+75
+	// at 380s: past staleMark(375) but before graceEnd(450)
+	site := models.Site{
+		ID: 1, Name: "push", Type: "push", Status: "UP",
+		Interval:  300,
+		LastCheck: time.Now().Add(-380 * time.Second),
+	}
+	injectSite(e, site)
+
+	e.checkPush(site)
+
+	s, _ := getSite(e, 1)
+	if s.Status != "STALE" {
+		t.Errorf("expected STALE when past midpoint of grace, got %s", s.Status)
+	}
+}
+
 func TestCheckPush_WithinDeadline(t *testing.T) {
 	ms := newMockStore()
 	e := newTestEngine(ms)

internal/tui/format.go

@@ -22,6 +22,8 @@ func siteOrder(s models.Site) int {
 	switch s.Status {
 	case "DOWN", "SSL EXP":
 		return 0
+	case "STALE":
+		return 1
 	case "LATE":
 		return 1
 	case "PENDING":
@@ -142,6 +144,8 @@ func fmtStatus(status string, paused bool, inMaint bool, errCategory ErrorCatego
 		return dangerStyle.Render(status)
 	case "LATE":
 		return warnStyle.Render(status)
+	case "STALE":
+		return staleStyle.Render(status)
 	case "PENDING":
 		return subtleStyle.Render(status)
 	default:

internal/tui/tab_alerts.go

@@ -39,6 +39,10 @@ type alertFormData struct {
 	GotifyURL      string
 	GotifyToken    string
 	GotifyPriority string
+	// Opsgenie
+	OpsgenieAPIKey   string
+	OpsgeniePriority string
+	OpsgenieEU       bool
 }
 
 func fmtAlertType(t string) string {
@@ -61,6 +65,8 @@ func fmtAlertType(t string) string {
 		return lipgloss.NewStyle().Foreground(lipgloss.Color("#249DF1")).Render(t)
 	case "gotify":
 		return lipgloss.NewStyle().Foreground(lipgloss.Color("#3F8BBA")).Render(t)
+	case "opsgenie":
+		return lipgloss.NewStyle().Foreground(lipgloss.Color("#2684FF")).Render(t)
 	default:
 		return t
 	}
@@ -108,6 +114,19 @@ func fmtAlertConfig(alert struct {
 			return limitStr(url, 34)
 		}
 		return subtleStyle.Render("—")
+	case "opsgenie":
+		key := alert.Settings["api_key"]
+		if key != "" {
+			masked := key
+			if len(masked) > 8 {
+				masked = masked[:4] + "…" + masked[len(masked)-4:]
+			}
+			if alert.Settings["eu"] == "true" {
+				return limitStr(fmt.Sprintf("EU %s", masked), 34)
+			}
+			return limitStr(masked, 34)
+		}
+		return subtleStyle.Render("—")
 	default:
 		if val, ok := alert.Settings["url"]; ok {
 			return limitStr(val, 34)
@@ -238,6 +257,7 @@ func (m *Model) initAlertHuhForm() tea.Cmd {
 		NtfyPri:           "3",
 		PagerDutySeverity: "critical",
 		GotifyPriority:    "5",
+		OpsgeniePriority:  "P3",
 	}
 
 	if m.editID > 0 {
@@ -275,6 +295,10 @@ func (m *Model) initAlertHuhForm() tea.Cmd {
 					m.alertFormData.GotifyURL = alert.Settings["url"]
 					m.alertFormData.GotifyToken = alert.Settings["token"]
 					m.alertFormData.GotifyPriority = alert.Settings["priority"]
+				case "opsgenie":
+					m.alertFormData.OpsgenieAPIKey = alert.Settings["api_key"]
+					m.alertFormData.OpsgeniePriority = alert.Settings["priority"]
+					m.alertFormData.OpsgenieEU = alert.Settings["eu"] == "true"
 				}
 				break
 			}
@@ -303,6 +327,7 @@ func (m *Model) initAlertHuhForm() tea.Cmd {
 					huh.NewOption("PagerDuty", "pagerduty"),
 					huh.NewOption("Pushover", "pushover"),
 					huh.NewOption("Gotify", "gotify"),
+					huh.NewOption("Opsgenie", "opsgenie"),
 				).Value(&m.alertFormData.AlertType),
 		).Title("Alert Config"),
 		huh.NewGroup(
@@ -410,6 +435,23 @@ func (m *Model) initAlertHuhForm() tea.Cmd {
 		).Title("Gotify Settings").WithHideFunc(func() bool {
 			return m.alertFormData.AlertType != "gotify"
 		}),
+		huh.NewGroup(
+			huh.NewInput().Title("API Key").
+				Placeholder("your-opsgenie-api-key").
+				Value(&m.alertFormData.OpsgenieAPIKey),
+			huh.NewSelect[string]().Title("Priority").
+				Options(
+					huh.NewOption("Critical (P1)", "P1"),
+					huh.NewOption("High (P2)", "P2"),
+					huh.NewOption("Moderate (P3)", "P3"),
+					huh.NewOption("Low (P4)", "P4"),
+					huh.NewOption("Informational (P5)", "P5"),
+				).Value(&m.alertFormData.OpsgeniePriority),
+			huh.NewConfirm().Title("EU Instance?").
+				Value(&m.alertFormData.OpsgenieEU),
+		).Title("Opsgenie Settings").WithHideFunc(func() bool {
+			return m.alertFormData.AlertType != "opsgenie"
+		}),
 	).WithTheme(m.theme.HuhTheme())
 
 	return m.huhForm.Init()
@@ -446,6 +488,12 @@ func (m *Model) submitAlertForm() {
 		settings["url"] = d.GotifyURL
 		settings["token"] = d.GotifyToken
 		settings["priority"] = d.GotifyPriority
+	case "opsgenie":
+		settings["api_key"] = d.OpsgenieAPIKey
+		settings["priority"] = d.OpsgeniePriority
+		if d.OpsgenieEU {
+			settings["eu"] = "true"
+		}
 	default:
 		settings["url"] = d.WebhookURL
 	}

internal/tui/tab_sites.go

@@ -158,7 +158,7 @@ func (m Model) viewSitesTab() string {
 					name = limitStr(name, nameW-2)
 				}
 
-				if (site.Status == "DOWN" || site.Status == "SSL EXP" || site.Status == "LATE") && site.LastError != "" {
+				if (site.Status == "DOWN" || site.Status == "SSL EXP" || site.Status == "LATE" || site.Status == "STALE") && site.LastError != "" {
 					nameLen := len([]rune(name))
 					errSpace := nameW - nameLen - 3
 					if errSpace > 10 {

internal/tui/theme.go

@@ -22,6 +22,7 @@ type Theme struct {
 	// Semantic
 	Success lipgloss.Color
 	Warning lipgloss.Color
+	Stale   lipgloss.Color
 	Danger  lipgloss.Color
 	Info    lipgloss.Color
 	Accent  lipgloss.Color
@@ -54,6 +55,7 @@ var themeFlexokiDark = Theme{
 	Subtle:     "#6F6E69",
 	Success:    "#879A39",
 	Warning:    "#D0A215",
+	Stale:      "#DA702C",
 	Danger:     "#D14D41",
 	Info:       "#4385BE",
 	Accent:     "#3AA99F",
@@ -74,6 +76,7 @@ var themeTokyoNight = Theme{
 	Subtle:     "#565f89",
 	Success:    "#9ece6a",
 	Warning:    "#e0af68",
+	Stale:      "#ff9e64",
 	Danger:     "#f7768e",
 	Info:       "#7aa2f7",
 	Accent:     "#7dcfff",
@@ -94,6 +97,7 @@ var themeGruvbox = Theme{
 	Subtle:     "#7c6f64",
 	Success:    "#b8bb26",
 	Warning:    "#fabd2f",
+	Stale:      "#fe8019",
 	Danger:     "#fb4934",
 	Info:       "#83a598",
 	Accent:     "#8ec07c",
@@ -114,6 +118,7 @@ var themeCatppuccinMocha = Theme{
 	Subtle:     "#6c7086",
 	Success:    "#a6e3a1",
 	Warning:    "#f9e2af",
+	Stale:      "#fab387",
 	Danger:     "#f38ba8",
 	Info:       "#89b4fa",
 	Accent:     "#94e2d5",
@@ -134,6 +139,7 @@ var themeNord = Theme{
 	Subtle:     "#4c566a",
 	Success:    "#a3be8c",
 	Warning:    "#ebcb8b",
+	Stale:      "#d08770",
 	Danger:     "#bf616a",
 	Info:       "#81a1c1",
 	Accent:     "#88c0d0",

internal/tui/tui.go

@@ -20,6 +20,7 @@ var (
 	subtleStyle  lipgloss.Style
 	specialStyle lipgloss.Style
 	warnStyle    lipgloss.Style
+	staleStyle   lipgloss.Style
 	dangerStyle  lipgloss.Style
 	titleStyle   lipgloss.Style
 	activeTab    lipgloss.Style
@@ -30,6 +31,7 @@ func applyTheme(t Theme) {
 	subtleStyle = lipgloss.NewStyle().Foreground(t.Subtle)
 	specialStyle = lipgloss.NewStyle().Foreground(t.Success)
 	warnStyle = lipgloss.NewStyle().Foreground(t.Warning)
+	staleStyle = lipgloss.NewStyle().Foreground(t.Stale)
 	dangerStyle = lipgloss.NewStyle().Foreground(t.Danger)
 	titleStyle = lipgloss.NewStyle().Foreground(t.Accent).Bold(true)
 	activeTab = lipgloss.NewStyle().Border(lipgloss.NormalBorder(), false, false, true, false).BorderForeground(t.Accent).Foreground(t.Accent).Bold(true).Padding(0, 1)

internal/tui/view_detail.go

@@ -43,7 +43,7 @@ func (m Model) viewDetailPanel() string {
 	errCat := classifyError(site.LastError, site.Type, site.StatusCode)
 	row("Status", fmtStatus(site.Status, site.Paused, m.isMonitorInMaintenance(site.ID), errCat))
 
-	if (site.Status == "DOWN" || site.Status == "SSL EXP" || site.Status == "LATE") && site.LastError != "" {
+	if (site.Status == "DOWN" || site.Status == "SSL EXP" || site.Status == "LATE" || site.Status == "STALE") && site.LastError != "" {
 		errWidth := m.termWidth - chromePadH - 19
 		if errWidth < 30 {
 			errWidth = 30
@@ -105,6 +105,10 @@ func (m Model) viewDetailPanel() string {
 
 	section("ENDPOINT")
 	row("Type", site.Type)
+	if site.Type == "push" && site.Token != "" {
+		row("Token", site.Token)
+		row("Push", "curl -X POST -H 'Authorization: Bearer "+site.Token+"' <host>/api/push")
+	}
 	if site.URL != "" {
 		row("URL", site.URL)
 	}

internal/tui/view_history.go

@@ -119,9 +119,14 @@ func (m Model) buildHistoryContent() string {
 		ts := sc.ChangedAt.Format("2006-01-02 15:04")
 
 		arrow := subtleStyle.Render(sc.FromStatus) + " → "
-		if sc.ToStatus == "UP" {
+		switch sc.ToStatus {
+		case "UP":
 			arrow += specialStyle.Render(sc.ToStatus)
-		} else {
+		case "LATE":
+			arrow += warnStyle.Render(sc.ToStatus)
+		case "STALE":
+			arrow += staleStyle.Render(sc.ToStatus)
+		default:
 			arrow += dangerStyle.Render(sc.ToStatus)
 		}