feat(tui): 30-day uptime timeline in inline detail panel

Statuspage-style colored bar — one █ per day, colored by uptime:
green (>= 99%), yellow (>= 95%), red (< 95%), gray (no data).
30-day percentage shown to the right.

Daily breakdown computed via ComputeDailyBreakdown from state_changes
and loaded alongside detail data in loadDetailCmd. Auto-updates on
cursor move.

internal/tui/data.go

@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"gitea.lerkolabs.com/lerkolabs/uptop/internal/models"
+	"gitea.lerkolabs.com/lerkolabs/uptop/internal/monitor"
 	"gitea.lerkolabs.com/lerkolabs/uptop/internal/store"
 	tea "github.com/charmbracelet/bubbletea"
 )
@@ -191,8 +192,19 @@ func (m *Model) loadTabDataCmd() tea.Cmd {
 // goroutine. View renders the cached result rather than querying the DB.
 func (m *Model) loadDetailCmd(siteID int) tea.Cmd {
 	eng := m.engine
+	var currentStatus models.Status
+	for _, s := range m.sites {
+		if s.ID == siteID {
+			currentStatus = s.Status
+			break
+		}
+	}
 	return func() tea.Msg {
-		return detailDataMsg{siteID: siteID, changes: eng.GetStateChanges(siteID, 5)}
+		changes := eng.GetStateChanges(siteID, 5)
+		now := time.Now()
+		allChanges := eng.GetStateChangesSince(siteID, now.Add(-30*24*time.Hour))
+		daily := monitor.ComputeDailyBreakdown(allChanges, currentStatus, 30, now)
+		return detailDataMsg{siteID: siteID, changes: changes, dailyDays: daily}
 	}
 }
 

internal/tui/messages.go

@@ -4,6 +4,7 @@ import (
 	"time"
 
 	"gitea.lerkolabs.com/lerkolabs/uptop/internal/models"
+	"gitea.lerkolabs.com/lerkolabs/uptop/internal/monitor"
 )
 
 // tabRefreshTTL bounds how often the DB-backed tab data (alerts, users, nodes,
@@ -36,6 +37,7 @@ type tabDataMsg struct {
 type detailDataMsg struct {
 	siteID    int
 	changes   []models.StateChange
+	dailyDays []monitor.DayReport
 }
 
 // historyDataMsg carries the full state-change history for the history view.

internal/tui/tui.go

@@ -199,6 +199,7 @@ type Model struct {
 	detailOpen          bool
 	detailChanges       []models.StateChange
 	detailChangesSiteID int
+	detailDailyDays     []monitor.DayReport
 
 	filterMode bool
 	filterText string

internal/tui/update.go

@@ -28,6 +28,7 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		}
 		m.detailChanges = msg.changes
 		m.detailChangesSiteID = msg.siteID
+		m.detailDailyDays = msg.dailyDays
 		return m, nil
 	case historyDataMsg:
 		if msg.siteID != m.historySiteID {
@@ -142,7 +143,7 @@ func (m *Model) handleFormMsg(msg tea.Msg) (tea.Model, tea.Cmd) {
 	return m, nil
 }
 
-const detailInlineHeight = 11
+const detailInlineHeight = 12
 
 func (m *Model) recalcLayout() {
 	chrome := chromeBase

internal/tui/uptime_timeline.go

@@ -0,0 +1,50 @@
+package tui
+
+import (
+	"fmt"
+	"strings"
+
+	"gitea.lerkolabs.com/lerkolabs/uptop/internal/monitor"
+)
+
+func (m Model) uptimeTimeline(days []monitor.DayReport, width int) string {
+	if len(days) == 0 {
+		return m.st.subtleStyle.Render("No uptime data")
+	}
+
+	maxDays := width - 10
+	if maxDays < 10 {
+		maxDays = 10
+	}
+
+	display := days
+	if len(display) > maxDays {
+		display = display[len(display)-maxDays:]
+	}
+
+	var sb strings.Builder
+	for _, d := range display {
+		ch := "█"
+		switch {
+		case d.UptimePct >= 99.0:
+			sb.WriteString(m.st.specialStyle.Render(ch))
+		case d.UptimePct >= 95.0:
+			sb.WriteString(m.st.warnStyle.Render(ch))
+		case d.UptimePct > 0:
+			sb.WriteString(m.st.dangerStyle.Render(ch))
+		default:
+			sb.WriteString(m.st.subtleStyle.Render("░"))
+		}
+	}
+
+	pct := days[len(days)-1].UptimePct
+	pctStyle := m.st.specialStyle
+	if pct < 99.0 {
+		pctStyle = m.st.dangerStyle
+	} else if pct < 99.9 {
+		pctStyle = m.st.warnStyle
+	}
+	sb.WriteString("  " + pctStyle.Render(fmt.Sprintf("%.2f%%", pct)))
+
+	return sb.String()
+}

internal/tui/view_detail_inline.go

@@ -77,6 +77,14 @@ func (m Model) viewDetailInline(width int) string {
 		}
 	}
 
+	if len(m.detailDailyDays) > 0 && m.detailChangesSiteID == site.ID {
+		timelineW := width - 4
+		if timelineW < 20 {
+			timelineW = 20
+		}
+		b.WriteString("  " + m.st.subtleStyle.Render("30d") + " " + m.uptimeTimeline(m.detailDailyDays, timelineW) + "\n")
+	}
+
 	keys := m.st.subtleStyle.Render("[h] History  [s] SLA  [e] Edit  [esc] Close")
 	b.WriteString("  " + keys + "\n")