Add deployment improvements and UI enhancements

- Clone specific commit SHA from webhook instead of just branch HEAD
- Log webhook payload in deployment logs
- Add build/deploy timing to ntfy and Slack notifications
- Implement container rollback on deploy failure
- Remove old container only after successful deployment
- Show relative times in deployment history (hover for full date)
- Update port mappings UI with labeled text inputs
- Add footer with version info, license, and repo link
- Format deploy key comment as upaas_DATE_appname

internal/service/notify/notify.go

@@ -27,6 +27,12 @@ const (
 	httpStatusClientError = 400
 )
 
+// Display constants.
+const (
+	shortCommitLength = 12
+	secondsPerMinute  = 60
+)
+
 // Sentinel errors for notification failures.
 var (
 	// ErrNtfyFailed indicates the ntfy notification request failed.
@@ -64,10 +70,16 @@ func New(_ fx.Lifecycle, params ServiceParams) (*Service, error) {
 func (svc *Service) NotifyBuildStart(
 	ctx context.Context,
 	app *models.App,
-	_ *models.Deployment,
+	deployment *models.Deployment,
 ) {
 	title := "Build started: " + app.Name
 	message := "Building from branch " + app.Branch
+
+	if deployment.CommitSHA.Valid {
+		shortSHA := deployment.CommitSHA.String[:minInt(shortCommitLength, len(deployment.CommitSHA.String))]
+		message += " at " + shortSHA
+	}
+
 	svc.sendNotifications(ctx, app, title, message, "info")
 }
 
@@ -75,10 +87,12 @@ func (svc *Service) NotifyBuildStart(
 func (svc *Service) NotifyBuildSuccess(
 	ctx context.Context,
 	app *models.App,
-	_ *models.Deployment,
+	deployment *models.Deployment,
 ) {
+	duration := time.Since(deployment.StartedAt)
 	title := "Build success: " + app.Name
-	message := "Image built successfully from branch " + app.Branch
+	message := "Image built successfully in " + formatDuration(duration)
+
 	svc.sendNotifications(ctx, app, title, message, "success")
 }
 
@@ -86,11 +100,13 @@ func (svc *Service) NotifyBuildSuccess(
 func (svc *Service) NotifyBuildFailed(
 	ctx context.Context,
 	app *models.App,
-	_ *models.Deployment,
+	deployment *models.Deployment,
 	buildErr error,
 ) {
+	duration := time.Since(deployment.StartedAt)
 	title := "Build failed: " + app.Name
-	message := "Build failed: " + buildErr.Error()
+	message := "Build failed after " + formatDuration(duration) + ": " + buildErr.Error()
+
 	svc.sendNotifications(ctx, app, title, message, "error")
 }
 
@@ -98,10 +114,17 @@ func (svc *Service) NotifyBuildFailed(
 func (svc *Service) NotifyDeploySuccess(
 	ctx context.Context,
 	app *models.App,
-	_ *models.Deployment,
+	deployment *models.Deployment,
 ) {
+	duration := time.Since(deployment.StartedAt)
 	title := "Deploy success: " + app.Name
-	message := "Successfully deployed from branch " + app.Branch
+	message := "Successfully deployed in " + formatDuration(duration)
+
+	if deployment.CommitSHA.Valid {
+		shortSHA := deployment.CommitSHA.String[:minInt(shortCommitLength, len(deployment.CommitSHA.String))]
+		message += " (commit " + shortSHA + ")"
+	}
+
 	svc.sendNotifications(ctx, app, title, message, "success")
 }
 
@@ -109,14 +132,37 @@ func (svc *Service) NotifyDeploySuccess(
 func (svc *Service) NotifyDeployFailed(
 	ctx context.Context,
 	app *models.App,
-	_ *models.Deployment,
+	deployment *models.Deployment,
 	deployErr error,
 ) {
+	duration := time.Since(deployment.StartedAt)
 	title := "Deploy failed: " + app.Name
-	message := "Deployment failed: " + deployErr.Error()
+	message := "Deployment failed after " + formatDuration(duration) + ": " + deployErr.Error()
+
 	svc.sendNotifications(ctx, app, title, message, "error")
 }
 
+// formatDuration formats a duration for display.
+func formatDuration(d time.Duration) string {
+	if d < time.Minute {
+		return fmt.Sprintf("%ds", int(d.Seconds()))
+	}
+
+	minutes := int(d.Minutes())
+	seconds := int(d.Seconds()) % secondsPerMinute
+
+	return fmt.Sprintf("%dm %ds", minutes, seconds)
+}
+
+// minInt returns the smaller of two integers.
+func minInt(a, b int) int {
+	if a < b {
+		return a
+	}
+
+	return b
+}
+
 func (svc *Service) sendNotifications(
 	ctx context.Context,
 	app *models.App,
@@ -153,7 +199,7 @@ func (svc *Service) sendNotifications(
 			// even if the parent context is cancelled.
 			notifyCtx := context.WithoutCancel(ctx)
 
-			slackErr := svc.sendSlack(notifyCtx, slackWebhook, title, message)
+			slackErr := svc.sendSlack(notifyCtx, slackWebhook, title, message, priority)
 			if slackErr != nil {
 				svc.log.Error(
 					"failed to send slack notification",
@@ -213,6 +259,19 @@ func (svc *Service) ntfyPriority(priority string) string {
 	}
 }
 
+func (svc *Service) slackColor(priority string) string {
+	switch priority {
+	case "error":
+		return "#dc3545" // red
+	case "success":
+		return "#28a745" // green
+	case "info":
+		return "#17a2b8" // blue
+	default:
+		return "#6c757d" // gray
+	}
+}
+
 // SlackPayload represents a Slack webhook payload.
 type SlackPayload struct {
 	Text        string            `json:"text"`
@@ -228,7 +287,7 @@ type SlackAttachment struct {
 
 func (svc *Service) sendSlack(
 	ctx context.Context,
-	webhookURL, title, message string,
+	webhookURL, title, message, priority string,
 ) error {
 	svc.log.Debug(
 		"sending slack notification",
@@ -239,7 +298,7 @@ func (svc *Service) sendSlack(
 	payload := SlackPayload{
 		Attachments: []SlackAttachment{
 			{
-				Color: "#36a64f",
+				Color: svc.slackColor(priority),
 				Title: title,
 				Text:  message,
 			},