Remove stats from .runtime/*.json observable state (gt-lfi2d)

Remove Stats fields from witness and refinery types that tracked
observable metrics (total counts, today counts). These are now
handled by the activity stream/beads system instead.

Removed:
- WitnessStats type and Stats field from Witness
- RefineryStats type and Stats field from Refinery
- LastCheckAt field from Witness
- Stats display from gt witness status
- Stats display from gt refinery status
- Stats increment code from refinery.completeMR()

Kept minimal process state:
- RigName, State, PID, StartedAt (both)
- MonitoredPolecats, Config, SpawnedIssues (witness)
- CurrentMR, PendingMRs, LastMergeAt (refinery)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

internal/cmd/refinery.go

@@ -277,12 +277,6 @@ func runRefineryStatus(cmd *cobra.Command, args []string) error {
 		fmt.Printf("  Last merge: %s\n", ref.LastMergeAt.Format("2006-01-02 15:04:05"))
 	}
 
-	fmt.Printf("\n  %s\n", style.Bold.Render("Statistics:"))
-	fmt.Printf("    Merged today:  %d\n", ref.Stats.TodayMerged)
-	fmt.Printf("    Failed today:  %d\n", ref.Stats.TodayFailed)
-	fmt.Printf("    Total merged:  %d\n", ref.Stats.TotalMerged)
-	fmt.Printf("    Total failed:  %d\n", ref.Stats.TotalFailed)
-
 	return nil
 }
 

internal/cmd/witness.go

@@ -259,10 +259,6 @@ func runWitnessStatus(cmd *cobra.Command, args []string) error {
 		fmt.Printf("  Started: %s\n", w.StartedAt.Format("2006-01-02 15:04:05"))
 	}
 
-	if w.LastCheckAt != nil {
-		fmt.Printf("  Last check: %s\n", w.LastCheckAt.Format("2006-01-02 15:04:05"))
-	}
-
 	// Show monitored polecats
 	fmt.Printf("\n  %s\n", style.Bold.Render("Monitored Polecats:"))
 	if len(w.MonitoredPolecats) == 0 {
@@ -273,13 +269,6 @@ func runWitnessStatus(cmd *cobra.Command, args []string) error {
 		}
 	}
 
-	fmt.Printf("\n  %s\n", style.Bold.Render("Statistics:"))
-	fmt.Printf("    Checks today:      %d\n", w.Stats.TodayChecks)
-	fmt.Printf("    Nudges today:      %d\n", w.Stats.TodayNudges)
-	fmt.Printf("    Total checks:      %d\n", w.Stats.TotalChecks)
-	fmt.Printf("    Total nudges:      %d\n", w.Stats.TotalNudges)
-	fmt.Printf("    Total escalations: %d\n", w.Stats.TotalEscalations)
-
 	return nil
 }
 

internal/refinery/manager.go

@@ -492,7 +492,7 @@ func (m *Manager) ProcessMR(mr *MergeRequest) MergeResult {
 	return result
 }
 
-// completeMR marks an MR as complete and updates stats.
+// completeMR marks an MR as complete.
 // For success, pass closeReason (e.g., CloseReasonMerged).
 // For failures that should return to open, pass empty closeReason.
 func (m *Manager) completeMR(mr *MergeRequest, closeReason CloseReason, errMsg string) {
@@ -512,16 +512,9 @@ func (m *Manager) completeMR(mr *MergeRequest, closeReason CloseReason, errMsg s
 		switch closeReason {
 		case CloseReasonMerged:
 			ref.LastMergeAt = &now
-			ref.Stats.TotalMerged++
-			ref.Stats.TodayMerged++
 		case CloseReasonSuperseded:
-			ref.Stats.TotalSkipped++
 			// Emit merge_skipped event
 			_ = events.LogFeed(events.TypeMergeSkipped, actor, events.MergePayload(mr.ID, mr.Worker, mr.Branch, "superseded"))
-		default:
-			// Other close reasons (rejected, conflict) count as failed
-			ref.Stats.TotalFailed++
-			ref.Stats.TodayFailed++
 		}
 	} else {
 		// Reopen the MR for rework (in_progress → open)
@@ -529,8 +522,6 @@ func (m *Manager) completeMR(mr *MergeRequest, closeReason CloseReason, errMsg s
 			// Log error but continue
 			fmt.Fprintf(m.output, "Warning: failed to reopen MR: %v\n", err)
 		}
-		ref.Stats.TotalFailed++
-		ref.Stats.TodayFailed++
 	}
 
 	_ = m.saveState(ref) // non-fatal: state file update

internal/refinery/types.go

@@ -44,9 +44,6 @@ type Refinery struct {
 
 	// LastMergeAt is when the last successful merge happened.
 	LastMergeAt *time.Time `json:"last_merge_at,omitempty"`
-
-	// Stats contains cumulative statistics.
-	Stats RefineryStats `json:"stats"`
 }
 
 // MergeRequest represents a branch waiting to be merged.
@@ -150,24 +147,6 @@ func DefaultMergeConfig() MergeConfig {
 	}
 }
 
-// RefineryStats contains cumulative refinery statistics.
-type RefineryStats struct {
-	// TotalMerged is the total number of successful merges.
-	TotalMerged int `json:"total_merged"`
-
-	// TotalFailed is the total number of failed merges.
-	TotalFailed int `json:"total_failed"`
-
-	// TotalSkipped is the total number of skipped MRs.
-	TotalSkipped int `json:"total_skipped"`
-
-	// TodayMerged is the number of merges today.
-	TodayMerged int `json:"today_merged"`
-
-	// TodayFailed is the number of failures today.
-	TodayFailed int `json:"today_failed"`
-}
-
 // QueueItem represents an item in the merge queue for display.
 type QueueItem struct {
 	Position  int       `json:"position"`

internal/witness/types.go

@@ -36,12 +36,6 @@ type Witness struct {
 	// MonitoredPolecats tracks polecats being monitored.
 	MonitoredPolecats []string `json:"monitored_polecats,omitempty"`
 
-	// LastCheckAt is when the last health check was performed.
-	LastCheckAt *time.Time `json:"last_check_at,omitempty"`
-
-	// Stats contains cumulative statistics.
-	Stats WitnessStats `json:"stats"`
-
 	// Config contains auto-spawn configuration.
 	Config WitnessConfig `json:"config"`
 
@@ -67,21 +61,4 @@ type WitnessConfig struct {
 	IssuePrefix string `json:"issue_prefix,omitempty"`
 }
 
-// WitnessStats contains cumulative witness statistics.
-type WitnessStats struct {
-	// TotalChecks is the total number of health checks performed.
-	TotalChecks int `json:"total_checks"`
-
-	// TotalNudges is the total number of nudges sent to polecats.
-	TotalNudges int `json:"total_nudges"`
-
-	// TotalEscalations is the total number of escalations to mayor.
-	TotalEscalations int `json:"total_escalations"`
-
-	// TodayChecks is the number of checks today.
-	TodayChecks int `json:"today_checks"`
-
-	// TodayNudges is the number of nudges today.
-	TodayNudges int `json:"today_nudges"`
-}