feat(ultracode): master-detail tab for Workflow/ultracode run visualization

Opt-in (showUltracodeAgents, default OFF) panel that visualizes ultracode /
Workflow-tool runs like Claude Code's "working agents" TUI: LEFT = runs + phases
(selectable tasks), RIGHT = each run's agents with model, live state, tokens
burned, and tool calls.

Standalone — ZERO edits to subagent-watcher.ts. A new workflow-run-watcher.ts
singleton globs the run-state tree (~/.claude/projects/*/*/workflows/wf_*.json,
disjoint from the transcript tree), strips the heavy script/scriptPath/result/logs
fields (174KB -> ~25KB/run), and emits workflow:run_* SSE events. The LEFT list
ships lightweight summaries (getLightState replay + SSE); the RIGHT pane fetches
the full run (with agents[]) via GET /api/workflows/:runId on selection.

Backend: workflow-run-watcher.ts, types/workflow-run.ts, config/workflow-config.ts,
3 SSE events, getLightState workflowRuns replay, GET /api/workflows[/:runId],
showUltracodeAgents schema key + boot-gate (default OFF) + live toggleService.
Frontend: ultracode-panel.js (debounced master-detail render, run/phase select),
header launcher (btn-ultracode-agents--hidden marker -> mobile-guard-exempt),
App Settings toggle (SYNCED, deliberately not in displayKeys).

Agent states on disk are start|progress|done (start=queued; done has
durationMs/resultPreview). Tests: workflow-run-watcher (9), workflow-routes (3).
Verified: tsc/lint/prettier/frontend-syntax/public-assets/mobile-header-guard
clean; full test:ci green (2986 passed); live server + Playwright e2e against 25
real runs (28-agent grid, phase filter, OFF hides launcher).

Design: docs/ultracode-agent-viz-plan.md (rev. 3).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/web/public/app.js

@@ -221,6 +221,11 @@ const _SSE_HANDLER_MAP = [
   [SSE_EVENTS.SUBAGENT_TOOL_RESULT, '_onSubagentToolResult'],
   [SSE_EVENTS.SUBAGENT_COMPLETED, '_onSubagentCompleted'],
 
+  // Workflow runs (ultracode)
+  [SSE_EVENTS.WORKFLOW_RUN_DISCOVERED, '_onWorkflowRunDiscovered'],
+  [SSE_EVENTS.WORKFLOW_RUN_UPDATED, '_onWorkflowRunUpdated'],
+  [SSE_EVENTS.WORKFLOW_RUN_REMOVED, '_onWorkflowRunRemoved'],
+
   // Images
   [SSE_EVENTS.IMAGE_DETECTED, '_onImageDetected'],
   [SSE_EVENTS.ATTACHMENT_DETECTED, '_onAttachmentDetected'],
@@ -339,6 +344,12 @@ class CodemanApp {
     this.subagentToolResults = new Map(); // Map<agentId, Map<toolUseId, result>> - tool results by toolUseId
     this.activeSubagentId = null; // Currently selected subagent for detail view
     this.subagentPanelVisible = false;
+
+    // Ultracode / Workflow run visualization (master-detail tab)
+    this.workflowRuns = new Map(); // runId -> run summary (LEFT list)
+    this.workflowRunDetails = new Map(); // runId -> full run with agents[] (RIGHT pane)
+    this.activeWorkflowRunId = null;
+    this.activeWorkflowPhaseIndex = null;
     this.subagentWindows = new Map(); // Map<agentId, { element, position }>
     this.subagentWindowZIndex = ZINDEX_SUBAGENT_BASE;
     this.minimizedSubagents = new Map(); // Map<sessionId, Set<agentId>> - minimized to tab
@@ -2228,6 +2239,11 @@ class CodemanApp {
     // Clear subagent activity/results maps (prevents leaks if data.subagents is missing)
     this.subagentActivity.clear();
     this.subagentToolResults.clear();
+    // Clear ultracode workflow run state (re-seeded from data.workflowRuns below)
+    if (this.workflowRuns) this.workflowRuns.clear();
+    if (this.workflowRunDetails) this.workflowRunDetails.clear();
+    this.activeWorkflowRunId = null;
+    this.activeWorkflowPhaseIndex = null;
     // Clean up mobile/keyboard handlers and re-init (prevents listener accumulation on reconnect)
     MobileDetection.cleanup();
     KeyboardHandler.cleanup();
@@ -2402,6 +2418,11 @@ class CodemanApp {
       });
     }
 
+    // Seed ultracode workflow runs (LEFT-pane summaries) from the snapshot
+    if (data.workflowRuns) {
+      this.seedWorkflowRuns(data.workflowRuns);
+    }
+
     // Restore previously active session (survives page reload + SSE reconnect)
     // Must always re-select because handleInit clears terminal state above.
     // Reset activeSessionId so selectSession doesn't early-return.