🔧 Flow Name Persistence - COMPLETE FIX

Date: October 12, 2025
Status: ✅ FIXED
Severity: HIGH (User Experience)

🎯 The Complete Problem

The flow name editing had TWO issues:

Issue 1: Signal Two-Way Binding ✅ FIXED

• Problem: Template used [(ngModel)] with a signal (doesn't work)
• Fix: Changed to one-way binding with manual signal update
• Status: ✅ Fixed earlier

Issue 2: No Persistence After Refresh ❌ THIS WAS THE REAL ISSUE

• Problem: Flow saves correctly, but on refresh shows "Untitled Flow"
• Root Cause: currentFlowId and currentFlowName were NOT persisted
• Fix: Converted to use autoFlashState for automatic persistence
• Status: ✅ FIXED NOW!

🔍 What Was Really Happening

Before Fix

// Regular signals - NOT persisted
readonly currentFlowId = signal<string | null>(null);
readonly currentFlowName = signal<string>('Untitled Flow');

User Experience:

1. User edits name to "paks Flow" ✅
2. User saves flow → Flow saved to storage with correct name ✅
3. User refreshes page → currentFlowId = null, currentFlowName = "Untitled Flow" ❌
4. Canvas is blank, showing "Untitled Flow" ❌
5. But saved flow "paks Flow" exists in history (can click to load it) ✅

The flow WAS saving correctly, but on refresh, the app started with a blank canvas instead of loading the last flow!

✅ The Complete Fix

1. Convert to Flash Persistence

// ✅ AFTER: Auto-persisted with Flash Persistence
readonly currentFlowId = autoFlashState<string | null>('singularity:currentFlowId', null);
readonly currentFlowName = autoFlashState<string>('singularity:currentFlowName', 'Untitled Flow');

2. Auto-Load Last Flow on Init

async ngOnInit(): Promise<void> {
  // ... initialization ...
  
  // Load available flows
  await this.loadAvailableFlows();
  
  // ✅ AUTO-LOAD: Restore last opened flow
  const lastFlowId = this.currentFlowId();
  if (lastFlowId) {
    console.log(`🔄 Auto-loading last flow: ${lastFlowId}`);
    await this.loadFlow(lastFlowId).catch(err => {
      console.error('Failed to auto-load last flow:', err);
      // If loading fails, start with blank canvas
      this.createNewFlow();
    });
  } else {
    console.log('📝 Starting with new flow');
  }
  
  // ... rest of initialization ...
}

3. Import autoFlashState

import { GgStorage, autoFlashState } from '@storage-system';

🎉 What Works Now

User Experience (After Fix)

1. Edit Flow Name: Click "Untitled Flow", type "My Amazing Flow" ✅
2. Save Flow: Click Save button → Flow saved with new name ✅
3. Refresh Page: Automatically loads "My Amazing Flow" ✅
4. Name Persists: Shows "My Amazing Flow" in header ✅
5. Blocks Persist: Canvas shows all blocks ✅
6. Connections Persist: All connections restored ✅

🧪 How to Test

Test 1: Name Editing

1. Open Logic Builder
2. Click on flow name
3. Type "My Test Flow"
4. Press Enter
5. ✅ Name updates immediately

Test 2: Save and Persistence

1. Continue from Test 1
2. Add some blocks to canvas
3. Click Save button
4. See "✅ Flow saved: My Test Flow"
5. ✅ Flow saved with correct name

Test 3: Refresh Persistence (THE BIG FIX!)

1. Continue from Test 2
2. Refresh the page (F5 or Cmd+R)
3. ✅ Canvas loads automatically
4. ✅ Shows "My Test Flow" in header
5. ✅ All blocks are restored
6. ✅ All connections are restored

Test 4: Multiple Flows

1. Create and save "Flow 1"
2. Click "New Flow" button
3. Create and save "Flow 2"
4. Refresh page
5. ✅ Loads "Flow 2" (last active)
6. Click history, select "Flow 1"
7. ✅ Loads "Flow 1" with correct name

📊 Impact

📁 Files Changed

1. logic-builder.component.ts

   • Changed currentFlowId and currentFlowName to use autoFlashState
   • Made ngOnInit async
   • Added auto-load logic for last opened flow
   • Added autoFlashState import

2. logic-builder.component.html

   • Fixed signal two-way binding (earlier fix)

🎓 Key Learnings

1. Flash Persistence for UI State

When user state should persist across sessions:

// ✅ DO: Use autoFlashState
readonly myState = autoFlashState('key', defaultValue);

// ❌ DON'T: Use regular signals for persistent state
readonly myState = signal(defaultValue);

2. Auto-Load Last Context

For better UX, restore user's last context:

async ngOnInit() {
  const lastId = this.currentId();
  if (lastId) {
    await this.loadItem(lastId);  // ✅ Restore context
  }
}

3. Two-Way Binding with Signals

Always use manual update pattern:

<input 
  [ngModel]="mySignal()" 
  (ngModelChange)="mySignal.set($event)" 
/>

🔗 Related Fixes

This completes the trilogy of fixes today:

1. ✅ Storage System Mismatch - Flow Composer now loads flows
2. ✅ Signal Two-Way Binding - Flow name editing works
3. ✅ Flow Persistence - Flow name and canvas persist after refresh

Status: ✅ COMPLETELY FIXED

Flow name editing now works perfectly with full persistence across page refreshes! 🎉