feat: Implement Smart Router workflow with User Input and Duplicate Logic (v0.18.0)

Major update to the scanning engine to support "Pause & Resume" workflows.
The system can now halt execution to ask for user input (e.g. Weight) and resume
processing seamlessly.

Key Changes:
- Backend (Global Actions): Added `OPEN_FORM` action type to pause pipeline and request manual input.
- Backend (Routes): Updated `scan_lot` to handle `extra_data` payloads, allowing the pipeline to resume after user input.
- Backend (Logic): Implemented `confirm_duplicate` gatekeeper to handle "Warn vs Block" logic dynamically.
- Frontend (JS): Added `processSmartScan` to handle router signals (Open Modal, Warn Duplicate).
- Frontend (JS): Added `saveSmartScanData` to send original barcode + new form data back to the engine.
- UI: Fixed modal ID/Name conflicts (forcing use of `name` attribute for DB compatibility).
- UI: Restored missing "Cancel" button to Details Modal.
- Config: Added "User Input" rule type to the Rule Editor.

Ver: 0.18.0

global_actions.py

@@ -0,0 +1,125 @@
+from db import query_db, execute_db
+from datetime import datetime
+
+def execute_pipeline(actions, barcode, context):
+    """
+    Executes the chain of actions defined in the Rule.
+    Returns: {'success': bool, 'message': str, 'data': dict}
+    """
+    field_values = {}
+    should_save = False
+    
+    for action in actions:
+        atype = action.get('type')
+
+        # --- MAP (Extract) ---
+        if atype == 'map':
+            start = int(action.get('start', 1)) - 1
+            end = int(action.get('end', len(barcode)))
+            target = action.get('field')
+            if target:
+                safe_end = min(end, len(barcode))
+                if start < len(barcode):
+                    field_values[target] = barcode[start:safe_end]
+
+        # --- CLEAN (Format) ---
+        elif atype == 'clean':
+            target = action.get('field')
+            func = action.get('func')
+            if target in field_values:
+                val = str(field_values[target])
+                if func == 'TRIM': field_values[target] = val.strip()
+                elif func == 'REMOVE_SPACES': field_values[target] = val.replace(" ", "")
+                elif func == 'UPPERCASE': field_values[target] = val.upper()
+                elif func == 'REMOVE_LEADING_ZEROS': field_values[target] = val.lstrip('0')
+
+        # --- DUPLICATE CHECK (The Gatekeeper) ---
+        elif atype == 'duplicate':
+            target = action.get('field')
+            behavior = action.get('behavior', 'WARN') # Default to WARN
+            val = field_values.get(target)
+            
+            if val:
+                # 1. Check DB
+                same_sess = query_db(f"SELECT id FROM {context['table_name']} WHERE {target} = ? AND session_id = ? AND is_deleted=0", [val, context['session_id']], one=True)
+                other_sess = query_db(f"SELECT id FROM {context['table_name']} WHERE {target} = ? AND is_deleted=0", [val], one=True)
+
+                is_dup = False
+                dup_msg = ""
+                
+                if same_sess:
+                    is_dup = True
+                    dup_msg = f"Already scanned in THIS session ({val})"
+                    field_values['duplicate_status'] = 'dup_same_session'
+                    field_values['duplicate_info'] = 'Duplicate in same session'
+                elif other_sess:
+                    is_dup = True
+                    dup_msg = f"Previously scanned in another session ({val})"
+                    field_values['duplicate_status'] = 'dup_other_session'
+                    field_values['duplicate_info'] = 'Duplicate from history'
+                else:
+                    field_values['duplicate_status'] = 'normal'
+                    field_values['duplicate_info'] = None
+
+                # 2. Enforce Behavior
+                if is_dup:
+                    if behavior == 'BLOCK':
+                        # STRICT MODE: Stop immediately.
+                        return {
+                            'success': False, 
+                            'message': f"⛔ STRICT MODE: {dup_msg}. Entry denied.",
+                            'data': field_values
+                        }
+                    
+                    elif behavior == 'WARN':
+                        # WARN MODE: Ask user, unless they already clicked "Yes"
+                        if not context.get('confirm_duplicate'):
+                            return {
+                                'success': False, 
+                                'needs_confirmation': True,
+                                'message': f"⚠️ {dup_msg}", 
+                                'data': field_values
+                            }
+        # --- USER INPUT (The Gatekeeper) ---
+        elif atype == 'input':
+            # 1. Check if we received the manual data (Weight) from the Save button
+            incoming_data = context.get('extra_data')
+            
+            # 2. If data exists, MERGE it and CONTINUE (Don't stop!)
+            if incoming_data:
+                # Update our main data list with the user's input (e.g. weight=164)
+                field_values.update(incoming_data)
+                continue # <--- RESUME PIPELINE (Goes to next rule, usually SAVE)
+            
+            # 3. If no data, STOP and ask for it
+            return {
+                'success': False, 
+                'needs_input': True,
+                'message': 'Opening Details Form...',
+                'data': field_values
+            }
+        
+        # --- SAVE MARKER ---
+        elif atype == 'save':
+            should_save = True
+
+    # --- RESULT ---
+    if should_save:
+        try:
+            # Commit to DB
+            cols = ['session_id', 'scanned_by', 'scanned_at']
+            vals = [context['session_id'], context['user_id'], datetime.now()]
+            
+            for k, v in field_values.items():
+                cols.append(k)
+                vals.append(v)
+            
+            placeholders = ', '.join(['?'] * len(cols))
+            sql = f"INSERT INTO {context['table_name']} ({', '.join(cols)}) VALUES ({placeholders})"
+            execute_db(sql, vals)
+            
+            return {'success': True, 'message': 'Saved Successfully', 'data': field_values}
+        except Exception as e:
+            return {'success': False, 'message': f"Database Error: {str(e)}", 'data': field_values}
+    else:
+        return {'success': True, 'message': f"✅ Parsed: {field_values} (No Save Action)", 'data': field_values}