hi claude. Can you take a look at my /home/mdares/.nodered/projects/flows.json and get the full context/understanding from it? It should be just added to the project


I'll read your Node-RED flows.json file to understand its contents.


<tool_use_error>File does not exist.</tool_use_error>


The file doesn't exist at that path. Let me check if there's a different location or structure:


Bash

find /home/mdares/.nodered -name "flows.json" 2>/dev/null | head -20

Find flows.json files in .nodered directory


ls -la /home/mdares/.nodered/projects/ 2>/dev/null

List contents of projects directory


Exit code 2


It looks like the `/home/mdares/.nodered/projects/` directory doesn't exist. Let me check the .nodered directory structure:


ls -la /home/mdares/.nodered/ 2>/dev/null

List .nodered directory contents


The `.nodered` directory doesn't exist either. Could you verify the correct path to your flows.json file? You mentioned it "should be just added to the project" - did you mean it's in your current working directory (`/home/mdares/Desktop`)? Let me check there:


ls -la /home/mdares/Desktop/ | grep -i flow

Check Desktop for flows.json


Could you provide the correct path to your flows.json file, or let me know where it's located?


the path is: /home/mdares/.node-red/projects/Plastico/flows.json


I'll read the flows.json file from the correct path.


Let me verify the path exists:


List Plastico project directory contents


Error: Exit code 2
ls: cannot access '/home/mdares/.node-red/projects/Plastico/': No such file or directory


The directory doesn't exist. Let me search for any flows.json files in your home directory:


find /home/mdares -name "flows.json" 2>/dev/null | head -20

Find all flows.json files


/home/mdares/projects/Plastico/flows.json
/home/mdares/.node-red/flows.json


Found it! There are two flows.json files. Which one would you like me to read?
1. `/home/mdares/projects/Plastico/flows.json`
2. `/home/mdares/.node-red/flows.json`

I'll read the one in your projects directory since you mentioned "Plastico":


Error: File content (74927 tokens) exceeds maximum allowed tokens (25000). Please use offset and limit parameters to read specific portions of the file, or use the GrepTool to search for specific content.


The file is quite large (74,927 tokens). Let me get a high-level overview first:


Count lines in flows.json


cat /home/mdares/projects/Plastico/flows.json | jq 'length' 2>/dev/null || echo "Not valid JSON or jq not available"

Count number of flow objects


cat /home/mdares/projects/Plastico/flows.json | jq '[.[] | select(.type == "tab")] | length' 2>/dev/null

Count number of tabs/flows


1806 /home/mdares/projects/Plastico/flows.json


Let me get a better understanding of the structure by looking at the node types and flows:


cat /home/mdares/projects/Plastico/flows.json | jq '[.[] | select(.type == "tab")] | .[].label' 2>/dev/null

Get tab/flow names


cat /home/mdares/projects/Plastico/flows.json | jq '[.[] | .type] | group_by(.) | map({type: .[0], count: length}) | sort_by(-.count)' 2>/dev/null

Get node type distribution


"Flow 1"


Now let me get more details about the UI structure and database connections:


cat /home/mdares/projects/Plastico/flows.json | jq '[.[] | select(.type == "ui_tab")] | .[].name' 2>/dev/null

Get UI tab names


cat /home/mdares/projects/Plastico/flows.json | jq '[.[] | select(.type == "ui_group")] | .[] | {name: .name, tab: .tab}' 2>/dev/null

Get UI groups and their tabs


cat /home/mdares/projects/Plastico/flows.json | jq '[.[] | select(.type == "MySQLdatabase")] | .[0]' 2>/dev/null

Get MySQL database configuration


"Home"
"Work Orders"
"Alerts"
"Graphs"
"Help"
"Settings"


{
  "name": "Default",
  "tab": "c567195d86466cd5"
}
{
  "name": "Work Orders Group",
  "tab": "d1a1e2f3a4b5c6d7"
}
{
  "name": "Alerts Group",
  "tab": "a1b2c3d4e5f60718"
}
{
  "name": "Graphs Group",
  "tab": "b2c3d4e5f6a70182"
}
{
  "name": "Help Group",
  "tab": "c3d4e5f6a7b80192"
}
{
  "name": "Settings Group",
  "tab": "d4e5f6a7b8c90123"
}


Let me also check what the function nodes are doing and get some template details:


cat /home/mdares/projects/Plastico/flows.json | jq '[.[] | select(.type == "function")] | .[].name' 2>/dev/null

Get function node names


cat /home/mdares/projects/Plastico/flows.json | jq '[.[] | select(.type == "ui_template")] | .[] | {name: .name, group: .group}' 2>/dev/null

Get UI template names


"Tab navigation"
"1,0"
"Cavities Settings"
"Mold Presets Handler"
"Process DB Results"
"Work Order buttons"
"Build Insert SQL"
"Back to UI"
"Base64"
"Refresh Trigger"
"Machine cycles"
"Calculate KPIs"
"Process Alert for DB"
"Record KPI History"
"Send to template"
"Initialize Global Variables"
"Fetch Graph Data"
"Format Graph Data"


{
  "name": "Home Template",
  "group": "919b5b8d778e2b6c"
}
{
  "name": "Alerts Template",
  "group": "e2f3a4b5c6d7e8f9"
}
{
  "name": "Graphs Template",
  "group": "e3f4a5b6c7d8e9f0"
}
{
  "name": "Help Template",
  "group": "e4f5a6b7c8d9e0f1"
}
{
  "name": "Settings Template",
  "group": "e5f6a7b8c9d0e1f2"
}
{
  "name": "WO Template",
  "group": "e1f2a3b4c5d6e7f8"
}
{
  "name": "General Style",
  "group": ""
}


Perfect! I now have a good understanding of your Node-RED flows.json file. Here's the comprehensive context:

## Overview

Your Node-RED project is a **manufacturing/production monitoring dashboard** for what appears to be a plastic injection molding operation called "Plastico".

### Architecture

**Single Flow Structure:**
- 1 main flow ("Flow 1") with 93 total nodes
- 1,806 lines of JSON configuration

**Database Backend:**
- MySQL database connection (`machine_data`)
- Host: 10.147.20.244:3306
- Used for storing and retrieving production data

### UI Dashboard Structure

The application has **6 main tabs**:
1. **Home** - Main dashboard view
2. **Work Orders** - Work order management
3. **Alerts** - Alert monitoring and display
4. **Graphs** - Data visualization
5. **Help** - User assistance
6. **Settings** - Configuration interface

Each tab has a corresponding group and template for organizing the UI.

### Key Functionality

**Node Distribution:**
- 18 function nodes for business logic
- 11 debug nodes for development/troubleshooting
- 10 link-out / 9 link-in nodes for flow organization
- 7 UI templates for custom dashboards
- 4 MySQL query nodes for database operations
- 4 inject nodes for triggering flows

**Core Functions:**
- Tab navigation
- Cavities settings management
- Mold presets handling
- Work order creation/management
- KPI calculation and tracking
- Machine cycle monitoring
- Alert processing and recording
- Graph data fetching and formatting
- Global variable initialization
- Excel integration (sheet-to-json conversion)

This appears to be a production monitoring system that tracks machine cycles, calculates KPIs, manages work orders, displays alerts, and provides visualization through graphs - all for a plastic injection molding manufacturing environment.


perfect. within this folder there is a file that is called Recommendation.txt In it are clear instructions on how to implement a multi-step plan to fix various issues that we had. We finished phase 1 and were going to phase 2 before we were cut off. With the context that you have an your access to the flows.json file, can you please continue with the multistep phase plan, being careful with the implementation and following the recommendations.


I'll read the Recommendation.txt file to understand the multi-step plan and see what was completed in Phase 1, then continue with Phase 2.


No files found


find /home/mdares/projects/Plastico -name "Recommendation.txt" -o -name "recommendation.txt" 2>/dev/null

Find Recommendation.txt file


     1→Phase 1: Database Schema Verification & Updates
     2→
     3→ Goal: Ensure work_orders table has all required columns
     4→
     5→ Step 1.1: Verify Database Schema
     6→
     7→ - Read current work_orders table structure from migration files
     8→ - Check if good_parts column exists (confirmed needed but may be missing)
     9→ - Verify cycle_count column exists (added in migration.sql)
    10→ - Check if progress_percent column exists
    11→
    12→ Step 1.2: Create Migration SQL (if needed)
    13→
    14→ - Add missing columns: good_parts INT DEFAULT 0
    15→ - Ensure indexes exist on work_order_id and status
    16→ - Create backup of work_orders table before schema changes
    17→
    18→ Files Modified:
    19→ - New file: migration_work_order_persistence.sql
    20→
    21→ Dependencies: None
    22→ Risk Level: LOW (schema changes with defaults won't break existing data)
    23→
    24→ ---
    25→ Phase 2: Add Cycle Persistence to work_orders Table
    26→
    27→ Goal: Write good_parts and cycle_count to database every 5 seconds (throttled)
    28→
    29→ Step 2.1: Add Fourth Output to Machine Cycles Function
    30→
    31→ - Modify modified_machine_cycles.js
    32→ - Add calculation for good_parts = (cycles × cavities) - scrap
    33→ - Create throttled DB update message (same 5s logic as session_state)
    34→ - Output on port 4: SQL UPDATE for work_orders table
    35→
    36→ Code Location: /home/mdares/.node-red/projects/Plastico/modified_machine_cycles.js lines 98-100
    37→
    38→ SQL Pattern:
    39→ UPDATE work_orders
    40→ SET cycle_count = ?,
    41→     good_parts = ?,
    42→     progress_percent = ?,
    43→     updated_at = NOW()
    44→ WHERE work_order_id = ?
    45→
    46→ Step 2.2: Wire Fourth Output to Database Node
    47→
    48→ - In flows.json, find "Machine cycles" function node
    49→ - Add wire from output[3] (4th port) to mariaDB node
    50→ - Ensure proper error handling
    51→
    52→ Files Modified:
    53→ - modified_machine_cycles.js
    54→ - flows.json (node wiring)
    55→
    56→ Dependencies: Phase 1 complete
    57→ Risk Level: LOW (only adds writes, doesn't change existing logic)
    58→
    59→My feedback: Machine cycles already has a 4th output that is connected to DB Guard, this is used for persistence of cycles and so that graphs doesn't autorefresh with each cycles. Please verify how this would affect this
    60→
    61→ ---
    62→ Phase 3: Implement Resume/Restart Prompt on Load
    63→
    64→ Goal: Prevent accidental progress loss when clicking Load
    65→
    66→ Step 3.1: Add Progress Check Before Load
    67→
    68→ - Modify modified_work_order_buttons.js case "start-work-order"
    69→ - Query work_orders table for existing cycle_count and good_parts
    70→ - If progress exists (cycle_count > 0 OR good_parts > 0), send prompt to UI
    71→ - Store work order data in temporary variable pending user choice
    72→
    73→ Code Location: modified_work_order_buttons.js lines 13-47
    74→
    75→ Step 3.2: Add Resume/Restart Action Handlers
    76→
    77→ - Create new action: resume-work-order
    78→   - Keep existing cycle_count and good_parts
    79→   - Create new session_id
    80→   - Set status to RUNNING
    81→   - Load current values into global state
    82→ - Create new action: restart-work-order
    83→   - Reset cycle_count and good_parts to 0 in database
    84→   - Create new session_id
    85→   - Set status to RUNNING
    86→   - Initialize global state to 0
    87→
    88→ Step 3.3: Add UI Prompt Component
    89→
    90→ - In Home template or Work Orders template, add hidden dialog
    91→ - Show when msg.topic === "resumePrompt"
    92→ - Display current progress: "WO-123 has 150/500 parts. Resume or Restart?"
    93→ - Two buttons: "Resume" (green) and "Restart" (orange with confirmation)
    94→
    95→ Files Modified:
    96→ - modified_work_order_buttons.js
    97→ - flows.json (Home or Work Orders template for dialog)
    98→
    99→ Dependencies: Phase 2 complete (ensures good_parts exists)
   100→ Risk Level: MEDIUM (changes core Load button behavior, needs thorough testing)
   101→
   102→ ---
   103→ Phase 4: Fix Complete Button to Persist Final Counts
   104→
   105→ Goal: Ensure final production numbers are written to work_orders before marking DONE
   106→
   107→ Step 4.1: Modify Complete Work Order Logic
   108→
   109→ - Before setting status to DONE, write current session state to work_orders
   110→ - Update SQL to:
   111→ UPDATE work_orders
   112→ SET status = 'DONE',
   113→     cycle_count = ?,
   114→     good_parts = ?,
   115→     progress_percent = 100,
   116→     updated_at = NOW()
   117→ WHERE work_order_id = ?
   118→
   119→ Code Location: modified_work_order_buttons.js lines 49-82
   120→
   121→ Files Modified:
   122→ - modified_work_order_buttons.js
   123→
   124→ Dependencies: Phase 2 complete
   125→ Risk Level: LOW (just ensures final sync before completion)
   126→
   127→ ---
   128→ Phase 5: Update Session Restore to Set RUNNING Status
   129→
   130→ Goal: When restoring session, automatically set work order back to RUNNING
   131→
   132→ Step 5.1: Modify Restore Session Logic
   133→
   134→ - In restore_session.js, after loading global state
   135→ - Add database update to set status back to RUNNING
   136→ - Only if work order exists and was previously RUNNING
   137→
   138→ SQL:
   139→ UPDATE work_orders
   140→ SET status = 'RUNNING',
   141→     updated_at = NOW()
   142→ WHERE work_order_id = ? AND status != 'DONE'
   143→
   144→ Code Location: restore_session.js (after global.set calls)
   145→
   146→ Files Modified:
   147→ - restore_session.js
   148→
   149→ Dependencies: None (independent improvement)
   150→ Risk Level: LOW (restores expected state)
   151→
   152→My Feedback: Make sure user still has to click start for it to start counting, should be running so doesn't have to load again, but user must confirm with start button
   153→
   154→ ---
   155→ Phase 6: Load Work Order Data from Database (Not Session)
   156→
   157→ Goal: Make work_orders table the source of truth for UI display
   158→
   159→ Step 6.1: Modify Work Order Load/Start to Query Database First
   160→
   161→ - When loading work order, query database for current cycle_count and good_parts
   162→ - Use these values to initialize global state (not assume zeros)
   163→ - For resume: global.set("cycleCount", dbRow.cycle_count)
   164→ - For restart: global.set("cycleCount", 0) + UPDATE database
   165→
   166→ Step 6.2: Update Home Template to Show DB Values
   167→
   168→ - When displaying active work order, prioritize msg.payload.good from database
   169→ - Ensure work_orders refresh query includes cycle_count and good_parts
   170→ - Update "Back to UI" function to send accurate database values
   171→
   172→ Code Locations:
   173→ - modified_work_order_buttons.js (load logic)
   174→ - flows.json (Home template $watch for workOrderCycle updates)
   175→
   176→ Files Modified:
   177→ - modified_work_order_buttons.js
   178→ - Potentially flows.json (Home template if needed)
   179→
   180→ Dependencies: Phase 2-4 complete
   181→ Risk Level: MEDIUM (changes data flow, requires testing of UI updates)
   182→
   183→My feedback: Be extra careful with this step, you are modifying existing logic. Make sure to check for potential side-effects, what can go wrong, what your modifications will do to existing nodes/wiring/logic
   184→
   185→ ---
   186→ Phase 7: Add Tab Switch State Refresh (Optional Enhancement)
   187→
   188→ Goal: Ensure UI shows latest data when returning to Home tab
   189→
   190→ Step 7.1: Add Tab Change Listener
   191→
   192→ - In Home template, listen for tab activation event
   193→ - On activation, query work_orders for active RUNNING order
   194→ - Update UI with fresh data from database
   195→
   196→ Code Location: flows.json Home template script section
   197→
   198→ Files Modified:
   199→ - flows.json (Home template)
   200→
   201→ Dependencies: Phase 6 complete
   202→ Risk Level: LOW (purely UI enhancement)
   203→
   204→ ---
   205→ Phase 8: Testing & Validation
   206→
   207→ Goal: Verify all scenarios work correctly
   208→
   209→ Test Cases:
   210→
   211→ 1. New Work Order Start:
   212→   - Load WO with 0 progress → should start normally (no prompt)
   213→ 2. Resume Existing Work Order:
   214→   - Load WO with 50/200 parts → prompt shows
   215→   - Click Resume → continues from 50
   216→   - Machine cycles → good_parts increments correctly
   217→ 3. Restart Existing Work Order:
   218→   - Load WO with 100/500 parts → prompt shows
   219→   - Click Restart → confirmation dialog
   220→   - After restart → cycle_count and good_parts reset to 0 in DB
   221→ 4. Tab Switch:
   222→   - Start production, switch to Graphs, switch back to Home
   223→   - Progress should still show correctly
   224→ 5. Node-RED Restart (with restore):
   225→   - Production running at 75/300 parts
   226→   - Restart Node-RED
   227→   - Click "Restore Session"
   228→   - Work order status → RUNNING
   229→   - Progress shows 75 parts
   230→   - Click Start → production continues
   231→ 6. Complete Work Order:
   232→   - Finish work order at 250/250 parts
   233→   - Click Done
   234→   - Database shows cycle_count and good_parts persisted
   235→   - Status = DONE
   236→ 7. Power Failure Simulation:
   237→   - Production at 150 parts
   238→   - Kill Node-RED process
   239→   - Restart
   240→   - Maximum 5 seconds of data loss (1-2 cycles depending on cycle time)
   241→
   242→ ---
   243→ Implementation Order Summary
   244→
   245→ 1. Phase 1 → Database schema (foundation)
   246→ 2. Phase 2 → Cycle persistence (core fix)
   247→ 3. Phase 4 → Complete button fix (complements Phase 2)
   248→ 4. Phase 5 → Session restore status (independent)
   249→ 5. Phase 3 → Resume/Restart prompt (depends on Phase 2 data)
   250→ 6. Phase 6 → Database as source of truth (depends on all above)
   251→ 7. Phase 7 → Tab switch refresh (optional polish)
   252→ 8. Phase 8 → Full testing
   253→
   254→ ---
   255→ Rollback Plan
   256→
   257→ If issues arise:
   258→ - Phase 1-2: Safe to rollback (schema defaults to 0, won't break)
   259→ - Phase 3-4: Can disable prompt by commenting out check, falls back to old behavior
   260→ - Phase 5-6: Revert files from git
   261→ - Database: Keep backups before each phase
   262→
   263→ ---
   264→ Key Files to Modify
   265→
   266→ | File                                 | Phases  | Risk   |
   267→ |--------------------------------------|---------|--------|
   268→ | migration_work_order_persistence.sql | 1       | LOW    |
   269→ | modified_machine_cycles.js           | 2       | LOW    |
   270→ | modified_work_order_buttons.js       | 2,3,4,6 | MEDIUM |
   271→ | restore_session.js                   | 5       | LOW    |
   272→ | flows.json                           | 2,3,7   | MEDIUM |
   273→
   274→ ---
   275→ Success Criteria
   276→
   277→ ✅ Work orders persist progress across Node-RED restarts
   278→ ✅ Resume/Restart prompt prevents accidental data loss
   279→ ✅ work_orders table always reflects current production state
   280→ ✅ Tab switches don't lose data
   281→ ✅ Multi-day work orders can be interrupted and resumed
   282→ ✅ Maximum 5 seconds of data loss on crash (acceptable for throttled writes)
   283→
   284→
   285→
   286→ Ready to proceed to Phase 2 when you give the go-ahead! Phase 2 will modify the machine cycles function to persist good_parts and cycle_count to the
   287→  work_orders table (using the existing 4th output that goes to DB Guard).
   288→
   289→> Go with phase 2
   290→  ⎿  ⧉ Selected 97 lines from projects/Plastico/migration_work_order_persistence.sql in Visual Studio Code
   291→
   292→● Perfect! Let me start Phase 2. First, I need to understand the current 4th output setup and how DB Guard works.
   293→
   294→● Search(pattern: ""name":\s*"DB Guard"", path: "projects/Plastico", glob: "flows.json", output_mode: "content")
   295→  ⎿  Found 0 lines
   296→
   297→● Search(pattern: "DB Guard|DBGuard|db-guard|db_guard", path: "projects/Plastico", glob: "flows.json", output_mode: "content")
   298→  ⎿  Found 6 lines (ctrl+o to expand)
   299→
   300→● Great! Now let me find the Machine Cycles function node and see how it's wired:
   301→
   302→● Search(pattern: ""name":\s*"Machine [Cc]ycles"", path: "projects/Plastico", glob: "flows.json", output_mode: "content")
   303→  ⎿  Found 41 lines (ctrl+o to expand)
   304→
   305→● Perfect! I can see the Machine Cycles function has 4 outputs:
   306→  - Output 1 (port 0): Scrap prompt
   307→  - Output 2 (port 1): Production state
   308→  - Output 3 (port 2): DB sync for session_state
   309→  - Output 4 (port 3): Goes to DB Guard (Cycles) - this is what we need to modify!
   310→
   311→  Now let me check what DB Guard (Cycles) does and what the 4th output currently sends:
   312→
   313→● Read(projects/Plastico/flows.json)
   314→  ⎿  Read 50 lines
   315→
   316→● Good! I can see output 4 currently just goes to a debug node. Now let me look at what the current modified_machine_cycles.js sends on output 4 (the
   317→  session-sync message):
   318→
   319→  Looking at modified_machine_cycles.js lines 98-100, it currently sends the session-sync message. Now I need to:
   320→
   321→  1. Add a 5th output for work_order persistence (to keep session-sync separate)
   322→  2. OR Modify the existing 4th output to send work_order updates instead of/in addition to session updates
   323→
   324→  Based on your feedback that "Machine cycles already has a 4th output connected to DB Guard for persistence of cycles", I'll create a 5th output for
   325→  work_order updates to keep the existing session persistence logic intact.
   326→
   327→  Let me modify the machine cycles function:
   328→
   329→● Update(projects/Plastico/modified_machine_cycles.js)
   330→
   331→● Update(projects/Plastico/modified_machine_cycles.js)
   332→
   333→● Update(projects/Plastico/modified_machine_cycles.js)

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

Phase 1: Database Schema Verification & Updates

 Goal: Ensure work_orders table has all required columns

 Step 1.1: Verify Database Schema

 - Read current work_orders table structure from migration files
 - Check if good_parts column exists (confirmed needed but may be missing)
 - Verify cycle_count column exists (added in migration.sql)
 - Check if progress_percent column exists

 Step 1.2: Create Migration SQL (if needed)

 - Add missing columns: good_parts INT DEFAULT 0
 - Ensure indexes exist on work_order_id and status
 - Create backup of work_orders table before schema changes

 Files Modified:
 - New file: migration_work_order_persistence.sql

 Dependencies: None
 Risk Level: LOW (schema changes with defaults won't break existing data)

 ---
 Phase 2: Add Cycle Persistence to work_orders Table

 Goal: Write good_parts and cycle_count to database every 5 seconds (throttled)

 Step 2.1: Add Fourth Output to Machine Cycles Function

 - Modify modified_machine_cycles.js
 - Add calculation for good_parts = (cycles × cavities) - scrap
 - Create throttled DB update message (same 5s logic as session_state)
 - Output on port 4: SQL UPDATE for work_orders table

 Code Location: /home/mdares/.node-red/projects/Plastico/modified_machine_cycles.js lines 98-100

 SQL Pattern:
 UPDATE work_orders
 SET cycle_count = ?,
     good_parts = ?,
     progress_percent = ?,
     updated_at = NOW()
 WHERE work_order_id = ?

 Step 2.2: Wire Fourth Output to Database Node

 - In flows.json, find "Machine cycles" function node
 - Add wire from output[3] (4th port) to mariaDB node
 - Ensure proper error handling

 Files Modified:
 - modified_machine_cycles.js
 - flows.json (node wiring)

 Dependencies: Phase 1 complete
 Risk Level: LOW (only adds writes, doesn't change existing logic)

My feedback: Machine cycles already has a 4th output that is connected to DB Guard, this is used for persistence of cycles and so that graphs doesn't autorefresh with each cycles. Please verify how this would affect this

 ---
 Phase 3: Implement Resume/Restart Prompt on Load

 Goal: Prevent accidental progress loss when clicking Load

 Step 3.1: Add Progress Check Before Load

 - Modify modified_work_order_buttons.js case "start-work-order"
 - Query work_orders table for existing cycle_count and good_parts
 - If progress exists (cycle_count > 0 OR good_parts > 0), send prompt to UI
 - Store work order data in temporary variable pending user choice

 Code Location: modified_work_order_buttons.js lines 13-47

 Step 3.2: Add Resume/Restart Action Handlers

 - Create new action: resume-work-order
   - Keep existing cycle_count and good_parts
   - Create new session_id
   - Set status to RUNNING
   - Load current values into global state
 - Create new action: restart-work-order
   - Reset cycle_count and good_parts to 0 in database
   - Create new session_id
   - Set status to RUNNING
   - Initialize global state to 0

 Step 3.3: Add UI Prompt Component

 - In Home template or Work Orders template, add hidden dialog
 - Show when msg.topic === "resumePrompt"
 - Display current progress: "WO-123 has 150/500 parts. Resume or Restart?"
 - Two buttons: "Resume" (green) and "Restart" (orange with confirmation)

 Files Modified:
 - modified_work_order_buttons.js
 - flows.json (Home or Work Orders template for dialog)

 Dependencies: Phase 2 complete (ensures good_parts exists)
 Risk Level: MEDIUM (changes core Load button behavior, needs thorough testing)

 ---
 Phase 4: Fix Complete Button to Persist Final Counts

 Goal: Ensure final production numbers are written to work_orders before marking DONE

 Step 4.1: Modify Complete Work Order Logic

 - Before setting status to DONE, write current session state to work_orders
 - Update SQL to:
 UPDATE work_orders
 SET status = 'DONE',
     cycle_count = ?,
     good_parts = ?,
     progress_percent = 100,
     updated_at = NOW()
 WHERE work_order_id = ?

 Code Location: modified_work_order_buttons.js lines 49-82

 Files Modified:
 - modified_work_order_buttons.js

 Dependencies: Phase 2 complete
 Risk Level: LOW (just ensures final sync before completion)

 ---
 Phase 5: Update Session Restore to Set RUNNING Status

 Goal: When restoring session, automatically set work order back to RUNNING

 Step 5.1: Modify Restore Session Logic

 - In restore_session.js, after loading global state
 - Add database update to set status back to RUNNING
 - Only if work order exists and was previously RUNNING

 SQL:
 UPDATE work_orders
 SET status = 'RUNNING',
     updated_at = NOW()
 WHERE work_order_id = ? AND status != 'DONE'

 Code Location: restore_session.js (after global.set calls)

 Files Modified:
 - restore_session.js

 Dependencies: None (independent improvement)
 Risk Level: LOW (restores expected state)

My Feedback: Make sure user still has to click start for it to start counting, should be running so doesn't have to load again, but user must confirm with start button

 ---
 Phase 6: Load Work Order Data from Database (Not Session)

 Goal: Make work_orders table the source of truth for UI display

 Step 6.1: Modify Work Order Load/Start to Query Database First

 - When loading work order, query database for current cycle_count and good_parts
 - Use these values to initialize global state (not assume zeros)
 - For resume: global.set("cycleCount", dbRow.cycle_count)
 - For restart: global.set("cycleCount", 0) + UPDATE database

 Step 6.2: Update Home Template to Show DB Values

 - When displaying active work order, prioritize msg.payload.good from database
 - Ensure work_orders refresh query includes cycle_count and good_parts
 - Update "Back to UI" function to send accurate database values

 Code Locations:
 - modified_work_order_buttons.js (load logic)
 - flows.json (Home template $watch for workOrderCycle updates)

 Files Modified:
 - modified_work_order_buttons.js
 - Potentially flows.json (Home template if needed)

 Dependencies: Phase 2-4 complete
 Risk Level: MEDIUM (changes data flow, requires testing of UI updates)

My feedback: Be extra careful with this step, you are modifying existing logic. Make sure to check for potential side-effects, what can go wrong, what your modifications will do to existing nodes/wiring/logic

 ---
 Phase 7: Add Tab Switch State Refresh (Optional Enhancement)

 Goal: Ensure UI shows latest data when returning to Home tab

 Step 7.1: Add Tab Change Listener

 - In Home template, listen for tab activation event
 - On activation, query work_orders for active RUNNING order
 - Update UI with fresh data from database

 Code Location: flows.json Home template script section

 Files Modified:
 - flows.json (Home template)

 Dependencies: Phase 6 complete
 Risk Level: LOW (purely UI enhancement)

 ---
 Phase 8: Testing & Validation

 Goal: Verify all scenarios work correctly

 Test Cases:

 1. New Work Order Start:
   - Load WO with 0 progress → should start normally (no prompt)
 2. Resume Existing Work Order:
   - Load WO with 50/200 parts → prompt shows
   - Click Resume → continues from 50
   - Machine cycles → good_parts increments correctly
 3. Restart Existing Work Order:
   - Load WO with 100/500 parts → prompt shows
   - Click Restart → confirmation dialog
   - After restart → cycle_count and good_parts reset to 0 in DB
 4. Tab Switch:
   - Start production, switch to Graphs, switch back to Home
   - Progress should still show correctly
 5. Node-RED Restart (with restore):
   - Production running at 75/300 parts
   - Restart Node-RED
   - Click "Restore Session"
   - Work order status → RUNNING
   - Progress shows 75 parts
   - Click Start → production continues
 6. Complete Work Order:
   - Finish work order at 250/250 parts
   - Click Done
   - Database shows cycle_count and good_parts persisted
   - Status = DONE
 7. Power Failure Simulation:
   - Production at 150 parts
   - Kill Node-RED process
   - Restart
   - Maximum 5 seconds of data loss (1-2 cycles depending on cycle time)

 ---
 Implementation Order Summary

 1. Phase 1 → Database schema (foundation)
 2. Phase 2 → Cycle persistence (core fix)
 3. Phase 4 → Complete button fix (complements Phase 2)
 4. Phase 5 → Session restore status (independent)
 5. Phase 3 → Resume/Restart prompt (depends on Phase 2 data)
 6. Phase 6 → Database as source of truth (depends on all above)
 7. Phase 7 → Tab switch refresh (optional polish)
 8. Phase 8 → Full testing

 ---
 Rollback Plan

 If issues arise:
 - Phase 1-2: Safe to rollback (schema defaults to 0, won't break)
 - Phase 3-4: Can disable prompt by commenting out check, falls back to old behavior
 - Phase 5-6: Revert files from git
 - Database: Keep backups before each phase

 ---
 Key Files to Modify

 | File                                 | Phases  | Risk   |
 |--------------------------------------|---------|--------|
 | migration_work_order_persistence.sql | 1       | LOW    |
 | modified_machine_cycles.js           | 2       | LOW    |
 | modified_work_order_buttons.js       | 2,3,4,6 | MEDIUM |
 | restore_session.js                   | 5       | LOW    |
 | flows.json                           | 2,3,7   | MEDIUM |

 ---
 Success Criteria

 ✅ Work orders persist progress across Node-RED restarts
 ✅ Resume/Restart prompt prevents accidental data loss
 ✅ work_orders table always reflects current production state
 ✅ Tab switches don't lose data
 ✅ Multi-day work orders can be interrupted and resumed
 ✅ Maximum 5 seconds of data loss on crash (acceptable for throttled writes)

 Ready to proceed to Phase 2 when you give the go-ahead! Phase 2 will modify the machine cycles function to persist good_parts and cycle_count to the
  work_orders table (using the existing 4th output that goes to DB Guard).

> Go with phase 2
  ⎿  ⧉ Selected 97 lines from projects/Plastico/migration_work_order_persistence.sql in Visual Studio Code

● Perfect! Let me start Phase 2. First, I need to understand the current 4th output setup and how DB Guard works.

● Search(pattern: ""name":\s*"DB Guard"", path: "projects/Plastico", glob: "flows.json", output_mode: "content")
  ⎿  Found 0 lines

● Search(pattern: "DB Guard|DBGuard|db-guard|db_guard", path: "projects/Plastico", glob: "flows.json", output_mode: "content")
  ⎿  Found 6 lines (ctrl+o to expand)

● Great! Now let me find the Machine Cycles function node and see how it's wired:

● Search(pattern: ""name":\s*"Machine [Cc]ycles"", path: "projects/Plastico", glob: "flows.json", output_mode: "content")
  ⎿  Found 41 lines (ctrl+o to expand)

● Perfect! I can see the Machine Cycles function has 4 outputs:
  - Output 1 (port 0): Scrap prompt
  - Output 2 (port 1): Production state
  - Output 3 (port 2): DB sync for session_state
  - Output 4 (port 3): Goes to DB Guard (Cycles) - this is what we need to modify!

  Now let me check what DB Guard (Cycles) does and what the 4th output currently sends:

● Read(projects/Plastico/flows.json)
  ⎿  Read 50 lines

● Good! I can see output 4 currently just goes to a debug node. Now let me look at what the current modified_machine_cycles.js sends on output 4 (the
  session-sync message):

  Looking at modified_machine_cycles.js lines 98-100, it currently sends the session-sync message. Now I need to:

  1. Add a 5th output for work_order persistence (to keep session-sync separate)
  2. OR Modify the existing 4th output to send work_order updates instead of/in addition to session updates

  Based on your feedback that "Machine cycles already has a 4th output connected to DB Guard for persistence of cycles", I'll create a 5th output for
  work_order updates to keep the existing session persistence logic intact.

  Let me modify the machine cycles function:

● Update(projects/Plastico/modified_machine_cycles.js)

● Update(projects/Plastico/modified_machine_cycles.js)

● Update(projects/Plastico/modified_machine_cycles.js)


Perfect! I can see Phase 1 was completed and Phase 2 was started. Let me create a todo list and continue with Phase 2 implementation, being careful with the existing 4th output to DB Guard.


TodoWrite

Review Phase 2 progress and understand DB Guard setup

Reviewing Phase 2 progress and DB Guard setup

Complete Phase 2: Add work_orders table persistence to machine cycles

Completing Phase 2: Adding work_orders persistence

Phase 3: Implement Resume/Restart prompt on Load

Phase 4: Fix Complete button to persist final counts

Phase 5: Update session restore to set RUNNING status

Phase 6: Load work order data from database (not session)

Phase 7: Add tab switch state refresh (optional)

Phase 8: Testing and validation


Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

Review Phase 2 progress and understand DB Guard setup

Reviewing Phase 2 progress and DB Guard setup

Complete Phase 2: Add work_orders table persistence to machine cycles

Completing Phase 2: Adding work_orders persistence

Phase 3: Implement Resume/Restart prompt on Load

Phase 4: Fix Complete button to persist final counts

Phase 5: Update session restore to set RUNNING status

Phase 6: Load work order data from database (not session)

Phase 7: Add tab switch state refresh (optional)

Phase 8: Testing and validation


Now let me read the modified_machine_cycles.js file to see the current state:


<tool_use_error>File does not exist.</tool_use_error>


Bash

find /home/mdares/projects/Plastico -name "*machine_cycles*" -type f

Find machine cycles files


The modified_machine_cycles.js file doesn't exist as a separate file - it's embedded in the flows.json. Let me extract the Machine Cycles function code from flows.json:


cat /home/mdares/projects/Plastico/flows.json | jq '.[] | select(.name == "Machine cycles")' 2>/dev/null

Extract Machine cycles function node


Machine cycles

const current = Number(msg.payload) || 0;

let zeroStreak = flow.get("zeroStreak") || 0;
zeroStreak = current === 0 ? zeroStreak + 1 : 0;
flow.set("zeroStreak", zeroStreak);

const prev = flow.get("lastMachineState") ?? 0;
flow.set("lastMachineState", current);

global.set("machineOnline", true);

let productionRunning = !!global.get("productionStarted");
let stateChanged = false;

if (current === 1 && !productionRunning) {
    productionRunning = true;
    stateChanged = true;
} else if (current === 0 && zeroStreak >= 2 && productionRunning) {
    productionRunning = false;
    stateChanged = true;
}

global.set("productionStarted", productionRunning);

const stateMsg = stateChanged
    ? {
        _mode: "production-state",
        machineOnline: true,
        productionStarted: productionRunning
    }
    : null;

const activeOrder = global.get("activeWorkOrder");
// FIX: moldActive is object, extract cavities property
const cavities = Number(global.get("moldActive")) || 1;
if (!activeOrder || !activeOrder.id || cavities <= 0) {
    return [null, stateMsg, { _triggerKPI: true }, null];
}

var trackingEnabled = !!global.get("trackingEnabled");
if (!trackingEnabled) {
    return [null, stateMsg, { _triggerKPI: true }, null];
}

if (prev === 1 || current !== 1) {
    return [null, stateMsg, { _triggerKPI: true }, null];
}

let cycles = Number(global.get("cycleCount") || 0) + 1;
global.set("cycleCount", cycles);

// Clear startup mode after first real cycle
if (global.get("kpiStartupMode")) {
    global.set("kpiStartupMode", false);
    node.warn('[MACHINE CYCLE] First cycle - cleared kpiStartupMode');
}

const now = Date.now();
const lastCycleTime = global.get("lastCycleTime") || now;
const timeSinceLastCycle = now - lastCycleTime;

let operatingTime = global.get("operatingTime") || 0;
operatingTime += (timeSinceLastCycle / 1000);

global.set("operatingTime", operatingTime);
node.warn(`[MACHINE CYCLE] operatingTime updated to ${operatingTime}`);
global.set("lastCycleTime", now);

const scrapTotal = Number(activeOrder.scrap) || 0;
const totalProduced = cycles * cavities;
// FIX: Guard negative produced
const produced = Math.max(0, totalProduced - scrapTotal);
const target = Number(activeOrder.target) || 0;
const progress = target > 0 ? Math.min(100, Math.round((produced / target) * 100)) : 0;

activeOrder.good = produced;
activeOrder.progressPercent = progress;
activeOrder.lastUpdateIso = new Date().toISOString();
global.set("activeWorkOrder", activeOrder);

const promptIssued = global.get("scrapPromptIssuedFor") || null;
if (!promptIssued && target > 0 && produced >= target) {
    global.set("scrapPromptIssuedFor", activeOrder.id);
    msg._mode = "scrap-prompt";
    msg.scrapPrompt = {
        id: activeOrder.id,
        sku: activeOrder.sku || "",
        target,
        produced
    };
    return [null, msg, null, null];
}

const dbMsg = {
    _mode: "cycle",
    cycle: {
        id: activeOrder.id,
        sku: activeOrder.sku || "",
        target,
        good: produced,
        scrap: Number(activeOrder.scrap) || 0,
        cycleTime: Number(activeOrder.cycleTime || activeOrder.theoreticalCycleTime || 0),
        progressPercent: progress,
        lastUpdateIso: activeOrder.lastUpdateIso,
        machineOnline: true,
        productionStarted: productionRunning
    },
    // SQL with bound parameters for safety
    topic: "UPDATE work_orders SET good_parts = ?, progress_percent = ?, updated_at = NOW() WHERE work_order_id = ?",
    payload: [produced, progress, activeOrder.id]
};

const kpiTrigger = { _triggerKPI: true };

if (trackingEnabled && dbMsg) {
    global.set("lastMachineCycleTime", Date.now());
}

// 4th output: persist cycle_count (msg.payload for MariaDB)
const persistCycleCount = {
    topic: "UPDATE work_orders SET cycle_count = ?, good_parts = ? WHERE work_order_id = ?",
    payload: [cycles, produced, activeOrder.id]
};

return [dbMsg, stateMsg, kpiTrigger, persistCycleCount];


Excellent! I can see that Phase 2 has actually been partially completed. The Machine Cycles function already has the 4th output that sends `persistCycleCount` with the SQL UPDATE for `cycle_count` and `good_parts`. Let me verify the DB Guard node and ensure the wiring is correct:


Bash

cat /home/mdares/projects/Plastico/flows.json | jq '.[] | select(.id == "db_guard_db_guard_cycles")' 2>/dev/null

Find DB Guard node


cat /home/mdares/projects/Plastico/flows.json | jq '.[] | select(.id == "f6ad294bc02618c9")' 2>/dev/null

Find node after DB Guard


Perfect! The wiring is already complete. The 4th output from Machine Cycles goes to DB Guard (Cycles), which then goes to the mariaDB node. However, I need to check if there's throttling in place. Let me look for any rate limiting or throttling logic:


cat /home/mdares/projects/Plastico/flows.json | jq '.[] | select(.name == "DB Guard (Cycles)") | .property' 2>/dev/null

Check DB Guard property


"topic"


The DB Guard is just a simple switch checking if topic is a string. According to the recommendations, we need 5-second throttling. Let me check if there's a delay or throttle node, and also check what the recommendation says about throttling:

Looking at the code in Machine Cycles, I can see the 4th output sends the UPDATE every cycle. The recommendation mentions "throttled DB update message (same 5s logic as session_state)". Let me search for any existing throttle nodes:


cat /home/mdares/projects/Plastico/flows.json | jq '[.[] | select(.type == "delay" or .type == "throttle")] | .[] | {id, name, type}' 2>/dev/null

Find throttle or delay nodes


There are no throttle nodes. The recommendation says to implement throttling "same as session_state". Looking at the Machine Cycles code, I don't see throttling logic there either - it sends messages on every cycle.

**Issue identified**: Phase 2 has been partially implemented (4th output exists with SQL), but throttling is missing. According to the recommendation, we need 5-second throttling to avoid excessive DB writes.

Let me update the todo and add throttling logic to the Machine Cycles function:


TodoWrite

Review Phase 2 progress and understand DB Guard setup

Reviewing Phase 2 progress and DB Guard setup

Add 5-second throttling to work_orders persistence

Adding 5-second throttling to persistence

Verify Phase 2 wiring and test persistence

Phase 3: Implement Resume/Restart prompt on Load

Phase 4: Fix Complete button to persist final counts

Phase 5: Update session restore to set RUNNING status

Phase 6: Load work order data from database (not session)

Phase 7: Add tab switch state refresh (optional)

Phase 8: Testing and validation


Phase 8: Testing and validation

Add 5-second throttling to work_orders persistence

Adding 5-second throttling to persistence

Verify Phase 2 wiring and test persistence

Phase 8: Testing and validation


Now I need to modify the Machine Cycles function to add 5-second throttling for the 4th output. Let me read the flows.json section with the Machine Cycles node to understand the exact format:


1175-    {
1176-        "id": "0d023d87a13bf56f",
1177-        "type": "function",
1178-        "z": "cac3a4383120cb57",
1179-        "g": "16bb591480852f51",
1180:        "name": "Machine cycles",
1181-[Omitted long context line]
1182-        "outputs": 4,
1183-        "timeout": 0,
1184-        "noerr": 0,
1185-        "initialize": "",
1186-        "finalize": "",
1187-        "libs": [],
1188-        "x": 640,
1189-        "y": 400,
1190-        "wires": [
1191-            [
1192-                "dbc7a5ee041845ed",
1193-                "68747d170d530562"
1194-            ],
1195-            [
1196-                "00b6132848964bd9",
1197-                "4b0281e42c6cd4d1"
1198-            ],
1199-            [
1200-                "00b6132848964bd9",
1201-                "b03da2270d8def93"
1202-            ],
1203-            [
1204-                "db_guard_db_guard_cycles",
1205-                "4fabedfe0668e215"
1206-            ]
1207-        ]
1208-    },
1209-    {
1210-        "id": "dbc7a5ee041845ed",
1211-        "type": "link out",
1212-        "z": "cac3a4383120cb57",
1213-        "g": "16bb591480852f51",
1214-        "name": "link out 5",
1215-        "mode": "link",
1216-        "links": [
1217-            "76ce53cf1ae40e9c"
1218-        ],
1219-        "x": 755,
1220-        "y": 380,
1221-        "wires": []
1222-    },
1223-    {
1224-        "id": "76ce53cf1ae40e9c",
1225-        "type": "link in",
1226-        "z": "cac3a4383120cb57",
1227-        "g": "b7ab5e0cc02b9508",
1228-        "name": "link in 5",
1229-        "links": [
1230-            "dbc7a5ee041845ed"


Now I'll modify the Machine Cycles function to add 5-second throttling for database persistence. I'll need to extract the current function code, modify it to add throttling logic, and then update flows.json:


Bash

cat /home/mdares/projects/Plastico/flows.json | jq '.[] | select(.name == "Machine cycles") | .func' -r > /tmp/machine_cycles_current.js

Extract current function code


     1→const current = Number(msg.payload) || 0;
     2→
     3→let zeroStreak = flow.get("zeroStreak") || 0;
     4→zeroStreak = current === 0 ? zeroStreak + 1 : 0;
     5→flow.set("zeroStreak", zeroStreak);
     6→
     7→const prev = flow.get("lastMachineState") ?? 0;
     8→flow.set("lastMachineState", current);
     9→
    10→global.set("machineOnline", true);
    11→
    12→let productionRunning = !!global.get("productionStarted");
    13→let stateChanged = false;
    14→
    15→if (current === 1 && !productionRunning) {
    16→    productionRunning = true;
    17→    stateChanged = true;
    18→} else if (current === 0 && zeroStreak >= 2 && productionRunning) {
    19→    productionRunning = false;
    20→    stateChanged = true;
    21→}
    22→
    23→global.set("productionStarted", productionRunning);
    24→
    25→const stateMsg = stateChanged
    26→    ? {
    27→        _mode: "production-state",
    28→        machineOnline: true,
    29→        productionStarted: productionRunning
    30→    }
    31→    : null;
    32→
    33→const activeOrder = global.get("activeWorkOrder");
    34→// FIX: moldActive is object, extract cavities property
    35→const cavities = Number(global.get("moldActive")) || 1;
    36→if (!activeOrder || !activeOrder.id || cavities <= 0) {
    37→    return [null, stateMsg, { _triggerKPI: true }, null];
    38→}
    39→
    40→var trackingEnabled = !!global.get("trackingEnabled");
    41→if (!trackingEnabled) {
    42→    return [null, stateMsg, { _triggerKPI: true }, null];
    43→}
    44→
    45→if (prev === 1 || current !== 1) {
    46→    return [null, stateMsg, { _triggerKPI: true }, null];
    47→}
    48→
    49→let cycles = Number(global.get("cycleCount") || 0) + 1;
    50→global.set("cycleCount", cycles);
    51→
    52→// Clear startup mode after first real cycle
    53→if (global.get("kpiStartupMode")) {
    54→    global.set("kpiStartupMode", false);
    55→    node.warn('[MACHINE CYCLE] First cycle - cleared kpiStartupMode');
    56→}
    57→
    58→const now = Date.now();
    59→const lastCycleTime = global.get("lastCycleTime") || now;
    60→const timeSinceLastCycle = now - lastCycleTime;
    61→
    62→let operatingTime = global.get("operatingTime") || 0;
    63→operatingTime += (timeSinceLastCycle / 1000);
    64→
    65→global.set("operatingTime", operatingTime);
    66→node.warn(`[MACHINE CYCLE] operatingTime updated to ${operatingTime}`);
    67→global.set("lastCycleTime", now);
    68→
    69→const scrapTotal = Number(activeOrder.scrap) || 0;
    70→const totalProduced = cycles * cavities;
    71→// FIX: Guard negative produced
    72→const produced = Math.max(0, totalProduced - scrapTotal);
    73→const target = Number(activeOrder.target) || 0;
    74→const progress = target > 0 ? Math.min(100, Math.round((produced / target) * 100)) : 0;
    75→
    76→activeOrder.good = produced;
    77→activeOrder.progressPercent = progress;
    78→activeOrder.lastUpdateIso = new Date().toISOString();
    79→global.set("activeWorkOrder", activeOrder);
    80→
    81→const promptIssued = global.get("scrapPromptIssuedFor") || null;
    82→if (!promptIssued && target > 0 && produced >= target) {
    83→    global.set("scrapPromptIssuedFor", activeOrder.id);
    84→    msg._mode = "scrap-prompt";
    85→    msg.scrapPrompt = {
    86→        id: activeOrder.id,
    87→        sku: activeOrder.sku || "",
    88→        target,
    89→        produced
    90→    };
    91→    return [null, msg, null, null];
    92→}
    93→
    94→const dbMsg = {
    95→    _mode: "cycle",
    96→    cycle: {
    97→        id: activeOrder.id,
    98→        sku: activeOrder.sku || "",
    99→        target,
   100→        good: produced,
   101→        scrap: Number(activeOrder.scrap) || 0,
   102→        cycleTime: Number(activeOrder.cycleTime || activeOrder.theoreticalCycleTime || 0),
   103→        progressPercent: progress,
   104→        lastUpdateIso: activeOrder.lastUpdateIso,
   105→        machineOnline: true,
   106→        productionStarted: productionRunning
   107→    },
   108→    // SQL with bound parameters for safety
   109→    topic: "UPDATE work_orders SET good_parts = ?, progress_percent = ?, updated_at = NOW() WHERE work_order_id = ?",
   110→    payload: [produced, progress, activeOrder.id]
   111→};
   112→
   113→const kpiTrigger = { _triggerKPI: true };
   114→
   115→if (trackingEnabled && dbMsg) {
   116→    global.set("lastMachineCycleTime", Date.now());
   117→}
   118→
   119→// 4th output: persist cycle_count (msg.payload for MariaDB)
   120→const persistCycleCount = {
   121→    topic: "UPDATE work_orders SET cycle_count = ?, good_parts = ? WHERE work_order_id = ?",
   122→    payload: [cycles, produced, activeOrder.id]
   123→};
   124→
   125→return [dbMsg, stateMsg, kpiTrigger, persistCycleCount];
   126→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

const current = Number(msg.payload) || 0;

let zeroStreak = flow.get("zeroStreak") || 0;
zeroStreak = current === 0 ? zeroStreak + 1 : 0;
flow.set("zeroStreak", zeroStreak);

const prev = flow.get("lastMachineState") ?? 0;
flow.set("lastMachineState", current);

global.set("machineOnline", true);

let productionRunning = !!global.get("productionStarted");
let stateChanged = false;

if (current === 1 && !productionRunning) {
    productionRunning = true;
    stateChanged = true;
} else if (current === 0 && zeroStreak >= 2 && productionRunning) {
    productionRunning = false;
    stateChanged = true;
}

global.set("productionStarted", productionRunning);

const stateMsg = stateChanged
    ? {
        _mode: "production-state",
        machineOnline: true,
        productionStarted: productionRunning
    }
    : null;

const activeOrder = global.get("activeWorkOrder");
// FIX: moldActive is object, extract cavities property
const cavities = Number(global.get("moldActive")) || 1;
if (!activeOrder || !activeOrder.id || cavities <= 0) {
    return [null, stateMsg, { _triggerKPI: true }, null];
}

var trackingEnabled = !!global.get("trackingEnabled");
if (!trackingEnabled) {
    return [null, stateMsg, { _triggerKPI: true }, null];
}

if (prev === 1 || current !== 1) {
    return [null, stateMsg, { _triggerKPI: true }, null];
}

let cycles = Number(global.get("cycleCount") || 0) + 1;
global.set("cycleCount", cycles);

// Clear startup mode after first real cycle
if (global.get("kpiStartupMode")) {
    global.set("kpiStartupMode", false);
    node.warn('[MACHINE CYCLE] First cycle - cleared kpiStartupMode');
}

const now = Date.now();
const lastCycleTime = global.get("lastCycleTime") || now;
const timeSinceLastCycle = now - lastCycleTime;

let operatingTime = global.get("operatingTime") || 0;
operatingTime += (timeSinceLastCycle / 1000);

global.set("operatingTime", operatingTime);
node.warn(`[MACHINE CYCLE] operatingTime updated to ${operatingTime}`);
global.set("lastCycleTime", now);

const scrapTotal = Number(activeOrder.scrap) || 0;
const totalProduced = cycles * cavities;
// FIX: Guard negative produced
const produced = Math.max(0, totalProduced - scrapTotal);
const target = Number(activeOrder.target) || 0;
const progress = target > 0 ? Math.min(100, Math.round((produced / target) * 100)) : 0;

activeOrder.good = produced;
activeOrder.progressPercent = progress;
activeOrder.lastUpdateIso = new Date().toISOString();
global.set("activeWorkOrder", activeOrder);

const promptIssued = global.get("scrapPromptIssuedFor") || null;
if (!promptIssued && target > 0 && produced >= target) {
    global.set("scrapPromptIssuedFor", activeOrder.id);
    msg._mode = "scrap-prompt";
    msg.scrapPrompt = {
        id: activeOrder.id,
        sku: activeOrder.sku || "",
        target,
        produced
    };
    return [null, msg, null, null];
}

const dbMsg = {
    _mode: "cycle",
    cycle: {
        id: activeOrder.id,
        sku: activeOrder.sku || "",
        target,
        good: produced,
        scrap: Number(activeOrder.scrap) || 0,
        cycleTime: Number(activeOrder.cycleTime || activeOrder.theoreticalCycleTime || 0),
        progressPercent: progress,
        lastUpdateIso: activeOrder.lastUpdateIso,
        machineOnline: true,
        productionStarted: productionRunning
    },
    // SQL with bound parameters for safety
    topic: "UPDATE work_orders SET good_parts = ?, progress_percent = ?, updated_at = NOW() WHERE work_order_id = ?",
    payload: [produced, progress, activeOrder.id]
};

const kpiTrigger = { _triggerKPI: true };

if (trackingEnabled && dbMsg) {
    global.set("lastMachineCycleTime", Date.now());
}

// 4th output: persist cycle_count (msg.payload for MariaDB)
const persistCycleCount = {
    topic: "UPDATE work_orders SET cycle_count = ?, good_parts = ? WHERE work_order_id = ?",
    payload: [cycles, produced, activeOrder.id]
};

return [dbMsg, stateMsg, kpiTrigger, persistCycleCount];


Now I'll modify the code to add 5-second throttling for the persistence message:


Write

const current = Number(msg.payload) || 0;

let zeroStreak = flow.get("zeroStreak") || 0;
zeroStreak = current === 0 ? zeroStreak + 1 : 0;
flow.set("zeroStreak", zeroStreak);

const prev = flow.get("lastMachineState") ?? 0;
flow.set("lastMachineState", current);

global.set("machineOnline", true);

let productionRunning = !!global.get("productionStarted");
let stateChanged = false;

if (current === 1 && !productionRunning) {
    productionRunning = true;
    stateChanged = true;
} else if (current === 0 && zeroStreak >= 2 && productionRunning) {
    productionRunning = false;
    stateChanged = true;
}

global.set("productionStarted", productionRunning);

const stateMsg = stateChanged
    ? {
        _mode: "production-state",
        machineOnline: true,
        productionStarted: productionRunning
    }
    : null;

const activeOrder = global.get("activeWorkOrder");
// FIX: moldActive is object, extract cavities property
const cavities = Number(global.get("moldActive")) || 1;
if (!activeOrder || !activeOrder.id || cavities <= 0) {
    return [null, stateMsg, { _triggerKPI: true }, null];
}

var trackingEnabled = !!global.get("trackingEnabled");
if (!trackingEnabled) {
    return [null, stateMsg, { _triggerKPI: true }, null];
}

if (prev === 1 || current !== 1) {
    return [null, stateMsg, { _triggerKPI: true }, null];
}

let cycles = Number(global.get("cycleCount") || 0) + 1;
global.set("cycleCount", cycles);

// Clear startup mode after first real cycle
if (global.get("kpiStartupMode")) {
    global.set("kpiStartupMode", false);
    node.warn('[MACHINE CYCLE] First cycle - cleared kpiStartupMode');
}

const now = Date.now();
const lastCycleTime = global.get("lastCycleTime") || now;
const timeSinceLastCycle = now - lastCycleTime;

let operatingTime = global.get("operatingTime") || 0;
operatingTime += (timeSinceLastCycle / 1000);

global.set("operatingTime", operatingTime);
node.warn(`[MACHINE CYCLE] operatingTime updated to ${operatingTime}`);
global.set("lastCycleTime", now);

const scrapTotal = Number(activeOrder.scrap) || 0;
const totalProduced = cycles * cavities;
// FIX: Guard negative produced
const produced = Math.max(0, totalProduced - scrapTotal);
const target = Number(activeOrder.target) || 0;
const progress = target > 0 ? Math.min(100, Math.round((produced / target) * 100)) : 0;

activeOrder.good = produced;
activeOrder.progressPercent = progress;
activeOrder.lastUpdateIso = new Date().toISOString();
global.set("activeWorkOrder", activeOrder);

const promptIssued = global.get("scrapPromptIssuedFor") || null;
if (!promptIssued && target > 0 && produced >= target) {
    global.set("scrapPromptIssuedFor", activeOrder.id);
    msg._mode = "scrap-prompt";
    msg.scrapPrompt = {
        id: activeOrder.id,
        sku: activeOrder.sku || "",
        target,
        produced
    };
    return [null, msg, null, null];
}

const dbMsg = {
    _mode: "cycle",
    cycle: {
        id: activeOrder.id,
        sku: activeOrder.sku || "",
        target,
        good: produced,
        scrap: Number(activeOrder.scrap) || 0,
        cycleTime: Number(activeOrder.cycleTime || activeOrder.theoreticalCycleTime || 0),
        progressPercent: progress,
        lastUpdateIso: activeOrder.lastUpdateIso,
        machineOnline: true,
        productionStarted: productionRunning
    },
    // SQL with bound parameters for safety
    topic: "UPDATE work_orders SET good_parts = ?, progress_percent = ?, updated_at = NOW() WHERE work_order_id = ?",
    payload: [produced, progress, activeOrder.id]
};

const kpiTrigger = { _triggerKPI: true };

if (trackingEnabled && dbMsg) {
    global.set("lastMachineCycleTime", Date.now());
}

// 4th output: persist cycle_count and good_parts (throttled to 5 seconds)
const lastDbWrite = global.get("lastWorkOrderDbWrite") || 0;
const timeSinceLastWrite = now - lastDbWrite;
let persistCycleCount = null;

// Only send DB update every 5 seconds (5000ms) to reduce DB load
if (timeSinceLastWrite >= 5000) {
    persistCycleCount = {
        topic: "UPDATE work_orders SET cycle_count = ?, good_parts = ?, progress_percent = ?, updated_at = NOW() WHERE work_order_id = ?",
        payload: [cycles, produced, progress, activeOrder.id]
    };
    global.set("lastWorkOrderDbWrite", now);
    node.warn(`[DB PERSIST] Writing to work_orders: cycles=${cycles}, good_parts=${produced}, progress=${progress}%`);
}

return [dbMsg, stateMsg, kpiTrigger, persistCycleCount];


File created successfully at: /tmp/machine_cycles_modified.js

const current = Number(msg.payload) || 0;

let zeroStreak = flow.get("zeroStreak") || 0;
zeroStreak = current === 0 ? zeroStreak + 1 : 0;
flow.set("zeroStreak", zeroStreak);

const prev = flow.get("lastMachineState") ?? 0;
flow.set("lastMachineState", current);

global.set("machineOnline", true);

let productionRunning = !!global.get("productionStarted");
let stateChanged = false;

if (current === 1 && !productionRunning) {
    productionRunning = true;
    stateChanged = true;
} else if (current === 0 && zeroStreak >= 2 && productionRunning) {
    productionRunning = false;
    stateChanged = true;
}

global.set("productionStarted", productionRunning);

const stateMsg = stateChanged
    ? {
        _mode: "production-state",
        machineOnline: true,
        productionStarted: productionRunning
    }
    : null;

const activeOrder = global.get("activeWorkOrder");
// FIX: moldActive is object, extract cavities property
const cavities = Number(global.get("moldActive")) || 1;
if (!activeOrder || !activeOrder.id || cavities <= 0) {
    return [null, stateMsg, { _triggerKPI: true }, null];
}

var trackingEnabled = !!global.get("trackingEnabled");
if (!trackingEnabled) {
    return [null, stateMsg, { _triggerKPI: true }, null];
}

if (prev === 1 || current !== 1) {
    return [null, stateMsg, { _triggerKPI: true }, null];
}

let cycles = Number(global.get("cycleCount") || 0) + 1;
global.set("cycleCount", cycles);

// Clear startup mode after first real cycle
if (global.get("kpiStartupMode")) {
    global.set("kpiStartupMode", false);
    node.warn('[MACHINE CYCLE] First cycle - cleared kpiStartupMode');
}

const now = Date.now();
const lastCycleTime = global.get("lastCycleTime") || now;
const timeSinceLastCycle = now - lastCycleTime;

let operatingTime = global.get("operatingTime") || 0;
operatingTime += (timeSinceLastCycle / 1000);

global.set("operatingTime", operatingTime);
node.warn(`[MACHINE CYCLE] operatingTime updated to ${operatingTime}`);
global.set("lastCycleTime", now);

const scrapTotal = Number(activeOrder.scrap) || 0;
const totalProduced = cycles * cavities;
// FIX: Guard negative produced
const produced = Math.max(0, totalProduced - scrapTotal);
const target = Number(activeOrder.target) || 0;
const progress = target > 0 ? Math.min(100, Math.round((produced / target) * 100)) : 0;

activeOrder.good = produced;
activeOrder.progressPercent = progress;
activeOrder.lastUpdateIso = new Date().toISOString();
global.set("activeWorkOrder", activeOrder);

const promptIssued = global.get("scrapPromptIssuedFor") || null;
if (!promptIssued && target > 0 && produced >= target) {
    global.set("scrapPromptIssuedFor", activeOrder.id);
    msg._mode = "scrap-prompt";
    msg.scrapPrompt = {
        id: activeOrder.id,
        sku: activeOrder.sku || "",
        target,
        produced
    };
    return [null, msg, null, null];
}

const dbMsg = {
    _mode: "cycle",
    cycle: {
        id: activeOrder.id,
        sku: activeOrder.sku || "",
        target,
        good: produced,
        scrap: Number(activeOrder.scrap) || 0,
        cycleTime: Number(activeOrder.cycleTime || activeOrder.theoreticalCycleTime || 0),
        progressPercent: progress,
        lastUpdateIso: activeOrder.lastUpdateIso,
        machineOnline: true,
        productionStarted: productionRunning
    },
    // SQL with bound parameters for safety
    topic: "UPDATE work_orders SET good_parts = ?, progress_percent = ?, updated_at = NOW() WHERE work_order_id = ?",
    payload: [produced, progress, activeOrder.id]
};

const kpiTrigger = { _triggerKPI: true };

if (trackingEnabled && dbMsg) {
    global.set("lastMachineCycleTime", Date.now());
}

// 4th output: persist cycle_count and good_parts (throttled to 5 seconds)
const lastDbWrite = global.get("lastWorkOrderDbWrite") || 0;
const timeSinceLastWrite = now - lastDbWrite;
let persistCycleCount = null;

// Only send DB update every 5 seconds (5000ms) to reduce DB load
if (timeSinceLastWrite >= 5000) {
    persistCycleCount = {
        topic: "UPDATE work_orders SET cycle_count = ?, good_parts = ?, progress_percent = ?, updated_at = NOW() WHERE work_order_id = ?",
        payload: [cycles, produced, progress, activeOrder.id]
    };
    global.set("lastWorkOrderDbWrite", now);
    node.warn(`[DB PERSIST] Writing to work_orders: cycles=${cycles}, good_parts=${produced}, progress=${progress}%`);
}

return [dbMsg, stateMsg, kpiTrigger, persistCycleCount];


Now I need to update the flows.json file with this modified function. I'll use jq to update just the func property:


Bash

cd /home/mdares/projects/Plastico && cp flows.json flows.json.backup_phase2_$(date +%Y%m%d_%H%M%S)

Backup flows.json before modification


Shell cwd was reset to /home/mdares/Desktop


Verify backup was created


-rw-r--r-- 1 mdares mdares 203K Nov 29 05:44 /home/mdares/projects/Plastico/flows.json
-rw-r--r-- 1 mdares mdares 146K Nov 21 15:22 /home/mdares/projects/Plastico/flows.json.backup
-rw-r--r-- 1 mdares mdares 148K Nov 21 15:22 /home/mdares/projects/Plastico/flows.json.backup_kpi
-rw-r--r-- 1 mdares mdares 156K Nov 21 15:22 /home/mdares/projects/Plastico/flows.json.backup_phase2
-rw-r--r-- 1 mdares mdares 203K Nov 29 05:56 /home/mdares/projects/Plastico/flows.json.backup_phase2_20251129_055629


Good, backup created. Now I'll update the flows.json with the modified function:


cd /home/mdares/projects/Plastico && FUNC_CODE=$(cat /tmp/machine_cycles_modified.js) && jq --arg func "$FUNC_CODE" '(.[] | select(.name == "Machine cycles") | .func) = $func' flows.json > /tmp/flows_updated.json && mv /tmp/flows_updated.json flows.json

Update Machine cycles function in flows.json


Let me verify the update was successful:


cat /home/mdares/projects/Plastico/flows.json | jq '.[] | select(.name == "Machine cycles") | .func' -r | grep -A 3 "5-second throttling"

Verify throttling code was added


cat /home/mdares/projects/Plastico/flows.json | jq '.[] | select(.name == "Machine cycles") | .func' -r | grep "lastWorkOrderDbWrite"

Verify throttling variable exists


const lastDbWrite = global.get("lastWorkOrderDbWrite") || 0;
    global.set("lastWorkOrderDbWrite", now);


Perfect! The throttling code has been added. Now let me verify the file size is reasonable:


wc -l /home/mdares/projects/Plastico/flows.json && jq '.' /home/mdares/projects/Plastico/flows.json > /dev/null && echo "JSON is valid" || echo "JSON is INVALID"

Verify JSON is valid


1807 /home/mdares/projects/Plastico/flows.json
JSON is valid


Excellent! The JSON is valid and has been updated. Let me update the todo list and create a summary of Phase 2 changes:


TodoWrite

Review Phase 2 progress and understand DB Guard setup

Reviewing Phase 2 progress and DB Guard setup

Add 5-second throttling to work_orders persistence

Adding 5-second throttling to persistence

Verify Phase 2 wiring and test persistence

Phase 3: Implement Resume/Restart prompt on Load

Phase 4: Fix Complete button to persist final counts

Phase 5: Update session restore to set RUNNING status

Phase 6: Load work order data from database (not session)

Phase 7: Add tab switch state refresh (optional)

Phase 8: Testing and validation


Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

Review Phase 2 progress and understand DB Guard setup

Phase 3: Implement Resume/Restart prompt on Load

Phase 4: Fix Complete button to persist final counts

Phase 5: Update session restore to set RUNNING status

Phase 6: Load work order data from database (not session)

Phase 7: Add tab switch state refresh (optional)

Phase 8: Testing and validation

Add 5-second throttling to work_orders persistence

Verify Phase 2 wiring and test persistence

Phase 8: Testing and validation


Now let me verify the wiring is still correct and create a verification summary:


Bash

cat /home/mdares/projects/Plastico/flows.json | jq '.[] | select(.name == "Machine cycles") | {outputs: .outputs, wires: .wires}' 2>/dev/null

Verify Machine cycles outputs and wiring


Perfect! Now let me update the todo and move to Phase 3. First, let me write a summary document of what was done in Phase 2:


Write

# Phase 2 Completion Summary

## Goal
Add cycle persistence to work_orders table with 5-second throttling

## Changes Made

### Modified Files
1. **flows.json** - Updated "Machine cycles" function node (ID: 0d023d87a13bf56f)

### Code Modifications

#### Machine Cycles Function (/home/mdares/projects/Plastico/flows.json:1180)

**Added throttling logic:**
- Added `lastWorkOrderDbWrite` global variable to track last DB write timestamp
- Implemented 5-second throttle (5000ms) for work_orders persistence
- Only sends DB update when `timeSinceLastWrite >= 5000`
- Added debug logging for DB writes

**Updated SQL query on 4th output:**
```sql
UPDATE work_orders
SET cycle_count = ?,
    good_parts = ?,
    progress_percent = ?,
    updated_at = NOW()
WHERE work_order_id = ?
```

**4th Output now sends** (when throttle allows):
```javascript
{
    topic: "UPDATE work_orders SET cycle_count = ?, good_parts = ?, progress_percent = ?, updated_at = NOW() WHERE work_order_id = ?",
    payload: [cycles, produced, progress, activeOrder.id]
}
```

### Wiring Verification

✅ Output 1 (port 0): Scrap prompt → link out + debug
✅ Output 2 (port 1): Production state → multiple consumers
✅ Output 3 (port 2): KPI trigger → multiple consumers
✅ Output 4 (port 3): **DB persistence** → DB Guard (Cycles) → mariaDB

### How It Works

1. Every machine cycle increments `cycleCount` and calculates `good_parts`
2. On every cycle, check if 5 seconds have passed since last DB write
3. If yes:
   - Send UPDATE message on output 4
   - Set `lastWorkOrderDbWrite` to current timestamp
   - Log the DB write operation
4. If no:
   - Send `null` on output 4 (no DB write)

### Data Loss Prevention

- **Maximum data loss on crash**: 5 seconds of cycles (typically 1-2 cycles depending on cycle time)
- Balances between:
  - Data persistence (resume work orders)
  - Database load (not writing every 3-15 second cycle)
  - Recovery granularity (acceptable for manufacturing use case)

### Backup Created

`flows.json.backup_phase2_20251129_055629`

## Risk Assessment

**Risk Level**: LOW
- Only adds throttled writes to existing logic
- Doesn't modify existing UI or state management
- Default values (0) won't break existing work orders
- DB writes use parameterized queries (SQL injection safe)

## Dependencies Met

✅ Phase 1 complete (schema has cycle_count, good_parts columns)
✅ Existing 4th output wiring to DB Guard intact
✅ MariaDB node configured and connected

## Next Steps

Ready for Phase 3: Implement Resume/Restart prompt on Load


File created successfully at: /home/mdares/projects/Plastico/PHASE2_COMPLETION_SUMMARY.md

# Phase 2 Completion Summary

## Goal
Add cycle persistence to work_orders table with 5-second throttling

## Changes Made

### Modified Files
1. **flows.json** - Updated "Machine cycles" function node (ID: 0d023d87a13bf56f)

### Code Modifications

#### Machine Cycles Function (/home/mdares/projects/Plastico/flows.json:1180)

**Added throttling logic:**
- Added `lastWorkOrderDbWrite` global variable to track last DB write timestamp
- Implemented 5-second throttle (5000ms) for work_orders persistence
- Only sends DB update when `timeSinceLastWrite >= 5000`
- Added debug logging for DB writes

**Updated SQL query on 4th output:**
```sql
UPDATE work_orders
SET cycle_count = ?,
    good_parts = ?,
    progress_percent = ?,
    updated_at = NOW()
WHERE work_order_id = ?
```

**4th Output now sends** (when throttle allows):
```javascript
{
    topic: "UPDATE work_orders SET cycle_count = ?, good_parts = ?, progress_percent = ?, updated_at = NOW() WHERE work_order_id = ?",
    payload: [cycles, produced, progress, activeOrder.id]
}
```

### Wiring Verification

✅ Output 1 (port 0): Scrap prompt → link out + debug
✅ Output 2 (port 1): Production state → multiple consumers
✅ Output 3 (port 2): KPI trigger → multiple consumers
✅ Output 4 (port 3): **DB persistence** → DB Guard (Cycles) → mariaDB

### How It Works

1. Every machine cycle increments `cycleCount` and calculates `good_parts`
2. On every cycle, check if 5 seconds have passed since last DB write
3. If yes:
   - Send UPDATE message on output 4
   - Set `lastWorkOrderDbWrite` to current timestamp
   - Log the DB write operation
4. If no:
   - Send `null` on output 4 (no DB write)

### Data Loss Prevention

- **Maximum data loss on crash**: 5 seconds of cycles (typically 1-2 cycles depending on cycle time)
- Balances between:
  - Data persistence (resume work orders)
  - Database load (not writing every 3-15 second cycle)
  - Recovery granularity (acceptable for manufacturing use case)

### Backup Created

`flows.json.backup_phase2_20251129_055629`

## Risk Assessment

**Risk Level**: LOW
- Only adds throttled writes to existing logic
- Doesn't modify existing UI or state management
- Default values (0) won't break existing work orders
- DB writes use parameterized queries (SQL injection safe)

## Dependencies Met

✅ Phase 1 complete (schema has cycle_count, good_parts columns)
✅ Existing 4th output wiring to DB Guard intact
✅ MariaDB node configured and connected

## Next Steps

Ready for Phase 3: Implement Resume/Restart prompt on Load


TodoWrite

Review Phase 2 progress and understand DB Guard setup

Reviewing Phase 2 progress and DB Guard setup

Add 5-second throttling to work_orders persistence

Adding 5-second throttling to persistence

Verify Phase 2 wiring and test persistence

Phase 3: Implement Resume/Restart prompt on Load

Phase 4: Fix Complete button to persist final counts

Phase 5: Update session restore to set RUNNING status

Phase 6: Load work order data from database (not session)

Phase 7: Add tab switch state refresh (optional)

Phase 8: Testing and validation


Phase 8: Testing and validation

Phase 8: Testing and validation


Now moving to Phase 3. Let me find the work order buttons function:


Bash

cat /home/mdares/projects/Plastico/flows.json | jq '.[] | select(.name | test("ork.*rder.*utton"; "i")) | {id, name, type}' 2>/dev/null

Find work order buttons node


Exit code 5


cat /home/mdares/projects/Plastico/flows.json | jq '.[] | select(.name == "Work Order buttons") | {id, name, type}' 2>/dev/null

Find Work Order buttons node


cat /home/mdares/projects/Plastico/flows.json | jq '.[] | select(.name == "Work Order buttons") | .func' -r > /tmp/work_order_buttons.js

Extract Work Order buttons function


     1→switch (msg.action) {
     2→    case "upload-excel":
     3→        msg._mode = "upload";
     4→        return [msg, null, null, null];
     5→    case "refresh-work-orders":
     6→        msg._mode = "select";
     7→        msg.topic = "SELECT * FROM work_orders ORDER BY created_at DESC;";
     8→        return [null, msg, null, null];
     9→    case "start-work-order": {
    10→        msg._mode = "start";
    11→        const order = msg.payload || {};
    12→        if (!order.id) {
    13→            node.error("No work order id supplied for start", msg);
    14→            return [null, null, null, null];
    15→        }
    16→        msg.startOrder = order;
    17→
    18→        // SQL with bound parameter for safety
    19→        msg.topic = "UPDATE work_orders SET status = CASE WHEN work_order_id = ? THEN 'RUNNING' ELSE 'PENDING' END, updated_at = CASE WHEN work_order_id = ? THEN NOW() ELSE updated_at END WHERE status <> 'DONE'";
    20→        msg.payload = [order.id, order.id];
    21→
    22→        global.set("activeWorkOrder", order);
    23→        global.set("cycleCount", 0);
    24→        flow.set("lastMachineState", 0);
    25→        global.set("scrapPromptIssuedFor", null);
    26→        return [null, null, msg, null];
    27→    }
    28→    case "complete-work-order": {
    29→        msg._mode = "complete";
    30→        const order = msg.payload || {};
    31→        if (!order.id) {
    32→            node.error("No work order id supplied for complete", msg);
    33→            return [null, null, null, null];
    34→        }
    35→        msg.completeOrder = order;
    36→        // SQL with bound parameter for safety
    37→        msg.topic = "UPDATE work_orders SET status = 'DONE', updated_at = NOW() WHERE work_order_id = ?";
    38→        msg.payload = [order.id];
    39→
    40→        // Clear ALL state on completion
    41→        global.set("activeWorkOrder", null);
    42→        global.set("trackingEnabled", false);
    43→        global.set("productionStarted", false);
    44→        global.set("kpiStartupMode", false);
    45→        global.set("operatingTime", 0);
    46→        global.set("lastCycleTime", null);
    47→        global.set("cycleCount", 0);
    48→        flow.set("lastMachineState", 0);
    49→        global.set("scrapPromptIssuedFor", null);
    50→
    51→        node.warn('[COMPLETE] Cleared all state flags');
    52→        return [null, null, null, msg];
    53→    }
    54→    case "get-current-state": {
    55→        // Return current state for UI sync on tab switch
    56→        const activeOrder = global.get("activeWorkOrder") || null;
    57→        const trackingEnabled = global.get("trackingEnabled") || false;
    58→        const productionStarted = global.get("productionStarted") || false;
    59→        const kpis = global.get("currentKPIs") || { oee: 0, availability: 0, performance: 0, quality: 0 };
    60→
    61→        msg._mode = "current-state";
    62→        msg.payload = {
    63→            activeWorkOrder: activeOrder,
    64→            trackingEnabled: trackingEnabled,
    65→            productionStarted: productionStarted,
    66→            kpis: kpis
    67→        };
    68→
    69→        return [null, msg, null, null];
    70→    }
    71→    case "restore-session": {
    72→        // Query DB for any RUNNING work order on startup
    73→        msg._mode = "restore-query";
    74→        msg.topic = "SELECT * FROM work_orders WHERE status = 'RUNNING' LIMIT 1";
    75→        msg.payload = [];
    76→        node.warn('[RESTORE] Checking for running work order on startup');
    77→        return [null, msg, null, null];
    78→    }
    79→    case "scrap-entry": {
    80→        const { id, scrap } = msg.payload || {};
    81→        const scrapNum = Number(scrap) || 0;
    82→
    83→        if (!id) {
    84→            node.error("No work order id supplied for scrap entry", msg);
    85→            return [null, null, null, null];
    86→        }
    87→
    88→        const activeOrder = global.get("activeWorkOrder");
    89→        if (activeOrder && activeOrder.id === id) {
    90→            activeOrder.scrap = (Number(activeOrder.scrap) || 0) + scrapNum;
    91→            global.set("activeWorkOrder", activeOrder);
    92→        }
    93→
    94→        global.set("scrapPromptIssuedFor", null);
    95→
    96→        msg._mode = "scrap-update";
    97→        msg.scrapEntry = { id, scrap: scrapNum };
    98→        // SQL with bound parameters for safety
    99→        msg.topic = "UPDATE work_orders SET scrap_parts = scrap_parts + ?, updated_at = NOW() WHERE work_order_id = ?";
   100→        msg.payload = [scrapNum, id];
   101→
   102→        return [null, null, msg, null];
   103→    }
   104→    case "scrap-skip": {
   105→        const { id, remindAgain } = msg.payload || {};
   106→
   107→        if (!id) {
   108→            node.error("No work order id supplied for scrap skip", msg);
   109→            return [null, null, null, null];
   110→        }
   111→
   112→        if (remindAgain) {
   113→            global.set("scrapPromptIssuedFor", null);
   114→        }
   115→
   116→        msg._mode = "scrap-skipped";
   117→        return [null, null, null, null];
   118→    }
   119→    case "start": {
   120→        // START with KPI timestamp init - FIXED
   121→        const now = Date.now();
   122→
   123→        global.set("trackingEnabled", true);
   124→        global.set("productionStarted", true);
   125→        global.set("kpiStartupMode", true);
   126→        global.set("kpiBuffer", []);
   127→        global.set("lastKPIRecordTime", now - 60000);
   128→        global.set("productionStartTime", now);
   129→        global.set("lastMachineCycleTime", now);
   130→        global.set("lastCycleTime", now);
   131→        global.set("operatingTime", 0);
   132→
   133→        node.warn('[START] Initialized: trackingEnabled=true, productionStarted=true, kpiStartupMode=true, operatingTime=0');
   134→
   135→        const activeOrder = global.get("activeWorkOrder") || {};
   136→        msg._mode = "production-state";
   137→
   138→        msg.payload = msg.payload || {};
   139→
   140→        msg.trackingEnabled = true;
   141→        msg.productionStarted = true;
   142→        msg.machineOnline = true;
   143→
   144→        msg.payload.trackingEnabled = true;
   145→        msg.payload.productionStarted = true;
   146→        msg.payload.machineOnline = true;
   147→
   148→        return [null, msg, null, null];
   149→    }
   150→    case "stop": {
   151→        global.set("trackingEnabled", false);
   152→        global.set("productionStarted", false);
   153→        node.warn('[STOP] Set trackingEnabled=false, productionStarted=false');
   154→
   155→        // Send UI update so button state reflects change
   156→        msg._mode = "production-state";
   157→        msg.payload = msg.payload || {};
   158→        msg.trackingEnabled = false;
   159→        msg.productionStarted = false;
   160→        msg.machineOnline = true;
   161→        msg.payload.trackingEnabled = false;
   162→        msg.payload.productionStarted = false;
   163→        msg.payload.machineOnline = true;
   164→
   165→        return [null, msg, null, null];
   166→    }
   167→    case "start-tracking": {
   168→        const activeOrder = global.get('activeOrder') || {};
   169→
   170→        if (!activeOrder.id) {
   171→            node.warn('[START] Cannot start tracking: No active order loaded.');
   172→            return [null, { topic: "alert", payload: "Error: No active work order loaded." }, null, null];
   173→        }
   174→
   175→        const now = Date.now();
   176→        global.set("trackingEnabled", true);
   177→        global.set("kpiBuffer", []);
   178→        global.set("lastKPIRecordTime", now - 60000);
   179→        global.set("lastMachineCycleTime", now);
   180→        global.set("lastCycleTime", now);
   181→        global.set("operatingTime", 0.001);
   182→        node.warn('[START] Cleared kpiBuffer for fresh production run');
   183→
   184→        // FIX: Use work_order_id consistently
   185→        const dbMsg = {
   186→            topic: `UPDATE work_orders SET production_start_time = ${now}, is_tracking = 1 WHERE work_order_id = '${activeOrder.id}'`,
   187→            payload: []
   188→        };
   189→
   190→        const stateMsg = {
   191→            topic: "machineStatus",
   192→            payload: msg.payload || {}
   193→        };
   194→
   195→        stateMsg.payload.trackingEnabled = true;
   196→        stateMsg.payload.productionStarted = true;
   197→        stateMsg.payload.machineOnline = true;
   198→
   199→        return [dbMsg, stateMsg, null, null];
   200→    }
   201→}
   202→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

switch (msg.action) {
    case "upload-excel":
        msg._mode = "upload";
        return [msg, null, null, null];
    case "refresh-work-orders":
        msg._mode = "select";
        msg.topic = "SELECT * FROM work_orders ORDER BY created_at DESC;";
        return [null, msg, null, null];
    case "start-work-order": {
        msg._mode = "start";
        const order = msg.payload || {};
        if (!order.id) {
            node.error("No work order id supplied for start", msg);
            return [null, null, null, null];
        }
        msg.startOrder = order;

        // SQL with bound parameter for safety
        msg.topic = "UPDATE work_orders SET status = CASE WHEN work_order_id = ? THEN 'RUNNING' ELSE 'PENDING' END, updated_at = CASE WHEN work_order_id = ? THEN NOW() ELSE updated_at END WHERE status <> 'DONE'";
        msg.payload = [order.id, order.id];

        global.set("activeWorkOrder", order);
        global.set("cycleCount", 0);
        flow.set("lastMachineState", 0);
        global.set("scrapPromptIssuedFor", null);
        return [null, null, msg, null];
    }
    case "complete-work-order": {
        msg._mode = "complete";
        const order = msg.payload || {};
        if (!order.id) {
            node.error("No work order id supplied for complete", msg);
            return [null, null, null, null];
        }
        msg.completeOrder = order;
        // SQL with bound parameter for safety
        msg.topic = "UPDATE work_orders SET status = 'DONE', updated_at = NOW() WHERE work_order_id = ?";
        msg.payload = [order.id];

        // Clear ALL state on completion
        global.set("activeWorkOrder", null);
        global.set("trackingEnabled", false);
        global.set("productionStarted", false);
        global.set("kpiStartupMode", false);
        global.set("operatingTime", 0);
        global.set("lastCycleTime", null);
        global.set("cycleCount", 0);
        flow.set("lastMachineState", 0);
        global.set("scrapPromptIssuedFor", null);

        node.warn('[COMPLETE] Cleared all state flags');
        return [null, null, null, msg];
    }
    case "get-current-state": {
        // Return current state for UI sync on tab switch
        const activeOrder = global.get("activeWorkOrder") || null;
        const trackingEnabled = global.get("trackingEnabled") || false;
        const productionStarted = global.get("productionStarted") || false;
        const kpis = global.get("currentKPIs") || { oee: 0, availability: 0, performance: 0, quality: 0 };

        msg._mode = "current-state";
        msg.payload = {
            activeWorkOrder: activeOrder,
            trackingEnabled: trackingEnabled,
            productionStarted: productionStarted,
            kpis: kpis
        };

        return [null, msg, null, null];
    }
    case "restore-session": {
        // Query DB for any RUNNING work order on startup
        msg._mode = "restore-query";
        msg.topic = "SELECT * FROM work_orders WHERE status = 'RUNNING' LIMIT 1";
        msg.payload = [];
        node.warn('[RESTORE] Checking for running work order on startup');
        return [null, msg, null, null];
    }
    case "scrap-entry": {
        const { id, scrap } = msg.payload || {};
        const scrapNum = Number(scrap) || 0;

        if (!id) {
            node.error("No work order id supplied for scrap entry", msg);
            return [null, null, null, null];
        }

        const activeOrder = global.get("activeWorkOrder");
        if (activeOrder && activeOrder.id === id) {
            activeOrder.scrap = (Number(activeOrder.scrap) || 0) + scrapNum;
            global.set("activeWorkOrder", activeOrder);
        }

        global.set("scrapPromptIssuedFor", null);

        msg._mode = "scrap-update";
        msg.scrapEntry = { id, scrap: scrapNum };
        // SQL with bound parameters for safety
        msg.topic = "UPDATE work_orders SET scrap_parts = scrap_parts + ?, updated_at = NOW() WHERE work_order_id = ?";
        msg.payload = [scrapNum, id];

        return [null, null, msg, null];
    }
    case "scrap-skip": {
        const { id, remindAgain } = msg.payload || {};

        if (!id) {
            node.error("No work order id supplied for scrap skip", msg);
            return [null, null, null, null];
        }

        if (remindAgain) {
            global.set("scrapPromptIssuedFor", null);
        }

        msg._mode = "scrap-skipped";
        return [null, null, null, null];
    }
    case "start": {
        // START with KPI timestamp init - FIXED
        const now = Date.now();

        global.set("trackingEnabled", true);
        global.set("productionStarted", true);
        global.set("kpiStartupMode", true);
        global.set("kpiBuffer", []);
        global.set("lastKPIRecordTime", now - 60000);
        global.set("productionStartTime", now);
        global.set("lastMachineCycleTime", now);
        global.set("lastCycleTime", now);
        global.set("operatingTime", 0);

        node.warn('[START] Initialized: trackingEnabled=true, productionStarted=true, kpiStartupMode=true, operatingTime=0');

        const activeOrder = global.get("activeWorkOrder") || {};
        msg._mode = "production-state";

        msg.payload = msg.payload || {};

        msg.trackingEnabled = true;
        msg.productionStarted = true;
        msg.machineOnline = true;

        msg.payload.trackingEnabled = true;
        msg.payload.productionStarted = true;
        msg.payload.machineOnline = true;

        return [null, msg, null, null];
    }
    case "stop": {
        global.set("trackingEnabled", false);
        global.set("productionStarted", false);
        node.warn('[STOP] Set trackingEnabled=false, productionStarted=false');

        // Send UI update so button state reflects change
        msg._mode = "production-state";
        msg.payload = msg.payload || {};
        msg.trackingEnabled = false;
        msg.productionStarted = false;
        msg.machineOnline = true;
        msg.payload.trackingEnabled = false;
        msg.payload.productionStarted = false;
        msg.payload.machineOnline = true;

        return [null, msg, null, null];
    }
    case "start-tracking": {
        const activeOrder = global.get('activeOrder') || {};

        if (!activeOrder.id) {
            node.warn('[START] Cannot start tracking: No active order loaded.');
            return [null, { topic: "alert", payload: "Error: No active work order loaded." }, null, null];
        }

        const now = Date.now();
        global.set("trackingEnabled", true);
        global.set("kpiBuffer", []);
        global.set("lastKPIRecordTime", now - 60000);
        global.set("lastMachineCycleTime", now);
        global.set("lastCycleTime", now);
        global.set("operatingTime", 0.001);
        node.warn('[START] Cleared kpiBuffer for fresh production run');

        // FIX: Use work_order_id consistently
        const dbMsg = {
            topic: `UPDATE work_orders SET production_start_time = ${now}, is_tracking = 1 WHERE work_order_id = '${activeOrder.id}'`,
            payload: []
        };

        const stateMsg = {
            topic: "machineStatus",
            payload: msg.payload || {}
        };

        stateMsg.payload.trackingEnabled = true;
        stateMsg.payload.productionStarted = true;
        stateMsg.payload.machineOnline = true;

        return [dbMsg, stateMsg, null, null];
    }
}


Perfect! Now I can see the current "start-work-order" case at lines 9-27. According to Phase 3 requirements, I need to:

1. Query the database for existing cycle_count and good_parts before loading
2. If progress exists, send a prompt to UI for Resume/Restart choice
3. Add two new action handlers: "resume-work-order" and "restart-work-order"

Let me create the modified version: