[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"skill:01M6KFNHTDSZZFJ71NS82B1T1C":3,"skill-same:01M6KFNHTDSZZFJ71NS82B1T1C":74},{"skillNo":4,"name":5,"nameZh":6,"description":7,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":16,"categories":17,"keywords":26,"publishedAt":41,"linkOnly":42,"markdownContent":43,"markdownBody":44,"frontMatter":45,"refName":46,"commitSha":47,"skillDirectory":48,"forksCount":14,"repositoryHtmlUrl":49,"repositoryHomepageUrl":6,"ownerHtmlUrl":50,"ownerBlogUrl":51,"ownerDescription":52,"updatedAt":53,"install":54,"resources":67},"01M6KFNHTDSZZFJ71NS82B1T1C","unified-deliverables-flow",null,"Generate spreadsheets, diagrams, and PDF reports in a phased workflow with explicit iteration budgets and error recovery","xyliu-cs\u002FOpenSpace-GDPval","xyliu-cs","https:\u002F\u002Favatars.githubusercontent.com\u002Fu\u002F89236536?v=4","01M6KF8Z1V4TXS86CKSH48BY8T","xy","01M6KF8Z67443W0SHXM85JEF0B",0,"MIT","https:\u002F\u002Fgithub.com\u002Fxyliu-cs\u002FOpenSpace-GDPval\u002Fblob\u002Fmain\u002Fgdpval_bench\u002Fskills\u002Fpdf-checklist-workflow-enhanced\u002FSKILL.md",[18,23],{"categoryNo":19,"categoryName":20,"taxonomyType":21,"taxonomyTypeDesc":22},"01JBSEEDCAT000000000000002","文档处理","SCENARIO","使用场景",{"categoryNo":24,"categoryName":25,"taxonomyType":21,"taxonomyTypeDesc":22},"01JBSEEDCAT000000000000023","Skill与智能体开发",[27,28,29,30,31,32,33,34,35,36,37,38,39,40],"flow","deliverables","unified deliverables flow","PDF","workflow","spreadsheets","error recovery","generate","recovery","reports","diagrams","iteration","error","with","2026-11-10 10:12:30",false,"---\nname: unified-deliverables-flow\ndescription: Generate spreadsheets, diagrams, and PDF reports in a phased workflow with explicit iteration budgets and error recovery\n---\n\n# Unified Multi-Deliverable Generation Workflow\n\nThis skill provides a structured, phased approach for creating multiple deliverable types (spreadsheets, diagrams, PDF reports) in a single cohesive workflow with explicit iteration budgeting to prevent premature exhaustion.\n\n## Overview\n\nUse this workflow when you need to:\n- Generate **multiple deliverable types** (Excel, images, PDFs) in one task\n- Ensure **balanced iteration allocation** across all deliverables\n- Handle **tool failures gracefully** with retries and fallbacks\n- Produce **downloadable artifacts** with verified paths\n\n## Critical: Iteration Budget Allocation\n\n**Allocate iterations BEFORE starting work:**\n\n| Phase | Deliverable | Budget | Checkpoint |\n|-------|-------------|--------|------------|\n| Phase 1 | Spreadsheet | 8 iterations | File exists + readable |\n| Phase 2 | Diagram | 8 iterations | File exists + >1KB |\n| Phase 3 | PDF Report | 8 iterations | File exists + ARTIFACT_PATH output |\n| Buffer | Error recovery | 6 iterations | Remaining for retries |\n| **Total** | **All deliverables** | **30 iterations** | **All verified** |\n\n**Rules:**\n- Complete each phase before moving to the next\n- If a phase exceeds budget, use fallback strategy (see below)\n- Never spend >10 iterations on a single deliverable without checkpoint\n- Verify each deliverable before proceeding\n\n## Step-by-Step Instructions\n\n### Phase 0: Pre-Work Setup (1 iteration max)\n\n1. **Define all deliverables explicitly:**\n   ```\n   Deliverable 1: hardware_selection_table.xlsx (Excel with comparison data)\n   Deliverable 2: cnc_workcell_layout.png (PNG diagram of layout)\n   Deliverable 3: final_report.pdf (PDF summary report)\n   ```\n\n2. **Verify workspace is accessible:**\n   ```\n   run_shell\n     command: ls -la \u002Fworkspace\u002F && mkdir -p \u002Fworkspace\u002Fartifacts\n   ```\n\n3. **Set path variables for consistency:**\n   - All files go to `\u002Fworkspace\u002F` or `\u002Fworkspace\u002Fartifacts\u002F`\n   - Use absolute paths in all code\n   - Never use relative paths like `.\u002Foutput.xlsx`\n\n### Phase 1: Spreadsheet Generation (Budget: 8 iterations)\n\n**Step 1.1: Choose approach**\n\n| Method | Tool | Best For |\n|--------|------|----------|\n| Direct Python | `execute_code_sandbox` | Quick generation, simple tables |\n| Shell agent | `shell_agent` | Complex logic, error recovery |\n\n**Step 1.2: Create spreadsheet code**\n\n```python\nfrom openpyxl import Workbook\nfrom openpyxl.styles import Font, Alignment, Border, Side\n\ndef create_hardware_table():\n    wb = Workbook()\n    ws = wb.active\n    ws.title = \"Hardware Selection\"\n    \n    # Headers with styling\n    headers = [\"Component\", \"Option A\", \"Option B\", \"Option C\", \"Recommendation\"]\n    for col, header in enumerate(headers, 1):\n        cell = ws.cell(row=1, column=col, value=header)\n        cell.font = Font(bold=True)\n        cell.alignment = Alignment(horizontal='center')\n    \n    # Data rows\n    data = [\n        [\"Controller\", \"PLC-X100 ($500)\", \"PLC-Y200 ($650)\", \"PLC-Z300 ($800)\", \"PLC-Y200\"],\n        [\"Motor\", \"Servo-500W ($300)\", \"Servo-750W ($400)\", \"Stepper-1kW ($250)\", \"Servo-750W\"],\n        [\"Sensor\", \"Proximity-S1 ($50)\", \"Vision-V2 ($200)\", \"Laser-L3 ($150)\", \"Vision-V2\"]\n    ]\n    \n    for row_idx, row_data in enumerate(data, 2):\n        for col_idx, value in enumerate(row_data, 1):\n            ws.cell(row=row_idx, column=col_idx, value=value)\n    \n    # Auto-adjust column widths\n    for col in ws.columns:\n        max_length = max(len(str(cell.value)) for cell in col if cell.value)\n        ws.column_dimensions[col[0].column_letter].width = min(max_length + 2, 25)\n    \n    output_path = '\u002Fworkspace\u002Fhardware_selection_table.xlsx'\n    wb.save(output_path)\n    print(f'SUCCESS: Spreadsheet created at {output_path}')\n    print(f'ARTIFACT_PATH:{output_path}')\n    return output_path\n\ncreate_hardware_table()\n```\n\n**Step 1.3: Execute with verification**\n\n```\nexecute_code_sandbox\n  code: \u003Cspreadsheet code from Step 1.2>\n  language: python\n```\n\n**Step 1.4: Verify (REQUIRED before proceeding)**\n\n```\nrun_shell\n  command: ls -lh \u002Fworkspace\u002F*.xlsx && python3 -c \"import openpyxl; openpyxl.load_workbook('\u002Fworkspace\u002Fhardware_selection_table.xlsx')\"\n```\n\n**Checkpoint criteria:**\n- ✓ File exists\n- ✓ Size > 1KB\n- ✓ No errors opening file\n- ✗ If failed, retry once with shell_agent, then proceed to Phase 2 with note\n\n### Phase 2: Diagram Generation (Budget: 8 iterations)\n\n**Step 2.1: Choose diagram type and tool**\n\n| Diagram Type | Tool | Library |\n|--------------|------|---------|\n| Flowchart\u002FBlocks | `execute_code_sandbox` | matplotlib, graphviz |\n| Layout\u002FFloorplan | `shell_agent` | matplotlib, PIL |\n| Architecture | `execute_code_sandbox` | matplotlib, diagram |\n\n**Step 2.2: Create diagram code (matplotlib example)**\n\n```python\nimport matplotlib.pyplot as plt\nimport matplotlib.patches as patches\n\ndef create_layout_diagram():\n    fig, ax = plt.subplots(figsize=(12, 8))\n    ax.set_xlim(0, 100)\n    ax.set_ylim(0, 80)\n    ax.set_aspect('equal')\n    ax.set_title('CNC Workcell Layout', fontsize=16, pad=20)\n    \n    # Define workcell components\n    components = [\n        {'label': 'CNC Machine', 'xy': (30, 40), 'w': 25, 'h': 20, 'color': '#3498db'},\n        {'label': 'Robot Arm', 'xy': (60, 40), 'w': 15, 'h': 15, 'color': '#e74c3c'},\n        {'label': 'Material Rack', 'xy': (10, 20), 'w': 15, 'h': 40, 'color': '#2ecc71'},\n        {'label': 'Control Panel', 'xy': (75, 60), 'w': 12, 'h': 10, 'color': '#f39c12'},\n        {'label': 'Safety Zone', 'xy': (25, 35), 'w': 50, 'h': 30, 'color': 'none', 'edge': '#95a5a6', 'dashed': True}\n    ]\n    \n    for comp in components:\n        if comp.get('edge'):\n            rect = patches.Rectangle(\n                (comp['xy'][0], comp['xy'][1]), \n                comp['w'], comp['h'],\n                linewidth=2, \n                edgecolor=comp['edge'],\n                facecolor=comp['color'],\n                linestyle='--' if comp.get('dashed') else '-'\n            )\n        else:\n            rect = patches.Rectangle(\n                (comp['xy'][0], comp['xy'][1]), \n                comp['w'], comp['h'],\n                linewidth=2, \n                edgecolor='black',\n                facecolor=comp['color']\n            )\n        ax.add_patch(rect)\n        ax.text(\n            comp['xy'][0] + comp['w']\u002F2, \n            comp['xy'][1] + comp['h']\u002F2, \n            comp['label'],\n            ha='center', va='center', fontsize=10, fontweight='bold'\n        )\n    \n    plt.grid(True, alpha=0.3)\n    plt.xlabel('Distance (m)')\n    plt.ylabel('Distance (m)')\n    \n    output_path = '\u002Fworkspace\u002Fcnc_workcell_layout.png'\n    plt.savefig(output_path, dpi=150, bbox_inches='tight')\n    plt.close()\n    print(f'SUCCESS: Diagram created at {output_path}')\n    print(f'ARTIFACT_PATH:{output_path}')\n    return output_path\n\ncreate_layout_diagram()\n```\n\n**Step 2.3: Execute and verify**\n\n```\nexecute_code_sandbox\n  code: \u003Cdiagram code from Step 2.2>\n  language: python\n```\n\n**Verification:**\n```\nrun_shell\n  command: ls -lh \u002Fworkspace\u002F*.png && file \u002Fworkspace\u002F*.png\n```\n\n**Checkpoint criteria:**\n- ✓ File exists\n- ✓ Size > 1KB\n- ✓ File type confirmed as PNG\u002Fimage\n- ✗ If failed after 2 retries, use shell_agent fallback, then proceed\n\n### Phase 3: PDF Report Generation (Budget: 8 iterations)\n\n**Step 3.1: Prepare content aggregation**\n\nGather data from previous phases:\n- Spreadsheet: key findings, recommendations\n- Diagram: visual summary\n- Additional: scoring, conclusions\n\n**Step 3.2: Create PDF generation code**\n\n```python\nfrom reportlab.lib import colors\nfrom reportlab.lib.pagesizes import letter\nfrom reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, Table, TableStyle, Image\nfrom reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle\nfrom reportlab.lib.units import inch\nfrom reportlab.lib.enums import TA_CENTER, TA_LEFT\n\ndef create_final_report(output_path):\n    doc = SimpleDocTemplate(output_path, pagesize=letter,\n                           rightMargin=0.75*inch, leftMargin=0.75*inch,\n                           topMargin=0.75*inch, bottomMargin=0.75*inch)\n    styles = getSampleStyleSheet()\n    story = []\n    \n    # Custom styles\n    title_style = ParagraphStyle('CustomTitle', parent=styles['Heading1'],\n                                  fontSize=20, spaceAfter=30, alignment=TA_CENTER,\n                                  fontName='Helvetica-Bold')\n    heading_style = ParagraphStyle('CustomHeading', parent=styles['Heading2'],\n                                    fontSize=14, spaceAfter=12, spaceBefore=20,\n                                    fontName='Helvetica-Bold')\n    \n    # Title\n    story.append(Paragraph(\"CNC Workcell Implementation Report\", title_style))\n    story.append(Spacer(1, 0.5*inch))\n    \n    # Executive Summary\n    story.append(Paragraph(\"Executive Summary\", heading_style))\n    summary_text = \"\"\"\n    This report presents the hardware selection analysis and workcell layout \n    for the proposed CNC implementation. After evaluating multiple options across \n    controllers, motors, and sensors, recommended configurations balance cost, \n    performance, and reliability.\n    \"\"\"\n    story.append(Paragraph(summary_text, styles['Normal']))\n    story.append(Spacer(1, 0.3*inch))\n    \n    # Hardware Selection Table\n    story.append(Paragraph(\"Hardware Selection Summary\", heading_style))\n    data = [\n        ['Component', 'Recommended Option', 'Cost', 'Rationale'],\n        ['Controller', 'PLC-Y200', '$650', 'Best cost\u002Fperformance balance'],\n        ['Motor', 'Servo-750W', '$400', 'Adequate power with precision'],\n        ['Sensor', 'Vision-V2', '$200', 'Enables quality inspection']\n    ]\n    \n    table = Table(data, colWidths=[1.5*inch, 1.7*inch, 1*inch, 2.3*inch])\n    table.setStyle(TableStyle([\n        ('BACKGROUND', (0, 0), (-1, 0), colors '#2c3e50'),\n        ('TEXTCOLOR', (0, 0), (-1, 0), colors.whitesmoke),\n        ('ALIGN', (0, 0), (-1, -1), 'CENTER'),\n        ('FONTNAME', (0, 0), (-1, 0), 'Helvetica-Bold'),\n        ('FONTSIZE', (0, 0), (-1, 0), 11),\n        ('BOTTOMPADDING', (0, 0), (-1, 0), 12),\n        ('BACKGROUND', (0, 1), (-1, -1), colors.beige),\n        ('GRID', (0, 0), (-1, -1), 1, colors.black),\n        ('VALIGN', (0, 0), (-1, -1), 'MIDDLE')\n    ]))\n    story.append(table)\n    story.append(Spacer(1, 0.4*inch))\n    \n    # Layout Diagram Reference\n    story.append(Paragraph(\"Workcell Layout\", heading_style))\n    story.append(Paragraph(\"See attached diagram: cnc_workcell_layout.png\", styles['Normal']))\n    story.append(Spacer(1, 0.2*inch))\n    \n    # Recommendations\n    story.append(Paragraph(\"Implementation Recommendations\", heading_style))\n    rec_text = \"\"\"\n    1. Begin with controller installation and configuration\n    2. Integrate motor drives and verify motion control\n    3. Install and calibrate vision system\n    4. Conduct safety zone validation\n    5. Perform full system integration testing\n    \"\"\"\n    story.append(Paragraph(rec_text, styles['Normal']))\n    story.append(Spacer(1, 0.5*inch))\n    \n    # Footer\n    story.append(Spacer(1, 0.5*inch))\n    footer_style = ParagraphStyle('Footer', parent=styles['Normal'],\n                                   fontSize=9, alignment=TA_CENTER, textColor=colors.grey)\n    story.append(Paragraph(\"Generated by Unified Deliverables Workflow\", footer_style))\n    \n    doc.build(story)\n    print(f'SUCCESS: PDF report created at {output_path}')\n    print(f'ARTIFACT_PATH:{output_path}')\n    return output_path\n\ncreate_final_report('\u002Fworkspace\u002Ffinal_report.pdf')\n```\n\n**Step 3.3: Execute with explicit artifact path**\n\n```\nexecute_code_sandbox\n  code: \u003CPDF code from Step 3.2>\n  language: python\n```\n\n**Step 3.4: Final verification**\n\n```\nrun_shell\n  command: ls -lh \u002Fworkspace\u002F*.pdf && echo \"---\" && ls -lh \u002Fworkspace\u002F*.xlsx \u002Fworkspace\u002F*.png\n```\n\n**Checkpoint criteria:**\n- ✓ PDF file exists\n- ✓ Size > 10KB (reports should be substantial)\n- ✓ ARTIFACT_PATH was output\n- ✓ All three deliverables verified\n\n## Error Recovery & Fallback Strategies\n\n### When execute_code_sandbox fails repeatedly:\n\n**Strategy 1: Use shell_agent (more resilient)**\n```\nshell_agent\n  task: Create an Excel file at \u002Fworkspace\u002Fhardware_selection_table.xlsx with hardware comparison data including controllers, motors, and sensors with costs and recommendations\n```\n\n**Strategy 2: Simplify the code**\n- Remove complex styling\n- Use basic libraries only (csv instead of openpyxl if needed)\n- Reduce dependencies\n\n**Strategy 3: Change output format**\n- Excel → CSV if openpyxl fails\n- PNG → SVG if PIL\u002Fmatplotlib fails\n- PDF → Markdown + convert later\n\n### When iteration budget is running low:\n\n| Iterations Remaining | Action |\n|---------------------|--------|\n| \u003C 10 | Skip non-critical formatting, use minimal viable output |\n| \u003C 5 | Use simplest possible implementation, skip verification |\n| \u003C 3 | Output text summary with file paths, request manual generation |\n\n## Best Practices\n\n1. **Phase sequentially** - Complete and verify each phase before moving on\n2. **Use absolute paths** - Always `\u002Fworkspace\u002Ffilename.ext`, never relative\n3. **Output ARTIFACT_PATH** - Every successful generation must print this\n4. **Verify before proceeding** - Run shell check after each deliverable\n5. **Track iteration count** - Count tool calls, stop at 25 to leave buffer\n6. **Simplify on failure** - If complex code fails, strip to minimum viable\n7. **Document decisions** - Note why fallback was used for future reference\n\n## Quick Reference: Tool Selection\n\n| Task | Primary Tool | Fallback Tool |\n|------|--------------|---------------|\n| Spreadsheet | execute_code_sandbox (openpyxl) | shell_agent (pandas) |\n| Diagram | execute_code_sandbox (matplotlib) | shell_agent (graphviz) |\n| PDF Report | execute_code_sandbox (reportlab) | shell_agent (fpdf) |\n| Verification | run_shell (ls, file) | read_file (for content check) |\n\n## Complete Workflow Checklist\n\n- [ ] Phase 0: Defined all 3 deliverables with paths\n- [ ] Phase 0: Verified workspace accessibility\n- [ ] Phase 1: Spreadsheet created and verified (\u003C 8 iterations)\n- [ ] Phase 2: Diagram created and verified (\u003C 8 iterations)\n- [ ] Phase 3: PDF created and verified (\u003C 8 iterations)\n- [ ] All ARTIFACT_PATH outputs captured\n- [ ] Final verification: all files exist with appropriate sizes\n- [ ] Total iterations used ≤ 30\n\n## Troubleshooting\n\n| Problem | Immediate Action |\n|---------|-----------------|\n| execute_code_sandbox returns \"[ERROR] unknown error\" | Retry once, then switch to shell_agent |\n| File not found after execution | Check actual path with `run_shell: ls \u002Fworkspace\u002F` |\n| ARTIFACT_PATH not output | Re-run with explicit print statement |\n| Iteration budget nearly exhausted | Skip remaining deliverables, document what was created |\n| Library import fails | Add `!pip install \u003Clibrary>` at code start |\n\n## Related Tools\n\n- `execute_code_sandbox` - Primary tool for code execution (Python)\n- `shell_agent` - Fallback for complex tasks or when sandbox fails\n- `run_shell` - Verification and workspace inspection\n- `read_file` - Content verification (type: xlsx, png, pdf)\n- `create_file` - Alternative for text-based outputs\n","# Unified Multi-Deliverable Generation Workflow\n\nThis skill provides a structured, phased approach for creating multiple deliverable types (spreadsheets, diagrams, PDF reports) in a single cohesive workflow with explicit iteration budgeting to prevent premature exhaustion.\n\n## Overview\n\nUse this workflow when you need to:\n- Generate **multiple deliverable types** (Excel, images, PDFs) in one task\n- Ensure **balanced iteration allocation** across all deliverables\n- Handle **tool failures gracefully** with retries and fallbacks\n- Produce **downloadable artifacts** with verified paths\n\n## Critical: Iteration Budget Allocation\n\n**Allocate iterations BEFORE starting work:**\n\n| Phase | Deliverable | Budget | Checkpoint |\n|-------|-------------|--------|------------|\n| Phase 1 | Spreadsheet | 8 iterations | File exists + readable |\n| Phase 2 | Diagram | 8 iterations | File exists + >1KB |\n| Phase 3 | PDF Report | 8 iterations | File exists + ARTIFACT_PATH output |\n| Buffer | Error recovery | 6 iterations | Remaining for retries |\n| **Total** | **All deliverables** | **30 iterations** | **All verified** |\n\n**Rules:**\n- Complete each phase before moving to the next\n- If a phase exceeds budget, use fallback strategy (see below)\n- Never spend >10 iterations on a single deliverable without checkpoint\n- Verify each deliverable before proceeding\n\n## Step-by-Step Instructions\n\n### Phase 0: Pre-Work Setup (1 iteration max)\n\n1. **Define all deliverables explicitly:**\n   ```\n   Deliverable 1: hardware_selection_table.xlsx (Excel with comparison data)\n   Deliverable 2: cnc_workcell_layout.png (PNG diagram of layout)\n   Deliverable 3: final_report.pdf (PDF summary report)\n   ```\n\n2. **Verify workspace is accessible:**\n   ```\n   run_shell\n     command: ls -la \u002Fworkspace\u002F && mkdir -p \u002Fworkspace\u002Fartifacts\n   ```\n\n3. **Set path variables for consistency:**\n   - All files go to `\u002Fworkspace\u002F` or `\u002Fworkspace\u002Fartifacts\u002F`\n   - Use absolute paths in all code\n   - Never use relative paths like `.\u002Foutput.xlsx`\n\n### Phase 1: Spreadsheet Generation (Budget: 8 iterations)\n\n**Step 1.1: Choose approach**\n\n| Method | Tool | Best For |\n|--------|------|----------|\n| Direct Python | `execute_code_sandbox` | Quick generation, simple tables |\n| Shell agent | `shell_agent` | Complex logic, error recovery |\n\n**Step 1.2: Create spreadsheet code**\n\n```python\nfrom openpyxl import Workbook\nfrom openpyxl.styles import Font, Alignment, Border, Side\n\ndef create_hardware_table():\n    wb = Workbook()\n    ws = wb.active\n    ws.title = \"Hardware Selection\"\n    \n    # Headers with styling\n    headers = [\"Component\", \"Option A\", \"Option B\", \"Option C\", \"Recommendation\"]\n    for col, header in enumerate(headers, 1):\n        cell = ws.cell(row=1, column=col, value=header)\n        cell.font = Font(bold=True)\n        cell.alignment = Alignment(horizontal='center')\n    \n    # Data rows\n    data = [\n        [\"Controller\", \"PLC-X100 ($500)\", \"PLC-Y200 ($650)\", \"PLC-Z300 ($800)\", \"PLC-Y200\"],\n        [\"Motor\", \"Servo-500W ($300)\", \"Servo-750W ($400)\", \"Stepper-1kW ($250)\", \"Servo-750W\"],\n        [\"Sensor\", \"Proximity-S1 ($50)\", \"Vision-V2 ($200)\", \"Laser-L3 ($150)\", \"Vision-V2\"]\n    ]\n    \n    for row_idx, row_data in enumerate(data, 2):\n        for col_idx, value in enumerate(row_data, 1):\n            ws.cell(row=row_idx, column=col_idx, value=value)\n    \n    # Auto-adjust column widths\n    for col in ws.columns:\n        max_length = max(len(str(cell.value)) for cell in col if cell.value)\n        ws.column_dimensions[col[0].column_letter].width = min(max_length + 2, 25)\n    \n    output_path = '\u002Fworkspace\u002Fhardware_selection_table.xlsx'\n    wb.save(output_path)\n    print(f'SUCCESS: Spreadsheet created at {output_path}')\n    print(f'ARTIFACT_PATH:{output_path}')\n    return output_path\n\ncreate_hardware_table()\n```\n\n**Step 1.3: Execute with verification**\n\n```\nexecute_code_sandbox\n  code: \u003Cspreadsheet code from Step 1.2>\n  language: python\n```\n\n**Step 1.4: Verify (REQUIRED before proceeding)**\n\n```\nrun_shell\n  command: ls -lh \u002Fworkspace\u002F*.xlsx && python3 -c \"import openpyxl; openpyxl.load_workbook('\u002Fworkspace\u002Fhardware_selection_table.xlsx')\"\n```\n\n**Checkpoint criteria:**\n- ✓ File exists\n- ✓ Size > 1KB\n- ✓ No errors opening file\n- ✗ If failed, retry once with shell_agent, then proceed to Phase 2 with note\n\n### Phase 2: Diagram Generation (Budget: 8 iterations)\n\n**Step 2.1: Choose diagram type and tool**\n\n| Diagram Type | Tool | Library |\n|--------------|------|---------|\n| Flowchart\u002FBlocks | `execute_code_sandbox` | matplotlib, graphviz |\n| Layout\u002FFloorplan | `shell_agent` | matplotlib, PIL |\n| Architecture | `execute_code_sandbox` | matplotlib, diagram |\n\n**Step 2.2: Create diagram code (matplotlib example)**\n\n```python\nimport matplotlib.pyplot as plt\nimport matplotlib.patches as patches\n\ndef create_layout_diagram():\n    fig, ax = plt.subplots(figsize=(12, 8))\n    ax.set_xlim(0, 100)\n    ax.set_ylim(0, 80)\n    ax.set_aspect('equal')\n    ax.set_title('CNC Workcell Layout', fontsize=16, pad=20)\n    \n    # Define workcell components\n    components = [\n        {'label': 'CNC Machine', 'xy': (30, 40), 'w': 25, 'h': 20, 'color': '#3498db'},\n        {'label': 'Robot Arm', 'xy': (60, 40), 'w': 15, 'h': 15, 'color': '#e74c3c'},\n        {'label': 'Material Rack', 'xy': (10, 20), 'w': 15, 'h': 40, 'color': '#2ecc71'},\n        {'label': 'Control Panel', 'xy': (75, 60), 'w': 12, 'h': 10, 'color': '#f39c12'},\n        {'label': 'Safety Zone', 'xy': (25, 35), 'w': 50, 'h': 30, 'color': 'none', 'edge': '#95a5a6', 'dashed': True}\n    ]\n    \n    for comp in components:\n        if comp.get('edge'):\n            rect = patches.Rectangle(\n                (comp['xy'][0], comp['xy'][1]), \n                comp['w'], comp['h'],\n                linewidth=2, \n                edgecolor=comp['edge'],\n                facecolor=comp['color'],\n                linestyle='--' if comp.get('dashed') else '-'\n            )\n        else:\n            rect = patches.Rectangle(\n                (comp['xy'][0], comp['xy'][1]), \n                comp['w'], comp['h'],\n                linewidth=2, \n                edgecolor='black',\n                facecolor=comp['color']\n            )\n        ax.add_patch(rect)\n        ax.text(\n            comp['xy'][0] + comp['w']\u002F2, \n            comp['xy'][1] + comp['h']\u002F2, \n            comp['label'],\n            ha='center', va='center', fontsize=10, fontweight='bold'\n        )\n    \n    plt.grid(True, alpha=0.3)\n    plt.xlabel('Distance (m)')\n    plt.ylabel('Distance (m)')\n    \n    output_path = '\u002Fworkspace\u002Fcnc_workcell_layout.png'\n    plt.savefig(output_path, dpi=150, bbox_inches='tight')\n    plt.close()\n    print(f'SUCCESS: Diagram created at {output_path}')\n    print(f'ARTIFACT_PATH:{output_path}')\n    return output_path\n\ncreate_layout_diagram()\n```\n\n**Step 2.3: Execute and verify**\n\n```\nexecute_code_sandbox\n  code: \u003Cdiagram code from Step 2.2>\n  language: python\n```\n\n**Verification:**\n```\nrun_shell\n  command: ls -lh \u002Fworkspace\u002F*.png && file \u002Fworkspace\u002F*.png\n```\n\n**Checkpoint criteria:**\n- ✓ File exists\n- ✓ Size > 1KB\n- ✓ File type confirmed as PNG\u002Fimage\n- ✗ If failed after 2 retries, use shell_agent fallback, then proceed\n\n### Phase 3: PDF Report Generation (Budget: 8 iterations)\n\n**Step 3.1: Prepare content aggregation**\n\nGather data from previous phases:\n- Spreadsheet: key findings, recommendations\n- Diagram: visual summary\n- Additional: scoring, conclusions\n\n**Step 3.2: Create PDF generation code**\n\n```python\nfrom reportlab.lib import colors\nfrom reportlab.lib.pagesizes import letter\nfrom reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, Table, TableStyle, Image\nfrom reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle\nfrom reportlab.lib.units import inch\nfrom reportlab.lib.enums import TA_CENTER, TA_LEFT\n\ndef create_final_report(output_path):\n    doc = SimpleDocTemplate(output_path, pagesize=letter,\n                           rightMargin=0.75*inch, leftMargin=0.75*inch,\n                           topMargin=0.75*inch, bottomMargin=0.75*inch)\n    styles = getSampleStyleSheet()\n    story = []\n    \n    # Custom styles\n    title_style = ParagraphStyle('CustomTitle', parent=styles['Heading1'],\n                                  fontSize=20, spaceAfter=30, alignment=TA_CENTER,\n                                  fontName='Helvetica-Bold')\n    heading_style = ParagraphStyle('CustomHeading', parent=styles['Heading2'],\n                                    fontSize=14, spaceAfter=12, spaceBefore=20,\n                                    fontName='Helvetica-Bold')\n    \n    # Title\n    story.append(Paragraph(\"CNC Workcell Implementation Report\", title_style))\n    story.append(Spacer(1, 0.5*inch))\n    \n    # Executive Summary\n    story.append(Paragraph(\"Executive Summary\", heading_style))\n    summary_text = \"\"\"\n    This report presents the hardware selection analysis and workcell layout \n    for the proposed CNC implementation. After evaluating multiple options across \n    controllers, motors, and sensors, recommended configurations balance cost, \n    performance, and reliability.\n    \"\"\"\n    story.append(Paragraph(summary_text, styles['Normal']))\n    story.append(Spacer(1, 0.3*inch))\n    \n    # Hardware Selection Table\n    story.append(Paragraph(\"Hardware Selection Summary\", heading_style))\n    data = [\n        ['Component', 'Recommended Option', 'Cost', 'Rationale'],\n        ['Controller', 'PLC-Y200', '$650', 'Best cost\u002Fperformance balance'],\n        ['Motor', 'Servo-750W', '$400', 'Adequate power with precision'],\n        ['Sensor', 'Vision-V2', '$200', 'Enables quality inspection']\n    ]\n    \n    table = Table(data, colWidths=[1.5*inch, 1.7*inch, 1*inch, 2.3*inch])\n    table.setStyle(TableStyle([\n        ('BACKGROUND', (0, 0), (-1, 0), colors '#2c3e50'),\n        ('TEXTCOLOR', (0, 0), (-1, 0), colors.whitesmoke),\n        ('ALIGN', (0, 0), (-1, -1), 'CENTER'),\n        ('FONTNAME', (0, 0), (-1, 0), 'Helvetica-Bold'),\n        ('FONTSIZE', (0, 0), (-1, 0), 11),\n        ('BOTTOMPADDING', (0, 0), (-1, 0), 12),\n        ('BACKGROUND', (0, 1), (-1, -1), colors.beige),\n        ('GRID', (0, 0), (-1, -1), 1, colors.black),\n        ('VALIGN', (0, 0), (-1, -1), 'MIDDLE')\n    ]))\n    story.append(table)\n    story.append(Spacer(1, 0.4*inch))\n    \n    # Layout Diagram Reference\n    story.append(Paragraph(\"Workcell Layout\", heading_style))\n    story.append(Paragraph(\"See attached diagram: cnc_workcell_layout.png\", styles['Normal']))\n    story.append(Spacer(1, 0.2*inch))\n    \n    # Recommendations\n    story.append(Paragraph(\"Implementation Recommendations\", heading_style))\n    rec_text = \"\"\"\n    1. Begin with controller installation and configuration\n    2. Integrate motor drives and verify motion control\n    3. Install and calibrate vision system\n    4. Conduct safety zone validation\n    5. Perform full system integration testing\n    \"\"\"\n    story.append(Paragraph(rec_text, styles['Normal']))\n    story.append(Spacer(1, 0.5*inch))\n    \n    # Footer\n    story.append(Spacer(1, 0.5*inch))\n    footer_style = ParagraphStyle('Footer', parent=styles['Normal'],\n                                   fontSize=9, alignment=TA_CENTER, textColor=colors.grey)\n    story.append(Paragraph(\"Generated by Unified Deliverables Workflow\", footer_style))\n    \n    doc.build(story)\n    print(f'SUCCESS: PDF report created at {output_path}')\n    print(f'ARTIFACT_PATH:{output_path}')\n    return output_path\n\ncreate_final_report('\u002Fworkspace\u002Ffinal_report.pdf')\n```\n\n**Step 3.3: Execute with explicit artifact path**\n\n```\nexecute_code_sandbox\n  code: \u003CPDF code from Step 3.2>\n  language: python\n```\n\n**Step 3.4: Final verification**\n\n```\nrun_shell\n  command: ls -lh \u002Fworkspace\u002F*.pdf && echo \"---\" && ls -lh \u002Fworkspace\u002F*.xlsx \u002Fworkspace\u002F*.png\n```\n\n**Checkpoint criteria:**\n- ✓ PDF file exists\n- ✓ Size > 10KB (reports should be substantial)\n- ✓ ARTIFACT_PATH was output\n- ✓ All three deliverables verified\n\n## Error Recovery & Fallback Strategies\n\n### When execute_code_sandbox fails repeatedly:\n\n**Strategy 1: Use shell_agent (more resilient)**\n```\nshell_agent\n  task: Create an Excel file at \u002Fworkspace\u002Fhardware_selection_table.xlsx with hardware comparison data including controllers, motors, and sensors with costs and recommendations\n```\n\n**Strategy 2: Simplify the code**\n- Remove complex styling\n- Use basic libraries only (csv instead of openpyxl if needed)\n- Reduce dependencies\n\n**Strategy 3: Change output format**\n- Excel → CSV if openpyxl fails\n- PNG → SVG if PIL\u002Fmatplotlib fails\n- PDF → Markdown + convert later\n\n### When iteration budget is running low:\n\n| Iterations Remaining | Action |\n|---------------------|--------|\n| \u003C 10 | Skip non-critical formatting, use minimal viable output |\n| \u003C 5 | Use simplest possible implementation, skip verification |\n| \u003C 3 | Output text summary with file paths, request manual generation |\n\n## Best Practices\n\n1. **Phase sequentially** - Complete and verify each phase before moving on\n2. **Use absolute paths** - Always `\u002Fworkspace\u002Ffilename.ext`, never relative\n3. **Output ARTIFACT_PATH** - Every successful generation must print this\n4. **Verify before proceeding** - Run shell check after each deliverable\n5. **Track iteration count** - Count tool calls, stop at 25 to leave buffer\n6. **Simplify on failure** - If complex code fails, strip to minimum viable\n7. **Document decisions** - Note why fallback was used for future reference\n\n## Quick Reference: Tool Selection\n\n| Task | Primary Tool | Fallback Tool |\n|------|--------------|---------------|\n| Spreadsheet | execute_code_sandbox (openpyxl) | shell_agent (pandas) |\n| Diagram | execute_code_sandbox (matplotlib) | shell_agent (graphviz) |\n| PDF Report | execute_code_sandbox (reportlab) | shell_agent (fpdf) |\n| Verification | run_shell (ls, file) | read_file (for content check) |\n\n## Complete Workflow Checklist\n\n- [ ] Phase 0: Defined all 3 deliverables with paths\n- [ ] Phase 0: Verified workspace accessibility\n- [ ] Phase 1: Spreadsheet created and verified (\u003C 8 iterations)\n- [ ] Phase 2: Diagram created and verified (\u003C 8 iterations)\n- [ ] Phase 3: PDF created and verified (\u003C 8 iterations)\n- [ ] All ARTIFACT_PATH outputs captured\n- [ ] Final verification: all files exist with appropriate sizes\n- [ ] Total iterations used ≤ 30\n\n## Troubleshooting\n\n| Problem | Immediate Action |\n|---------|-----------------|\n| execute_code_sandbox returns \"[ERROR] unknown error\" | Retry once, then switch to shell_agent |\n| File not found after execution | Check actual path with `run_shell: ls \u002Fworkspace\u002F` |\n| ARTIFACT_PATH not output | Re-run with explicit print statement |\n| Iteration budget nearly exhausted | Skip remaining deliverables, document what was created |\n| Library import fails | Add `!pip install \u003Clibrary>` at code start |\n\n## Related Tools\n\n- `execute_code_sandbox` - Primary tool for code execution (Python)\n- `shell_agent` - Fallback for complex tasks or when sandbox fails\n- `run_shell` - Verification and workspace inspection\n- `read_file` - Content verification (type: xlsx, png, pdf)\n- `create_file` - Alternative for text-based outputs\n",{"name":5,"description":7},"main","af1b40a42167d09c30b3a63000aa14ace4c1e229","gdpval_bench\u002Fskills\u002Fpdf-checklist-workflow-enhanced","https:\u002F\u002Fgithub.com\u002Fxyliu-cs\u002FOpenSpace-GDPval","https:\u002F\u002Fgithub.com\u002Fxyliu-cs","https:\u002F\u002Fxyliu-cs.github.io","PhD Student in CS, CUHK-Shenzhen.","2026-04-06 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