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Designed for resilience with explicit iteration budgeting and workspace management.\n\n## Overview\n\nUse this workflow when you need to:\n- Generate multiple interconnected deliverables in a single task\n- Create data spreadsheets with structured tables\n- Produce visual diagrams (PNG\u002FSVG) for layouts or workflows\n- Generate summary PDF reports with scoring or assessments\n- Manage iteration budgets across multiple components\n- Handle sandbox execution failures gracefully\n\n## Critical: Iteration Budget Allocation\n\n**Total budget must be divided across deliverables:**\n\n| Deliverable | Recommended Budget | Purpose |\n|-------------|-------------------|---------|\n| Spreadsheet | 8-10 iterations | Data gathering, table creation, validation |\n| Diagram | 8-10 iterations | Visual generation, layout refinement |\n| PDF Report | 8-10 iterations | Report assembly, formatting, final output |\n| Buffer | 2-4 iterations | Error recovery, verification, fixes |\n\n**Never spend entire budget on one deliverable.** Track iterations explicitly.\n\n## Step-by-Step Instructions\n\n### Phase 0: Workspace Preparation (1 iteration)\n\nBefore generating any deliverables, establish clean workspace state:\n\n```bash\n# Check current workspace state\nls -la \u002Fworkspace\u002F\n\n# Create dedicated output directory\nmkdir -p \u002Fworkspace\u002Fdeliverables\n\n# Verify write permissions\ntouch \u002Fworkspace\u002Fdeliverables\u002Ftest.tmp && rm \u002Fworkspace\u002Fdeliverables\u002Ftest.tmp\n```\n\n**Why:** Prevents workspace path confusion that caused previous failures.\n\n### Phase 1: Spreadsheet Creation (8-10 iterations max)\n\n#### Step 1.1: Choose Approach\n\n| Mode | Tool | Use When |\n|------|------|----------|\n| A | `execute_code_sandbox` with `openpyxl`\u002F`pandas` | Programmatic table generation |\n| B | `shell_agent` with Python script | Complex data processing |\n| C | `create_file` (CSV\u002FXLSX) | Simple tabular data |\n\n#### Step 1.2: Generate Spreadsheet Code\n\n**Example using openpyxl:**\n\n```python\nfrom openpyxl import Workbook\nfrom openpyxl.styles import Font, PatternFill, Alignment\n\nwb = Workbook()\nws = wb.active\nws.title = \"Hardware Selection\"\n\n# Headers with styling\nheaders = [\"Component\", \"Model\", \"Qty\", \"Unit Price\", \"Total\"]\nfor col, header in enumerate(headers, 1):\n    cell = ws.cell(row=1, column=col, value=header)\n    cell.font = Font(bold=True)\n    cell.fill = PatternFill(start_color=\"4472C4\", fill_type=\"solid\")\n    cell.font = Font(color=\"FFFFFF\", bold=True)\n\n# Data rows\ndata = [\n    [\"CNC Controller\", \"Fanuc 0i-MF\", 1, 2500, 2500],\n    [\"Servo Motor\", \"SGM7G-09A\", 4, 450, 1800],\n    [\"HMI Panel\", \"GT2110-WTBD\", 1, 380, 380]\n]\n\nfor 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# Total row\nws.cell(row=len(data)+2, column=4, value=\"TOTAL:\")\nws.cell(row=len(data)+2, column=5, value=f\"=E2:E{len(data)+1}\")\n\n# Save\noutput_path = '\u002Fworkspace\u002Fdeliverables\u002Fhardware_selection_table.xlsx'\nwb.save(output_path)\nprint(f'ARTIFACT_PATH:{output_path}')\nprint('Spreadsheet created successfully')\n```\n\n#### Step 1.3: Execute and Verify\n\n```\nexecute_code_sandbox\n  code: \u003Cspreadsheet generation code>\n  language: python\n```\n\n**Verification (use 1 iteration):**\n```bash\nrun_shell\n  command: ls -lh \u002Fworkspace\u002Fdeliverables\u002F*.xlsx && file \u002Fworkspace\u002Fdeliverables\u002F*.xlsx\n```\n\n**If execute_code_sandbox fails with '[ERROR] unknown error':**\n1. Retry once with `shell_agent` instead\n2. If still failing, fall back to `create_file` with CSV format\n3. Document the failure and proceed to next deliverable\n\n**Iteration checkpoint:** After 8 iterations on spreadsheet, move to diagram regardless of completion status.\n\n### Phase 2: Diagram Generation (8-10 iterations max)\n\n#### Step 2.1: Choose Diagram Type\n\n| Type | Tool | Best For |\n|------|------|----------|\n| Flowchart | `graphviz` + `pydot` | Process flows, decision trees |\n| Layout | `matplotlib` + `patches` | Physical layouts, workcells |\n| Architecture | `diagrams` library | System architecture |\n| Simple shapes | `PIL\u002FPillow` | Basic diagrams |\n\n#### Step 2.2: Generate Diagram Code\n\n**Example using matplotlib for layout diagram:**\n\n```python\nimport matplotlib.pyplot as plt\nimport matplotlib.patches as patches\n\nfig, ax = plt.subplots(figsize=(12, 8))\nax.set_xlim(0, 100)\nax.set_ylim(0, 80)\nax.set_aspect('equal')\nax.axis('off')\n\n# Title\nax.text(50, 75, 'CNC Workcell Layout', fontsize=16, ha='center', \n        fontweight='bold', bbox=dict(boxstyle='round', facecolor='wheat'))\n\n# CNC Machine\ncnc = patches.Rectangle((10, 30), 25, 20, linewidth=2, \n                        edgecolor='darkblue', facecolor='lightblue',\n                        label='CNC Machine')\nax.add_patch(cnc)\nax.text(22.5, 40, 'CNC\\nMachine', ha='center', va='center', fontsize=10)\n\n# Robot Arm\nrobot = patches.Circle((50, 40), 8, linewidth=2,\n                       edgecolor='darkgreen', facecolor='lightgreen',\n                       label='Robot')\nax.add_patch(robot)\nax.text(50, 40, 'Robot', ha='center', va='center', fontsize=10)\n\n# Material Storage\nstorage = patches.Rectangle((70, 30), 20, 20, linewidth=2,\n                           edgecolor='darkred', facecolor='lightcoral',\n                           label='Storage')\nax.add_patch(storage)\nax.text(80, 40, 'Material\\nStorage', ha='center', va='center', fontsize=9)\n\n# Arrows showing flow\nax.annotate('', xy=(35, 40), xytext=(42, 40),\n           arrowprops=dict(arrowstyle='->', color='gray', lw=2))\nax.annotate('', xy=(58, 40), xytext=(65, 40),\n           arrowprops=dict(arrowstyle='->', color='gray', lw=2))\n\n# Legend\nax.legend(loc='upper right', bbox_to_anchor=(0.98, 0.98))\n\n# Save\noutput_path = '\u002Fworkspace\u002Fdeliverables\u002Fcnc_workcell_layout.png'\nplt.savefig(output_path, dpi=150, bbox_inches='tight')\nprint(f'ARTIFACT_PATH:{output_path}')\nprint('Diagram created successfully')\n```\n\n#### Step 2.3: Execute and Verify\n\n```\nexecute_code_sandbox\n  code: \u003Cdiagram generation code>\n  language: python\n```\n\n**Verification:**\n```bash\nrun_shell\n  command: ls -lh \u002Fworkspace\u002Fdeliverables\u002F*.png && file \u002Fworkspace\u002Fdeliverables\u002F*.png\n```\n\n**If execute_code_sandbox fails:**\n1. First retry: Simplify the diagram (remove complex elements)\n2. Second retry: Use `shell_agent` with explicit matplotlib installation\n3. Third retry: Create ASCII\u002Ftext-based diagram as fallback\n4. Document and proceed (diagram is often optional compared to PDF)\n\n**Iteration checkpoint:** After 8 iterations on diagram, move to PDF regardless of completion status.\n\n### Phase 3: PDF Report Generation (8-10 iterations max)\n\n#### Step 3.1: Choose PDF Library\n\n| Library | Best For | Installation |\n|---------|----------|--------------|\n| `fpdf2` | Simple reports, quick setup | `!pip install fpdf2` |\n| `reportlab` | Professional reports, tables | `!pip install reportlab` |\n| `matplotlib` | Chart-heavy reports | Built-in |\n\n#### Step 3.2: Generate PDF Code\n\n**Example using fpdf2 (simplest, most reliable):**\n\n```python\nfrom fpdf import FPDF\n\nclass ReportPDF(FPDF):\n    def header(self):\n        self.set_font('Arial', 'B', 14)\n        self.cell(0, 10, 'Project Assessment Report', 0, 1, 'C')\n        self.line(10, 20, 200, 20)\n        self.ln(10)\n    \n    def footer(self):\n        self.set_y(-15)\n        self.set_font('Arial', 'I', 8)\n        self.cell(0, 10, f'Page {self.page_no()}', 0, 0, 'C')\n    \n    def section(self, title):\n        self.set_font('Arial', 'B', 12)\n        self.set_fill_color(200, 220, 255)\n        self.cell(0, 8, title, 0, 1, 'L', 1)\n        self.ln(3)\n    \n    def add_table_row(self, col1, col2, col3):\n        self.set_font('Arial', '', 10)\n        self.cell(60, 8, col1, 1)\n        self.cell(80, 8, col2, 1)\n        self.cell(40, 8, col3, 1)\n        self.ln()\n\npdf = ReportPDF()\npdf.add_page()\npdf.set_auto_page_break(auto=True, margin=15)\n\n# Executive Summary\npdf.section('Executive Summary')\npdf.set_font('Arial', '', 11)\npdf.multi_cell(0, 7, 'This report provides a comprehensive assessment of the CNC workcell implementation project, including hardware selection, layout design, and cost analysis.')\npdf.ln(5)\n\n# Hardware Selection Summary\npdf.section('Hardware Selection')\npdf.add_table_row('Component', 'Model', 'Cost')\npdf.add_table_row('CNC Controller', 'Fanuc 0i-MF', '$2,500')\npdf.add_table_row('Servo Motors', 'SGM7G-09A (x4)', '$1,800')\npdf.add_table_row('HMI Panel', 'GT2110-WTBD', '$380')\npdf.ln(5)\n\n# Assessment Scores\npdf.section('Assessment Scores')\npdf.add_table_row('Criteria', 'Description', 'Score')\npdf.add_table_row('Completeness', 'All requirements addressed', '8\u002F10')\npdf.add_table_row('Feasibility', 'Technical implementation possible', '9\u002F10')\npdf.add_table_row('Cost Efficiency', 'Within budget constraints', '7\u002F10')\npdf.ln(5)\n\n# Conclusion\npdf.section('Conclusion')\npdf.multi_cell(0, 7, 'The proposed CNC workcell meets all critical requirements with a recommended implementation approach. Total estimated cost: $4,680.')\n\n# Save\noutput_path = '\u002Fworkspace\u002Fdeliverables\u002Fassessment_report.pdf'\npdf.output(output_path)\nprint(f'ARTIFACT_PATH:{output_path}')\nprint('PDF report created successfully')\n```\n\n#### Step 3.3: Execute and Verify\n\n```\nexecute_code_sandbox\n  code: \u003CPDF generation code>\n  language: python\n```\n\n**Verification (critical - use read_file):**\n```\nread_file\n  filetype: pdf\n  file_path: \u002Fworkspace\u002Fdeliverables\u002Fassessment_report.pdf\n```\n\n**Alternative verification:**\n```bash\nrun_shell\n  command: ls -lh \u002Fworkspace\u002Fdeliverables\u002F*.pdf && pdftk \u002Fworkspace\u002Fdeliverables\u002F*.pdf dump_data 2>\u002Fdev\u002Fnull | head -20\n```\n\n### Phase 4: Final Bundle Verification (2-4 iterations)\n\nVerify all deliverables exist and are valid:\n\n```bash\nrun_shell\n  command: |\n    echo \"=== Deliverable Bundle Verification ===\"\n    echo \"\"\n    echo \"Spreadsheet:\"\n    ls -lh \u002Fworkspace\u002Fdeliverables\u002F*.xlsx 2>\u002Fdev\u002Fnull || echo \"  NOT FOUND\"\n    echo \"\"\n    echo \"Diagram:\"\n    ls -lh \u002Fworkspace\u002Fdeliverables\u002F*.png 2>\u002Fdev\u002Fnull || echo \"  NOT FOUND\"\n    echo \"\"\n    echo \"PDF Report:\"\n    ls -lh \u002Fworkspace\u002Fdeliverables\u002F*.pdf 2>\u002Fdev\u002Fnull || echo \"  NOT FOUND\"\n    echo \"\"\n    echo \"=== Bundle Complete ===\"\n```\n\n**Checklist:**\n- [ ] At least 2 of 3 deliverables created\n- [ ] All files > 1KB (not empty)\n- [ ] ARTIFACT_PATH outputs visible in execution logs\n- [ ] No unresolved execute_code_sandbox errors\n\n## Error Handling Matrix\n\n| Error Type | Detection | Recovery Action | Max Retries |\n|------------|-----------|-----------------|-------------|\n| `[ERROR] unknown error` (execute_code_sandbox) | Error in tool output | Switch to `shell_agent` or simplify code | 2 |\n| File not found | Verification step fails | Check path, re-run generation | 1 |\n| Library not installed | ImportError in output | Add `!pip install` at code start | 1 |\n| Empty file (0 bytes) | `ls -lh` shows 0 size | Regenerate with error handling | 1 |\n| Iteration budget exceeded | Iteration count reached | Document partial completion, proceed | N\u002FA |\n\n## Workspace Path Convention\n\n**Always use:** `\u002Fworkspace\u002Fdeliverables\u002Ffilename.extension`\n\n**Never use:**\n- `\u002Fworkspace\u002Ffilename.extension` (root clutter)\n- `.\u002Ffilename.extension` (ambiguous)\n- `filename.extension` (missing path)\n\n## Template: Quick Start All Three Deliverables\n\n**Use this template structure to generate all three deliverables efficiently:**\n\n```python\n# DELIVERABLE 1: Spreadsheet\nimport openpyxl\nwb = openpyxl.Workbook()\nws = wb.active\nws['A1'] = 'Header'\nwb.save('\u002Fworkspace\u002Fdeliverables\u002Fdata.xlsx')\nprint('ARTIFACT_PATH:\u002Fworkspace\u002Fdeliverables\u002Fdata.xlsx')\n\n# DELIVERABLE 2: Diagram  \nimport matplotlib.pyplot as plt\nfig, ax = plt.subplots()\nax.text(0.5, 0.5, 'Diagram')\nplt.savefig('\u002Fworkspace\u002Fdeliverables\u002Fdiagram.png')\nprint('ARTIFACT_PATH:\u002Fworkspace\u002Fdeliverables\u002Fdiagram.png')\n\n# DELIVERABLE 3: PDF\nfrom fpdf import FPDF\npdf = FPDF()\npdf.add_page()\npdf.set_font('Arial', '', 12)\npdf.cell(0, 10, 'Report')\npdf.output('\u002Fworkspace\u002Fdeliverables\u002Freport.pdf')\nprint('ARTIFACT_PATH:\u002Fworkspace\u002Fdeliverables\u002Freport.pdf')\n```\n\n## Iteration Tracking Template\n\nTrack your iteration usage explicitly:\n\n```\nIteration Log:\n- Iteration 1-2: Workspace preparation\n- Iteration 3-10: Spreadsheet creation (8 used)\n- Iteration 11-18: Diagram generation (8 used)\n- Iteration 19-26: PDF report (8 used)\n- Iteration 27-30: Bundle verification (4 buffer)\nTotal: 30 iterations\n```\n\n## Best Practices\n\n1. **Budget discipline** - Never exceed 10 iterations on any single deliverable\n2. **Early verification** - Verify each deliverable before moving to next phase\n3. **Graceful degradation** - If one deliverable fails, complete the others\n4. **Consistent paths** - Always use `\u002Fworkspace\u002Fdeliverables\u002F` prefix\n5. **ARTIFACT_PATH output** - Essential for download capability\n6. **Error logging** - Document failures and recovery actions taken\n7. **Fallback strategies** - Have alternative approaches ready for each deliverable type\n\n## Related Tools\n\n- `execute_code_sandbox` - Primary tool for all code generation\n- `shell_agent` - Fallback when execute_code_sandbox fails repeatedly\n- `read_file` - Verify PDF content (filetype: pdf, xlsx, png)\n- `run_shell` - Check file existence, sizes, and workspace state\n- `create_file` - Fallback for simple data files\n- `list_dir` - Verify deliverables directory contents\n\n## Anti-Patterns to Avoid\n\n1. **Don't** spend all iterations on one deliverable\n2. **Don't** ignore execute_code_sandbox errors - address immediately\n3. **Don't** use inconsistent paths across deliverables\n4. **Don't** skip verification steps\n5. **Don't** assume a deliverable succeeded without checking\n\n## Success Criteria\n\nA successful execution produces:\n- Minimum 2 of 3 deliverables (spreadsheet, diagram, PDF)\n- All deliverables in `\u002Fworkspace\u002Fdeliverables\u002F`\n- Valid, non-empty files (>1KB each)\n- Clear ARTIFACT_PATH outputs in execution logs\n- Iteration budget not exceeded\n\n*** End Files\n","# Integrated Report Bundle Workflow\n\nThis skill provides a reusable pattern for creating a complete report package consisting of three interconnected deliverables: a spreadsheet (data table), a diagram (visual layout), and a PDF report (summary document). Designed for resilience with explicit iteration budgeting and workspace management.\n\n## Overview\n\nUse this workflow when you need to:\n- Generate multiple interconnected deliverables in a single task\n- Create data spreadsheets with structured tables\n- Produce visual diagrams (PNG\u002FSVG) for layouts or workflows\n- Generate summary PDF reports with scoring or assessments\n- Manage iteration budgets across multiple components\n- Handle sandbox execution failures gracefully\n\n## Critical: Iteration Budget Allocation\n\n**Total budget must be divided across deliverables:**\n\n| Deliverable | Recommended Budget | Purpose |\n|-------------|-------------------|---------|\n| Spreadsheet | 8-10 iterations | Data gathering, table creation, validation |\n| Diagram | 8-10 iterations | Visual generation, layout refinement |\n| PDF Report | 8-10 iterations | Report assembly, formatting, final output |\n| Buffer | 2-4 iterations | Error recovery, verification, fixes |\n\n**Never spend entire budget on one deliverable.** Track iterations explicitly.\n\n## Step-by-Step Instructions\n\n### Phase 0: Workspace Preparation (1 iteration)\n\nBefore generating any deliverables, establish clean workspace state:\n\n```bash\n# Check current workspace state\nls -la \u002Fworkspace\u002F\n\n# Create dedicated output directory\nmkdir -p \u002Fworkspace\u002Fdeliverables\n\n# Verify write permissions\ntouch \u002Fworkspace\u002Fdeliverables\u002Ftest.tmp && rm \u002Fworkspace\u002Fdeliverables\u002Ftest.tmp\n```\n\n**Why:** Prevents workspace path confusion that caused previous failures.\n\n### Phase 1: Spreadsheet Creation (8-10 iterations max)\n\n#### Step 1.1: Choose Approach\n\n| Mode | Tool | Use When |\n|------|------|----------|\n| A | `execute_code_sandbox` with `openpyxl`\u002F`pandas` | Programmatic table generation |\n| B | `shell_agent` with Python script | Complex data processing |\n| C | `create_file` (CSV\u002FXLSX) | Simple tabular data |\n\n#### Step 1.2: Generate Spreadsheet Code\n\n**Example using openpyxl:**\n\n```python\nfrom openpyxl import Workbook\nfrom openpyxl.styles import Font, PatternFill, Alignment\n\nwb = Workbook()\nws = wb.active\nws.title = \"Hardware Selection\"\n\n# Headers with styling\nheaders = [\"Component\", \"Model\", \"Qty\", \"Unit Price\", \"Total\"]\nfor col, header in enumerate(headers, 1):\n    cell = ws.cell(row=1, column=col, value=header)\n    cell.font = Font(bold=True)\n    cell.fill = PatternFill(start_color=\"4472C4\", fill_type=\"solid\")\n    cell.font = Font(color=\"FFFFFF\", bold=True)\n\n# Data rows\ndata = [\n    [\"CNC Controller\", \"Fanuc 0i-MF\", 1, 2500, 2500],\n    [\"Servo Motor\", \"SGM7G-09A\", 4, 450, 1800],\n    [\"HMI Panel\", \"GT2110-WTBD\", 1, 380, 380]\n]\n\nfor 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# Total row\nws.cell(row=len(data)+2, column=4, value=\"TOTAL:\")\nws.cell(row=len(data)+2, column=5, value=f\"=E2:E{len(data)+1}\")\n\n# Save\noutput_path = '\u002Fworkspace\u002Fdeliverables\u002Fhardware_selection_table.xlsx'\nwb.save(output_path)\nprint(f'ARTIFACT_PATH:{output_path}')\nprint('Spreadsheet created successfully')\n```\n\n#### Step 1.3: Execute and Verify\n\n```\nexecute_code_sandbox\n  code: \u003Cspreadsheet generation code>\n  language: python\n```\n\n**Verification (use 1 iteration):**\n```bash\nrun_shell\n  command: ls -lh \u002Fworkspace\u002Fdeliverables\u002F*.xlsx && file \u002Fworkspace\u002Fdeliverables\u002F*.xlsx\n```\n\n**If execute_code_sandbox fails with '[ERROR] unknown error':**\n1. Retry once with `shell_agent` instead\n2. If still failing, fall back to `create_file` with CSV format\n3. Document the failure and proceed to next deliverable\n\n**Iteration checkpoint:** After 8 iterations on spreadsheet, move to diagram regardless of completion status.\n\n### Phase 2: Diagram Generation (8-10 iterations max)\n\n#### Step 2.1: Choose Diagram Type\n\n| Type | Tool | Best For |\n|------|------|----------|\n| Flowchart | `graphviz` + `pydot` | Process flows, decision trees |\n| Layout | `matplotlib` + `patches` | Physical layouts, workcells |\n| Architecture | `diagrams` library | System architecture |\n| Simple shapes | `PIL\u002FPillow` | Basic diagrams |\n\n#### Step 2.2: Generate Diagram Code\n\n**Example using matplotlib for layout diagram:**\n\n```python\nimport matplotlib.pyplot as plt\nimport matplotlib.patches as patches\n\nfig, ax = plt.subplots(figsize=(12, 8))\nax.set_xlim(0, 100)\nax.set_ylim(0, 80)\nax.set_aspect('equal')\nax.axis('off')\n\n# Title\nax.text(50, 75, 'CNC Workcell Layout', fontsize=16, ha='center', \n        fontweight='bold', bbox=dict(boxstyle='round', facecolor='wheat'))\n\n# CNC Machine\ncnc = patches.Rectangle((10, 30), 25, 20, linewidth=2, \n                        edgecolor='darkblue', facecolor='lightblue',\n                        label='CNC Machine')\nax.add_patch(cnc)\nax.text(22.5, 40, 'CNC\\nMachine', ha='center', va='center', fontsize=10)\n\n# Robot Arm\nrobot = patches.Circle((50, 40), 8, linewidth=2,\n                       edgecolor='darkgreen', facecolor='lightgreen',\n                       label='Robot')\nax.add_patch(robot)\nax.text(50, 40, 'Robot', ha='center', va='center', fontsize=10)\n\n# Material Storage\nstorage = patches.Rectangle((70, 30), 20, 20, linewidth=2,\n                           edgecolor='darkred', facecolor='lightcoral',\n                           label='Storage')\nax.add_patch(storage)\nax.text(80, 40, 'Material\\nStorage', ha='center', va='center', fontsize=9)\n\n# Arrows showing flow\nax.annotate('', xy=(35, 40), xytext=(42, 40),\n           arrowprops=dict(arrowstyle='->', color='gray', lw=2))\nax.annotate('', xy=(58, 40), xytext=(65, 40),\n           arrowprops=dict(arrowstyle='->', color='gray', lw=2))\n\n# Legend\nax.legend(loc='upper right', bbox_to_anchor=(0.98, 0.98))\n\n# Save\noutput_path = '\u002Fworkspace\u002Fdeliverables\u002Fcnc_workcell_layout.png'\nplt.savefig(output_path, dpi=150, bbox_inches='tight')\nprint(f'ARTIFACT_PATH:{output_path}')\nprint('Diagram created successfully')\n```\n\n#### Step 2.3: Execute and Verify\n\n```\nexecute_code_sandbox\n  code: \u003Cdiagram generation code>\n  language: python\n```\n\n**Verification:**\n```bash\nrun_shell\n  command: ls -lh \u002Fworkspace\u002Fdeliverables\u002F*.png && file \u002Fworkspace\u002Fdeliverables\u002F*.png\n```\n\n**If execute_code_sandbox fails:**\n1. First retry: Simplify the diagram (remove complex elements)\n2. Second retry: Use `shell_agent` with explicit matplotlib installation\n3. Third retry: Create ASCII\u002Ftext-based diagram as fallback\n4. Document and proceed (diagram is often optional compared to PDF)\n\n**Iteration checkpoint:** After 8 iterations on diagram, move to PDF regardless of completion status.\n\n### Phase 3: PDF Report Generation (8-10 iterations max)\n\n#### Step 3.1: Choose PDF Library\n\n| Library | Best For | Installation |\n|---------|----------|--------------|\n| `fpdf2` | Simple reports, quick setup | `!pip install fpdf2` |\n| `reportlab` | Professional reports, tables | `!pip install reportlab` |\n| `matplotlib` | Chart-heavy reports | Built-in |\n\n#### Step 3.2: Generate PDF Code\n\n**Example using fpdf2 (simplest, most reliable):**\n\n```python\nfrom fpdf import FPDF\n\nclass ReportPDF(FPDF):\n    def header(self):\n        self.set_font('Arial', 'B', 14)\n        self.cell(0, 10, 'Project Assessment Report', 0, 1, 'C')\n        self.line(10, 20, 200, 20)\n        self.ln(10)\n    \n    def footer(self):\n        self.set_y(-15)\n        self.set_font('Arial', 'I', 8)\n        self.cell(0, 10, f'Page {self.page_no()}', 0, 0, 'C')\n    \n    def section(self, title):\n        self.set_font('Arial', 'B', 12)\n        self.set_fill_color(200, 220, 255)\n        self.cell(0, 8, title, 0, 1, 'L', 1)\n        self.ln(3)\n    \n    def add_table_row(self, col1, col2, col3):\n        self.set_font('Arial', '', 10)\n        self.cell(60, 8, col1, 1)\n        self.cell(80, 8, col2, 1)\n        self.cell(40, 8, col3, 1)\n        self.ln()\n\npdf = ReportPDF()\npdf.add_page()\npdf.set_auto_page_break(auto=True, margin=15)\n\n# Executive Summary\npdf.section('Executive Summary')\npdf.set_font('Arial', '', 11)\npdf.multi_cell(0, 7, 'This report provides a comprehensive assessment of the CNC workcell implementation project, including hardware selection, layout design, and cost analysis.')\npdf.ln(5)\n\n# Hardware Selection Summary\npdf.section('Hardware Selection')\npdf.add_table_row('Component', 'Model', 'Cost')\npdf.add_table_row('CNC Controller', 'Fanuc 0i-MF', '$2,500')\npdf.add_table_row('Servo Motors', 'SGM7G-09A (x4)', '$1,800')\npdf.add_table_row('HMI Panel', 'GT2110-WTBD', '$380')\npdf.ln(5)\n\n# Assessment Scores\npdf.section('Assessment Scores')\npdf.add_table_row('Criteria', 'Description', 'Score')\npdf.add_table_row('Completeness', 'All requirements addressed', '8\u002F10')\npdf.add_table_row('Feasibility', 'Technical implementation possible', '9\u002F10')\npdf.add_table_row('Cost Efficiency', 'Within budget constraints', '7\u002F10')\npdf.ln(5)\n\n# Conclusion\npdf.section('Conclusion')\npdf.multi_cell(0, 7, 'The proposed CNC workcell meets all critical requirements with a recommended implementation approach. Total estimated cost: $4,680.')\n\n# Save\noutput_path = '\u002Fworkspace\u002Fdeliverables\u002Fassessment_report.pdf'\npdf.output(output_path)\nprint(f'ARTIFACT_PATH:{output_path}')\nprint('PDF report created successfully')\n```\n\n#### Step 3.3: Execute and Verify\n\n```\nexecute_code_sandbox\n  code: \u003CPDF generation code>\n  language: python\n```\n\n**Verification (critical - use read_file):**\n```\nread_file\n  filetype: pdf\n  file_path: \u002Fworkspace\u002Fdeliverables\u002Fassessment_report.pdf\n```\n\n**Alternative verification:**\n```bash\nrun_shell\n  command: ls -lh \u002Fworkspace\u002Fdeliverables\u002F*.pdf && pdftk \u002Fworkspace\u002Fdeliverables\u002F*.pdf dump_data 2>\u002Fdev\u002Fnull | head -20\n```\n\n### Phase 4: Final Bundle Verification (2-4 iterations)\n\nVerify all deliverables exist and are valid:\n\n```bash\nrun_shell\n  command: |\n    echo \"=== Deliverable Bundle Verification ===\"\n    echo \"\"\n    echo \"Spreadsheet:\"\n    ls -lh \u002Fworkspace\u002Fdeliverables\u002F*.xlsx 2>\u002Fdev\u002Fnull || echo \"  NOT FOUND\"\n    echo \"\"\n    echo \"Diagram:\"\n    ls -lh \u002Fworkspace\u002Fdeliverables\u002F*.png 2>\u002Fdev\u002Fnull || echo \"  NOT FOUND\"\n    echo \"\"\n    echo \"PDF Report:\"\n    ls -lh \u002Fworkspace\u002Fdeliverables\u002F*.pdf 2>\u002Fdev\u002Fnull || echo \"  NOT FOUND\"\n    echo \"\"\n    echo \"=== Bundle Complete ===\"\n```\n\n**Checklist:**\n- [ ] At least 2 of 3 deliverables created\n- [ ] All files > 1KB (not empty)\n- [ ] ARTIFACT_PATH outputs visible in execution logs\n- [ ] No unresolved execute_code_sandbox errors\n\n## Error Handling Matrix\n\n| Error Type | Detection | Recovery Action | Max Retries |\n|------------|-----------|-----------------|-------------|\n| `[ERROR] unknown error` (execute_code_sandbox) | Error in tool output | Switch to `shell_agent` or simplify code | 2 |\n| File not found | Verification step fails | Check path, re-run generation | 1 |\n| Library not installed | ImportError in output | Add `!pip install` at code start | 1 |\n| Empty file (0 bytes) | `ls -lh` shows 0 size | Regenerate with error handling | 1 |\n| Iteration budget exceeded | Iteration count reached | Document partial completion, proceed | N\u002FA |\n\n## Workspace Path Convention\n\n**Always use:** `\u002Fworkspace\u002Fdeliverables\u002Ffilename.extension`\n\n**Never use:**\n- `\u002Fworkspace\u002Ffilename.extension` (root clutter)\n- `.\u002Ffilename.extension` (ambiguous)\n- `filename.extension` (missing path)\n\n## Template: Quick Start All Three Deliverables\n\n**Use this template structure to generate all three deliverables efficiently:**\n\n```python\n# DELIVERABLE 1: Spreadsheet\nimport openpyxl\nwb = openpyxl.Workbook()\nws = wb.active\nws['A1'] = 'Header'\nwb.save('\u002Fworkspace\u002Fdeliverables\u002Fdata.xlsx')\nprint('ARTIFACT_PATH:\u002Fworkspace\u002Fdeliverables\u002Fdata.xlsx')\n\n# DELIVERABLE 2: Diagram  \nimport matplotlib.pyplot as plt\nfig, ax = plt.subplots()\nax.text(0.5, 0.5, 'Diagram')\nplt.savefig('\u002Fworkspace\u002Fdeliverables\u002Fdiagram.png')\nprint('ARTIFACT_PATH:\u002Fworkspace\u002Fdeliverables\u002Fdiagram.png')\n\n# DELIVERABLE 3: PDF\nfrom fpdf import FPDF\npdf = FPDF()\npdf.add_page()\npdf.set_font('Arial', '', 12)\npdf.cell(0, 10, 'Report')\npdf.output('\u002Fworkspace\u002Fdeliverables\u002Freport.pdf')\nprint('ARTIFACT_PATH:\u002Fworkspace\u002Fdeliverables\u002Freport.pdf')\n```\n\n## Iteration Tracking Template\n\nTrack your iteration usage explicitly:\n\n```\nIteration Log:\n- Iteration 1-2: Workspace preparation\n- Iteration 3-10: Spreadsheet creation (8 used)\n- Iteration 11-18: Diagram generation (8 used)\n- Iteration 19-26: PDF report (8 used)\n- Iteration 27-30: Bundle verification (4 buffer)\nTotal: 30 iterations\n```\n\n## Best Practices\n\n1. **Budget discipline** - Never exceed 10 iterations on any single deliverable\n2. **Early verification** - Verify each deliverable before moving to next phase\n3. **Graceful degradation** - If one deliverable fails, complete the others\n4. **Consistent paths** - Always use `\u002Fworkspace\u002Fdeliverables\u002F` prefix\n5. **ARTIFACT_PATH output** - Essential for download capability\n6. **Error logging** - Document failures and recovery actions taken\n7. **Fallback strategies** - Have alternative approaches ready for each deliverable type\n\n## Related Tools\n\n- `execute_code_sandbox` - Primary tool for all code generation\n- `shell_agent` - Fallback when execute_code_sandbox fails repeatedly\n- `read_file` - Verify PDF content (filetype: pdf, xlsx, png)\n- `run_shell` - Check file existence, sizes, and workspace state\n- `create_file` - Fallback for simple data files\n- `list_dir` - Verify deliverables directory contents\n\n## Anti-Patterns to Avoid\n\n1. **Don't** spend all iterations on one deliverable\n2. **Don't** ignore execute_code_sandbox errors - address immediately\n3. **Don't** use inconsistent paths across deliverables\n4. **Don't** skip verification steps\n5. **Don't** assume a deliverable succeeded without checking\n\n## Success Criteria\n\nA successful execution produces:\n- Minimum 2 of 3 deliverables (spreadsheet, diagram, PDF)\n- All deliverables in `\u002Fworkspace\u002Fdeliverables\u002F`\n- Valid, non-empty files (>1KB each)\n- Clear ARTIFACT_PATH outputs in execution logs\n- Iteration budget not exceeded\n\n*** End Files\n",{"name":5,"description":7},"main","af1b40a42167d09c30b3a63000aa14ace4c1e229","gdpval_bench\u002Fskills\u002Fpdf-checklist-workflow-enhanced-a53b26","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 20:32:15",{"source":8,"skillName":5,"commands":60,"prompt":70,"zipAvailable":71},[61,64,67],{"tool":62,"command":63},"npx","npx skills add xyliu-cs\u002FOpenSpace-GDPval --skill 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