Validates recently written code against project-specific development guidelines from .trellis/spec/. Identifies changed files via git diff, discovers applicable spec modules, runs lint and typecheck, and reports guideline violations. Use when code is written and needs quality verification, to catch context drift during long sessions, or before committing changes.
Pre-commit quality checklist covering lint, typecheck, tests, code-spec sync, API changes, database migrations, cross-layer verification, and manual testing. Blocks commit if infra or cross-layer specs lack executable depth. Use when code is written and tested but not yet committed, before submitting changes, or as a final review before git commit.
Pre-commit quality checklist covering lint, typecheck, tests, code-spec sync, API changes, database migrations, cross-layer verification, and manual testing. Blocks commit if infra or cross-layer specs lack executable depth. Use when code is written and tested but not yet committed, before submitting changes, or as a final review before git commit.
Unicode-safe fallback workflow for multi-format document generation with character sanitization
Unicode-safe fallback workflow for multi-format document generation with character sanitization and explicit error capture
Unmerge merged cells in openpyxl worksheets before writing values to avoid AttributeError
Verify generated PDF files using PyPDF2 to check page counts and integrity
Verify generated PDFs for integrity and page count using PyPDF2 before task completion.
Verify PDF page counts and file integrity programmatically using PyPDF2 after generation
Use reportlab's pre-defined styles from getSampleStyleSheet() correctly
Create and modify Excel workbooks with mandatory deterministic Python verification of workbook structure, required sheets, populated columns, and sample counts before reporting completion.
Edit Excel workbooks only after anchored preflight audit, then require deterministic Python/openpyxl post-write proof that every requested criterion is satisfied or explicitly reconciled before finalizing.
Use a deterministic Python/openpyxl inspection pass to verify workbook structure, counts, marked rows, and output-file existence when delegated spreadsheet summaries seem inconsistent.
Create or edit Excel workbooks with openpyxl-specific pitfall handling, anchored preflight audit, and deterministic post-write proof that every criterion is satisfied
Verify output format, file coverage, and task alignment before completing
Ensure all required output files are created and verified before marking a task complete
Verify task completion by checking filesystem state when execute_code_sandbox or run_shell return misleading unknown errors
Safely append CSS styles from one file to another, with per-selector grep verification after every append to catch silent truncation that tail or wc-l alone would miss
Read-then-diff before writing a file to ensure the write is skipped when the content already matches, preventing unnecessary modifications and downstream side effects.
Safely append CSS styles from one file to another by identifying missing rules, adapting CSS variables, and verifying changes
Reliably run TypeScript type-checking (npx tsc --noEmit) by using shell_agent as a fallback when run_shell fails due to environment or timeout issues.
How to reliably write files containing multi-byte Unicode (emoji, special symbols) when write_file fails with 'unknown error' by falling back to run_shell with a heredoc.
Workaround for write_file failures caused by special characters (apostrophes, backticks, template literals) using a Python heredoc script, with mandatory post-write verification via read_file and cleanup of /tmp helper scripts.
Workaround for write_file failures caused by special characters (apostrophes, backticks, template literals) using a Python heredoc script, plus a reliable TypeScript type-checking step that filters output to only the newly-written files to avoid being misled by pre-existing errors.
