Corporate Tax Form Fill — IRS PDF Automation Fill IRS tax form PDFs programmatically using pymupdf (fitz). Companion to (analysis → execution). When to Use - User has computed tax numbers and needs to fill an IRS PDF form - User wants to regenerate a filled PDF after changing values - User needs to discover field names in a new IRS form version Prerequisites - (provides the module) - Blank fillable PDF from IRS (e.g., from irs.gov/pub/irs-pdf/) - Source of truth YAML with all computed values Step 1: Field Discovery Extract all widget fields from the blank PDF to build a field map: Field namin…