Add two comprehensive blog posts introducing subtraction and multi-digit
worksheet features with visual examples:
**Subtraction Worksheets Post:**
- 7 progressive scaffolding levels (no-borrowing through cascading borrows)
- Side-by-side comparisons showing impact of borrow notation
- Teaching progression guide (7+ week curriculum)
- 9 SVG examples demonstrating different scaffolding options
- Focus on borrow notation boxes and place value colors
**Multi-Digit Worksheets Post:**
- Support for 1-5 digit arithmetic problems
- 6-color place value system across all digit ranges
- Mixed problem sizes within single worksheet
- Adaptive scaffolding based on digit count
- 6 SVG examples (2-digit baseline through 5-digit advanced)
**Code Fixes:**
- Fix typstGenerator.ts: Pass showBorrowNotation instead of showCarryBoxes
to subtraction-problem-stack function (line 220)
- Simplify hint text rendering in borrowBoxes.ts (remove nested text elements)
**Generated Assets:**
- 9 subtraction examples in public/blog/subtraction-examples/
- 6 multi-digit examples in public/blog/multi-digit-examples/
- New generation scripts: generateSubtractionExamples.ts,
generateMultiDigitExamples.ts
Note: Borrowing hints feature (arrows with calculations) needs additional
debugging in Typst rendering layer. Current blog posts focus on working
features: borrow notation boxes, place value colors, and progressive
scaffolding.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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