Remove the sd-sub-borrow skill as it was redundant with the existing
"Two-digit with ones place borrowing" skill which naturally covers
problems like 52-17, 43-18, etc.
The skill was problematic because:
- digitRange: { min: 1, max: 1 } constrained both operands to single digits
- But the description "13-7, 15-8" implied 2-digit minus 1-digit
- This contradiction made it impossible to generate appropriate problems
- Students were seeing either 0% or 100% of the intended pattern
Rather than fix the complex asymmetric digit range logic, we're removing
the skill entirely. The progression now flows:
- sd-sub-no-borrow (single-digit without borrowing)
- td-sub-no-borrow (two-digit without borrowing)
- td-sub-ones-borrow (two-digit with ones place borrowing)
This provides a cleaner, more natural progression.
Changes:
- Remove sd-sub-borrow skill definition from skills.ts
- Remove 'sd-sub-borrow' from SkillId type union
- Update td-sub-no-borrow prerequisites to reference sd-sub-no-borrow
- Remove sd-sub-borrow from skillMigration.ts mapping
- Remove generateTeensMinusSingles() function from problemGenerator.ts
- Revert generateOnesOnlyBorrow() to standard logic
Also includes previous fixes:
- Fix AllSkillsModal tab button types to prevent modal closing
- Add operator-specific display rules for mixed mode
- Add borrowNotation and borrowingHints to displayRules schema
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Fixed two critical bugs preventing ten-frames from rendering:
1. **Mastery mode not handled** (typstGenerator.ts:61)
- Code only checked for 'smart' | 'manual' modes
- Mastery mode fell into manual path, tried to use boolean flags that don't exist
- Resulted in all display options being `undefined`
- Fix: Check for both 'smart' OR 'mastery' modes (both use displayRules)
2. **Typst array membership syntax** (already fixed in previous commit)
- Used `(i in array)` which doesn't work in Typst
- Changed to `array.contains(i)`
Added comprehensive unit tests (tenFrames.test.ts):
- Problem analysis tests (regrouping detection)
- Display rule evaluation tests
- Full Typst template generation tests
- Mastery mode specific tests
- All 14 tests now passing
Added debug logging to trace display rules resolution:
- displayRules.ts: Shows rule evaluation per problem
- typstGenerator.ts: Shows enriched problems and Typst data
- Helps diagnose future issues
The issue was that mastery mode (which uses displayRules like smart mode)
was being treated as manual mode (which uses boolean flags), resulting in
undefined display options.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Recover all changes from stash including:
- Linter/formatter updates across codebase
- Settings permission updates for git checkout
This commit captures the complete state of work that was
stashed during the previous session's git operations.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Fix script to use correct displayRules property access
- Use valid rule modes (whenRegrouping, when3PlusDigits, whenMultipleRegroups)
- Generate 4 examples with same problem complexity but different scaffolding
- Add 'as const' assertions for TypeScript literal type inference
Generated SVGs:
- full-scaffolding.svg
- medium-scaffolding.svg
- minimal-scaffolding.svg
- no-scaffolding.svg
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Thomas Hallock