Implement binary operations (BinOp) support

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**Parser changes (parser.py):**
- Added ast.BinOp handling in _transform_expr()
- Emits: {type: "binop", left: ..., op: "Add|Sub|Mult|Div|Mod", right: ...}

**Codegen changes (llvm_codegen_signals.py):**
- Added BinOp handling in _emit_expr()
- Maps Python ops to LLVM instructions:
  - Add → add i32
  - Sub → sub i32
  - Mult → mul i32
  - Div → sdiv i32 (signed division)
  - Mod → srem i32 (signed remainder)

**Result:**
Before: count = count + 1 → store i32 0 (WRONG!)
After:  count = count + 1 → load, add i32 1, store ✓

**Still TODO:**
The counter buttons now UPDATE the signal correctly, but the display
doesn't update because f-string text nodes aren't reactive yet.
We need reactive text nodes (similar to reactive attributes).

All 55 tests passing ✓

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

...

This commit is contained in:

Aaron SinclairandClaude committed 2025-11-15 12:18:16 -08:00

1 parent 60bbad9c68

commit e1219ea0c1

7 files changed

+78 -47

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