Status: Success

Fixed non-deterministic switch case generation in pattern matching by sorting map keys before iteration.

Changed: 1 file (pkg/preprocessor/rust_match.go)
Added: sortVariantsInPlace helper function + sort import
Fixed: 3 locations (generateNestedTupleSwitches + 2 in generateNestedSwitchLevel)

Validation: 5/5 runs produce identical output (pattern_match_01_basic, pattern_match_02_guards, pattern_match_09_tuple_pairs)

Determinism: 100% verified across multiple test files

Next: Golden tests need regeneration with `go test ./tests -run TestGoldenFiles/pattern_match -update`

Details: ai-docs/sessions/20251119-142658/02-implementation/task-priority1-changes.md
