SUCCESS: 4/4 tests created, all compile successfully

Test Results:
- pattern_match_09_tuple_pairs: Compiles ✅ (SKIP - feature not ready)
- pattern_match_10_tuple_triples: Compiles ✅ (SKIP - feature not ready)
- pattern_match_11_tuple_wildcards: Compiles ✅ (SKIP - feature not ready)
- pattern_match_12_tuple_exhaustiveness: Compiles ✅ (SKIP - feature not ready)

Files Created:
- tests/golden/pattern_match_09_tuple_pairs.dingo (29 lines)
- tests/golden/pattern_match_09_tuple_pairs.go.golden (67 lines)
- tests/golden/pattern_match_10_tuple_triples.dingo (30 lines)
- tests/golden/pattern_match_10_tuple_triples.go.golden (75 lines)
- tests/golden/pattern_match_11_tuple_wildcards.dingo (30 lines)
- tests/golden/pattern_match_11_tuple_wildcards.go.golden (69 lines)
- tests/golden/pattern_match_12_tuple_exhaustiveness.dingo (58 lines)
- tests/golden/pattern_match_12_tuple_exhaustiveness.go.golden (144 lines)

Total: 8 files, 502 lines

Test Coverage:
✅ 2-element tuples (basic exhaustive)
✅ 3-element tuples (realistic scenario)
✅ Wildcard catch-all semantics
✅ 6-element max limit demonstration
✅ Nested switch structure
✅ Exhaustiveness checking patterns
✅ Non-exhaustive example (commented)

Quality Checks:
✅ All .go.golden files compile (syntax valid)
✅ Follow golden test guidelines strictly
✅ Realistic, educational scenarios
✅ Proper naming convention
✅ Complete marker set in golden files
✅ Idiomatic Go output

Status: Ready for plugin transformation (Task D1)
Tests will activate when feature implementation complete.
