Brandon Lucas 52ad5f8781 feat: implement Random and Time built-in effects ...

Add Random and Time effects for random number generation and
time-based operations. These effects can be used in any
effectful code block.

Random effect operations:
- Random.int(min, max) - random integer in range [min, max]
- Random.float() - random float in range [0.0, 1.0)
- Random.bool() - random boolean

Time effect operations:
- Time.now() - current Unix timestamp in milliseconds
- Time.sleep(ms) - sleep for specified milliseconds

Changes:
- Add rand crate dependency
- Add Random and Time effect definitions to types.rs
- Add effects to built-in effects list in typechecker
- Implement effect handlers in interpreter
- Add 4 new tests for Random and Time effects
- Add examples/random.lux demonstrating usage

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2026-02-13 09:49:09 -05:00

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