Add 26 new BATS tests validating all CLI flags in ralph_loop.sh:
- Help flag tests (2): --help, -h short flag
- Flag value tests (6): --calls, --prompt, --monitor, --verbose, --timeout
- Status flag tests (2): --status with/without status.json
- Circuit breaker tests (2): --reset-circuit, --circuit-status
- Invalid input tests (3): unknown flag, invalid timeout, invalid format
- Multiple flags tests (3): combinations, all flags, early exit
- Flag order tests (2): verify order independence
- Short flag tests (6): -c, -p, -s, -m, -v, -t equivalence
Test strategy uses --help as early-exit escape to validate parsing
without triggering main loop execution.
Closes#10
fffcc26427