Add getDecisionWithOverrides() function that checks manual overrides
before algorithmic rules. Overrides are applied in priority order:
flare > stress > sleep > pms, and all force REST status.
Includes comprehensive test suite with 24 tests covering:
- All 8 algorithmic priority rules
- Override type behaviors
- Override priority enforcement
- Empty override fallthrough to algorithmic rules
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>