Exclude HYUNDAI_IONIQ_6 from the recent Hyundai CAN-FD highway friction wrapper, restoring original friction threshold/error passthrough in both controller modes. Preserve all steering limits, ramp rates, startup PID settings, scalar calibration, other vehicles, native assets and dropout repairs.
Update regression expectations and add exact Ioniq friction passthrough coverage. Focused suite: 22 passed; 559 repository Python imports match exact parent plus the three intended files. Independent numerical checks: 80,640 comparisons. Protected inventory receipt independently verified. This is the user-requested tuning revert, not a lag fix or on-device qualification.
* Add gas override boost, mici boost bar, and Rivian maximum set speed
* Refactor acceleration boost and gate accumulation on model limit
* Fade acceleration boost with model acceleration
* Limit boost buildup per gas override
* Latch boost eligibility before gas override
* Move model limiting check into AccelBoost
* Use DT_MDL directly in AccelBoost
* Clarify acceleration boost state names
* Scale acceleration boost by speed instead of decaying it
* Enable Experimental Mode by default
* Scale boost buildup with the application speed ramp
* Fix boost serialization and model-limit eligibility
* Remove boost UI and Experimental Mode default changes
* Combine boost update and application
Original-upstream-commit: ab8c84c3989bab34969d83e78c5fad3ee5b95112
Upstream: https://github.com/commaai/openpilot/commit/ab8c84c3989bab34969d83e78c5fad3ee5b95112
Connect shared feature owners to vehicle and control processes. Migrate retired settings once before startup consumers while preserving effective preferences and vehicle-specific numeric adjustments.
firestar5683