[0xShug0]

Model-family and variant selection currently uses separate conditionals and local lookup code. This change adds ModelRouteTable<Key, Impl> and explicit model-local registration tables, retaining one selected descriptor for execution and family identity.

Migrates Parakeet/Phonon2/Bark3/Haas, PocketTTS/Gradium Phonon, VibeVoice ASR, RoFormer, Audio Flamingo, Irodori RF/MF, and SeedVC. Irodori selects sampler and properties together; RoFormer registrations use named policy assignments. Routing stays at load, session, or request boundaries. Model specs, graph math, backend dispatch, and public options are unchanged.

Validation

• Debug build and four focused tests passed, covering route selection, invalid registrations, Parakeet variants, Bark3 sessions, and Irodori scheduling.
• All 25 real-package CUDA end-to-end cases passed; text and audio artifacts matched the main baseline exactly, including offline and streaming cases where applicable.
• Sequential A→B→B→A comparisons, followed by reverse-order checks for positive timing differences, found no established performance regression. Offline measurements excluded session warmup; streaming CLI measurements used fresh sessions.
• Irodori RF showed a 1.5–3.6% unpinned timing increase. A repeat with identical CPU affinity reversed it to 1.0% faster, supporting scheduling variability rather than an established routing regression.
• All 96 repeated-output comparisons passed.