v0.75.56

Added

• Unified model hub at /model (and Ctrl+L) with Select / Cycle / Manage tabs: grouped model picking with recent models, cycle whitelist management, and interactive custom provider management.
• OpenAI-compatible /login flow discovers models via GET {baseUrl}/models, uses human-readable provider ids, and falls back to selecting the first available model when no provider default exists.
• models.json can be written from the TUI Manage tab (upsertProviderInModelsJson / removeProviderFromModelsJson).
• Settings store recentModels (most-recent first, max 10) and update on model select/cycle.

Changed

• /scoped-models is now an alias that opens the model hub Cycle tab.
• Selecting a model after custom provider setup no longer requires a hard-coded default for every provider.