- add per-model context, reasoning, modality, visibility, and parallel tool settings
- persist customizations separately and apply them during catalog generation
- support restoring individual or all models to official fallback templates
- expose full fallback reasoning levels while keeping Fast available
- add localized UI, validation, documentation, and regression tests
- Sync all 11 dedicated model templates from the upstream Codex catalog
- Preserve official context windows, prompts, capabilities, and reasoning levels
- Remove the custom Spark and DeepSeek dedicated templates
- Move fallback model metadata into a standalone embedded resource
- Prevent remote catalogs and local caches from overriding fallback configuration
- Add catalog revision checks to prevent older templates from replacing newer ones
- Keep Fast mode available for both dedicated and fallback models
- Add regression coverage for Astra generation, catalog revisions, and fallback isolation
Validation: all 332 backend tests pass.
- Align fallback defaults and instruction structure with upstream Codex while preserving Fast availability for all models
- Stop forcing fallback reasoning levels or inferring original-image support
- Sync managed catalogs on model refresh, configuration changes, and every 30 seconds
- Remove unavailable models, replace missing defaults, and handle empty-list recovery
- Preserve existing configuration on request failures or invalid responses
- Serialize refreshes, update UI model lists, and preserve backups across restarts
- Add regression coverage for fallback compatibility, stale-model cleanup, and configuration recovery
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