[KpihX]

This PR makes the opencode-agy-auth plugin fully dynamic by removing all hardcoded model lists.

Changes

• Removed STATIC_MODELS_SIMPLE and TIER_MAPPING hardcoded constants from tier.ts
• Added dynamic model discovery via AGY quota API (retrieveUserQuota)
• New exports in tier.ts:
  • inferModelMetadata() - infers model metadata from model ID patterns
  • extractBaseModelId() - extracts base model ID from tiered variants
  • buildTierMapping() - builds tier mapping from quota response
  • fetchAvailableModelIds() - fetches available model IDs from AGY
  • resolveModelTier() - now accepts dynamic tier mapping
• Updated plugin.ts:
  • buildModelFromBase() - builds ProviderModel from dynamic data
  • buildDynamicModelCatalog() - creates catalog from quota response
  • getDynamicModels() - merges dynamic models with user config
  • Provider models hook now calls dynamic catalog
• Updated v2.ts to use dynamic catalog at startup

How it works

1. When authenticated, the plugin calls AGY's retrieveUserQuota API
2. Extracts modelId from each bucket in the response
3. Groups tiered variants by base model (e.g., gemini-3.8-flash-low -> gemini-3.8-flash)
4. Infers metadata (name, capabilities, limits) from base model ID patterns
5. Builds full ProviderModel catalog dynamically
6. Merges with any user-defined model overrides

Verification

• npm run build passes TypeScript
• Manual test with opencode models shows only models from user's actual AGY quota

This ensures the plugin always shows exactly the models the user has access to in their AGY account, not a stale hardcoded list.