9b7ec36828
Every LLM-backed feature (Post-Processing, Proofreading, Title Generation, Property Filler) now reads from one CHAT_PROVIDERS registry instead of 5 hand-duplicated provider lists, so they always offer the exact same providers in the exact same order. - Add Groq as a 5th chat-completion provider (was transcription-only despite its OpenAI-compatible API and an already-collected key). - Provider dropdowns disable options with no API key configured (shown as e.g. "Anthropic (no API key)") instead of silently failing at runtime when picked. - Collapse 3 byte-for-byte duplicated resolveProvider() methods (Proofreader, TitleGenerator, PropertyFiller) plus AudioHandler's getPostProcessingApiKey() into one resolveChatProvider() helper (src/ProviderResolver.ts). - Fix Custom provider: previously Proofreading/Title/Property silently reused Post-Processing's postProcessingUrl with no visible field to set it. Renamed to a shared customApiUrl field with its own UI (createCustomProviderFields), now exposed on every tab that offers Custom, plus rows on the API Keys tab. Migrates old data.json values automatically. - Update README settings reference and getting-started sections to match. No behavior change for existing single-provider setups; migration handles the postProcessingUrl -> customApiUrl rename transparently.