Replace the OpenRouter HTTP client with a DeepSeek client:
- data/openrouter/ -> data/deepseek/; OpenRouterClient -> DeepSeekClient
(+ DeepSeekCompletion / DeepSeek*Exception)
- base URL api.deepseek.com, drop OpenRouter-only headers
- DeepSeek has no strict json_schema: use response_format json_object
and rely on the prompt for shape (ai_schema.dart removed)
- secure-storage key openrouter_api_key -> deepseek_api_key
- default model deepseek/deepseek-v4-flash -> deepseek-chat
- l10n strings, test dart-defines (DEEPSEEK_API_KEY/_TEST_MODEL), docs
Also bundles in-progress findBodyIgnoreRule (body-level ignore rules
applied before the AI call) already present in the working tree.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
SandersandClaude Opus 4.8