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agessaman
97645b9cfe
Reworked implementation of the multilingual-response feature (issue #218) as a reusable, framework-level capability instead of logic bolted onto HelloCommand. - modules/lang_detector.py: keyword-first detection (reliable for the short greetings typical on mesh) with optional langdetect for longer text; results are constrained to languages that actually have a translation file. - core.py: cache Translator instances by language (get_translator) so per-message switching never re-reads files, and expose available_languages() derived from translations/*.json. Store translation_path; keep cache/path consistent on config reload. - base_command.py: task-local translator override via a ContextVar (safe under asyncio concurrency, no global mutation), plus detect_response_language() and a respond_in_sender_language() context manager any command can opt into. - hello_command.py: build the reply inside respond_in_sender_language(); the only awaited call (send_response) stays outside the override window. - Gated by [Localization] auto_detect_language (default false); langdetect is an optional [lang] extra, not a hard dependency. Tests: unit coverage for the detector and the base-command wiring.