e497f26d58
- Add a source-method toggle (article URL / pasted text) with per-mode hints, a 24,000-character counter, and mode-aware submit validation - Validate URLs client-side (http/https only) with a dedicated error message; only the active mode's field is sent to the API - Keep URL mode selected when arriving with source_url query params - Refresh the page layout and update zh-CN/en-US copy for both modes