[Feature Request] Implementation of "Click-to-Fill" / OCR-Assisted Metadata Entry

Description When reviewing or manually editing metadata for a document (e.g., adding a specific invoice number or a custom date that wasn't automatically matched), users currently have to either type the information manually or use standard "highlight, copy, and paste" actions. This is time-consuming and prone to typos, especially for long alphanumeric strings. Describe the solution you'd like I suggest implementing a "Click-to-Fill" (or Point-and-Click) indexing feature in the document editing view. Professional ECM systems (like ELO Digital Office or Docuware) use this to speed up manual workflows. How it should work: 1. While the metadata sidebar is open and a specific field (e.g., "Document Number") is focused. 2. The user can hover over the OCR text in the document viewer. 3. Words or phrases under the cursor are highlighted. 4. Upon clicking a word/phrase, the text is automatically copied into the currently focused metadat…