v2.6.1

## What's fixed

- AI-generated and grammar-corrected replies no longer lose hyperlinks, links now survive in the reply box.
- Backend messages now fall back to the default language - English, when a translation is missing instead of showing the raw key.

## Upgrade notes

- Always take a database backup before upgrading.
- Follow the steps [here](https://docs.libredesk.io/getting-started/upgrade).


## Changelog
* 5c561125 Merge pull request #458 from abhinavxd/fix/ai-link-loss
* 95b9993e fall back to english for untranslated backend strings
* 2e89586a send links to the LLM as markdown so drafts keep real hyperlinks
* da378e76 refine reply drafting instructions for clarity and precision
* 0efd6431 move improve-draft plain-text fallback to the server
* fa4305d8 address PR review: stricter HTML detection and fence label punctuation
* a5a029d8 fix lossy text conversions in AI features
* 72c3f298 fix hyperlinks getting lost across AI features
* 418a82e1 Update README.md
* f53d4a72 Update README.md