docs(readme): document AI agent chat and add screenshot

The built-in AI agent chat over wiki content is fully implemented
(server module, ~40 tools, RAG search, provider settings, external MCP),
so showcase it in both READMEs:

- list AI agent chat among the from-scratch community replacements
- add a "What's different" table row and a dedicated feature section
- move AI chat from the "In progress" roadmap bucket to "Done"
- add it to the Features list
- add docs/screenshots/ai-chat.png and show it in the Screenshots section

Updated in sync in README.md and README.ru.md.
This commit is contained in:
vvzvlad
2026-06-17 23:18:10 +03:00
parent cb2b7a9851
commit 48c158bb7e
3 changed files with 56 additions and 6 deletions

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