Fix conversation role alternation + wake-up AI greeting

Rewrite README with screenshots, community focus, full feature coverage

Fix reasoning model UI freeze + chemistry bars not updating

Release prep: light theme, tool activity UI, conversation search/sort, token tracking, connection test, SafeTensors/Transformers GPU backend, AI-enriched memory import, CHANGELOG, readme credits

Add configurable search provider (SearXNG support)

Redesign Writer + Assistant presets for distinct roles

Split assistant into Writer + Virtual Assistant presets

Fix bench_preset_ab global issue, add first A/B results: Mimir wins 5/8 metrics

Add A/B preset evaluation benchmark (Mimir vs Vanilla per preset role)

Merge copilot preset into agent mode, add preset evaluation tests

Fix image passthrough for API backends, multi-agent per-model support, redesign agent editor with model/voice dropdowns

Fix invalid llava-1-5 chat format, let llama-cpp auto-detect

Add 8 new agent tools, vision model dropdown with mmproj auto-scan, BLIP fallback

Fix multi-agent chat, add tools + MCP server support

Add OpenRouter/vLLM/OpenAI-compat backends, copilot preset, fix 3D graph and viz tabs