refactor: migrate weather provider to Open-Meteo, improve location extraction, and inject server time into persona context

fix: correct wttr.in endpoint usage and improve timezone resolution logic for diverse location inputs

feat: update capture_camera_image to trigger frontend camera modal via marker string

feat: add interactive webcam modal for photo capture and file uploads

feat: implement camera capture tool to enable vision capabilities via ffmpeg

refactor: require essential environment variables by raising RuntimeErrors instead of using default values

feat: add crypto price tool and update timezone logic to use local system zoneinfo

feat: migrate web search implementation from DuckDuckGo to SearXNG JSON API

refactor: replace SearXNG with DuckDuckGo search and add support for custom search endpoints

Fix eror

Fix error

Fix sanitize query

Update tools

Add more simple tools

Add more url and max char

Add more web search functions

Bump up web search max results and web fetch max chars

Add web fetch function

Remove the obsolete duckduckgo_search

fix: switch duckduckgo-search to ddgs package

fix: switch duckduckgo-search to ddgs package

Switch from SearXNG to DuckDuckGo due to HF constraint

Update core/tools.py

Rename code/tools.py to core/tools.py