Add Web Search to "Ask AI" (SearxNG/Perplexity Support)

[binuengoor]

Description:
Supercmd's "Ask AI" lacks web search. Add optional integration to fetch live results via SearxNG (privacy-friendly) or Perplexity API (sourced answers).

Expected Behavior:

• Toggle to enable web search.
• Query search API (SearxNG/Perplexity).
• Feed results to LLM for context-aware answers.

Key Features:

• SearxNG/Perplexity API support.
• UI toggle + source citations.

Request:
Implement web search for "Ask AI" using SearxNG/Perplexity APIs. Prioritize SearxNG for local use.