Fix a UI regression from v0.10

This version introduces a preview version of Agent mode, providing the model with 4 built-in tools:
Bash, Write, Read, Edit (to run commands and edit files)
Agent mode will load Agent Skills from ~/.claude/skills and ~/.agents/skills by default.
Agent mode currently disables MCP, Artifacts, and Web Search in this preview release.
In Agent mode the model will automatically choose which tool or skill to use, but you can also type / in the input area to manally select a skill and preload its SKILL.md file.
Fix GPT-5.2 Chat
0% idle CPU usage has been achieved internally.
Fix cpu usage.
Fix reasoning UI for OpenAI, #1207
Tweaks.
Fix reasoning UI for OpenRouter gemini-3-flash
Add gpt-image-1.5 in OpenAI and AiHubMix
Fix GPT 5.2 xhigh reasoning
fix #1201
Fix command center
Fix chat restoring, #1197
fix invalid peer certificate error
fix http: use rustls
Fix styling and description for xhigh reasoning effort
xhighFix web search.
Update default models for web search / chat title
Fix web search #1172
Fix Anthropic / Claude 4.5 Opus