chore: bump Go from 1.22 to 1.26 (latest stable)

fix: strip <think> blocks from display; sync modelSelect on connect

fix: add thinking indicator to tool-call loop path

Fix: Re-fetch tools when model changes

refactor: simplify thinking indicator logic

feat: add thinking indicator for streaming responses

feat: dropdown tool selector with checkboxes

feat: backend tool execution with SearXNG web search + page fetch

docs: Add VS Code inference parameters workaround section

docs: Add VS Code Copilot Chat OAuth2 configuration section

feat: implement custom signout handler and update UI

fix(quickstart): update sign-out link and help text

fix: update signout link and add cookie debugging

fix(main): support dynamic authentik proxy cookie names

fix: update baseURL to ai.rebelscum.network and revert to app mode