Add dedicated batch test modes for web-cookie, search, and audio
providers in the dashboard, API route, and request validation so
category-level testing targets the correct connections.
Rename legacy qoder refresh and usage helpers from iflow to qoder
for consistency, and tighten regex handling in response cleaning,
thinking compression, and proxy matching to address edge cases and
static analysis findings.
Also update related tests, typing fixes, and README star history
embeds.