Merge origin/master (v0.5.75) into gitea/new_feature

Resolve conflicts:
- package.json / cli/package.json: take 0.5.75
- .gitignore: union both sides (upstream 9router-*/temp files + local state dirs)
- CHANGELOG.md: keep both blocks, v0.5.75 above v0.5.70
- nonStreamingHandler.js: merge imports (unwrapClineEnvelope +
  tokensForDetail/shouldPersistRequestDetail); drop dead appendRequestLog
- providers/[id]/page.js: union useState blocks (compatible-model states
  + importingClineModels)

Co-authored-by: CommandCodeBot <noreply@commandcode.ai>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "9router-app",
-  "version": "0.5.70",
+  "version": "0.5.75",
   "description": "9Router web dashboard",
   "private": true,
   "scripts": {