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>

.gitignore

@@ -89,6 +89,18 @@ graphify-out/*
 
 # Kiro local workspace state
 .kiro/
+9router-*
+
+# Local sensitive / temp files
+.engine-token.txt
+.tmp-prov.json
+.tmp-providers.json
+.oauth-session.json
+.dev-server.log
+.dev-server-err.log
+.start-dev.ps1
+start-dev-silent.cjs
+debug.log
 
 # CommandCode CLI local state (auth/taste/projects)
 .commandcode/