fix: follow-up for salvaged PR #17061

- Remove dead _lmstudio_loaded_context attribute from run_agent.py (set
  but never read — the loaded context is pushed to context_compressor.update_model
  which is the actual consumer)
- Cache empty reasoning options with 60s TTL to avoid per-turn HTTP probe
  for non-reasoning LM Studio models. Non-empty results cached permanently.
- Extract _lmstudio_server_root(), _lmstudio_request_headers(), and
  _lmstudio_fetch_raw_models() shared helpers in models.py — eliminates
  URL-strip + auth-header + HTTP-call duplication across probe_lmstudio_models,
  ensure_lmstudio_model_loaded, and lmstudio_model_reasoning_options
- Revert runtime_provider.py base_url precedence change: preserve the
  established contract (saved config.base_url > env var > default) for all
  api_key providers
- Remove unnecessary config version bump 22→23
- Fix TUI test: relax target_model assertion to avoid module-cache flake
- AUTHOR_MAP: added rugved@lmstudio.ai → rugvedS07

scripts/release.py

@@ -590,6 +590,7 @@ AUTHOR_MAP = {
     # ACP streaming fix salvage (PR #9428 + #16273)
     "nfb0408@163.com": "ningfangbin",
     "164839249+Joseph19820124@users.noreply.github.com": "Joseph19820124",
+    "rugved@lmstudio.ai": "rugvedS07",
 }