fix(cli): update TUI status bar model name on provider fallback

The status bar reads self.model from the CLI class, which is set once
at init and never updated when _try_activate_fallback() switches to a
backup provider/model in run_agent.py. This causes the TUI to display
the original model name while context_length_max changes, creating a
confusing mismatch.

Read the model name from agent.model (live, updated by fallback) with
self.model as fallback before the agent is created. Remove the
redundant getattr(self, 'agent') call that was already done above.

agent/auxiliary_client.py

@@ -702,7 +702,7 @@ def _resolve_api_key_provider() -> Tuple[Optional[OpenAI], Optional[str]]:
             logger.debug("Auxiliary text client: %s (%s) via pool", pconfig.name, model)
             extra = {}
             if "api.kimi.com" in base_url.lower():
-                extra["default_headers"] = {"User-Agent": "KimiCLI/1.0"}
+                extra["default_headers"] = {"User-Agent": "KimiCLI/1.3"}
             elif "api.githubcopilot.com" in base_url.lower():
                 from hermes_cli.models import copilot_default_headers
 
@@ -721,7 +721,7 @@ def _resolve_api_key_provider() -> Tuple[Optional[OpenAI], Optional[str]]:
         logger.debug("Auxiliary text client: %s (%s)", pconfig.name, model)
         extra = {}
         if "api.kimi.com" in base_url.lower():
-            extra["default_headers"] = {"User-Agent": "KimiCLI/1.0"}
+            extra["default_headers"] = {"User-Agent": "KimiCLI/1.3"}
         elif "api.githubcopilot.com" in base_url.lower():
             from hermes_cli.models import copilot_default_headers
 
@@ -1195,7 +1195,7 @@ def _to_async_client(sync_client, model: str):
 
         async_kwargs["default_headers"] = copilot_default_headers()
     elif "api.kimi.com" in base_lower:
-        async_kwargs["default_headers"] = {"User-Agent": "KimiCLI/1.0"}
+        async_kwargs["default_headers"] = {"User-Agent": "KimiCLI/1.3"}
     return AsyncOpenAI(**async_kwargs), model
 
 
@@ -1315,7 +1315,13 @@ def resolve_provider_client(
                 )
                 return None, None
             final_model = model or _read_main_model() or "gpt-4o-mini"
-            client = OpenAI(api_key=custom_key, base_url=custom_base)
+            extra = {}
+            if "api.kimi.com" in custom_base.lower():
+                extra["default_headers"] = {"User-Agent": "KimiCLI/1.3"}
+            elif "api.githubcopilot.com" in custom_base.lower():
+                from hermes_cli.models import copilot_default_headers
+                extra["default_headers"] = copilot_default_headers()
+            client = OpenAI(api_key=custom_key, base_url=custom_base, **extra)
             return (_to_async_client(client, final_model) if async_mode
                     else (client, final_model))
         # Try custom first, then codex, then API-key providers
@@ -1394,7 +1400,7 @@ def resolve_provider_client(
         # Provider-specific headers
         headers = {}
         if "api.kimi.com" in base_url.lower():
-            headers["User-Agent"] = "KimiCLI/1.0"
+            headers["User-Agent"] = "KimiCLI/1.3"
         elif "api.githubcopilot.com" in base_url.lower():
             from hermes_cli.models import copilot_default_headers
 

agent/credential_pool.py

@@ -18,12 +18,14 @@ import hermes_cli.auth as auth_mod
 from hermes_cli.auth import (
     CODEX_ACCESS_TOKEN_REFRESH_SKEW_SECONDS,
     DEFAULT_AGENT_KEY_MIN_TTL_SECONDS,
+    KIMI_CODE_BASE_URL,
     PROVIDER_REGISTRY,
     _codex_access_token_is_expiring,
     _decode_jwt_claims,
     _import_codex_cli_tokens,
     _load_auth_store,
     _load_provider_state,
+    _resolve_kimi_base_url,
     _resolve_zai_base_url,
     read_credential_pool,
     write_credential_pool,
@@ -1084,7 +1086,9 @@ def _seed_from_env(provider: str, entries: List[PooledCredential]) -> Tuple[bool
         active_sources.add(source)
         auth_type = AUTH_TYPE_OAUTH if provider == "anthropic" and not token.startswith("sk-ant-api") else AUTH_TYPE_API_KEY
         base_url = env_url or pconfig.inference_base_url
-        if provider == "zai":
+        if provider == "kimi-coding":
+            base_url = _resolve_kimi_base_url(token, pconfig.inference_base_url, env_url)
+        elif provider == "zai":
             base_url = _resolve_zai_base_url(token, pconfig.inference_base_url, env_url)
         changed |= _upsert_entry(
             entries,

cli.py

@@ -1603,7 +1603,12 @@ class HermesCLI:
         return f"[{('█' * filled) + ('░' * max(0, width - filled))}]"
 
     def _get_status_bar_snapshot(self) -> Dict[str, Any]:
-        model_name = self.model or "unknown"
+        # Prefer the agent's model name — it updates on fallback.
+        # self.model reflects the originally configured model and never
+        # changes mid-session, so the TUI would show a stale name after
+        # _try_activate_fallback() switches provider/model.
+        agent = getattr(self, "agent", None)
+        model_name = (getattr(agent, "model", None) or self.model or "unknown")
         model_short = model_name.split("/")[-1] if "/" in model_name else model_name
         if model_short.endswith(".gguf"):
             model_short = model_short[:-5]
@@ -1629,7 +1634,6 @@ class HermesCLI:
             "compressions": 0,
         }
 
-        agent = getattr(self, "agent", None)
         if not agent:
             return snapshot
 

hermes_cli/auth.py

@@ -250,7 +250,7 @@ PROVIDER_REGISTRY: Dict[str, ProviderConfig] = {
 # Kimi Code Endpoint Detection
 # =============================================================================
 
-# Kimi Code (platform.kimi.ai) issues keys prefixed "sk-kimi-" that only work
+# Kimi Code (kimi.com/code) issues keys prefixed "sk-kimi-" that only work
 # on api.kimi.com/coding/v1.  Legacy keys from platform.moonshot.ai work on
 # api.moonshot.ai/v1 (the default).  Auto-detect when user hasn't set
 # KIMI_BASE_URL explicitly.

run_agent.py

@@ -4968,9 +4968,21 @@ class AIAgent:
                 # Swap OpenAI client and config in-place
                 self.api_key = fb_client.api_key
                 self.client = fb_client
+                # Preserve provider-specific headers that
+                # resolve_provider_client() may have baked into
+                # fb_client via the default_headers kwarg.  The OpenAI
+                # SDK stores these in _custom_headers.  Without this,
+                # subsequent request-client rebuilds (via
+                # _create_request_openai_client) drop the headers,
+                # causing 403s from providers like Kimi Coding that
+                # require a User-Agent sentinel.
+                fb_headers = getattr(fb_client, "_custom_headers", None)
+                if not fb_headers:
+                    fb_headers = getattr(fb_client, "default_headers", None)
                 self._client_kwargs = {
                     "api_key": fb_client.api_key,
                     "base_url": fb_base_url,
+                    **({"default_headers": dict(fb_headers)} if fb_headers else {}),
                 }
 
             # Re-evaluate prompt caching for the new provider/model