fix Command Code 403: add cc_version field + x-command-code-version header

src/codex-launcher-gui

@@ -123,6 +123,7 @@ PROVIDER_PRESETS = {
     "Command Code": {
         "backend_type": "command-code",
         "base_url": "https://api.commandcode.ai",
+        "cc_version": "0.26.8",
         "models": [
             "deepseek/deepseek-v4-flash", "deepseek/deepseek-v4-pro",
             "anthropic:claude-sonnet-4-6", "anthropic:claude-haiku-4-5-20251001",
@@ -192,6 +193,8 @@ def apply_provider_preset(endpoint, preset_name):
     updated["provider_preset"] = preset_name
     updated["backend_type"] = preset["backend_type"]
     updated["base_url"] = normalize_base_url(preset["base_url"])
+    if preset.get("cc_version") and not updated.get("cc_version"):
+        updated["cc_version"] = preset["cc_version"]
     if not updated.get("models"):
         updated["models"] = list(preset.get("models", []))
     if not updated.get("default_model") and updated.get("models"):
@@ -418,6 +421,7 @@ def _start_proxy_for(endpoint, logfn):
         "backend_type": endpoint["backend_type"],
         "target_url": normalize_base_url(endpoint["base_url"]),
         "api_key": endpoint["api_key"],
+        "cc_version": endpoint.get("cc_version", ""),
         "models": [{"id": m, "object": "model", "created": 1700000000, "owned_by": endpoint["name"]}
                    for m in endpoint.get("models", [])],
     }
@@ -1399,6 +1403,10 @@ class EditEndpointDialog(Gtk.Dialog):
         self._entry_key.set_visibility(False)
         add_row(4, "API Key:", self._entry_key)
 
+        self._entry_cc_ver = Gtk.Entry(text=self._data.get("cc_version", ""))
+        self._entry_cc_ver.set_placeholder_text("e.g. 0.26.8 (Command Code only)")
+        add_row(5, "CC Version:", self._entry_cc_ver)
+
         # Models
         mlbl = Gtk.Label(label="Models:", xalign=0)
         area.pack_start(mlbl, False, False, 4)
@@ -1492,6 +1500,9 @@ class EditEndpointDialog(Gtk.Dialog):
             self._entry_url.set_text(preset.get("base_url", ""))
             if not self._entry_key.get_text().strip():
                 self._entry_key.set_text("")
+            cc_ver = preset.get("cc_version", "")
+            if cc_ver and not self._entry_cc_ver.get_text().strip():
+                self._entry_cc_ver.set_text(cc_ver)
             if preset.get("models") and len(self._model_store) == 0:
                 for mid in preset["models"]:
                     self._model_store.append([mid])
@@ -1594,6 +1605,9 @@ class EditEndpointDialog(Gtk.Dialog):
         new_ep = {"name": name, "backend_type": bt, "base_url": url,
                   "api_key": key, "default_model": default, "models": models,
                   "provider_preset": self._combo_preset.get_active_text() or "Custom"}
+        cc_ver = self._entry_cc_ver.get_text().strip()
+        if cc_ver:
+            new_ep["cc_version"] = cc_ver
         new_ep["base_url"] = normalize_base_url(new_ep["base_url"])
 
         # Update or append

src/translate-proxy.py

@@ -80,6 +80,7 @@ BACKEND = CONFIG["backend_type"]
 TARGET_URL = CONFIG["target_url"].rstrip("/")
 API_KEY = CONFIG["api_key"]
 MODELS = CONFIG["models"]
+CC_VERSION = CONFIG.get("cc_version", "")
 
 # ═══════════════════════════════════════════════════════════════════
 # Shared helpers
@@ -745,6 +746,7 @@ class Handler(http.server.BaseHTTPRequestHandler):
             "Content-Type": "application/json",
             "Authorization": f"Bearer {API_KEY}",
             "Accept": "text/event-stream, application/json",
+            "x-command-code-version": CC_VERSION or "0.26.8",
         }, browser_ua=True)
         print(f"[translate-proxy] POST {target} model={model} stream={stream} [command-code]", file=sys.stderr)
         req = urllib.request.Request(