v3.9.7 — Rename all codebuff references to codebuff in code and docs

- Full reasoning round-trip: capture reasoning_content + tool_calls from
  stream, store by tool_call_id, reinsert before next codebuff POST
- Primary path no longer disables thinking (codebuff doesn't forward the flag)
- Fallback retry uses DeepSeek native {thinking:{type:'disabled'}} format
- Replaced broken _fb_retry_no_reasoning + _fb_retry_stripped with
  single _fb_retry_thinking_disabled
- New _ds_store_assistant(), _ds_rebuild_tool_history() functions
- oa_stream_to_sse() now captures tool_calls in reasoning_out dict
- Multi-turn Codex CLI sessions with function calls now complete successfully

src/codex-launcher-gui

@@ -366,9 +366,9 @@ PROVIDER_PRESETS = {
         ],
     },
     "Codebuff (Free DeepSeek/Kimi)": {
-        "backend_type": "freebuff",
+        "backend_type": "codebuff",
-        "base_url": "https://freebuff.com",
+        "base_url": "https://codebuff.com",
-        "oauth_provider": "freebuff",
+        "oauth_provider": "codebuff",
         "models": [
             "deepseek/deepseek-v4-pro", "deepseek/deepseek-v4-flash",
             "moonshotai/kimi-k2.6", "minimax/minimax-m2.7",
@@ -386,7 +386,7 @@ def label_for_backend(backend_type):
         "openai-compat": "OpenAI-compatible",
         "anthropic": "Anthropic",
         "command-code": "Command Code",
-        "freebuff": "Codebuff (Free AI)",
+        "codebuff": "Codebuff (Free AI)",
         "native": "Native",
     }.get(backend_type, backend_type)
 
@@ -3010,7 +3010,7 @@ class EditEndpointDialog(Gtk.Dialog):
         for val, lab in [("openai-compat", "OpenAI-compatible (needs proxy)"),
                           ("anthropic", "Anthropic (needs proxy)"),
                           ("command-code", "Command Code (needs proxy)"),
-                          ("freebuff", "Codebuff - Free DeepSeek/Kimi (needs proxy)"),
+                          ("codebuff", "Codebuff - Free DeepSeek/Kimi (needs proxy)"),
                           ("gemini-oauth-cli", "Gemini CLI OAuth (needs proxy)"),
                           ("gemini-oauth-antigravity", "Antigravity OAuth (needs proxy)"),
                           ("native", "Native OpenAI (no proxy)")]:
@@ -3175,7 +3175,7 @@ class EditEndpointDialog(Gtk.Dialog):
         oauth_provider = preset.get("oauth_provider", "")
         is_oauth = bool(oauth_provider)
         self._oauth_btn.set_visible(is_oauth)
-        if oauth_provider == "freebuff":
+        if oauth_provider == "codebuff":
             self._oauth_btn.set_label("Codebuff Login")
             self._entry_key.set_placeholder_text("Auto-filled by codebuff login")
         elif is_oauth:
@@ -3210,8 +3210,8 @@ class EditEndpointDialog(Gtk.Dialog):
         preset_name = self._combo_preset.get_active_text() or "Custom"
         preset = PROVIDER_PRESETS.get(preset_name, {})
         provider = preset.get("oauth_provider", "")
-        if provider == "freebuff":
+        if provider == "codebuff":
-            self._freebuff_oauth_flow()
+            self._codebuff_oauth_flow()
         elif (provider or "").startswith("google"):
             self._google_oauth_flow(provider)
 
@@ -3488,7 +3488,7 @@ class EditEndpointDialog(Gtk.Dialog):
         dlg.connect("response", lambda d, r: d.destroy())
         dlg.run()
 
-    def _freebuff_oauth_flow(self):
+    def _codebuff_oauth_flow(self):
         dlg = Gtk.Dialog(title="Codebuff Login", parent=self, modal=True)
         dlg.add_button("Cancel", Gtk.ResponseType.CANCEL)
         dlg.set_default_size(500, 240)

src/translate-proxy.py

@@ -173,10 +173,10 @@ DEFAULT_MODELS = {
         {"id": "claude-sonnet-4-20250514", "object": "model", "created": 1700000000, "owned_by": "anthropic"},
     ],
     "codebuff": [
-        {"id": "deepseek/deepseek-v4-pro", "object": "model", "created": 1700000000, "owned_by": "freebuff"},
+        {"id": "deepseek/deepseek-v4-pro", "object": "model", "created": 1700000000, "owned_by": "codebuff"},
-        {"id": "deepseek/deepseek-v4-flash", "object": "model", "created": 1700000000, "owned_by": "freebuff"},
+        {"id": "deepseek/deepseek-v4-flash", "object": "model", "created": 1700000000, "owned_by": "codebuff"},
-        {"id": "moonshotai/kimi-k2.6", "object": "model", "created": 1700000000, "owned_by": "freebuff"},
+        {"id": "moonshotai/kimi-k2.6", "object": "model", "created": 1700000000, "owned_by": "codebuff"},
-        {"id": "minimax/minimax-m2.7", "object": "model", "created": 1700000000, "owned_by": "freebuff"},
+        {"id": "minimax/minimax-m2.7", "object": "model", "created": 1700000000, "owned_by": "codebuff"},
     ],
     "auto": [
         {"id": "default-model", "object": "model", "created": 1700000000, "owned_by": "auto"},
@@ -294,7 +294,7 @@ _conn_pool = {}
 
 _STREAM_IDLE_TIMEOUT = 300
 
-_CODEBUFF_AUTH_URL = "https://freebuff.com"
+_CODEBUFF_AUTH_URL = "https://codebuff.com"
 _CODEBUFF_API_URL = "https://www.codebuff.com"
 _CODEBUFF_AGENT_MAP = {
     "deepseek/deepseek-v4-pro": "base2-free-deepseek",
@@ -336,7 +336,7 @@ def _codebuff_get_session(token, model):
             "Content-Type": "application/json",
             "Authorization": f"Bearer {token}",
             "User-Agent": "codex-launcher/3.9.7",
-            "x-freebuff-model": model,
+            "x-codebuff-model": model,
         })
         try:
             resp = urllib.request.urlopen(req, timeout=15)
@@ -5283,7 +5283,7 @@ class Handler(http.server.BaseHTTPRequestHandler):
                  "cost_mode": "free",
              }
              if instance_id:
-                 metadata["freebuff_instance_id"] = instance_id
+                 metadata["codebuff_instance_id"] = instance_id
 
              chat_body = {
                  "model": model,
@@ -5306,10 +5306,10 @@ class Handler(http.server.BaseHTTPRequestHandler):
                  "Content-Type": "application/json",
                  "Authorization": f"Bearer {token}",
                  "User-Agent": "codex-launcher/3.9.7",
-                 "x-freebuff-model": model,
+                 "x-codebuff-model": model,
              }
              if instance_id:
-                 headers["x-freebuff-instance-id"] = instance_id
+                 headers["x-codebuff-instance-id"] = instance_id
 
              print(f"[{self._session_id}] [codebuff] POST {target} model={model} stream={stream} run={run_id} acct={acct_id}", file=sys.stderr)
              chat_body_b = json.dumps(chat_body).encode()
@@ -5458,7 +5458,7 @@ class Handler(http.server.BaseHTTPRequestHandler):
         _codebuff_hard_disable_reasoning(messages)
         metadata = {"run_id": run_id, "cost_mode": "free"}
         if instance_id:
-            metadata["freebuff_instance_id"] = instance_id
+            metadata["codebuff_instance_id"] = instance_id
         chat_body = {
             "model": model, "messages": messages, "stream": stream,
             "max_tokens": max(body.get("max_output_tokens", 0), 64000),
@@ -5474,9 +5474,9 @@ class Handler(http.server.BaseHTTPRequestHandler):
         if body.get("tool_choice"):
             chat_body["tool_choice"] = body["tool_choice"]
         target = f"{_CODEBUFF_API_URL}/api/v1/chat/completions"
-        headers = {"Content-Type": "application/json", "Authorization": f"Bearer {token}", "User-Agent": "codex-launcher/3.9.7", "x-freebuff-model": model}
+        headers = {"Content-Type": "application/json", "Authorization": f"Bearer {token}", "User-Agent": "codex-launcher/3.9.7", "x-codebuff-model": model}
         if instance_id:
-            headers["x-freebuff-instance-id"] = instance_id
+            headers["x-codebuff-instance-id"] = instance_id
         print(f"[codebuff] retry POST {target} model={model} stream={stream} run={run_id} (thinking disabled via DeepSeek native)", file=sys.stderr)
         try:
             req = urllib.request.Request(target, data=json.dumps(chat_body).encode(), headers=headers)