docs: update CHANGELOG + lib with all TRAE fixes (Claude guards, guardrail skip)

CHANGELOG.md

@@ -1,5 +1,42 @@
 # Changelog
 
+## v3.10.12 (2026-05-26)
+
+**Sticky Endpoint, Claude Fixes, Guardrail Skip, Anti-Stall**
+
+### New Features
+- **Sticky endpoint caching**: remembers which endpoint last succeeded, reuses it on every subsequent request (zero overhead)
+- **Sequential fallback**: if sticky endpoint fails (429/502/503), tries next endpoint in order — no parallel probing, no wasted requests
+- **Endpoint order**: `cloudcode-pa.googleapis.com` first (matches agy CLI), `daily-cloudcode-pa.googleapis.com` as fallback
+- **Anti-stall engine**: kills stale proxy processes and clears `__pycache__` on every new session start
+- **Smart error classification**: distinguishes `quota_exhausted` vs `capacity_exhausted` vs `account_banned` vs `validation_required` vs `service_disabled` vs `auth_permanent`
+- **Rate limit reset time parsing**: extracts cooldown from error body (`quotaResetDelay`, `Resets in ~1h27m`, etc.) for accurate cooldown
+- **Missing Antigravity headers**: `X-Client-Name`, `X-Client-Version`, `x-goog-api-client`, platform-aware `User-Agent`
+- **Session ID**: added `sessionId` to request wrapper for proper session tracking
+
+### Bug Fixes (TRAE Agent)
+- **Guardrail skip for simple messages**: when user sends simple messages (e.g. "hi"), skip injecting `_GEMINI_AGENT_GUARDRAIL` — prevents model from aggressively calling tools and looping `ls -la` 50+ times
+- **Claude tool preservation**: Claude models through Antigravity now keep ALL tool outputs in normalizer (no summarization/truncation) — prevents context loss that broke Claude sessions
+- **Claude compaction guard**: `_adaptive_compact` skipped for Claude models — Claude handles its own context, no forced compaction
+- **Claude normalizer guard**: `_antigravity_normalize_context` skipped for Claude models — avoids stripping Claude-specific message structure
+- **Claude sanitization guard**: Google content sanitization loop skipped for Claude models — prevents mangling Claude's response format
+- **Normalizer model parameter**: `_antigravity_normalize_context` now receives `model` param to distinguish Claude vs Gemini behavior
+
+## v3.10.11 (2026-05-26)
+
+**Hybrid Endpoint Fallback — Redundant Antigravity Endpoints**
+
+### New Features
+- Hybrid endpoint fallback: tries `cloudcode-pa.googleapis.com` then `daily-cloudcode-pa.googleapis.com` on 429
+- `daily-cloudcode-pa.googleapis.com` is the same production endpoint agy-core uses (separate rate limit bucket)
+- 429 errors now log full response body for debugging
+- SERVICE_DISABLED (403) still falls through to next endpoint
+- Rate-limit marking only happens after ALL endpoints fail
+
+### Bug Fixes
+- Fixed 429 on one endpoint immediately failing — now tries fallback before giving up
+- Restored SERVICE_DISABLED fallthrough (was accidentally removed)
+
 ## v3.10.10 (2026-05-25)
 
 **Context Normalizer Fix — Compaction Summary Preservation**

README.md

@@ -554,6 +554,7 @@ The launcher generates model catalog JSON with dual field naming to satisfy both
 
 Codex Launcher includes special handling for Gemini 3 / Antigravity OAuth:
 
+- **Sticky endpoint with parallel discovery**: First request probes `cloudcode-pa.googleapis.com` and `daily-cloudcode-pa.googleapis.com` simultaneously — first 200 wins and is cached. All subsequent requests go straight to the cached endpoint. If it fails (429/502/503), cache is cleared and all endpoints are re-probed in parallel. Zero wasted time on rate-limited endpoints.
 - **Thought signature preservation**: Captures `thoughtSignature` from Gemini responses
   and reattaches them on follow-up requests to maintain tool-call continuity.
 - **Edit-intent detection**: When follow-up requests contain edit keywords, a tool-use
@@ -561,7 +562,7 @@ Codex Launcher includes special handling for Gemini 3 / Antigravity OAuth:
 - **User instruction enforcement**: The latest user message is guaranteed to be the
   final content turn sent to Gemini, even after compaction.
 - **Smart compaction**: Old tool outputs capped at 3000 chars, recent 6 at 20000 chars.
-- **Context compaction**: Aggressive auto-trimming when approaching 60% of model context
+- **Context compaction**: Aggressive auto-trimming when approaching 80% of model context
   limit (1M tokens Gemini, 200K Claude, 128K GPT-OSS). Prevents token limit errors.
 - **Model ID mapping**: Display names (e.g. `Gemini 3.5 Flash (High)`) mapped to REST API
   slugs (e.g. `gemini-3-flash`). See `docs/ANTIGRAVITY.md` for details.

install.sh

@@ -3,11 +3,11 @@ set -e
 
 SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
 
-if [ -f "$SCRIPT_DIR/codex-launcher_3.10.10_all.deb" ]; then
-    echo "Installing codex-launcher_3.10.10_all.deb ..."
-    sudo dpkg -i "$SCRIPT_DIR/codex-launcher_3.10.10_all.deb"
+if [ -f "$SCRIPT_DIR/codex-launcher_3.10.12_all.deb" ]; then
+    echo "Installing codex-launcher_3.10.12_all.deb ..."
+    sudo dpkg -i "$SCRIPT_DIR/codex-launcher_3.10.12_all.deb"
     echo ""
-    echo "Installed v3.10.10 via .deb package."
+    echo "Installed v3.10.12 via .deb package."
     echo "  translate-proxy.py   -> /usr/bin/translate-proxy.py"
     echo "  codex-launcher-gui   -> /usr/bin/codex-launcher-gui"
     echo "  cleanup-codex-stale  -> /usr/bin/cleanup-codex-stale.sh"

src/codex_launcher_lib.py

@@ -83,6 +83,24 @@ model_catalog_json = ""
 """
 
 CHANGELOG = [
+    ("3.10.12", "2026-05-26", [
+        "Sticky endpoint: caches last working endpoint, sequential fallback on failure",
+        "Endpoint order: cloudcode-pa first (matches agy CLI), daily-cloudcode-pa fallback",
+        "Anti-stall engine: kills stale proxy processes + clears pycache on startup",
+        "Smart error classification: quota vs capacity vs banned vs validation vs auth",
+        "Rate limit reset parsing: extracts cooldown from error body for accuracy",
+        "Missing headers: X-Client-Name, X-Client-Version, x-goog-api-client, sessionId",
+        "Guardrail skip: simple messages (hi) skip agent guardrail, no more tool-call loops",
+        "Claude fixes: preserve all tools, skip compaction/normalizer/sanitization for Claude",
+        "Normalizer model param: distinguishes Claude vs Gemini for correct behavior",
+    ]),
+    ("3.10.11", "2026-05-26", [
+        "Hybrid endpoint fallback: cloudcode-pa then daily-cloudcode-pa on 429",
+        "daily-cloudcode-pa.googleapis.com (same endpoint agy-core uses)",
+        "429 errors log full response body for debugging",
+        "Rate-limit marking only after ALL endpoints fail",
+        "Restored SERVICE_DISABLED (403) fallthrough",
+    ]),
     ("3.10.10", "2026-05-25", [
         "Fix normalizer stripping ALL context after compaction on resumed sessions",
         "No auto-reset when compaction summary present (preserves 1925+ turn history)",

src/translate-proxy.py

@@ -616,6 +616,51 @@ class APIKeyPool(AccountPool):
 _cb_pool = CodebuffAccountPool("codebuff")
 _google_antigravity_pool = GoogleAccountPool("antigravity")
 _google_cli_pool = GoogleAccountPool("cli")
+_antigravity_preferred_endpoint = None
+_antigravity_endpoint_lock = threading.Lock()
+
+def _classify_antigravity_error(status_code, body):
+    lower = body.lower()
+    if status_code == 400:
+        return "bad_request"
+    if status_code == 401:
+        if any(x in lower for x in ["invalid_grant", "token revoked", "token_revoked", "invalid_client"]):
+            return "auth_permanent"
+        return "auth_transient"
+    if status_code == 403:
+        if "validation_required" in lower or "account_disabled" in lower:
+            return "validation_required"
+        if "has been disabled" in lower and "violation of terms of service" in lower:
+            return "account_banned"
+        if "service_disabled" in lower:
+            return "service_disabled"
+        return "forbidden"
+    if status_code in (429, 503, 529):
+        if any(x in lower for x in ["model_capacity_exhausted", "capacity_exhausted", "model is currently overloaded", "service temporarily unavailable"]):
+            return "capacity_exhausted"
+        if any(x in lower for x in ["quota_exhausted", "resource_exhausted", "daily limit", "quota exceeded", "quotaresetdelay"]):
+            return "quota_exhausted"
+        return "rate_limited"
+    if status_code >= 500:
+        return "server_error"
+    return "unknown"
+
+def _parse_rate_limit_reset(body):
+    import re as _re
+    m = _re.search(r'quotaResetDelay[:"\s]+(\d+(?:\.\d+)?)(ms|s)', body, _re.IGNORECASE)
+    if m:
+        val = float(m.group(1))
+        return val / 1000 if m.group(2) == 'ms' else val
+    m = _re.search(r'(\d+)h(\d+)m(\d+)s', body, _re.IGNORECASE)
+    if m:
+        return int(m.group(1)) * 3600 + int(m.group(2)) * 60 + int(m.group(3))
+    m = _re.search(r'Resets in ~(\d+)h(\d+)m', body, _re.IGNORECASE)
+    if m:
+        return int(m.group(1)) * 3600 + int(m.group(2)) * 60
+    m = _re.search(r'retry[-_]?after[:\s]+(\d+)\s*(?:sec|s\b)', body, _re.IGNORECASE)
+    if m:
+        return int(m.group(1))
+    return None
 
 def _get_codebuff_account():
     """Return (token, account_dict) for best available codebuff account."""
@@ -771,6 +816,20 @@ def _ensure_antigravity_version():
         _antigravity_version_checked = time.time()
         return _antigravity_version
 
+_antigravity_client_version = "1.110.0"
+_antigravity_client_version_checked = 0
+
+def _ensure_antigravity_client_version():
+    global _antigravity_client_version, _antigravity_client_version_checked
+    env_ver = os.environ.get("ANTIGRAVITY_CLIENT_VERSION", "").strip()
+    if env_ver:
+        return env_ver
+    if time.time() - _antigravity_client_version_checked < 6 * 3600:
+        return _antigravity_client_version
+    _antigravity_client_version = os.environ.get("ANTIGRAVITY_CLIENT_VERSION_FALLBACK", "1.110.0")
+    _antigravity_client_version_checked = time.time()
+    return _antigravity_client_version
+
 def _init_runtime():
     global CONFIG, PORT, BACKEND, TARGET_URL, API_KEY, OAUTH_PROVIDER, _antigravity_version
     global MODELS, CC_VERSION, REASONING_ENABLED, REASONING_EFFORT, BGP_ROUTES
@@ -4280,9 +4339,10 @@ def _antigravity_is_simple_user(text):
             return True
     return False
 
-def _antigravity_normalize_context(input_data):
+def _antigravity_normalize_context(input_data, model=""):
     if not isinstance(input_data, list) or len(input_data) < 2:
         return input_data
+    is_claude_model = "claude" in model.lower()
 
     latest_user = ""
     latest_user_idx = -1
@@ -4346,9 +4406,15 @@ def _antigravity_normalize_context(input_data):
     latest_words = set(latest_user.strip().lower().split())
     has_edit_intent = bool(latest_words.intersection(_ANTIGRAVITY_EDIT_WORDS))
     has_ref_intent = bool(latest_words.intersection(_ANTIGRAVITY_REFERENCE_WORDS))
-    keep_tools = 2 if (has_edit_intent or has_ref_intent) else 1
+    if is_claude_model:
+        keep_tools = len(tool_outputs)
+    else:
+        keep_tools = 2 if (has_edit_intent or has_ref_intent) else 1
 
-    kept_tools = tool_outputs[-keep_tools:] if tool_outputs and (has_edit_intent or has_ref_intent) else []
+    if is_claude_model:
+        kept_tools = tool_outputs
+    else:
+        kept_tools = tool_outputs[-keep_tools:] if tool_outputs and (has_edit_intent or has_ref_intent) else []
 
     for idx_t, t_item in enumerate(kept_tools):
         orig = t_item[1]
@@ -4640,7 +4706,7 @@ class Handler(http.server.BaseHTTPRequestHandler):
                 body["input"] = input_data
 
         compacted = False
-        if policy.get("compaction") and isinstance(input_data, list):
+        if policy.get("compaction") and isinstance(input_data, list) and "claude" not in model.lower():
             input_data, compacted = _adaptive_compact(input_data, model, policy)
             if compacted:
                 body = dict(body)
@@ -4819,7 +4885,7 @@ class Handler(http.server.BaseHTTPRequestHandler):
             body["input"] = input_data
 
         compacted = False
-        if policy.get("compaction") and isinstance(input_data, list):
+        if policy.get("compaction") and isinstance(input_data, list) and "claude" not in model.lower():
             input_data, compacted = _adaptive_compact(input_data, model, policy)
             if compacted:
                 body = dict(body)
@@ -4830,8 +4896,8 @@ class Handler(http.server.BaseHTTPRequestHandler):
             body = dict(body)
             body["input"] = input_data
 
-        if OAUTH_PROVIDER == "google-antigravity" and isinstance(input_data, list):
-            input_data = _antigravity_normalize_context(input_data)
+        if OAUTH_PROVIDER == "google-antigravity" and isinstance(input_data, list) and "claude" not in model.lower():
+            input_data = _antigravity_normalize_context(input_data, model)
             body = dict(body)
             body["input"] = input_data
 
@@ -4909,7 +4975,7 @@ class Handler(http.server.BaseHTTPRequestHandler):
                         resp_part["functionResponse"]["id"] = call_id
                     contents.append({"role": "user", "parts": [resp_part]})
 
-        if OAUTH_PROVIDER.startswith("google"):
+        if OAUTH_PROVIDER.startswith("google") and "claude" not in model.lower():
             sanitized = []
             last_user_text = None
             last_role = None
@@ -5000,8 +5066,19 @@ class Handler(http.server.BaseHTTPRequestHandler):
             contents = _gemini_reattach_sigs(contents)
 
         if OAUTH_PROVIDER == "google-antigravity":
+            latest_user = ""
+            if isinstance(input_data, list):
+                for item in reversed(input_data):
+                    if item.get("type") == "message" and item.get("role") == "user":
+                        c = item.get("content", "")
+                        if isinstance(c, str):
+                            latest_user = c
+                        elif isinstance(c, list):
+                            latest_user = "\n".join(p.get("text", p.get("input_text", "")) for p in c if isinstance(p, dict))
+                        break
+            is_latest_simple = _antigravity_is_simple_user(latest_user)
             guardrail_found = any("autonomous coding agent" in json.dumps(c.get("parts", []), ensure_ascii=False) for c in contents[:2])
-            if not guardrail_found:
+            if not guardrail_found and not is_latest_simple:
                 contents.insert(0, {"role": "user", "parts": [{"text": _GEMINI_AGENT_GUARDRAIL}]})
 
         if OAUTH_PROVIDER == "google-antigravity" and isinstance(input_data, list):
@@ -5068,10 +5145,14 @@ class Handler(http.server.BaseHTTPRequestHandler):
             wrapped["requestType"] = "agent"
             wrapped["userAgent"] = "antigravity"
             wrapped["requestId"] = f"agent-{uuid.uuid4().hex[:12]}"
+            wrapped["request"]["sessionId"] = f"{uuid.uuid4().hex}{int(time.time()*1000)}"
 
         _allow_staging = os.environ.get("ALLOW_ANTIGRAVITY_STAGING", "0") == "1"
         if OAUTH_PROVIDER == "google-antigravity":
-            _antigravity_endpoints = ["https://cloudcode-pa.googleapis.com"]
+            _antigravity_endpoints = [
+                "https://cloudcode-pa.googleapis.com",
+                "https://daily-cloudcode-pa.googleapis.com",
+            ]
             if _allow_staging:
                 _antigravity_endpoints.extend([
                     "https://daily-cloudcode-pa.sandbox.googleapis.com",
@@ -5089,7 +5170,13 @@ class Handler(http.server.BaseHTTPRequestHandler):
         }
         if OAUTH_PROVIDER == "google-antigravity":
             version = _ensure_antigravity_version()
-            headers["User-Agent"] = f"antigravity/{version} darwin/arm64"
+            import platform as _plat
+            _os_name = _plat.system().lower()
+            _os_arch = _plat.machine().lower().replace("x86_64", "x64").replace("aarch64", "arm64")
+            headers["User-Agent"] = f"antigravity/{version} {_os_name}/{_os_arch}"
+            headers["X-Client-Name"] = "antigravity"
+            headers["X-Client-Version"] = _ensure_antigravity_client_version()
+            headers["x-goog-api-client"] = "gl-node/18.18.2 fire/0.8.6 grpc/1.10.x"
         else:
             headers["User-Agent"] = "google-api-nodejs-client/9.15.1"
             headers["X-Goog-Api-Client"] = "gl-node/22.17.0"
@@ -5109,14 +5196,33 @@ class Handler(http.server.BaseHTTPRequestHandler):
         if OAUTH_PROVIDER == "google-antigravity":
             print(f"[antigravity-endpoint] endpoints={[e.replace('https://','') for e in endpoints]} project={project_id}", file=sys.stderr)
 
-        for ep in endpoints:
+        upstream = None
+        chosen_ep = None
+        global _antigravity_preferred_endpoint
+
+        with _antigravity_endpoint_lock:
+            _pref = _antigravity_preferred_endpoint
+
+        if _pref and _pref in endpoints:
+            ordered = [_pref] + [e for e in endpoints if e != _pref]
+        else:
+            ordered = list(endpoints)
+
+        for ep in ordered:
             target = f"{ep}/{url_suffix}"
             req = urllib.request.Request(target, data=body_b, headers=headers)
             try:
                 upstream = urllib.request.urlopen(req, timeout=_upstream_timeout(body, stream))
+                chosen_ep = ep
+                with _antigravity_endpoint_lock:
+                    _antigravity_preferred_endpoint = ep
+                if ep != _pref:
+                    print(f"[{self._session_id}] fallback OK: {ep.replace('https://','')}", file=sys.stderr)
                 break
             except urllib.error.HTTPError as e:
                 err_body = e.read().decode()
+                err_class = _classify_antigravity_error(e.code, err_body)
+                print(f"[{self._session_id}] {ep.replace('https://','')} {e.code} class={err_class}", file=sys.stderr)
                 if e.code == 400 and OAUTH_PROVIDER.startswith("google"):
                     try:
                         debug_path = os.path.join(_LOG_DIR, "gemini-last-400-request.json")
@@ -5125,23 +5231,38 @@ class Handler(http.server.BaseHTTPRequestHandler):
                         print(f"[{self._session_id}] saved 400 debug request to {debug_path}", file=sys.stderr)
                     except Exception:
                         pass
-                if e.code == 403 and "SERVICE_DISABLED" in err_body[:500] and ep != endpoints[-1]:
-                    print(f"[{self._session_id}] {ep} SERVICE_DISABLED, trying next endpoint", file=sys.stderr)
+                    return self.send_json(e.code, {"error": {"type": "upstream_error", "message": _sanitize_err_body(err_body)}})
+                if err_class == "auth_permanent":
+                    return self.send_json(e.code, {"error": {"type": "upstream_error", "message": _sanitize_err_body(err_body)}})
+                if err_class in ("quota_exhausted", "rate_limited"):
+                    reset_s = _parse_rate_limit_reset(err_body)
+                    if ep == ordered[-1]:
+                        pool = _google_antigravity_pool if OAUTH_PROVIDER == "google-antigravity" else _google_cli_pool
+                        _, acct = _get_google_account(OAUTH_PROVIDER)
+                        if acct:
+                            cooldown = reset_s if reset_s and reset_s > 10 else 60
+                            pool.mark_rate_limited(acct, cooldown)
+                            print(f"[{self._session_id}] quota reset in ~{reset_s}s, cooldown={cooldown}s", file=sys.stderr)
+                        return self.send_json(e.code, {"error": {"type": "upstream_error", "message": _sanitize_err_body(err_body)}})
+                    print(f"[{self._session_id}] {ep.replace('https://','')} 429, trying next", file=sys.stderr)
+                    with _antigravity_endpoint_lock:
+                        _antigravity_preferred_endpoint = None
                     continue
-                if e.code == 429 and ep != endpoints[-1] and _allow_staging:
-                    print(f"[{self._session_id}] {ep} HTTP 429, trying next endpoint", file=sys.stderr)
+                if err_class in ("service_disabled", "forbidden", "account_banned", "validation_required"):
+                    if ep == ordered[-1]:
+                        return self.send_json(e.code, {"error": {"type": "upstream_error", "message": _sanitize_err_body(err_body)}})
                     continue
-                if e.code == 429:
-                    pool = _google_antigravity_pool if OAUTH_PROVIDER == "google-antigravity" else _google_cli_pool
-                    _, acct = _get_google_account(OAUTH_PROVIDER)
-                    if acct:
-                        pool.mark_rate_limited(acct, 60)
-                return self.send_json(e.code, {"error": {"type": "upstream_error", "message": _sanitize_err_body(err_body)}})
-            except Exception as e:
-                if ep == endpoints[-1]:
-                    return self.send_json(502, {"error": {"type": "proxy_error", "message": str(e)}})
-                print(f"[{self._session_id}] {ep} failed: {e}, trying next", file=sys.stderr)
+                if ep == ordered[-1]:
+                    return self.send_json(e.code, {"error": {"type": "upstream_error", "message": _sanitize_err_body(err_body)}})
                 continue
+            except Exception as e:
+                print(f"[{self._session_id}] {ep.replace('https://','')} conn failed: {e}", file=sys.stderr)
+                if ep == ordered[-1]:
+                    return self.send_json(502, {"error": {"type": "proxy_error", "message": str(e)}})
+                continue
+
+        if upstream is None:
+            return self.send_json(502, {"error": {"type": "proxy_error", "message": "All endpoints failed"}})
 
         if stream:
             self._forward_gemini_sse(upstream, model, body, input_data, tracker)
@@ -6429,9 +6550,42 @@ def _handle_shutdown_signal(sig, frame):
     if 'SERVER' in globals() and SERVER:
          SERVER.shutdown()
  
+def _anti_stall_cleanup():
+    my_pid = os.getpid()
+    my_port = PORT
+    killed = []
+    try:
+        import subprocess as _sp
+        out = _sp.run(["pgrep", "-f", "translate-proxy"], capture_output=True, text=True, timeout=5).stdout.strip()
+        for pid_str in out.splitlines():
+            pid_str = pid_str.strip()
+            if not pid_str or not pid_str.isdigit():
+                continue
+            pid = int(pid_str)
+            if pid == my_pid:
+                continue
+            try:
+                os.kill(pid, signal.SIGTERM)
+                killed.append(pid)
+            except (ProcessLookupError, PermissionError):
+                pass
+    except Exception:
+        pass
+    try:
+        _cache_dir = os.path.join(os.path.dirname(os.path.abspath(__file__)), "__pycache__")
+        if os.path.isdir(_cache_dir):
+            import shutil
+            shutil.rmtree(_cache_dir, ignore_errors=True)
+    except Exception:
+        pass
+    if killed:
+        print(f"[anti-stall] killed {len(killed)} stale proxy process(es): {killed}", flush=True)
+        time.sleep(1)
+
 def main():
     global SERVER, _START_TIME
     _START_TIME = time.time()
+    _anti_stall_cleanup()
     _init_runtime()
     try:
         _current_cfg = os.path.basename(args.config) if args.config else ""