feat(codex-bridge): ship the local Codex bridge with the IDE

Adds the IDE's models and combos to Codex's model list and keeps conversation
summaries readable across providers, so switching models in Codex no longer
drops the conversation. Standard-library Python, run on the agent venv.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HRDGW1LiKcDUZYUdKBoWYW

apps/desktop/assets/codex-bridge/test_combo_tekrar.py

@@ -0,0 +1,96 @@
+"""A 9Router combo (Fusion-*) must not be sent twice once it may be running upstream.
+
+22 Sep 2026: after a Cloudflare 524 the bridge resent 9r/Fusion-Orta three times and the whole
+Fusion ran (and billed) again. Failures before the work starts may still be retried.
+"""
+import ast
+import io
+import json
+from pathlib import Path
+import types
+import unittest
+from unittest.mock import Mock
+import urllib.error
+import urllib.request
+
+source = ast.parse(Path(__file__).with_name("bridge.py").read_text(encoding="utf-8"))
+pick = lambda name: next(n for n in source.body if isinstance(n, ast.FunctionDef) and n.name == name)
+handler = next(n for n in source.body if isinstance(n, ast.ClassDef) and n.name == "H")
+responses = next(n for n in handler.body if isinstance(n, ast.FunctionDef) and n.name == "_responses")
+
+
+def http_error(code, body=b"{}"):
+    return urllib.error.HTTPError("https://example.invalid", code, "x", {}, io.BytesIO(body))
+
+
+class ComboNotResent(unittest.TestCase):
+    def setUp(self):
+        self.upstream = Mock()
+        self.env = {
+            "json": json, "re": __import__("re"), "os": __import__("os"),
+            "time": types.SimpleNamespace(sleep=lambda s: None),
+            "urllib": types.SimpleNamespace(
+                request=types.SimpleNamespace(Request=urllib.request.Request, urlopen=self.upstream),
+                error=urllib.error),
+            "decompress": lambda body, encoding: body,
+            "MODEL_MAP": {},
+            "CFG": {"nine_router_catalog": {"enabled": True, "route": "9router", "prefix": "9r/"},
+                    "resim_sadelestir": False, "pano_kanca_user": False},
+            "ROUTES": {"9router": {"url": "https://example.invalid/v1/responses", "key": "test-only", "flatten_tools": False}},
+            "fix_tool_ids": lambda req: 0, "drop_foreign_items": lambda req: 0,
+            "SseRewriter": Mock(), "log": lambda message: None,
+            "DEBUG": False, "UA": "test", "RETRIES": 6, "UPSTREAM_IDLE_TIMEOUT": 3600,
+            "NO_RETRY_PATTERNS": [],
+        }
+        exec(compile(ast.Module(body=[pick("flatten_request"), pick("claude_sonu_duzelt"), pick("is_timeout"), responses],
+                                type_ignores=[]), "bridge.py", "exec"), self.env)
+
+    def send(self, model):
+        body = json.dumps({"model": model, "input": [{"role": "user", "content": [{"type": "input_text", "text": "8 vezir"}]}]}).encode()
+        fake = Mock(headers={})
+        self.env["_responses"](fake, 1, "/responses", body)
+        return fake
+
+    def test_combo_timeout_is_not_resent(self):
+        self.upstream.side_effect = urllib.error.URLError(TimeoutError("timed out"))
+        fake = self.send("9r/Fusion-Orta")
+        self.assertEqual(self.upstream.call_count, 1)
+        fake._stream.assert_not_called()
+
+    def test_combo_504_and_524_are_not_resent(self):
+        for code in (504, 524):
+            with self.subTest(code=code):
+                self.upstream.reset_mock()
+                self.upstream.side_effect = http_error(code)
+                self.send("9r/Fusion-Agir")
+                self.assertEqual(self.upstream.call_count, 1)
+
+    def test_combo_cut_mid_stream_is_not_resent(self):
+        self.upstream.side_effect = None
+        self.upstream.return_value = Mock(status=200)
+        fake = self.send("9r/Fusion-Orta")
+        fake._stream.side_effect = TimeoutError("read timed out")
+        self.upstream.reset_mock()
+        with self.assertRaises(TimeoutError):
+            self.send_with(fake, "9r/Fusion-Orta")
+        self.assertEqual(self.upstream.call_count, 1)
+
+    def send_with(self, fake, model):
+        body = json.dumps({"model": model, "input": [{"role": "user", "content": [{"type": "input_text", "text": "8 vezir"}]}]}).encode()
+        self.env["_responses"](fake, 1, "/responses", body)
+
+    def test_combo_failure_before_work_starts_is_retried(self):
+        self.upstream.side_effect = [http_error(503), urllib.error.URLError(ConnectionRefusedError("refused")), Mock(status=200)]
+        fake = self.send("9r/Fusion-Orta")
+        self.assertEqual(self.upstream.call_count, 3)
+        fake._stream.assert_called_once()
+
+    def test_single_model_timeout_is_still_retried(self):
+        self.upstream.side_effect = [urllib.error.URLError(TimeoutError("timed out")), Mock(status=200)]
+        fake = self.send("9r/cc/claude-opus-5-5")
+        self.assertEqual(self.upstream.call_count, 2)
+        fake._stream.assert_called_once()
+
+
+if __name__ == "__main__":
+    unittest.main()