Enable session persistence with --continue and instruct model to complete tool loops fully

opencode_llm.py

@@ -92,6 +92,7 @@ class OpenCodeLLM(FrameProcessor):
         self._turn_task: asyncio.Task | None = None
         self._history: list[dict[str, str]] = []
         self._cli_path = find_opencode_cli() or "opencode"
+        self._has_session = False
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
         await super().process_frame(frame, direction)
@@ -154,19 +155,27 @@ class OpenCodeLLM(FrameProcessor):
         await self.push_frame(LLMFullResponseStartFrame())
         chunks: list[str] = []
 
+        # Use --continue for subsequent turns to persist tool session state
+        cmd = [
+            self._cli_path,
+            "run",
+            "-m", self._model,
+            "--dir", str(self._cwd),
+            "--auto",
+        ]
+        if self._has_session:
+            cmd.append("--continue")
+        cmd.append(prompt_str)
+
         try:
             proc = await asyncio.create_subprocess_exec(
-                self._cli_path,
-                "run",
-                "-m", self._model,
-                "--dir", str(self._cwd),
-                "--auto",
-                prompt_str,
+                *cmd,
                 stdout=asyncio.subprocess.PIPE,
                 stderr=asyncio.subprocess.PIPE,
                 stdin=asyncio.subprocess.DEVNULL,
                 cwd=str(self._cwd),
             )
+            self._has_session = True
 
             async def _read_stderr(stream):
                 while True: