chore(python): audit providers kirocli kiroide opencode

Move Kiro IDE onto _runtime and _shell_command, share kirocli file
helpers through _file_io, and clean temp files on any interruption.

Claude-Session: https://claude.ai/code/session_01Agoc9bRVE9KL7mmWtey9Vq

elydora/plugins/_file_io.py

@@ -4,14 +4,15 @@ from __future__ import annotations
 
 import json
 import os
+import stat
 import tempfile
-from typing import Any, Dict
+from typing import Any, Dict, Optional
 
 
 JsonObject = Dict[str, Any]
 
 
-def _cleanup_failed_write(path: str, label: str, cause: Exception) -> None:
+def _cleanup_failed_write(path: str, label: str, cause: BaseException) -> None:
     if not path:
         return
     try:
@@ -47,7 +48,7 @@ def write_text_atomic(path: str, content: str, mode: int, label: str) -> None:
             os.fsync(file.fileno())
         os.chmod(temporary_path, mode)
         os.replace(temporary_path, path)
-    except Exception as error:
+    except BaseException as error:
         if descriptor >= 0:
             try:
                 os.close(descriptor)
@@ -58,8 +59,46 @@ def write_text_atomic(path: str, content: str, mode: int, label: str) -> None:
                     f"close failed: {close_error}"
                 ) from error
         _cleanup_failed_write(temporary_path, label, error)
-        raise OSError(f"Write {label} at {path}: {error}") from error
+        if isinstance(error, Exception):
+            raise OSError(f"Write {label} at {path}: {error}") from error
+        raise
 
 
 def write_json_atomic(path: str, value: JsonObject, mode: int, label: str) -> None:
     write_text_atomic(path, json.dumps(value, indent=2) + "\n", mode, label)
+
+
+def read_json(path: str, label: str) -> Optional[JsonObject]:
+    try:
+        with open(path, "r", encoding="utf-8") as file:
+            raw = file.read()
+    except FileNotFoundError:
+        return None
+    except OSError as error:
+        raise OSError(f"Read {label} at {path}: {error}") from error
+    try:
+        value = json.loads(raw)
+    except json.JSONDecodeError as error:
+        raise ValueError(f"Failed to parse {label} at {path}: {error}") from error
+    if not isinstance(value, dict):
+        raise ValueError(f"{label} at {path} must contain a JSON object")
+    return value
+
+
+def remove_file(path: str, label: str) -> None:
+    try:
+        os.remove(path)
+    except FileNotFoundError:
+        return
+    except OSError as error:
+        raise OSError(f"Remove {label} at {path}: {error}") from error
+
+
+def regular_file_exists(path: str, label: str) -> bool:
+    try:
+        metadata = os.stat(path)
+    except FileNotFoundError:
+        return False
+    except OSError as error:
+        raise OSError(f"Read {label} at {path}: {error}") from error
+    return stat.S_ISREG(metadata.st_mode)