fix: use strict=False for JSON parsing of tool calls and session data

LLM responses sometimes contain raw control characters (newlines,
tabs) inside JSON string values in tool call arguments. With the
default strict=True, json.loads() rejects these, causing tool call
failures and corrupting the session context file so it can never
be restored.

Use strict=False in all critical JSON parsing paths:
- Tool call argument parsing (toolset.py)
- Session context restore and checkpoint revert (context.py)
- Tool argument extraction for display (tools/__init__.py)
- Debug tool call formatting (debug.py)

Fixes #1378

Author: Br1an67

src/kimi_cli/soul/context.py

@@ -38,7 +38,7 @@ async def restore(self) -> bool:
             async for line in f:
                 if not line.strip():
                     continue
-                line_json = json.loads(line)
+                line_json = json.loads(line, strict=False)
                 if line_json["role"] == "_system_prompt":
                     self._system_prompt = line_json["content"]
                     continue
@@ -154,7 +154,7 @@ async def revert_to(self, checkpoint_id: int):
                 if not line.strip():
                     continue
 
-                line_json = json.loads(line)
+                line_json = json.loads(line, strict=False)
                 if line_json["role"] == "_checkpoint" and line_json["id"] == checkpoint_id:
                     break
 

src/kimi_cli/soul/toolset.py

@@ -120,7 +120,7 @@ def handle(self, tool_call: ToolCall) -> HandleResult:
             tool = self._tool_dict[tool_call.function.name]
 
             try:
-                arguments: JsonType = json.loads(tool_call.function.arguments or "{}")
+                arguments: JsonType = json.loads(tool_call.function.arguments or "{}", strict=False)
             except json.JSONDecodeError as e:
                 return ToolResult(tool_call_id=tool_call.id, return_value=ToolParseError(str(e)))
 

src/kimi_cli/tools/__init__.py

@@ -20,7 +20,7 @@ def extract_key_argument(json_content: str | streamingjson.Lexer, tool_name: str
     else:
         json_str = json_content
     try:
-        curr_args: JsonType = json.loads(json_str)
+        curr_args: JsonType = json.loads(json_str, strict=False)
     except json.JSONDecodeError:
         return None
     if not curr_args:

src/kimi_cli/ui/shell/debug.py

@@ -70,7 +70,7 @@ def _format_tool_call(tool_call: ToolCall) -> Panel:
     """Format a tool call."""
     args = tool_call.function.arguments or "{}"
     try:
-        args_formatted = json.dumps(json.loads(args), indent=2)
+        args_formatted = json.dumps(json.loads(args, strict=False), indent=2)
         args_syntax = Syntax(args_formatted, "json", theme="monokai", padding=(0, 1))
     except json.JSONDecodeError:
         args_syntax = Text(args, style="red")