Add settings option to ClaudeCodeOptions

Expose --settings CLI flag through ClaudeCodeOptions to allow
specifying custom settings configuration path.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/claude_code_sdk/_internal/transport/subprocess_cli.py

@@ -118,6 +118,9 @@ class SubprocessCLITransport(Transport):
         if self._options.resume:
             cmd.extend(["--resume", self._options.resume])
 
+        if self._options.settings:
+            cmd.extend(["--settings", self._options.settings])
+
         if self._options.mcp_servers:
             cmd.extend(
                 ["--mcp-config", json.dumps({"mcpServers": self._options.mcp_servers})]

src/claude_code_sdk/types.py

@@ -127,3 +127,4 @@ class ClaudeCodeOptions:
     model: str | None = None
     permission_prompt_tool_name: str | None = None
     cwd: str | Path | None = None
+    settings: str | None = None