Restore codebase deleted by bad auto-commit e4227cf

Commit e4227cf (a story creation auto-commit) erroneously deleted 175
files from master's tree, likely due to a race condition between
concurrent git operations. This commit re-adds all files from the
working directory.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/types.ts

@@ -0,0 +1,80 @@
+export type Role = "system" | "user" | "assistant" | "tool";
+
+export interface ToolCall {
+	id?: string;
+	type: string;
+	function: {
+		name: string;
+		arguments: string;
+	};
+}
+
+export interface Message {
+	role: Role;
+	content: string;
+	tool_calls?: ToolCall[];
+	tool_call_id?: string;
+}
+
+export interface ProviderConfig {
+	provider: string;
+	model: string;
+	base_url?: string;
+	enable_tools?: boolean;
+	session_id?: string;
+}
+
+export interface FileEntry {
+	name: string;
+	kind: "file" | "dir";
+}
+
+export interface SearchResult {
+	path: string;
+	matches: number;
+}
+
+export interface CommandOutput {
+	stdout: string;
+	stderr: string;
+	exit_code: number;
+}
+
+export type WsRequest =
+	| {
+			type: "chat";
+			messages: Message[];
+			config: ProviderConfig;
+	  }
+	| {
+			type: "cancel";
+	  }
+	| {
+			type: "permission_response";
+			request_id: string;
+			approved: boolean;
+			always_allow: boolean;
+	  };
+
+export type WsResponse =
+	| { type: "token"; content: string }
+	| { type: "update"; messages: Message[] }
+	| { type: "session_id"; session_id: string }
+	| { type: "error"; message: string }
+	| {
+			type: "permission_request";
+			request_id: string;
+			tool_name: string;
+			tool_input: Record<string, unknown>;
+	  };
+
+// Re-export API client types for convenience
+export type {
+	Message as ApiMessage,
+	ProviderConfig as ApiProviderConfig,
+	FileEntry as ApiFileEntry,
+	SearchResult as ApiSearchResult,
+	CommandOutput as ApiCommandOutput,
+	WsRequest as ApiWsRequest,
+	WsResponse as ApiWsResponse,
+};