Method writeGraphFile

frontend/src/cache.ts:213–225

* Write the merged graph to a standalone JSON file for external consumers (e.g., MCP server).

(graph: WorkflowGraph | null)

     * Write the merged graph to a standalone JSON file for external consumers (e.g., MCP server).
     */
    private async writeGraphFile(graph: WorkflowGraph | null): Promise<void> {
        if (!this.graphPath) return;
        try {
            if (graph) {
                const content = JSON.stringify(graph, null, 2);
                await vscode.workspace.fs.writeFile(this.graphPath, Buffer.from(content, 'utf8'));
            } else {
                try { await vscode.workspace.fs.delete(this.graphPath); } catch { /* may not exist */ }
            }
        } catch (error) {
            console.error('Failed to write graph file:', error);
        }
    }

    /**
     * Force immediate save of any pending changes.