fix(ci): template literal for biome lint, normalize mount paths for Windows

- Use template literal in setup.js to satisfy biome linter
- Normalize stored mount paths to forward slashes for cross-platform consistency

Author: AnExiledDev

cli/src/commands/mount/add.ts

@@ -38,7 +38,7 @@ export function registerMountAddCommand(parent: Command): void {
 			}
 
 			// Convert to relative path from workspace root
-			const relPath = relative(workspaceRoot, absPath);
+			const relPath = relative(workspaceRoot, absPath).replaceAll("\\", "/");
 			if (relPath.startsWith("..")) {
 				console.error(
 					`Error: path must be within workspace root (${workspaceRoot})`,

container/setup.js

@@ -479,7 +479,7 @@ function configApply() {
 
 	if (!fs.existsSync(defaultManifest)) {
 		console.error(
-			"Error: default file-manifest.json not found at " + defaultManifest,
+			`Error: default file-manifest.json not found at ${defaultManifest}`,
 		);
 		console.error("Are you in a CodeForge project directory?");
 		process.exit(1);