Fix HTML compile success check: size is undefined for non-PDF outputs

collectOutputPdfSize() only calls stat() and sets .size on output.pdf.
All other output files (including output.html) keep size: undefined.
The previous check required file.size > 0 for both PDF and HTML, so
undefined > 0 always evaluated false for output.html, making every
RevealJS compile report 'failure' even when the file was produced.

Fix: require size > 0 only for output.pdf; accept output.html
regardless of size (it is always non-empty if Quarto succeeded).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

services/clsi/app/js/CompileController.js

@@ -91,9 +91,8 @@ function compile(req, res, next) {
               if (
                 outputFiles.some(
                   file =>
-                    (file.path === 'output.pdf' ||
-                      file.path === 'output.html') &&
-                    file.size > 0
+                    (file.path === 'output.pdf' && file.size > 0) ||
+                    file.path === 'output.html'
                 )
               ) {
                 status = 'success'