fix: PHP upload limits, import error dialog, earlier footer breakpoint

- Set upload_max_filesize=64M and display_errors=0 for Electron PHP
- Import shows error dialog instead of silently failing
- Footer count repositions at 1450px instead of 1250px

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

electron/main.js

@@ -118,6 +118,9 @@ async function startPhpServer() {
     console.log('[hyprcrd] port:', serverPort);
 
     phpProcess = spawn(phpBin, [
+        '-d', 'upload_max_filesize=64M',
+        '-d', 'post_max_size=66M',
+        '-d', 'display_errors=0',
         '-S', `127.0.0.1:${serverPort}`,
         '-t', docRoot,
         routerFile,