chore: final pre-submission polish for JOSS

- Add CITATION.cff for GitHub citation support and Zenodo/JOSS integration
- Fix ossim reference URL in references.bib (was pointing to unrelated repo)
- Remove broken favicon reference from index.html (no public/ directory exists)
- Add meta description to index.html
- Fix sidebar title inconsistency: "Process Simulator" → "Process Scheduler Simulator"
- Rebuild dist.tar.gz with production assets

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

index.html

@@ -1,9 +1,9 @@
 <!doctype html>
-<html lang="pt-BR">
+<html lang="en">
   <head>
     <meta charset="UTF-8" />
-    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta name="description" content="Process Scheduler Simulator — interactive browser-based tool for visualizing CPU scheduling algorithms" />
     <title>Process Scheduler Simulator</title>
   </head>
   <body class="bg-slate-900 text-slate-100 antialiased overflow-hidden selection:bg-blue-500/30">