feat: expand conversion matrix to everything-to-everything

- Documents: full cross-format (PDF, DOCX, HTML, MD, TXT, RTF) via pdfjs-dist, docx, mammoth, jsPDF, marked
- Images: add TIFF and ICO encoding (custom binary encoders for browser support)
- Data: add TOML support via smol-toml, all formats cross-convert
- Media: fix webm codec (VP8+Vorbis instead of libx264), expand video-to-audio extraction matrix
- Add missing MIME types (docx, rtf, toml, tiff, ico, opus, wma, flv, wmv, m4v)
- Remove unused pdf-lib dependency
- Fix pdfjs-dist TextItem type error with proper type guard

package.json

@@ -11,6 +11,7 @@
   "dependencies": {
     "@ffmpeg/ffmpeg": "^0.12.15",
     "@ffmpeg/util": "^0.12.2",
+    "docx": "^9.6.0",
     "fast-xml-parser": "^5.4.2",
     "framer-motion": "^12.35.2",
     "html2canvas-pro": "^2.0.2",
@@ -21,9 +22,10 @@
     "marked": "^17.0.4",
     "next": "16.1.6",
     "papaparse": "^5.5.3",
-    "pdf-lib": "^1.17.1",
+    "pdfjs-dist": "^5.5.207",
     "react": "19.2.3",
-    "react-dom": "19.2.3"
+    "react-dom": "19.2.3",
+    "smol-toml": "^1.6.0"
   },
   "devDependencies": {
     "@tailwindcss/postcss": "^4",