chore(release): prepare Firelink 1.4.0

Document the Torrent and Properties release, align desktop version metadata, and pin the published Companion 2.2.0.

src-tauri/tauri.conf.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "Firelink",
-  "version": "1.3.1",
+  "version": "1.4.0",
   "identifier": "com.nimbold.firelink",
   "build": {
     "beforeDevCommand": "node scripts/stage-engines.js && npm run dev",