feat(v2): add xterm.js terminal pane with Canvas addon

- Install @xterm/xterm, @xterm/addon-canvas, @xterm/addon-fit, @tauri-apps/api
- TerminalPane: xterm.js with Catppuccin Mocha theme, auto-fit, resize observer
- PTY bridge: Tauri invoke wrappers + event listeners for data/exit
- Bidirectional streaming: keyboard input -> PTY write, PTY output -> xterm write
- 100ms debounced resize propagation to PTY backend

v2/package-lock.json

@@ -1,12 +1,18 @@
 {
-  "name": "v2",
-  "version": "0.0.0",
+  "name": "bterminal-v2",
+  "version": "0.1.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "v2",
-      "version": "0.0.0",
+      "name": "bterminal-v2",
+      "version": "0.1.0",
+      "dependencies": {
+        "@tauri-apps/api": "^2.10.1",
+        "@xterm/addon-canvas": "^0.7.0",
+        "@xterm/addon-fit": "^0.11.0",
+        "@xterm/xterm": "^6.0.0"
+      },
       "devDependencies": {
         "@sveltejs/vite-plugin-svelte": "^6.2.1",
         "@tsconfig/svelte": "^5.0.6",
@@ -908,6 +914,16 @@
         "vite": "^6.3.0 || ^7.0.0"
       }
     },
+    "node_modules/@tauri-apps/api": {
+      "version": "2.10.1",
+      "resolved": "https://registry.npmjs.org/@tauri-apps/api/-/api-2.10.1.tgz",
+      "integrity": "sha512-hKL/jWf293UDSUN09rR69hrToyIXBb8CjGaWC7gfinvnQrBVvnLr08FeFi38gxtugAVyVcTa5/FD/Xnkb1siBw==",
+      "license": "Apache-2.0 OR MIT",
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/tauri"
+      }
+    },
     "node_modules/@tsconfig/svelte": {
       "version": "5.0.8",
       "resolved": "https://registry.npmjs.org/@tsconfig/svelte/-/svelte-5.0.8.tgz",
@@ -939,6 +955,30 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@xterm/addon-canvas": {
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/@xterm/addon-canvas/-/addon-canvas-0.7.0.tgz",
+      "integrity": "sha512-LF5LYcfvefJuJ7QotNRdRSPc9YASAVDeoT5uyXS/nZshZXjYplGXRECBGiznwvhNL2I8bq1Lf5MzRwstsYQ2Iw==",
+      "license": "MIT",
+      "peerDependencies": {
+        "@xterm/xterm": "^5.0.0"
+      }
+    },
+    "node_modules/@xterm/addon-fit": {
+      "version": "0.11.0",
+      "resolved": "https://registry.npmjs.org/@xterm/addon-fit/-/addon-fit-0.11.0.tgz",
+      "integrity": "sha512-jYcgT6xtVYhnhgxh3QgYDnnNMYTcf8ElbxxFzX0IZo+vabQqSPAjC3c1wJrKB5E19VwQei89QCiZZP86DCPF7g==",
+      "license": "MIT"
+    },
+    "node_modules/@xterm/xterm": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/@xterm/xterm/-/xterm-6.0.0.tgz",
+      "integrity": "sha512-TQwDdQGtwwDt+2cgKDLn0IRaSxYu1tSUjgKarSDkUM0ZNiSRXFpjxEsvc/Zgc5kq5omJ+V0a8/kIM2WD3sMOYg==",
+      "license": "MIT",
+      "workspaces": [
+        "addons/*"
+      ]
+    },
     "node_modules/acorn": {
       "version": "8.16.0",
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.16.0.tgz",