fix: add preLaunchTask to VS Code launch configs for reliable F5 builds (#413)

Add a one-shot 'VSCode - Compile' task and wire it as preLaunchTask
so pressing F5 always compiles kilo-vscode before launching, regardless
of whether the background watch tasks started on folder open.

.vscode/launch.json

@@ -10,7 +10,8 @@
       "type": "extensionHost",
       "request": "launch",
       "args": ["--disable-extensions", "--extensionDevelopmentPath=${workspaceFolder}/packages/kilo-vscode"],
-      "outFiles": ["${workspaceFolder}/packages/kilo-vscode/dist/**/*.js"]
+      "outFiles": ["${workspaceFolder}/packages/kilo-vscode/dist/**/*.js"],
+      "preLaunchTask": "VSCode - Compile"
     },
     {
       "name": "VSCode - Run Extension (Local Backend)",
@@ -18,6 +19,7 @@
       "request": "launch",
       "args": ["--disable-extensions", "--extensionDevelopmentPath=${workspaceFolder}/packages/kilo-vscode"],
       "outFiles": ["${workspaceFolder}/packages/kilo-vscode/dist/**/*.js"],
+      "preLaunchTask": "VSCode - Compile",
       "env": {
         "KILO_API_URL": "http://localhost:3000"
       }

.vscode/tasks.json

@@ -65,6 +65,20 @@
       },
       "problemMatcher": []
     },
+    {
+      "label": "VSCode - Compile",
+      "type": "shell",
+      "command": "bun",
+      "args": ["run", "compile"],
+      "group": "build",
+      "presentation": {
+        "reveal": "silent"
+      },
+      "options": {
+        "cwd": "${workspaceFolder}/packages/kilo-vscode"
+      },
+      "problemMatcher": ["$tsc", "$eslint-stylish"]
+    },
     {
       "label": "VSCode - Tests",
       "type": "shell",