chore(wails): scaffold v3 project boilerplate

Wails v3 replaces the NPM-only dev entry point. This adds the Go module,
Taskfile, build metadata, and a minimal window shell without touching
frontend logic.

Co-authored-by: Cursor <cursoragent@cursor.com>

build/darwin/Info.plist

@@ -0,0 +1,29 @@
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+    <dict>
+        <key>CFBundlePackageType</key>
+            <string>APPL</string>
+        <key>CFBundleName</key>
+            <string>My Product</string>
+        <key>CFBundleExecutable</key>
+            <string>sfxkeeb</string>
+        <key>CFBundleIdentifier</key>
+            <string>com.example.sfxkeeb</string>
+        <key>CFBundleVersion</key>
+            <string>0.1.0</string>
+        <key>CFBundleGetInfoString</key>
+            <string>This is a comment</string>
+        <key>CFBundleShortVersionString</key>
+            <string>0.1.0</string>
+        <key>CFBundleIconFile</key>
+            <string>icons</string>
+        <key>CFBundleIconName</key>
+            <string>appicon</string>
+        <key>LSMinimumSystemVersion</key>
+            <string>12.0.0</string>
+        <key>NSHighResolutionCapable</key>
+            <string>true</string>
+        <key>NSHumanReadableCopyright</key>
+            <string>© 2026, My Company</string>
+    </dict>
+</plist>