Baseline: full tree snapshot after git repository loss

The previous .git directory was found gutted (only info/ remained), so
history is unrecoverable locally. This commit restores version control
with the tree exactly as it stands: the working app, the preview-tracks
launcher on the artist hero, the scrollable-track-previews design bundle
(docs + approved mockups), and the Phase 0 validation artifacts.

src-tauri/capabilities/default.json

@@ -0,0 +1,21 @@
+{
+  "$schema": "../gen/schemas/desktop-schema.json",
+  "identifier": "default",
+  "description": "enables the default permissions",
+  "windows": [
+    "main"
+  ],
+  "permissions": [
+    "core:default",
+    "core:window:allow-minimize",
+    "core:window:allow-maximize",
+    "core:window:allow-unmaximize",
+    "core:window:allow-toggle-maximize",
+    "core:window:allow-close",
+    "core:window:allow-start-dragging",
+    "core:window:allow-is-maximized",
+    "core:window:allow-show",
+    "core:window:allow-set-focus",
+    "dialog:allow-open"
+  ]
+}