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.

crates/tagger/examples/read.rs

@@ -0,0 +1,24 @@
+//! Read tags from every audio file in a folder and print the outcome.
+//!   cargo run -p tagger --example read -- "C:\folder"
+
+fn main() {
+    let dir = std::env::args().nth(1).expect("usage: read <dir>");
+    for entry in std::fs::read_dir(&dir).expect("read_dir").flatten() {
+        let path = entry.path();
+        if !path.is_file() {
+            continue;
+        }
+        match tagger::read_summary(&path) {
+            Ok(s) => println!(
+                "OK  {} | artist={:?} album={:?} title={:?} track={:?} dur={:?}",
+                path.file_name().unwrap().to_string_lossy(),
+                s.artist,
+                s.album,
+                s.title,
+                s.track_no,
+                s.duration_secs
+            ),
+            Err(e) => println!("ERR {} | {e}", path.file_name().unwrap().to_string_lossy()),
+        }
+    }
+}