dap-tui: ratatui device-sync dashboard

Full rewrite of dap-sync as a Rust TUI on ratatui:
- Tokyo Night theme, gradient title rule, rounded panels
- Devices sidebar with live mount status + last-sync age
- Dashboard / Sync / Logs / Config tabs
- Live sync engine: rclone mirror, NFC-aware diff, rsync
  progress parsing, podkit + mlove (fatsort) finalize
- Abort-safe subprocess handling, persisted sync state

Cargo.toml

@@ -0,0 +1,20 @@
+[package]
+name = "dap-tui"
+version = "0.1.0"
+edition = "2021"
+description = "Device sync for portable players — TUI edition (ratatui)"
+license = "MIT"
+
+[dependencies]
+ratatui = "0.30"
+toml = "0.8"
+serde = { version = "1", features = ["derive"] }
+chrono = "0.4"
+unicode-normalization = "0.1"
+dirs = "6"
+anyhow = "1"
+
+[profile.release]
+lto = true
+opt-level = 3
+strip = true