Redraw Tape Engine as a real tape transport (v0.13.2)

Reels are now NAB-style: a metal flange with three rotating rounded-triangular
bobbin holes and a hub, instead of chariot-wheel spokes. Tape runs under tension
as straight lines from each reel down to a rounded-rectangle playhead between and
below them (the top tape line is gone). The four controls are vintage round knobs
in a row — wow, flutter, hiss, wow-sync — replacing the sliders/stepper.

Each knob is weighted so all four are visible (the shared Knob's internal
fillMaxWidth text had let the first one swallow the row), and Knob gains an
optional knobSize (default 44 dp, so other editors are unchanged) which the tape
knobs set to 58 dp.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/build.gradle.kts

@@ -22,8 +22,8 @@ android {
         // (android.media.midi) and AAudio low-latency audio we rely on.
         minSdk = 26
         targetSdk = 34
-        versionCode = 33
-        versionName = "0.13.0"
+        versionCode = 35
+        versionName = "0.13.2"
 
         // We provide our own instrumentation runner if/when tests are added.
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"