Expandable player: kill sluggish morph (cheaper compositing + snappy spring) — vc=76

- The detail body's alpha fade was rendering the whole scroll subtree to
  an offscreen buffer every frame (CompositingStrategy.Auto goes offscreen
  when alpha<1). Switch to ModulateAlpha — the body's rows don't overlap,
  so the per-draw-op fade is correct and skips the buffer. Main fix.
- Replace the 300ms FastOutSlowIn tween (slow ramp at both ends) with a
  no-bounce StiffnessMedium spring — distance-adaptive, reads as snappy.

buildSrc/src/main/kotlin/ProjectConfig.kt

@@ -9,6 +9,14 @@ const val STRAW_SDK_TARGET = 35
 
 // Sulkta fork — Straw
 //
+// vc=76 / 0.1.0-CJ — expandable-player smoothness pass:
+//   * The detail body no longer renders to an offscreen buffer every
+//     frame during the morph (CompositingStrategy.ModulateAlpha) — that
+//     offscreen alpha pass on the whole scroll subtree was the main
+//     cause of the sluggish feel.
+//   * Morph animation is now a snappy no-bounce spring instead of a
+//     300ms FastOutSlowIn tween (which ramped slowly at both ends).
+//
 // vc=75 / 0.1.0-CI — expandable player (full rearchitect):
 //   * The video page and the bottom minibar are now ONE container that
 //     morphs continuously between them, both directions. Replaces the
@@ -74,6 +82,6 @@ const val STRAW_SDK_TARGET = 35
 // vc=19 / 0.1.0-AE — rust pipeline cutover. Extraction via
 // strawcore-core (Sulkta-OSS/strawcore) via the UniFFI wrapper; no
 // NewPipeExtractor in the runtime path.
-const val STRAW_VERSION_CODE = 75
-const val STRAW_VERSION_NAME = "0.1.0-CI"
+const val STRAW_VERSION_CODE = 76
+const val STRAW_VERSION_NAME = "0.1.0-CJ"
 const val STRAW_APPLICATION_ID = "com.sulkta.straw"