review(v3.1.0) slice A: crates and build files (do not merge)

Cargo.toml

@@ -77,7 +77,7 @@ default-members = ["crates/rustynes-libretro"]
 # `release-auto.yml` reads the `## [X.Y.Z]` line for BOTH the release body
 # fallback and the title codename — so the date and quoted codename are load-
 # bearing, not decoration.
-version = "3.0.1"
+version = "3.1.0"
 edition = "2024"
 # The toolchain is 1.99 (rust-toolchain.toml), and every crate inherits this
 # floor, the libretro path included: the libretro buildbot follows the same pin

android/app/build.gradle.kts

@@ -65,8 +65,8 @@ android {
         // `scripts/release-automation/bump_release.py` from now on, starting
         // with the 3.0.0 cut. versionCode = MAJOR * 10000 + MINOR * 100 +
         // PATCH, so 20909 still rises past 20004.
-        versionCode = 30001
-        versionName = "3.0.1"
+        versionCode = 30100
+        versionName = "3.1.0"
         // No abiFilters here — set per buildType so release ships arm64 only
         // while debug keeps x86_64 for the emulator.
         // PLAY_BUILD is set per-flavor below (`false` for `foss`, `true` for `play`),

crates/rustynes-android/src/gfx.rs

@@ -14,8 +14,10 @@
 //! frontend (the `rustynes-gfx-shaders` crate), so the on-screen filter look matches
 //! across platforms: the `params` uniform selects None / Scanlines / CRT on one
 //! pipeline (None = a plain letterboxed blit), and a second pipeline runs the
-//! LMP88959 NTSC pass when `filter == 3`. Only the Bisqwit NTSC pass (which needs the
-//! `R16Uint` palette-index texture from the bridge) remains a follow-up.
+//! LMP88959 NTSC pass when `filter == 3`. A third pipeline runs the Bisqwit composite
+//! NTSC pass when `filter == 4`, reading the `R16Uint` palette-index texture the
+//! bridge supplies (`index_texture`, `bisqwit_pipeline`). This line called that pass
+//! a follow-up until v3.1.0, long after it landed.
 
 use ndk::native_window::NativeWindow;
 use raw_window_handle::{AndroidDisplayHandle, HasWindowHandle, RawDisplayHandle};