Flip rotation-correction angles for both landscape orientations

Bring back the v1.1.9 approach (apply an inverse rotation to the
texcoord sampling pattern so the camera image stays world-aligned
through device rotation), but with the right signs this time. The
previous angles were 180° off for both landscape orientations and
showed the camera content upside-down on a real device.

Verified each Display.rotation against the emulator's virtual scene
(sky-yellow → road-brown → buildings-dark): the sky/yellow band now
sits at the top of the screen in all four orientations.

Bump to 1.1.11.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

app/src/main/java/no/naiv/tiltshift/effect/TiltShiftRenderer.kt

@@ -219,9 +219,9 @@ class TiltShiftRenderer(
         // -activityAngle puts the world-aligned point originally at screen P
         // at the same screen P after the activity has rotated.
         val angle = when (displayRotation) {
-            Surface.ROTATION_90 -> -90f
+            Surface.ROTATION_90 -> 90f
             Surface.ROTATION_180 -> 180f
-            Surface.ROTATION_270 -> 90f
+            Surface.ROTATION_270 -> -90f
             else -> 0f
         }
         if (angle == 0f) {

version.properties

@@ -1,4 +1,4 @@
 versionMajor=1
 versionMinor=1
-versionPatch=9
-versionCode=11
+versionPatch=11
+versionCode=13