v1.13: drop session marker, single-color weekly marker, weekday reset

- Remove the pace marker from the 5-hour (session) bar entirely.
- Weekly bar marker is now a single color (white), no green→purple tiers.
- Marker is a clean rounded tick; removed the white-halo/tier styling.
- Remove the '% over/under pace' text everywhere (widget + app).
- Weekly reset label now shows the weekday ('Resets Friday 3:00 PM'),
  never 'tomorrow'.

versionCode 14 / versionName 1.13. Includes rebuilt signed release APK.

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

app/build.gradle.kts

@@ -11,8 +11,8 @@ android {
         applicationId = "me.khodak.claudeusage"
         minSdk = 26
         targetSdk = 34
-        versionCode = 13
-        versionName = "1.12"
+        versionCode = 14
+        versionName = "1.13"
     }
 
     signingConfigs {