Claude Activity Journal 2026

A chronicle of projects developed and enhanced with Claude Opus 4.5 assistance throughout 2026.

Project Summary

Highlight

The musicplayer project stands out as a complete app created by Claude Opus 4.5 from initial commit to Play Store ready in approximately 2 days, including Chromecast support!

January 1, 2026

jimandreas.github.io

Path: C:/a/j/html/jimandreas.github.io

Personal website using Hugo-Octopress template. Used Claude Opus 4.5 to convert the website to Hugo-Octopress template.

January 2, 2026

jimandreas.github.io

Added more content and fixed usability issues across the site.

January 3, 2026

materialistic

Path: C:/a/j/active/materialistic

Description: Material Design Hacker News client for Android

• Added CLAUDE.md for Claude Code guidance
• Upgraded Gradle, AGP, Kotlin, JDK, and AndroidX libraries
• Fixed deprecated buildconfig setting for AGP 9.0 compatibility
• PR Merged: #1

GamepadTest

Path: C:/a/j/active/GamepadTest

Description: Android app displaying Bluetooth gamepad state

• Added CLAUDE.md for Claude Code guidance
• Fixed deprecated API usages across codebase

January 4, 2026

GamepadTest

• Fixed minor resource issues
• Replaced crude hand-drawn gamepad icons with professional outlines
• Fixed layout issues with content positioning
• Updated UI and version
• PRs Merged: #14, #15

January 5, 2026

GamepadTest

• Added release signing configuration
• Updated app screenshot, revised version format
• PR Merged: #17

January 6, 2026

MotmBrowser

Path: C:/a/j/active/MotmBrowser

Description: 3D molecular structure viewer for RCSB “Molecule of the Month”

• Added CLAUDE.md for Claude Code guidance
• Updated all dependencies (AGP 8.13.2, Gradle 8.13, Kotlin JVM target)
• Fixed FastscrollBubble reliability issues
• Rolled version to 2.6.0
• PRs Merged: #18, #19, #20

January 7, 2026

MotmBrowser

• Fixed R8 stripping mollib data classes and FastscrollBubble array bounds crash
• Fixed edge-to-edge display for Android 15 (SDK 35)
• Fixed lint & accessibility issues (RTL support, text contrast, deprecated constraints)
• Rolled version to 2.8.0
• PRs Merged: #22, #23, #24

musicplayer (NEW)

Path: C:/a/j/claudeOpus/musicplayer

Description: Android music player app using Jetpack Compose and MVVM

Initial app creation by Claude Opus 4.5 from scratch!

January 8, 2026

musicplayer

A flurry of feature additions and polish:

• Added custom launcher icon (red sixteenth note on green background)
• Added auto-scroll file list to current track
• Added SD card storage selection for folder browsing
• Added persistent shuffle tracker to avoid repeating songs
• Fixed attributionTag manifest error
• Persist folder selection, last track, and shuffle state across restarts
• Added README with project overview
• Added Apache License 2.0
• Android Play Store submission materials (screenshots)
• Refactored to bammellab package
• Fixed minor build warnings
• Added album art support using Coil with custom MediaMetadataRetriever fetcher
• Fixed layout glitch when changing tracks
• Added music-themed loading indicator with animated equalizer
• Auto-select first track when loading folder
• Added Chromecast support for casting audio to Google Cast devices
• PR Merged: #1

January 9, 2026

musicplayer

Landscape and tablet layout improvements:

• Added landscape mode with side-by-side layout showing file list and player controls simultaneously
• Fixed play/pause state bug - The ViewModel’s playbackState was only synced inside the position update coroutine job. When pausing, the job cancellation left the state stale at PLAYING, preventing the UI from showing the play button
• Added tablet-specific landscape layout - Uses smallest screen dimension to detect tablets (≥600dp) and displays portrait-style vertical layout on the right panel, while phones keep the compact horizontal layout
• Updated README with documentation for landscape mode, Chromecast, and album art features