build: add --no-cache flag for QEMU rebuild, add GitHub issue templates

docs: update skill.md with recent fixes (v1.1.2)

Remove duplicate PNG launcher icons causing build failures

v1.1.2: fix wakelock race, Android 14+ crash, nav back handler, update check rate limit

fix: wakelock race, Android 14+ crash, restart race, socket cleanup, diagnostic log

fix: storage slider discrete values and terminal theme/font persistence

docs: update skill.md build commands and QEMU API level

docs: update skill.md with Android 28 requirement and fix for copy_file_range issue

docs: add build-termux-android.sh to build from source steps

docs: update Android requirement to 9.0+ (API 28) and fix license badge

fix: lower Android API to 28 for Android 12 compatibility

docs: replace ASCII diagram with simpler text format

docs: fix ASCII diagram alignment in README

docs: add GNU GPL v2.0 LICENSE file

docs: rewrite README with better structure and organization