setup.sh hardcoded openjdk-17 and only ever checked `java -version`, so it
passed its own Java check on a box whose JAVA_HOME pointed at a JDK that had
been removed -- then died at `./gradlew --version` with the real cause
(JAVA_HOME is set to an invalid directory) swallowed by a /dev/null redirect.
- latest_installable_jdk() asks apt/dnf/pacman for the highest openjdk-N-jdk
within [MIN_JAVA, MAX_JAVA]. MAX_JAVA=21 is the ceiling the gradle-8.5
wrapper can run on; raise it alongside gradle-wrapper.properties.
- install path uses that version instead of a hardcoded 17, and an installed
but older JDK now prompts for an upgrade rather than passing silently.
- fix_java_home() repoints JAVA_HOME at the JDK behind the java on PATH when
the inherited one has no bin/java, and prints the permanent fix.
- version parser tolerates "Picked up _JAVA_OPTIONS" preamble and 1.8.0_x.
- missing git is fatal instead of being recorded and ignored; gradle's own
error output survives a wrapper failure.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011thcefjGXbPwcgLmRqFWbb
Create setup.sh that checks for and installs dependencies:
- Detects Java 11+ or offers to install via package manager
- Verifies Gradle wrapper presence
- Checks for unzip (needed for deployment)
- Runs test build to verify everything works
- Provides clear next steps after successful setup
Update readme with Quick Start section featuring setup script as the recommended approach for new systems.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
