* feat(installer): add guided zeroclaw installer entrypoint
- add top-level POSIX wrapper (zeroclaw_install.sh) that ensures bash is present
- route bootstrap/install compatibility scripts through the new installer entrypoint
- improve Linux dependency handling for Alpine/Fedora/Arch, including pacman container fallback
* fix(ci): resolve dependabot config conflict and run daily
- remove duplicate docker ecosystem entry with overlapping directory/target-branch
- switch cargo, github-actions, and docker schedules from monthly to daily
