These three defaulted to "every project" when run with no arguments -
inconsistent with zbackup/zdeploy/zstart/etc. (which show usage), and a
surprising amount of work to kick off by accident: zbackup_ec2 pulls a
server backup of every project, and zec2online deep-checks everything AND
auto-starts any downed stacks. Now a bare invocation prints usage and
lists the projects; 'all' does what bare used to. Applied to both the
bash and PowerShell versions.
Config-driven PowerShell scripts to run infrastructure tasks (deploy, restart, backup, diagnostics) yourself instead of having an AI agent orchestrate them, to save agent tokens. Environment specifics live in zconfig.json (gitignored).
