- tests/run.sh: check source return code, report failures
- tests/regression/run.sh: use mktemp + trap cleanup instead of fixed /tmp paths
- tests/regression/run.sh: include .mcp.json in regression comparison
- tests/regression/take-snapshot.sh: use --platform flag instead of stale scripted input
- adapters/opencode/templates/plugin-stub.js.tmpl: include stdout in hook block error message
Adds take-snapshot.sh script and the resulting snapshot/ directory,
capturing the exact vault state produced by launchme.sh before the
framework-agnosticity refactor begins.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>