All tracked .sh files were stored as mode 100644 (non-executable), even
though the CI workflow and normal usage invoke several of them directly
(./scripts/build.sh) rather than through `bash`. On a fresh Linux
checkout this fails with a permission error.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Bash equivalent of the PowerShell manifest module: sync_managed_destination
plus its read/write/hash helpers, using sha256sum and a TSV manifest so
the same idempotent-install, stale-detection, and local-modification
protection behavior is available without a PowerShell dependency.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Julian lechnerandClaude Sonnet 5