[DanielNetzer]

Implements issue #376.

Molecule: mol-376-285a64d0d86161a7c1b72a67
Formula: forgecell-github-issue
Base: 56fb4c2cbe6e4c807e0e7eeec843812e92c11a67
Delivery: 65d636914fb0447e3685326633303856d262637a

Awaiting exact-commit CI and human review. Harness-reported checks are not independent CI evidence. No merge, deployment or issue closure is authorized.

[DanielNetzer]

Adversarial review: no HIGH or MEDIUM findings. A pass after the first prints one summary line plus only:

• new or changed item groups;
• items that are no longer eligible;
• new warnings and stop lines.

An error pass is printed in full and doesn't reset the comparison. A skip repeated for the same reason prints one line. One-shot loop and --once output is unchanged, because loopItemText is the same rendering extracted. Item reasons carry no elapsed time, only a fixed timeout, so an idle Molecule doesn't count as a change on every pass.

The branch is based on 56fb4c2. Main has since gained the docs-only #378, which edits different lines of docs/install.md. CI runs on the merge ref.