Debian package `Installed-Size` value

Editor assessment

The subject states the defect field precisely: the debian package's Installed-Size value was wrong, with a meaningful bundler scope. The package format, the control-field casualty, and the implied symptom (incorrect size reporting in package managers) are all recoverable, so no body is required. The fix type is right, no footers appear, and hygiene is clean, with the field name backticked exactly as it appears in control files. The message identifies the artifact, the metadata field, and the correction in one accurate line. Complete and publishable.