fix(artifacts): compare PyInstaller declaration facts

Compare stable producer-tagged declarations independently of materialized payloads. Preserve missing facts as unknown without applying PyInstaller rules to foreign metadata or nested container entries.

Fixes #6484
Fixes #6485

docs/python-packaged-applications.md

@@ -50,6 +50,15 @@ table index; original names remain available in the supplied artifact.
 Path failures use bounded escaped previews and report the original length;
 accepted paths and retained source names are not shortened.
 
+`compare_artifacts` compares these node-less records as declarations using the
+container, container name, source name and type code. Equal option or dependency
+declarations can therefore compare unchanged without implying that an external
+dependency's bytes were found. For materialized PyInstaller members, the same
+fields participate in the metadata delta independently of content identity;
+archive offsets and table positions remain location facts, not declaration
+identity. Missing declaration facts and unavailable non-metadata content remain
+unknown.
+
 Request `detail: "summary"` for a compact inspection, then query retained
 Evidence with `inspect_analysis_view`. An inventory view can select
 `collection: "occurrences"`, `entry_kinds: ["metadata"]`, exact logical paths or