Clarify file and provenance semantics
Documentation-only clarification based on main f67dee90aaf9df7d25e8b5c2e686ff7a80842cbe. Defines archive counts as indexed video files; distinguishes historical multi-recording possibilities from the standard-2026-08-27 one-source-recording workflow; narrows RecNN to file order; preserves prospective finish-label and historical UnknownTime boundaries; states SHA-256, origin, size, container, 30-fps, and file-size-causation limits; and updates semantic wording tests. No media, paths, metadata rows, record IDs, hashes, protocol assignments, provenance statuses, or release receipts changed. Validation: 70 unit tests passed; metadata, timing, fragment, physical-reference, checksum-structure, and relative-link checks passed.
Publishing for the explicitly authorized merge after rechecking exact parent/head, zero conflicts, five-file scope, remote bytes, 70/70 tests, and 801 active identities.
Merged after explicit authorization and final verification of exact parent/head, zero conflicts, five-file documentation/test scope, remote byte equality, 70/70 tests, and unchanged active data identities.