Define authoritative recording modes in all recording indexes
Canonical source stage for explicit recording_mode: time_lapse in 1,256 Standard and 128 Pre-Standard records, real_time in five separately indexed records. Every previous CSV value, field position and row order is preserved. Source definitions, validators and export contracts are updated together; acquisition protocols, encoded timing, candidate relationships, blank real-time work IDs, media identities and source qualifications retain their meaning. Hugging Face is the authoritative data/metadata repository; GitHub is a lightweight pinned browser projection. Independent source review found no defects and 83 focused regression tests pass. This pull request remains staged until the two workflow CSVs, four native Parquets and native manifest are rebuilt against this exact source commit and integrated validation passes. No source media or paired photograph outputs are changed.