ai.newnal.illi.media.uploadItem

Upload one photo or video. multipart/form-data parts: homeId, file, timezone?, people? (JSON array of {name, relationship?}, at most 20 people), note? (at most 300 graphemes), takenAt? (offset-bearing timestamp). Unknown parts are ignored. A manual takenAt is queued after registration through updateUserInput. Otherwise capture time comes from file metadata, then upload time. Same-file content in one home returns the existing active original across uploaders, ignoring the new people/note/takenAt without another record or media registration. Originals and derivatives are stored on their original uploader PDN.