Adds PersonalNote — a note a person wrote for themselves.

Why a new schema rather than reuse

The registry currently has no type for this, and the two nearest candidates are both something else:

• Note (18a83870-…) is platform documentation. Every record of it in the wild is an integration note or a marketplace listing ("Ontology: File", "Marketplace Listing"); it has no author and no creation time, its content is a URI pointing at a file, and its audience means "who is this documentation written for". A person's note does not belong there.
• TaskNote is scoped to a task — it requires taskId.

Shape

Modelled on schema.org/NoteDigitalDocument, so the semantics are familiar outside W3DS, but the identity and time fields follow this registry's convention rather than schema.org's — id / createdAt / authorEName instead of dateCreated / author — because all 30 existing schemas name them that way and a reader here should not have to special-case one type. The mapping is stated in the schema description.

Deliberately domain-level and general: what a note is about goes in about / keywords, never into a narrower type. A note about paint and a note about a bike ride are the same kind of thing, and splitting them by subject is how vocabulary fragments.

Two fields worth calling out:

• derivedRecords — references to records extracted from the note (a purchase read off a photographed letter, a product identified in it), each carrying confidence when it was inferred rather than read verbatim. The note stays authoritative for what was actually said: a derived reading can be wrong and redone, the original cannot.
• capturedBy — the eName of the application that recorded it, so a reader can tell an app-assisted capture from a hand-typed one.

additionalProperties: true, following communityActivity and socialMediaPost.

Context

Written for Nootropic, where a person hands over a photo, a voice note or a document and expects the meaning to be findable years later. Their utterance is stored as a PersonalNote and anything structured we extract references it. It is published in our self-description at /.well-known/w3ds-platform.json with registered: false until this merges — the flag is checked against this registry at request time rather than maintained by hand.

Happy to rename fields or drop derivedRecords / capturedBy if you would rather keep the type minimal.

Summary by CodeRabbit

• New Features
  • Added a standardized PersonalNote schema.
  • Personal notes now support content, authorship, creation time, attachments, discovery details, provenance, related records, and archive status.
  • Required fields ensure each note includes an identifier, text, creation timestamp, and author.