Ecto schema for the polymorphic mnemosyne_nodes table.
mnemosyne_nodes
Stores all node types (semantic, episodic, procedural, etc.) in a single table with JSONB data and links fields and a pgvector embedding column.
data
links
embedding
@type t() :: %MnemosynePostgres.Schema.Node{ __meta__: term(), created_at: term(), data: term(), embedding: term(), id: term(), links: term(), repo_id: term(), tenant_id: term(), type: term() }