Atomic leaf in the theme hierarchy. Carries name, description, type, frequency, entry_ids, and coded_segments inline so a saved ThemeSet is self-contained: a researcher with just themes.json can verify every quote without needing the original coding_state.
Arguments
- key
Code key (codebook lookup key, e.g., "tool_helps")
- name
Human-readable code name (e.g., "Remote work improves focus")
- description
Code description
- type
Code type (e.g., "descriptive", "framework_construct", "anomaly")
- frequency
How many entries are coded with this code
- entry_ids
Character vector of entry std_ids
- coded_segments
List of coded-segment records (each with entry_id, text, offsets, QuoteProvenance)