Add support for regex-based dictionary entries across the full stack: Backend: - DictionaryEntry model: add is_regex column (Boolean, default False) - DictionaryEntryCRUD: validate regex on add_entry(), compile on creation - _enforce_dictionary: match by regex pattern when is_regex=True - dictionary_filter: support is_regex in filter/query - metrics: include is_regex entries in metrics calculations - Alembic migration: 20260604_add_is_regex_to_dictionary_entries - Merge migration: 351afb8f961a (merge is_regex + composite index heads) Frontend: - DictionaryDetailModel: add is_regex field to DictionaryEntry interface, EditForm, and addForm; sync edit/add form state with backend schema
Generic single-database configuration.