- Improve mypy configuration with appropriate strictness settings
- Add comprehensive type hints to public API functions:
- hookspecs.py: Type register_commands and prepare_connection hooks
- plugins.py: Type get_plugins function and PluginManager
- recipes.py: Type parsedate, parsedatetime, jsonsplit functions
- utils.py: Type all public utility functions including rows_from_file,
TypeTracker, ValueTracker, chunks, hash_record, flatten, etc.
- db.py: Type Database, Queryable, Table, and View class methods
including constructor, execute, query, table operations, etc.
- Exclude cli.py from strict checking (internal implementation detail)
- All public API modules now pass mypy type checking