Factory Pattern

Function that encapsulates object creation, returning an allocated and initialized struct. Centralizes construction logic and hides allocation details from callers.

ikigai Application

Current usage:

• ik_scrollback_create() - creates scrollback buffer
• ik_mark_create() - creates checkpoint marks
• ik_input_parser_create() - creates input parser

Convention: Use *_create() for heap allocation (caller owns), *_init() for initializing pre-allocated memory.

With ik_env_t: Factories should receive ik_env_t *env as first parameter for access to logger, config, and clock during construction.

Testing: Factories enable injecting dependencies at creation time rather than reaching for globals.