Closes internal-consistency items 7 through 15. Nineteen non-static functions were in the ABI with no declaration anywhere, so no consumer could call them and any consumer could collide with them. The four gamepad_handle_* functions are the ones that mattered: controller.h declared akgl_controller_handle_button_down and three siblings that did not exist, so anything compiled against the header alone failed to link. The definitions carry the declared names now, which also closes Defects -> Known and still open item 10, and their documentation moved to the header. The rest are either declared under a "part of the internal API" block -- akgl_game_save_actors and akgl_game_load_versioncmp, which tests/game.c had to declare for itself, plus six tilemap loader helpers the untested-loader work wants to reach -- or static, which is what the four save iterators and load_objectnamemap should always have been. akgl_path_relative_from is deleted: declared nowhere, called from nowhere, never wrote its output, and leaked a pooled string on every call, so it closes Known and still open item 4 and item 40 by ceasing to exist. scripts/check_api_surface.sh keeps it closed. It reads the built library's dynamic symbol table and every public header with comments stripped, and fails on an exported akgl_* symbol that is declared nowhere. Stripping comments is the whole point -- four of these were mentioned in controller.h prose, which is how they went unnoticed. The pool-size ceilings are defined once, in heap.h, so the #ifndef override hook fires for the first time; actor.h, sprite.h and character.h were defining the same four unconditionally from headers heap.h includes above its own guard. tests/header_pool_override.c fails the compile if that regresses. Also here: (void) rather than () on the twelve no-argument entry points, AKERR_NOIGNORE only on declarations, static helpers with the akgl_ prefix dropped, and the six parameter-name mismatches. akgl_get_json_with_default had its two contexts swapped rather than merely misspelled -- the incoming one was `err` and its own was `e`, which is the name reserved for an incoming one. 24/24 pass, reindent --check clean. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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