Updated gaps 1.5-1.10, 2.4, 2.7-2.12, 3.1, 3.5, 3.8-3.13, 7.1-7.6, and 8.3-8.8 with IMPLEMENTED status, implementation file references, task/phase numbers, and test file names. All 93 sub-gaps across 15 sections are now marked as IMPLEMENTED. Updated test count to 6,920.