fix: preseed.cfg UEFI partitioning and user password prompts

- Add EFI System Partition (ESP) for UEFI boot support
- Add $defaultignore{ } to LVM partitions for proper crypto handling
- Add in_vg{ knel_vg } and lv_name{ } for explicit volume placement
- Change debconf priority from critical to high to allow user password prompts
- Update documentation dates to 2026-02-19
- Update ISO size references from 450 MB to 816 MB
- Update checksums to current values

Fixes installer error "No root file system is defined"
Fixes missing non-root user password prompt

💘 Generated with Crush

Assisted-by: GLM-4.7 via Crush <crush@charm.land>

docs/TEST-COVERAGE.md

@@ -1,9 +1,10 @@
 # KNEL-Football Test Coverage Report
 
 ## Summary
-- **Test Suites**: 11 comprehensive test files
+- **Test Suites**: 20 comprehensive test files
+- **Test Cases**: 562 tests
 - **Test Files Coverage**: All critical shell scripts and hooks
-- **Test Types**: Unit, Integration, End-to-End, Security Compliance
+- **Test Types**: Unit, Integration, End-to-End, Security, System
 - **Test Framework**: BATS (Bash Automated Testing System)
 - **Status**: ✅ Comprehensive coverage achieved
 
@@ -376,6 +377,6 @@ All tests (except VM tests) run inside Docker container:
 
 ---
 
-**Last Updated**: 2026-02-17
+**Last Updated**: 2026-02-19
 **Test Framework**: BATS v1.x
 **Coverage Tool**: Manual assessment