refactor: consolidate test-iso.sh and monitor-build.sh into run.sh

- Merged VM testing functions into run.sh (test:iso commands)
- Merged build monitoring into run.sh (monitor command)
- Updated tests to reference ./run.sh test:iso instead of ./test-iso.sh
- Updated documentation (README.md, AGENTS.md, STATUS.md)
- Removed standalone scripts per project cleanup

💘 Generated with Crush

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

tests/system/fde_test.bats

@@ -97,7 +97,7 @@
 @test "FDE passphrase prompt appears at boot (requires VM)" {
     # This test requires VM console access
     if ! virsh domstate knel-football-test 2>/dev/null | grep -q "running"; then
-        skip "VM not running - start with ./test-iso.sh create"
+        skip "VM not running - start with ./run.sh test:iso create"
     fi
     
     # FDE prompt verification requires console access
@@ -107,7 +107,7 @@
 @test "Encryption status check works (requires VM)" {
     # This test requires running system
     if ! virsh domstate knel-football-test 2>/dev/null | grep -q "running"; then
-        skip "VM not running - start with ./test-iso.sh create"
+        skip "VM not running - start with ./run.sh test:iso create"
     fi
     
     # Would need to run check-encryption.sh inside VM