Maitz Claude Code local exercise validation (English kit) Date: 2026-10-08 No Claude CLI installed or invoked. No remote scripts executed. Python standard library checks only. Unmodified starter must FAIL PASS English language and LTR PASS UTF-8 declaration FAIL Exact browser title FAIL One exact H1 FAIL Three exact tasks in order PASS No active or external elements PASS No obvious URL or CSS imports These are exercise checks, not a complete HTML or security audit. Exit code: 1 Expected outcome: 1 Reference must PASS PASS English language and LTR PASS UTF-8 declaration PASS Exact browser title PASS One exact H1 PASS Three exact tasks in order PASS No active or external elements PASS No obvious URL or CSS imports These are exercise checks, not a complete HTML or security audit. Exit code: 0 Expected outcome: 0 Negative control: wrong_task PASS English language and LTR PASS UTF-8 declaration PASS Exact browser title PASS One exact H1 FAIL Three exact tasks in order PASS No active or external elements PASS No obvious URL or CSS imports These are exercise checks, not a complete HTML or security audit. Exit code: 1 Expected outcome: 1 Negative control: wrong_direction FAIL English language and LTR PASS UTF-8 declaration PASS Exact browser title PASS One exact H1 PASS Three exact tasks in order PASS No active or external elements PASS No obvious URL or CSS imports These are exercise checks, not a complete HTML or security audit. Exit code: 1 Expected outcome: 1 Negative control: script_added PASS English language and LTR PASS UTF-8 declaration PASS Exact browser title PASS One exact H1 PASS Three exact tasks in order FAIL No active or external elements PASS No obvious URL or CSS imports These are exercise checks, not a complete HTML or security audit. Exit code: 1 Expected outcome: 1