{"content":"This proposal pushes regex matching to the limit with advanced alternations, tricky whitespace, special characters requiring escapes, IPv6 domain literals, near-miss invalid patterns, and items that require backreferences for repeated content. It covers complex phone formats, extended date/time formats, advanced GUID and hash strings, MAC addresses, repeated pattern references, and more, demanding a highly robust single-regex solution.","function_call":{"name":"make_move","arguments":"{\n  \"reasoning\": \"This proposal pushes regex matching to the limit with advanced alternations, tricky whitespace, special characters requiring escapes, IPv6 domain literals, near-miss invalid patterns, and items that require backreferences for repeated content. It covers complex phone formats, extended date/time formats, advanced GUID and hash strings, MAC addresses, repeated pattern references, and more, demanding a highly robust single-regex solution.\",\n  \"move\": {\n    \"text\": \"H... (truncated)