Will Anderson
ec889e1e53
Implement compile_test() entry point that emits a C test harness instead of a normal program. Test blocks (previously skipped) now compile to static functions with per-assertion pass/fail tracking. Assert statement added to parser and codegen. Runtime extended with now_ns, fs_list_json, json_build_object, json_build_array, json_escape_string, state_has, state_get_or. Fix float negation codegen, float equality comparisons, time_to_parts return type (JSON string), time_format empty-fmt, json_set raw-value semantics, state_keys JSON array return. All 310 native tests pass across 9 suites (core, text, string, math, env, state, json, time, fs).