Root causes of server [http-load] errors:
1. _import_hook passed pre-computed string key to library_loaded_p
which calls library_name_key(string) → sx_to_list(string) → crash.
Fix: pass original list spec, not the string key.
2. resolve_library_path didn't check web/lib/ for (sx dom), (sx browser),
(web boot-helpers). These libraries use namespace prefixes that don't
match their file locations.
Server startup errors: 190 → 0.
2683/2684 tests pass (1 known: define-library import clause — spec gap).
New test file: spec/tests/test-import-bind.sx
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>