giles b8f389ac9b Import hook: verify library registered, re-entry guard ...

- _import_hook verifies library_loaded_p AFTER load_library_file
  to catch cases where the file loads but define-library doesn't register
- Re-entry guard (_loading_libs) prevents infinite retry loops
- cek_run import patch deferred — retry approach infinite-loops because
  cek_step_loop re-enters deeply nested eval contexts. Root cause:
  eval_expr → cek_run → cek_step_loop processes the ENTIRE remaining
  kont chain after import resolution, which includes rendering code that
  triggers MORE eval_expr calls. Needs architectural solution (step-level
  suspension handling, not run-level).

Server runs with 4 harmless IO suspension errors. These don't affect
functionality — symbols load via the global env.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-05 01:16:03 +00:00

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