Phase 2b introduced a transitive extensionless TS import in buzzAgentConfig.ts
("./modelCapabilities") that Node's --experimental-strip-types cannot resolve
without help. Add scripts/ts-esm-loader.mjs — a minimal ESM custom loader that
patches extensionless relative imports to .ts files when the file exists on disk.
Update run-differential.mjs shebang to self-bootstrap with the loader.
Also fix the allowlist coverage gate: totalAllowlisted was declared but never
incremented, so the summary always printed "0 allowlisted" and stale allowlist
entries (which mask future regressions) went undetected. Replace with per-axis hit
tracking via allowlistHits Set; report exercised slot count (N/total) in the
summary; FAIL with STALE_ALLOWLIST if any declared entry fires zero divergences.
Co-authored-by: Will Pfleger <pfleger.will@gmail.com>
Signed-off-by: Will Pfleger <pfleger.will@gmail.com>
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