Inspect unspent file authority operation links

[aruintelligence]

Summary

• Scan every grant and operation marker during read-only reconciliation, including records without a spent claim.
• Report orphan markers, missing or mismatched operation links, and malformed grant/operation records as invalid_records for operator review.
• Document the expanded inspection scope and add three unanchored regression cases.

Evidence

• Before the change, orphan-marker and unspent-grant regression cases failed because the report returned observed_consistent.
• npm test: 1,042 passed, 0 failed.
• git diff --check: clean.

This inspection is observational; it does not prove provider delivery or authorize automatic retry.