BUG-1: fix test_server_tools.py assert "ALWAYS" → "Always" (case mismatch)
BUG-2: export_memory() now includes hypotheses, upgrade_requests, token_saves,
people tables; renamed bigmind_version → bigmind_schema_version (int)
BUG-3: auto_close.py replaced CURRENT_TIMESTAMP (SQLite) with Python
datetime.now(timezone.utc).isoformat() for consistent UTC timestamps
PERF-1: context_builder.py caps get_facts() at _MAX_CONTEXT_FACTS=50 with
overflow hint to prevent unbounded context growth
All 297 tests passing. Upgrade requests #6-9 resolved.
Health report: plans/BIGMIND_HEALTH_REPORT_2026-04-04.md