Fix goroutine-unsafe ULID entropy by wrapping in LockedMonotonicReader.
Move PRAGMA foreign_keys outside transaction in v3 migration where
SQLite was silently ignoring it. Escape LIKE wildcards in link
resolution to prevent false matches. Add non-localhost binding warning,
log writeJSON encoder errors, add ?permanent=true for explicit hard
delete, preserve title/description during absorb, use millisecond
backup timestamps, add path.Clean to spaHandler. Frontend gains
checkedJSON() for resp.ok validation, consistent stopPropagation, and
shared renderCardSections() to eliminate duplicate rendering.
Foundation layer: entities table with card support, entity_tags join
table, WAL mode, busy_timeout, full CRUD operations including
promote/demote lifecycle and soft/hard delete. 33 tests passing.
lerko