v1.36.190

fix(memory): reject existing non-array decision/lesson JSON before writes or duplicate success; retain syntax-error codes, absent-file backfill and read-only fallback

fix(memory): prepare JSON and Markdown before add/save/drop writes, including drop archives; preserve existing locks and I/O order without claiming multi-file transactions or lossless restore

test: cover memory input rejection and output preparation in source and installed consumers with normal CRUD, legacy and migration controls