@staix/agent-mem v0.20.3

• Setup retires the pre-#145 capture command on a root change (#246, Refs #241). Replacing the install root also removes the prior root's ingest codex|kimi|qwen command written without --json, beside the current form, so an upgraded Qwen, Codex or Kimi no longer keeps a second SessionEnd ingest.
• A stale setup receipt refuses by name and is adopted explicitly (#246, Refs #241). A receipt is stale when it cannot restore, no spelling of its runtime's entry remains in its files (raw text or any decoded JSON/TOML string) and the live MCP entry launches another install root: the wiring was moved outside setup. Apply then refuses with cause setup_receipt_stale and writes nothing. amem setup <target> --apply --adopt-current keeps the receipt as <target>.json.stale-<UTC time> in the setup directory and applies through the receipt-less path, so --undo restores the adopted wiring. A receipt that still has any trace of its runtime stays authoritative. This replaces the manual receipt rename used on 2026-11-03.
• Compatibility with N-1 (0.20.2), #246: receipt format v1/v2 and undo semantics are unchanged, so 0.20.2 reads every receipt this release writes; it ignores *.json.stale-* files and has no --adopt-current. No memory format or floor changes.