Post-review cleanup round:
- leaf.go: required validation now matches leafArgs inclusion rules
(LeafInt explicit 0 / LeafInt64 <= 0 count as missing) via
leafHasEffectiveValue; fallback-chain candidates are judged after
TrimSpace when Trim is set so pure-whitespace values fall through.
- command_meta.go: drop catalogStringVal/catalogStringSliceVal in favor
of existing schemaString/schemaStringSlice.
- fetch_mcp_metadata: cross-owned canonicals skip name-coincidence
direct merges; the reviewed cross-server identity is the sole source.
玉澜
571eb20457