NewDirectCommand was hard-coding cobra.NoArgs for envelope-generated
leaf commands that have no positional bindings (totalMax == 0). This
is stricter than cobra's own default — legacyArgs (args.go:30-32)
returns nil for any command without subcommands.
The strict behavior surfaced as "unknown command \"<word>\" for
\"dws aisearch person\"" whenever an AI agent passed trailing
positional words after a leaf, e.g.
dws aisearch person search --keyword "张"
dws aisearch person user search --keyword "张"
Switching to cobra.ArbitraryArgs restores cobra's natural leaf
behavior: trailing positional args are silently ignored. Existing
positional-binding paths (MinimumNArgs / RangeArgs / MaximumNArgs)
are unchanged.
Verified against dws-wukong/auto-test/cli_to_mcp/testcases on
aiapp / live / aisearch: 50/50 pass (was 48/50; the 2 remaining
failures were the F-class extra-positional-args tolerance cases
this commit fixes).
修雨
f497047fff