parse_prefixed_name now matches the qualified mcp_<server>_<tool> name against
the set of registered server names (connections + configured servers) and
prefers the longest matching server name, instead of naively splitting on the
first underscore. Tools on servers whose names contain underscores (e.g.
"my_db") are now reachable, and an overlapping pair like "my" and "my_db"
routes to the correct server. Falls back to the legacy first-underscore split
when no registered server matches, preserving backward compatibility.
Harvested from PR #2747 by @cyq1017; supersedes the equivalent fix in PR #2746
by @puneetdixit200. Both contributors diagnosed and fixed issue #2744; #2747
landed for its longest-match tie-break test coverage. Fixes#2744.
Co-authored-by: cyq1017 <61975706+cyq1017@users.noreply.github.com>
Co-authored-by: puneetdixit200 <236133619+puneetdixit200@users.noreply.github.com>
Hunter B
9e29c221b9