Two sibling readers of raw config.mcp_servers duplicated their own (weaker)
shape guard: mcp-health.ts guarded the map but still passed null entries to
isUrlServer (crash on .url read), and the command palette re-implemented the
map check inline. Both now go through getServers(), the single choke point
that drops malformed entries, so a null entry can't crash the sweep and the
palette lists exactly the servers the MCP tab shows.
Also records the contributor email mapping for the salvaged commits.
Follow-up to the cherry-picked #94338.
9f2ab334c8