🧪 Auto-PR: Merge develop → test - #988

Three admin tools were being dropped from every client session. Tool names are
constrained to `^[a-zA-Z0-9_-]{1,64}$`, and a name over the cap is not truncated
— the whole tool is rejected. Nothing on this side notices: the registry lists
it, the route answers fine over HTTP, and it is simply absent wherever the tools
are actually used.

  67  delete_admin_healthcare-users_userId_client-roles_clientId_roleName
  66  create_admin_healthcare-users_userId_federated-identities_provider
  66  delete_admin_healthcare-users_userId_federated-identities_provider

Over the cap, path PARAMETERS are dropped first. They are the least informative
part of a name — each one is already an argument in the tool's input schema,
described there — so shedding them keeps the segments that say what the tool
acts on:

  42  delete_admin_healthcare-users_client-roles
  50  create_admin_healthcare-users_federated-identities
  50  delete_admin_healthcare-users_federated-identities

Only if that still does not fit is the name cut and given a stable FNV-1a digest,
so it stays unique and identical across deploys. A name changing between deploys
would break saved client prompts, which is why the digest is deterministic rather
than crypto or counter based.

Names at or under the cap are returned byte-for-byte as before. The first cut of
this built the name from filtered path segments, which silently dropped the empty
segment of a trailing-slash route and would have renamed 30 live tools
(get_admin_profile_ -> get_admin_profile) to fix 3 unreachable ones. Verified
against the real 180-tool surface: exactly 3 names change, longest is still 61.

Dropping parameters can also make two routes agree on a name, and the registry is
a Map keyed by name — the second would have overwritten the first and a tool
would have vanished with no error anywhere. extractRouteTools now disambiguates
instead of overwriting.

The trailing underscores are left alone deliberately. They are ugly, and fixing
them is a rename of tools clients call today, so it belongs in its own change.