fix: protocol validator allows REQUEST without :target if :source is present

- Relax validate-communication-protocol-schema to accept :REQUEST messages without
  :target when :source is present in :meta (reason-gate infers target from source).
- This preserves 'equality of clients' — gateways don't duplicate routing logic.
- Add communication-validator to ASD components.
- Fixes TCP CLI gateway integration: clients can now connect and receive responses.
- Verified with test client: 13/13 skills load, Perceive gate processes messages.

opencortex.asd

@@ -9,6 +9,7 @@
   :components ((:file "library/package")
                (:file "library/skills")
                (:file "library/communication")
+               (:file "library/communication-validator")
                (:file "library/memory")
                (:file "library/context")
                (:file "library/perceive")