Merge tls into master: bring in subscription ownership, keep all TLS/stability work

tls and master diverged from a July 2024 fork point and never
reconciled - tls carries ~19 months of real socket/TLS stability
fixes (uninitialized tlsInfo, TCPServer::connectionRequest()
unconditionally initializing TLS, the WANT_READ write busy-spin, the
console authentication fix from this session), while master
independently picked up a Subscription/SubscriptionManager rework
(MString-based ownership tracking: owner/ownership/selection/time
fields and a working subscriptionOwner() method) that tls never had.

Every file both branches touched was resolved by keeping tls's side
entirely (Command.h, Socket.cpp, TCPServer.h, TCPSession.cpp/h,
TCPSocket.h were pure reformatting on master's side, or an
alternate/superseded fix for a bug tls already fixed a different way -
e.g. master's TCPSession uuid/alias handling vs tls's existing
uuid_unparse-based fix), with two deliberate exceptions:

- TCPServer.cpp's constructor was missing the
  commands.add(subscriptions, "publish"/"subscribe"/"catalog"/...)
  wiring master had - without it, SubscriptionManager existed but was
  completely unreachable through the normal command dispatch. Restored
  on top of tls's TLS-aware constructor.

- SubscriptionManager.cpp's "invite" command handler had a real
  incompatibility: master's version assigned into an `invitee` member
  typed as coreutils::MString via a stray `(coreutils::MString *)`
  cast that doesn't match the member's actual (non-pointer) type, and
  called session.server.getSessionByAlias() against a TCPServer
  reference - tls made TCPSession::server a pointer (part of removing
  the separate TCPSession2 class), so that call site no longer
  compiles as written. Took tls's cleaner local-variable version
  instead (functionally identical - looks up a session by alias and
  forwards an invite message) and removed the now-unused `invitee`
  member from SubscriptionManager.h.

One additional compile fix needed after resolving conflicts:
Subscription::subscriptionOwners is an MString (master's ownership
design), but TCPSession::alias is void* (tls's identity mechanism,
unchanged and depended on elsewhere) - MString has an implicit
constructor from void* already used successfully elsewhere in this
same file (the "publish" handler's Subscription constructor call),
but operator== doesn't accept the same implicit conversion, so
removeSessionSubscriptions()'s ownership check needed an explicit
coreutils::MString(session.alias) construction to compile.

Also drops output/main (a stray checked-in compiled binary, already
removed on tls) and the doxygen docs/html output (already removed on
tls, was carried on master since the fork).

Verified: full ServerCore rebuild (./compile) succeeds with zero
errors or warnings beyond the one compile fix documented above.

TCPServer.h.pre-tlsaccept-fix-20260831

@@ -0,0 +1,151 @@
+#ifndef __TCPServer_h__
+# define __TCPServer_h__
+
+# include "Command.h"
+# include "CommandList.h"
+# include "IPAddressList.h"
+# include "Socket.h"
+# include "SubscriptionManager.h"
+# include "TCPSession.h"
+# include "TCPSocket.h"
+# include "TLSInfo.h"
+
+namespace core {
+   
+   ///
+   /// TCPServer
+   ///
+   /// Manage a socket connection as a TCP server type. Connections to the socket are processed through
+   /// the accept functionality.
+   ///
+   /// A list of connections is maintained in a vector object.
+   ///
+   /// This object extends the Command object as well so it can be added to a Console object and
+   /// process commands to display status information.
+   ///
+   
+   class TCPServer : public TCPSocket, public Command {
+      
+    public:
+      
+      ///
+      /// The constructor for the TCPServer object.
+      ///
+      /// @param ePoll the EPoll instance that manages the socket.
+      /// @param url the IP address for the socket to receive connection requests.
+      /// @param port the port number that the socket will listen on.
+      /// @param commandName the name of the command used to invoke the status display for this object.
+      ///
+      
+      TCPServer(EPoll &ePoll, IPAddress address, TLSInfo *tlsInfo, std::string delimiter = " ", int depth = 10, std::string text = "");
+      
+      ///
+      /// The destructor for this object.
+      ///
+      
+      virtual ~TCPServer();
+      
+      virtual void sessionErrorHandler(std::string errorString, std::stringstream &out);
+      
+      ///
+      /// getSocketAccept is designed to allow a polymorphic extension of this object to
+      /// return a type of object that extends the definition of the server socket.
+      /// Returning the appropriate session object that extends from Session provides
+      /// the mechanism where the server can select the protocol dialog for the desired
+      /// service.
+      ///
+      
+      virtual TCPSession *getSocketAccept(EPoll &epoll);
+      
+      ///
+      /// The list of sessions that are currently open and being maintained by this object.
+      ///
+      
+      std::vector<TCPSession *> sessions;
+      
+      ///
+      /// The commands object is a CommandList and is used to store Command objects to be
+      /// parsed and run as data comes into the session.
+      ///
+      
+      CommandList commands;
+      
+      ///
+      /// If not NULL the blacklist object can be assigned to this server socket and the server
+      /// IP addresses connecting to the server attempting to accept a socket are contained in
+      /// this list then the connection is rejected and no accept is granted.
+      ///
+      
+      IPAddressList *blackList;
+      
+      ///
+      /// If not NULL the blacklist object can be assigned to this server socket and the server
+      /// IP addresses connecting to the server attempting to accept a socket are contained in
+      /// this list then the connection is rejected and no accept is granted.
+      ///
+      
+      IPAddressList *whiteList;
+      
+      void removeFromSessionList(TCPSession *session);
+      
+      void output(std::stringstream &out); ///< Output the consoles array to the console.
+      
+      ///
+      ///
+      ///
+      
+      void sendToAll(std::stringstream &out);
+      
+      ///
+      /// Use this sendToAll method to output the contents of the out stream
+      /// to all the connections on the server excluding the sender session.
+      ///
+      
+      void sendToAll(std::stringstream &out, TCPSession &sender, SessionFilter filter);
+      
+      ///
+      /// Use this sendToAll method to output the contents of the out stream
+      /// to all the connections on the server excluding the sender session
+      /// and the entries identified by the passed in filter object.
+      ///
+      
+      void sendToAll(std::stringstream &out, TCPSession &sender);
+      
+      ///
+      /// The Subscription Manager tracks all subscriptions on the server.
+      ///
+      
+      SubscriptionManager subscriptions;
+      
+      ///
+      /// Use the getSessionByAlias to retrieve a session pointer by the value
+      /// of the alias pointer.
+      ///
+      
+      TCPSession *getSessionByAlias(void *alias);
+      
+    protected:
+      ///
+      /// This method is called by the lower socket when a connection request comes into
+      /// the listening and bound server port.
+      ///
+      
+      void connectionRequest() override;
+      
+      ///
+      /// This method is called when the Command associated with this object is requested
+      /// because a user has typed in the associated command name on a command entry line.
+      ///
+      /// @param the session object to write the output to.
+      ///
+      
+      int processCommand(coreutils::ZString &request, TCPSession &session) override;
+      
+    private:
+      TCPSession *accept();
+      std::mutex lock;
+   };
+   
+}
+
+#endif