refactor: Major upgrade to v5.1b6 - AWS SSM support & Distributed Architecture

Core & Protocols:
- Native AWS SSM support added (aws ssm start-session).
- Improved Pexpect logic for ssm, kubectl, and docker.
- Cleaned connection success messages (omitting ports for non-IP protocols).

gRPC Layer:
- Migrated gRPC modules to 'connpy/grpc_layer/'.
- Implemented dynamic node naming (e.g. ssm-i-xxxx@aws) for accurate server-side logging.
- Added automatic sys.path resolution for gRPC generated modules.
- Enhanced InteractNode response with initial connection status.

Printer & Concurrency:
- Implemented ThreadLocalStream for isolated thread-safe output.
- Self-healing Console objects to prevent 'closed file' errors in test/async environments.
- Capture clean plugin output in remote executions.

AI & Services:
- Improved tool registration and debug visualization.
- Restored native dictionary returns for AI tools to fix Web UI rendering.
- Increased backup retention to 100 copies in SyncService.
- Silenced noisy auto-sync CLI messages.

Quality & Docs:
- Total tests: 267 (all passing).
- New test suites for gRPC layer and printer concurrency.
- Updated .gitignore to exclude internal planning docs.
- Full technical documentation regenerated with pdoc.

connpy/connapp.py

@@ -445,8 +445,19 @@ class connapp:
 
         try:
             if args.subcommand in getattr(self.plugins, "remote_plugins", {}):
+                import json as _json
                 for chunk in self.services.plugins.invoke_plugin(args.subcommand, args):
-                    print(chunk, end="", flush=True)
+                    if "__interact__" in chunk:
+                        try:
+                            data = _json.loads(chunk.strip())
+                            params = data.get("__interact__")
+                            if params:
+                                self.services.nodes.connect_dynamic(params, debug=getattr(args, 'debug', False))
+                                break
+                        except (ValueError, KeyError):
+                            print(chunk, end="", flush=True)
+                    else:
+                        print(chunk, end="", flush=True)
             elif args.subcommand in self.plugins.plugins:
                 self.plugins.plugins[args.subcommand].Entrypoint(args, self.plugins.plugin_parsers[args.subcommand].parser, self)
             else: