feat: add distributed async dataset with unix socket server and refactor agent communication bus

Implement AsyncDataSet class supporting client-server model over Unix sockets with SQLite backend, including KV store, table management, and concurrent query handling. Rename `get_messages` to `receive_messages` in AgentCommunicationBus and update all callers. Remove deprecated `get_recommended_agent` function from agent_roles, `invalidate_tool` from tool_cache, and legacy `receive_messages` wrapper. Add multiplexer command routing in handlers with `/prompt` command support. Introduce comprehensive help documentation system for workflows. Update default API URLs to production endpoints and refactor adaptive context window calculation in AdvancedContextManager.

pr/commands/handlers.py

@@ -1,6 +1,7 @@
 import json
 import time
 
+from pr.commands.multiplexer_commands import MULTIPLEXER_COMMANDS
 from pr.autonomous import run_autonomous_mode
 from pr.core.api import list_models
 from pr.tools import read_file
@@ -13,6 +14,12 @@ def handle_command(assistant, command):
     command_parts = command.strip().split(maxsplit=1)
     cmd = command_parts[0].lower()
 
+    if cmd in MULTIPLEXER_COMMANDS:
+        # Pass the assistant object and the remaining arguments to the multiplexer command
+        return MULTIPLEXER_COMMANDS[cmd](
+            assistant, command_parts[1:] if len(command_parts) > 1 else []
+        )
+
     if cmd == "/edit":
         rp_editor = RPEditor(command_parts[1] if len(command_parts) > 1 else None)
         rp_editor.start()
@@ -23,6 +30,18 @@ def handle_command(assistant, command):
         if task:
             run_autonomous_mode(assistant, task)
 
+    elif cmd == "/prompt":
+        rp_editor = RPEditor(command_parts[1] if len(command_parts) > 1 else None)
+        rp_editor.start()
+        rp_editor.thread.join()
+        prompt_text = str(rp_editor.get_text())
+        rp_editor.stop()
+        rp_editor = None
+        if prompt_text.strip():
+            from pr.core.assistant import process_message
+
+            process_message(assistant, prompt_text)
+
     elif cmd == "/auto":
         if len(command_parts) < 2:
             print(f"{Colors.RED}Usage: /auto [task description]{Colors.RESET}")