feat: add new conversation command and enhance command handling

- Introduced the `/new` command to start a new conversation, resetting the history.
- Updated command handling in the CLI and various platform adapters (Discord, Slack, Telegram) to support the new command.
- Added help command functionality to list available commands, improving user guidance.
- Enhanced command mapping for better integration across platforms, ensuring consistent command behavior.

gateway/platforms/discord.py

@@ -366,6 +366,16 @@ class DiscordAdapter(BasePlatformAdapter):
             except Exception:
                 pass
 
+        @tree.command(name="new", description="Start a new conversation")
+        async def slash_new(interaction: discord.Interaction):
+            await interaction.response.defer(ephemeral=True)
+            event = self._build_slash_event(interaction, "/reset")
+            await self.handle_message(event)
+            try:
+                await interaction.followup.send("New conversation started~", ephemeral=True)
+            except Exception:
+                pass
+
         @tree.command(name="reset", description="Reset your Hermes session")
         async def slash_reset(interaction: discord.Interaction):
             await interaction.response.defer(ephemeral=True)
@@ -376,6 +386,48 @@ class DiscordAdapter(BasePlatformAdapter):
             except Exception:
                 pass
 
+        @tree.command(name="model", description="Show or change the model")
+        @discord.app_commands.describe(name="Model name (e.g. anthropic/claude-sonnet-4). Leave empty to see current.")
+        async def slash_model(interaction: discord.Interaction, name: str = ""):
+            await interaction.response.defer(ephemeral=True)
+            event = self._build_slash_event(interaction, f"/model {name}".strip())
+            await self.handle_message(event)
+            try:
+                await interaction.followup.send("Done~", ephemeral=True)
+            except Exception:
+                pass
+
+        @tree.command(name="personality", description="Set a personality")
+        @discord.app_commands.describe(name="Personality name. Leave empty to list available.")
+        async def slash_personality(interaction: discord.Interaction, name: str = ""):
+            await interaction.response.defer(ephemeral=True)
+            event = self._build_slash_event(interaction, f"/personality {name}".strip())
+            await self.handle_message(event)
+            try:
+                await interaction.followup.send("Done~", ephemeral=True)
+            except Exception:
+                pass
+
+        @tree.command(name="retry", description="Retry your last message")
+        async def slash_retry(interaction: discord.Interaction):
+            await interaction.response.defer(ephemeral=True)
+            event = self._build_slash_event(interaction, "/retry")
+            await self.handle_message(event)
+            try:
+                await interaction.followup.send("Retrying~", ephemeral=True)
+            except Exception:
+                pass
+
+        @tree.command(name="undo", description="Remove the last exchange")
+        async def slash_undo(interaction: discord.Interaction):
+            await interaction.response.defer(ephemeral=True)
+            event = self._build_slash_event(interaction, "/undo")
+            await self.handle_message(event)
+            try:
+                await interaction.followup.send("Done~", ephemeral=True)
+            except Exception:
+                pass
+
         @tree.command(name="status", description="Show Hermes session status")
         async def slash_status(interaction: discord.Interaction):
             await interaction.response.defer(ephemeral=True)

gateway/platforms/slack.py

@@ -327,13 +327,19 @@ class SlackAdapter(BasePlatformAdapter):
         user_id = command.get("user_id", "")
         channel_id = command.get("channel_id", "")
 
-        # Map common slash subcommands to gateway commands
-        if text in ("new", "reset"):
-            text = "/reset"
-        elif text == "status":
-            text = "/status"
-        elif text == "stop":
-            text = "/stop"
+        # Map subcommands to gateway commands
+        subcommand_map = {
+            "new": "/reset", "reset": "/reset",
+            "status": "/status", "stop": "/stop",
+            "help": "/help",
+            "model": "/model", "personality": "/personality",
+            "retry": "/retry", "undo": "/undo",
+        }
+        first_word = text.split()[0] if text else ""
+        if first_word in subcommand_map:
+            # Preserve arguments after the subcommand
+            rest = text[len(first_word):].strip()
+            text = f"{subcommand_map[first_word]} {rest}".strip() if rest else subcommand_map[first_word]
         elif text:
             pass  # Treat as a regular question
         else:

gateway/platforms/telegram.py

@@ -101,6 +101,23 @@ class TelegramAdapter(BasePlatformAdapter):
             await self._app.start()
             await self._app.updater.start_polling(allowed_updates=Update.ALL_TYPES)
             
+            # Register bot commands so Telegram shows a hint menu when users type /
+            try:
+                from telegram import BotCommand
+                await self._bot.set_my_commands([
+                    BotCommand("new", "Start a new conversation"),
+                    BotCommand("reset", "Reset conversation history"),
+                    BotCommand("model", "Show or change the model"),
+                    BotCommand("personality", "Set a personality"),
+                    BotCommand("retry", "Retry your last message"),
+                    BotCommand("undo", "Remove the last exchange"),
+                    BotCommand("status", "Show session info"),
+                    BotCommand("stop", "Stop the running agent"),
+                    BotCommand("help", "Show available commands"),
+                ])
+            except Exception as e:
+                print(f"[{self.name}] Could not register command menu: {e}")
+            
             self._running = True
             print(f"[{self.name}] Connected and polling for updates")
             return True