fix(trigger): require names for trigger creation

nanobot/channels/discord.py

@@ -218,13 +218,13 @@ if DISCORD_AVAILABLE:
                 command_text = f"/model {preset}" if preset else "/model"
                 await self._forward_slash_command(interaction, command_text)
 
-            @self.tree.command(name="trigger", description="Create a local trigger for this chat")
-            @app_commands.describe(name="Optional trigger name")
+            @self.tree.command(name="trigger", description="Create a named local trigger for this chat")
+            @app_commands.describe(name="Trigger name")
             async def trigger_command(
                 interaction: discord.Interaction,
-                name: str | None = None,
+                name: str,
             ) -> None:
-                name = (name or "").strip()
+                name = name.strip()
                 command_text = f"/trigger {name}" if name else "/trigger"
                 await self._forward_slash_command(interaction, command_text)
 

nanobot/channels/telegram.py

@@ -411,7 +411,7 @@ class TelegramChannel(BaseChannel):
         BotCommand("status", "Show bot status"),
         BotCommand("history", "Show recent conversation messages"),
         BotCommand("goal", "Start a sustained objective (long-running task)"),
-        BotCommand("trigger", "Create a local trigger for this chat"),
+        BotCommand("trigger", "Create a named local trigger"),
         BotCommand("pairing", "Manage DM pairing (approve/deny/list)"),
         BotCommand("model", "Switch runtime model preset"),
         BotCommand("skill", "List enabled skills"),

nanobot/command/builtin.py

@@ -83,10 +83,10 @@ BUILTIN_COMMAND_SPECS: tuple[BuiltinCommandSpec, ...] = (
     ),
     BuiltinCommandSpec(
         "/trigger",
-        "Create local trigger",
-        "Create a CLI trigger bound to this chat session.",
+        "Create named local trigger",
+        "Create a named CLI trigger bound to this chat session.",
         "zap",
-        "[name]",
+        "<name>",
     ),
     BuiltinCommandSpec(
         "/dream",
@@ -728,6 +728,18 @@ async def cmd_skill(ctx: CommandContext) -> OutboundMessage:
 
 async def cmd_trigger(ctx: CommandContext) -> OutboundMessage:
     """Create a local trigger bound to the current session."""
+    name = ctx.args.strip()
+    if not name:
+        return OutboundMessage(
+            channel=ctx.msg.channel,
+            chat_id=ctx.msg.chat_id,
+            content=(
+                "Usage: /trigger <name>\n\n"
+                "Create a named local trigger bound to this chat session."
+            ),
+            metadata={**dict(ctx.msg.metadata or {}), "render_as": "text"},
+        )
+
     from nanobot.triggers.store import ExternalTriggerStore
 
     loop = ctx.loop
@@ -741,7 +753,6 @@ async def cmd_trigger(ctx: CommandContext) -> OutboundMessage:
     if store is None:
         store = ExternalTriggerStore(workspace)
 
-    name = ctx.args.strip() or "External trigger"
     trigger = store.create(
         name=name,
         channel=ctx.msg.channel,