feat: add /debug slash command for all platforms

Adds /debug as a slash command available in CLI, Telegram, Discord,
Slack, and all other gateway platforms. Uploads debug report + full
logs to paste services and returns shareable URLs.

- commands.py: CommandDef in Info category (no cli_only/gateway_only)
- gateway/run.py: async handler with run_in_executor for blocking I/O
- cli.py: dispatch in process_command to run_debug_share

cli.py

@@ -5391,6 +5391,8 @@ class HermesCLI:
             self._show_usage()
         elif canonical == "insights":
             self._show_insights(cmd_original)
+        elif canonical == "debug":
+            self._handle_debug_command()
         elif canonical == "paste":
             self._handle_paste_command()
         elif canonical == "image":
@@ -6305,6 +6307,14 @@ class HermesCLI:
         except Exception as e:
             print(f"  ❌ Compression failed: {e}")
 
+    def _handle_debug_command(self):
+        """Handle /debug — upload debug report + logs and print paste URLs."""
+        from hermes_cli.debug import run_debug_share
+        from types import SimpleNamespace
+
+        args = SimpleNamespace(lines=200, expire=7, local=False)
+        run_debug_share(args)
+
     def _show_usage(self):
         """Show rate limits (if available) and session token usage."""
         if not self.agent: