feat(gateway): support multiple instances with --workspace and --config options

- Add --workspace/-w flag to specify workspace directory
- Add --config/-c flag to specify config file path
- Move cron store to workspace directory for per-instance isolation
- Enable running multiple nanobot instances simultaneously

README.md

@@ -884,6 +884,33 @@ MCP tools are automatically discovered and registered on startup. The LLM can us
 | `channels.*.allowFrom` | `[]` (allow all) | Whitelist of user IDs. Empty = allow everyone; non-empty = only listed users can interact. |
 
 
+## Multiple Instances
+
+Run multiple nanobot instances simultaneously, each with its own workspace and configuration.
+
+```bash
+# Instance A - Telegram bot
+nanobot gateway -w ~/.nanobot/botA -p 18791
+
+# Instance B - Discord bot
+nanobot gateway -w ~/.nanobot/botB -p 18792
+
+# Instance C - Using custom config file
+nanobot gateway -w ~/.nanobot/botC -c ~/.nanobot/botC/config.json -p 18793
+```
+
+| Option | Short | Description |
+|--------|-------|-------------|
+| `--workspace` | `-w` | Workspace directory (default: `~/.nanobot/workspace`) |
+| `--config` | `-c` | Config file path (default: `~/.nanobot/config.json`) |
+| `--port` | `-p` | Gateway port (default: `18790`) |
+
+Each instance has its own:
+- Workspace directory (MEMORY.md, HEARTBEAT.md, session files)
+- Cron jobs storage (`workspace/cron/jobs.json`)
+- Configuration (if using `--config`)
+
+
 ## CLI Reference
 
 | Command | Description |

nanobot/cli/commands.py

@@ -244,6 +244,8 @@ def _make_provider(config: Config):
 @app.command()
 def gateway(
     port: int = typer.Option(18790, "--port", "-p", help="Gateway port"),
+    workspace: str | None = typer.Option(None, "--workspace", "-w", help="Workspace directory (default: ~/.nanobot/workspace)"),
+    config: str | None = typer.Option(None, "--config", "-c", help="Config file path"),
     verbose: bool = typer.Option(False, "--verbose", "-v", help="Verbose output"),
 ):
     """Start the nanobot gateway."""
@@ -260,6 +262,14 @@ def gateway(
         import logging
         logging.basicConfig(level=logging.DEBUG)
 
+    # Load config from custom path if provided, otherwise use default
+    config_path = Path(config) if config else None
+    config = load_config(config_path)
+
+    # Override workspace if specified via command line
+    if workspace:
+        config.agents.defaults.workspace = workspace
+
     console.print(f"{__logo__} Starting nanobot gateway on port {port}...")
 
     config = load_config()
@@ -269,7 +279,8 @@ def gateway(
     session_manager = SessionManager(config.workspace_path)
 
     # Create cron service first (callback set after agent creation)
-    cron_store_path = get_data_dir() / "cron" / "jobs.json"
+    # Use workspace path for per-instance cron store
+    cron_store_path = config.workspace_path / "cron" / "jobs.json"
     cron = CronService(cron_store_path)
 
     # Create agent with cron service