feat(02-02): create commands.py with /help and /start handlers

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/moai/bot/handlers/commands.py

@@ -0,0 +1,46 @@
+"""Basic command handlers for MoAI bot."""
+
+from telegram import Update
+from telegram.ext import ContextTypes
+
+HELP_TEXT = """
+*MoAI - Master of AIs*
+
+Multi-AI collaborative brainstorming platform.
+
+*Project Commands:*
+/projects - List all projects
+/project new "Name" - Create new project
+/project select <id|name> - Switch to project
+/project delete <id> - Delete project
+/project models claude,gpt - Set models
+/project info - Show current project
+
+*Discussion Commands:*
+/open <question> - Ask all models (parallel)
+/discuss [rounds] - Start discussion (default: 3)
+/next - Trigger next round
+/stop - Stop current discussion
+
+*Output Commands:*
+/consensus - Generate consensus summary
+/export - Export project as markdown
+
+*Utility:*
+/status - Show current state
+/help - Show this message
+""".strip()
+
+
+async def start_command(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
+    """Handle /start command - welcome message."""
+    await update.message.reply_text(
+        "Welcome to MoAI!\n\n"
+        "Use /help to see available commands.\n"
+        'Use /project new "Name" to create your first project.'
+    )
+
+
+async def help_command(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
+    """Handle /help command - show available commands."""
+    await update.message.reply_text(HELP_TEXT, parse_mode="Markdown")