Task: Standup bot (1/4): Initialize

n8n workflow JSON:
{"id":111,"name":"Standup Bot - Initialize","nodes":[{"name":"On clicking 'execute'","type":"n8n-nodes-base.manualTrigger","position":[240,300],"parameters":{},"typeVersion":1},{"name":"Write Binary File","type":"n8n-nodes-base.writeBinaryFile","position":[880,300],"parameters":{"fileName":"/home/node/.n8n/standup-bot-config.json"},"typeVersion":1},{"name":"Move Binary Data","type":"n8n-nodes-base.moveBinaryData","position":[660,300],"parameters":{"mode":"jsonToBinary","options":{"encoding":"utf8","fileName":"standup-bot-config.json"}},"typeVersion":1},{"name":"Use Default Config","type":"n8n-nodes-base.set","position":[440,300],"parameters":{"values":{"string":[{"name":"config.slashCmdToken","value":"xxxxx"},{"name":"config.mattermostBaseUrl","value":"https://mattermost.yourdomain.tld"},{"name":"config.botUserToken","value":"xxxxx"},{"name":"config.n8nWebhookUrl","value":"https://n8n.yourdomain.tld/webhook/standup-bot/action/f6f9b174745fa4651f750c36957d674c"},{"name":"config.botUserId","value":"xxxxx"}]},"options":{},"keepOnlySet":true},"typeVersion":1}],"active":false,"settings":{},"connections":{"Move Binary Data":{"main":[[{"node":"Write Binary File","type":"main","index":0}]]},"Use Default Config":{"main":[[{"node":"Move Binary Data","type":"main","index":0}]]},"On clicking 'execute'":{"main":[[{"node":"Use Default Config","type":"main","index":0}]]}}}