Task: Report number of weekly created records in an app

n8n workflow JSON:
{"nodes":[{"id":"5eeb368d-737a-4186-afef-3072d0e9a1c7","name":"Schedule Trigger","type":"n8n-nodes-base.scheduleTrigger","notes":"Execute WF on a schedule","position":[940,280],"parameters":{"rule":{"interval":[{}]}},"notesInFlow":true,"typeVersion":1.1},{"id":"175f3ae0-6710-4934-b6c0-ebc21e26d0b5","name":"Notion","type":"n8n-nodes-base.notion","disabled":true,"position":[1220,80],"parameters":{"filters":{"conditions":[{"key":"Created time|created_time","condition":"on_or_after","createdTimeValue":"={{ $now.minus(7, 'days').toISOString() }}"}]},"options":{},"resource":"databasePage","matchType":"allFilters","operation":"getAll","databaseId":{"__rl":true,"mode":"list","value":"4ab15dec-f104-488e-936b-d14122106e7f","cachedResultUrl":"https://www.notion.so/4ab15decf104488e936bd14122106e7f","cachedResultName":"Product ideas list"},"filterType":"manual"},"credentials":{"notionApi":{"id":"5","name":"Notion account"}},"typeVersion":2},{"id":"8210582d-aae4-42b4-86d1-0513ad987c55","name":"Slack","type":"n8n-nodes-base.slack","notes":"Post message in channel","position":[2100,280],"parameters":{"text":"=Yay, we added *{{ $json.unique_count_id }} new UX ideas* in the last 7 days :tada:","select":"channel","channelId":{"__rl":true,"mode":"name","value":"#nik-wf-testing"},"otherOptions":{}},"credentials":{"slackApi":{"id":"6","name":"Idea Bot"}},"notesInFlow":true,"typeVersion":2},{"id":"7db1f3c1-d1c9-4f41-a873-0f083543b4b4","name":"Item Lists","type":"n8n-nodes-base.itemLists","position":[1800,280],"parameters":{"options":{},"operation":"summarize","fieldsToSummarize":{"values":[{"field":"id","aggregation":"countUnique"}]}},"typeVersion":2.2},{"id":"f6856a5e-d57d-43f4-986b-cd8439e4caa0","name":"Sticky Note","type":"n8n-nodes-base.stickyNote","position":[400,80],"parameters":{"width":424,"height":515.6050016413932,"content":"## 👋 How to use this template\nThis template shows how you can create reports on data in an app and share a summary in another app. Here's how to use it:\n\n1. Double click the `Slack` node and create a credential by signing in.\n2. Change the channel name in the `Slack` node to a channel you have in Slack.\n2. Click the `Execute Workflow` button and double click the nodes to see the input and output data\n\n### To customize it to you needs, just do the following:\n1. Enable or exchange the `Notion` node with any service that fits your use case.\n2. Change the `2. Filter and transform your data` section to fit your needs\n3. Adjust the Slack node or exchange it with any node that fits your use case\n4. Disable or remove the `Mock Data` node\n"},"typeVersion":1},{"id":"13386afe-01c2-4f6e-b9d5-8fc485353ff9","name":"Sticky Note2","type":"n8n-nodes-base.stickyNote","position":[2040,220],"parameters":{"width":317.52886836027733,"height":373.04798303066787,"content":"### 3. Notify the right channel\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nFinally, we're sending a message to the `#ideas-overview` channel in Slack.\n\n**You can replace this node with any service like [Teams](https://docs.n8n.io/integrations/builtin/app-nodes/n8n-nodes-base.microsoftteams/?utm_source=n8n_app&utm_medium=node_settings_modal-credential_link&utm_campaign=n8n-nodes-base.microsoftTeams), [Telegram](https://docs.n8n.io/integrations/builtin/app-nodes/n8n-nodes-base.telegram/?utm_source=n8n_app&utm_medium=node_settings_modal-credential_link&utm_campaign=n8n-nodes-base.telegram), [Email](https://docs.n8n.io/integrations/builtin/core-nodes/n8n-nodes-base.sendemail/?utm_source=n8n_app&utm_medium=node_settings_modal-credential_link&utm_campaign=n8n-nodes-base.emailSend) etc.**"},"typeVersion":1},{"id":"1b4108e0-9e91-4b4e-a4cf-75366d7c82c0","name":"Sticky Note1","type":"n8n-nodes-base.stickyNote","position":[860,180],"parameters":{"width":282,"height":415.1692017070486,"content":"### 1. Define a trigger that should start your wofklow\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nWe added a `Schedule trigger` that starts the workflow once a week. \n\n**Double click the node to modify when it runs**"},"typeVersion":1},{"id":"ba3eb63f-bdcd-4a58-949a-2d24d4c872c4","name":"Sticky Note3","type":"n8n-nodes-base.stickyNote","position":[1160,0],"parameters":{"width":348,"height":597.3550016413941,"content":"### 2. Load your data\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nIn our example, we're getting all new entries from a `Notion` Database in which we save new product ideas.\n\n**You can replace product ideas with any data that you want to summarize any service you wish, like [Jira](https://docs.n8n.io/integrations/builtin/app-nodes/n8n-nodes-base.jira/?utm_source=n8n_app&utm_medium=node_settings_modal-credential_link&utm_campaign=n8n-nodes-base.jira), [Airtable](https://docs.n8n.io/integrations/builtin/app-nodes/n8n-nodes-base.airtable/?utm_source=n8n_app&utm_medium=node_settings_modal-credential_link&utm_campaign=n8n-nodes-base.airtable), [Google Sheets](https://docs.n8n.io/integrations/builtin/app-nodes/n8n-nodes-base.googlesheets/?utm_source=n8n_app&utm_medium=node_settings_modal-credential_link&utm_campaign=n8n-nodes-base.googleSheets) etc.**"},"typeVersion":1},{"id":"9ec65fe7-3264-4437-a1bf-3bdec1c886fe","name":"Sticky Note8","type":"n8n-nodes-base.stickyNote","position":[1540,160],"parameters":{"width":462,"height":444.12384956830226,"content":"### 2. Filter and transform your data\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nWe only want to count the UX ideas of the team. We use the `Filter` node to filter out all other items, and use the `Item Lists` node to summarize the data for us.\n\nTo edit the nodes, simply drag and drop input data into the fields or change the values directly. **n8n comes with a set of powerful transformation and branching tools like [Set](https://docs.n8n.io/integrations/builtin/core-nodes/n8n-nodes-base.set/?utm_source=n8n_app&utm_medium=node_settings_modal-credential_link&utm_campaign=n8n-nodes-base.set), [ItemList](https://docs.n8n.io/integrations/builtin/core-nodes/n8n-nodes-base.itemlists/?utm_source=n8n_app&utm_medium=node_settings_modal-credential_link&utm_campaign=n8n-nodes-base.itemLists), [Code](https://docs.n8n.io/integrations/builtin/core-nodes/n8n-nodes-base.code/?utm_source=n8n_app&utm_medium=node_settings_modal-credential_link&utm_campaign=n8n-nodes-base.code), [If](https://docs.n8n.io/integrations/builtin/core-nodes/n8n-nodes-base.if/?utm_source=n8n_app&utm_medium=node_settings_modal-credential_link&utm_campaign=n8n-nodes-base.if)  and many more.**"},"typeVersion":1},{"id":"5597d8bb-ae15-4ea0-be16-531d8a8f7018","name":"Filter","type":"n8n-nodes-base.filter","notes":"Only keep UX ideas","position":[1600,280],"parameters":{"conditions":{"boolean":[{"value1":"={{ $json.property_type.includes(\"UX\") }}","value2":true}]}},"notesInFlow":true,"typeVersion":1},{"id":"e4a13d15-368f-42a5-b23a-736883e7c1aa","name":"Code","type":"n8n-nodes-base.code","notes":"Mock Data","position":[1220,280],"parameters":{"jsCode":"return [\n  {\n    \"id\": \"32cb4a89-7735-497d-8862-fc66cb6383f2\",\n    \"name\": \"Promote credential test result to NDV, + run on NDV first open\",\n    \"url\": \"https://www.notion.so/Promote-credential-test-result-to-NDV-run-on-NDV-first-open-32cb4a897735497d8862fc66cb6383f2\",\n    \"property_tags\": [],\n    \"property_priority\": 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