Félix Malfait
38fbff465f
Follow-up to #22417, per [this thread](https://github.com/twentyhq/twenty/pull/22417#discussion_r3512187719): migrate the `2-20/README.md` placeholder into a real command using the `TWENTY_NEXT_VERSIONS` mechanism. ### What - Add `DropMetadataStandardOverridesColumnFastInstanceCommand`, registered against `2.20.0`. It boots (`2.20.0` is in `TWENTY_ALL_VERSIONS`) but stays **dormant** — the upgrade sequence only runs `TWENTY_CROSS_UPGRADE_SUPPORTED_VERSIONS` (previous + current), so it never executes during the 2.19 deploy and activates automatically when `nx version:bump` promotes 2.20 to current. - Name constant + unit test (SQL parity, registration against `2.20.0`, name-constant parity). - Register it in `instance-commands.constant.ts`. - Update the `standardOverrides` `@deprecated` comments on object/field metadata to point at the shipped command. - Delete `2-20/README.md`. - Document the "ship a command for a future version" flow in `docs/UPGRADE_COMMANDS.md` and `.cursor/rules/server-migrations.mdc` (the mechanism was previously undocumented). ### Note / correction to the README's plan The old README implied both the command **and** `@WasRemovedInUpgrade` could be added at 2.20 time. Only the command can ship now: the decorator's validator runs against the active sequence, so referencing a still-dormant 2.20 step fails boot with `unknown-step-name`. So the entity keeps its `WasRemovedInUpgrade<T>` type wrapper for now; the decorator gets wired (one line, via the name constant) once 2.20 is current — same deferred-drop shape as `isUIReadOnly`. ### Verification Could not run `jest`/`typecheck`/`lint` in this environment: `yarn install` is blocked by egress policy on a git-based transitive dep (`github.com/electron/node-gyp.git`). Verified by review against the sibling 2-19 add-column and 2-12 drop commands. **Please let CI run before merge.** https://claude.ai/code/session_01KMArJvdEmsX3eAmJLbS1b6 --- _Generated by [Claude Code](https://claude.ai/code/session_01KMArJvdEmsX3eAmJLbS1b6)_ <!-- This is an auto-generated description by cubic. --> <a href="https://cubic.dev/pr/twentyhq/twenty/pull/22448?utm_source=github" target="_blank" rel="noopener noreferrer" data-no-image-dialog="true"><picture><source media="(prefers-color-scheme: dark)" srcset="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"><source media="(prefers-color-scheme: light)" srcset="https://www.cubic.dev/buttons/review-in-cubic-light.svg"><img alt="Review in cubic" src="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"></picture></a> <!-- End of auto-generated description by cubic. -->
The #1 Open-Source CRM
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Why Twenty
Twenty gives technical teams the building blocks for a custom CRM that meets complex business needs and quickly adapts as the business evolves. Twenty is the CRM you build, ship, and version like the rest of your stack.
Learn more about why we built Twenty
Installation
Cloud
The fastest way to get started. Sign up at twenty.com and spin up a workspace in under a minute, with no infrastructure to manage and always up to date.
Build an app
Scaffold a new app with the Twenty CLI:
npx create-twenty-app my-app
Define objects, fields, and views as code:
import { defineObject, FieldType } from 'twenty-sdk/define';
export default defineObject({
nameSingular: 'deal',
namePlural: 'deals',
labelSingular: 'Deal',
labelPlural: 'Deals',
fields: [
{ name: 'name', label: 'Name', type: FieldType.TEXT },
{ name: 'amount', label: 'Amount', type: FieldType.CURRENCY },
{ name: 'closeDate', label: 'Close Date', type: FieldType.DATE_TIME },
],
});
Then ship it to your workspace:
npx twenty app:publish --private
See the app development guide for objects, views, agents, and logic functions.
Self-hosting
Run Twenty on your own infrastructure with Docker Compose, or contribute locally via the local setup guide.
Everything you need
Twenty gives you the building blocks of a modern CRM (objects, views, workflows, and agents) and lets you extend them as code. Here's a tour of what's in the box.
Want to go deeper? Read the 
User Guide for product walkthroughs, or the Documentation for developer reference.
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TypeScript
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