## Sync page layouts, tabs, and widgets
Adds the ability for SDK applications to synchronize `pageLayout`,
`pageLayoutTab`, and `pageLayoutWidget` entities, following the same
pattern established in #18003 for views and navigation menu items.
### Changes
**`twenty-shared`**
- New `PageLayoutManifest`, `PageLayoutTabManifest`, and
`PageLayoutWidgetManifest` types with a hierarchical structure (page
layout → tabs → widgets)
- Added `pageLayouts: PageLayoutManifest[]` to the `Manifest` type
**`twenty-sdk`**
- New `definePageLayout()` SDK function with validation for
universalIdentifier, name, and nested tabs/widgets
- Wired into the manifest extraction and build pipeline
(`DefinePageLayout` target function, `PageLayouts` entity key)
- Exported from the SDK entry point
**`twenty-server`**
- Added `pageLayout`, `pageLayoutTab`, `pageLayoutWidget` to
`APPLICATION_MANIFEST_METADATA_NAMES`
- New conversion utilities: manifest → universal flat entity for all
three entity types
- Updated `computeApplicationManifestAllUniversalFlatEntity
## Summary
https://github.com/user-attachments/assets/1e75cc9d-d9d2-4ef2-99f9-34450f5d8de7
Add background incremental type checking (`tsc --watch`) to the SDK dev
mode, so type regressions are caught when the generated API client
changes — without requiring a full rebuild of source files.
Previously, removing a field from the data model would regenerate the
API client, but existing front components/logic functions referencing
the removed field wouldn't surface type errors (since their source
didn't change, esbuild wouldn't rebuild them).
## What changed
- **Background `tsc --watch`**: a long-lived TypeScript watcher runs
alongside esbuild watchers, incrementally re-checking all files when the
generated client changes. Only logs on state transitions (errors appear
/ errors clear) to stay quiet.
- **Atomic client generation**: API client is now generated into a temp
directory and swapped in atomically, avoiding a race condition where
`tsc --watch` could see an empty `generated/` directory
mid-regeneration.
- **Step decoupling**: orchestrator steps no longer receive
`uploadFilesStep` directly. Instead, they use callbacks (`onFileBuilt`,
`onApiClientGenerated`), and each step manages its own `builtFileInfos`
state.
- **`apiClientChecksum` omitted from `ApplicationConfig`**: it's a
build-time computed value, same as `packageJsonChecksum`.
<img width="327" height="177" alt="image"
src="https://github.com/user-attachments/assets/02bd25bb-fa41-42b0-8d96-01c51bd4580c"
/>
<img width="529" height="452" alt="image"
src="https://github.com/user-attachments/assets/61f6e968-365b-4a5b-8f2b-a8419d6b1bd3"
/>
## Add API client generation to SDK dev mode and refactor orchestrator
into step-based pipeline
### Why
The SDK dev mode lacked typed API client generation, forcing developers
to work without auto-generated GraphQL types when building applications.
Additionally, the orchestrator was a monolithic class that mixed watcher
management, token handling, and sync logic — making it difficult to
extend with new steps like client generation.
### How
- **Refactored the orchestrator** into a step-based pipeline with
dedicated classes: `CheckServer`, `EnsureValidTokens`,
`ResolveApplication`, `BuildManifest`, `UploadFiles`,
`GenerateApiClient`, `SyncApplication`, and `StartWatchers`. Each step
has typed input/output/status, managed by a new `OrchestratorState`
class.
- **Added `GenerateApiClientOrchestratorStep`** that detects
object/field schema changes and regenerates a typed GraphQL client (via
`@genql/cli`) into `node_modules/twenty-sdk/generated` for seamless
imports.
- **Replaced `checkApplicationExist`** with `findOneApplication` on both
server resolver and SDK API service, returning the entity data instead
of a boolean.
- **Added application token pair mutations**
(`generateApplicationToken`, `renewApplicationToken`) to the API
service, with the server now returning `ApplicationTokenPairDTO`
containing both access and refresh tokens.
- **Restructured the dev UI** into `dev/ui/components/` with dedicated
panel, section, and event log components.
- **Simplified `AppDevCommand`** from ~180 lines of watcher management
down to ~40 lines that delegate entirely to the orchestrator.
martmull