feat(twenty-sdk): extract & compile app translations into the manifest (#22236)

## Summary

**PR 2/4** of the app-metadata-translations stack. Gives app developers
the authoring side, as part of the normal manifest build — and it stays
out of the way of developers who don't translate.

- `twenty-sdk` CLI i18n pipeline: collect translatable strings from the
manifest, generate value-as-key message ids (`sha256(value)` truncated,
byte-identical to the server's `generateMessageId`), a `dev
i18n-extract` command to scaffold per-locale catalog files, and a
compile step folded into `build` that emits `manifest.translations`.
- Opt-in: no `locales/` dir → `compileApplicationTranslations` returns
`undefined` → manifest is unchanged.
- Adds an optional `locale` to the front-component execution context so
components can translate against the host locale.

## Stack
Stacks on #22235 (PR 1/4). Base branch:
`claude/app-translation-1-runtime-resolution`.

## Tests
Unit (vitest): extract/compile round-trip + message-id determinism.

## Verification note
`yarn install` could not complete in the remote dev environment, so
typecheck/lint/tests were not run locally — **CI is the source of
truth**.

https://claude.ai/code/session_01NiE7o3cd3zCLZarVkJa6UA

---
_Generated by [Claude
Code](https://claude.ai/code/session_01NiE7o3cd3zCLZarVkJa6UA)_

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packages/twenty-sdk/src/cli/operations/build.ts

@@ -7,6 +7,7 @@ import { runTypecheck } from '@/cli/utilities/build/common/typecheck-plugin';
 import { buildAndValidateManifest } from '@/cli/utilities/build/manifest/build-and-validate-manifest';
 import { manifestUpdateChecksums } from '@/cli/utilities/build/manifest/manifest-update-checksums';
 import { writeManifestToOutput } from '@/cli/utilities/build/manifest/manifest-writer';
+import { compileApplicationTranslations } from '@/cli/utilities/i18n/compile-application-translations';
 import { runSafe } from '@/cli/utilities/run-safe';
 import { APP_ERROR_CODES, type CommandResult } from '@/cli/types';
 
@@ -62,6 +63,8 @@ const innerAppBuild = async (
     onProgress?.('Generated cover image from logo');
   }
 
+  const translations = await compileApplicationTranslations(appPath);
+
   onProgress?.('Building application files...');
 
   const buildResult = await buildApplication({
@@ -95,7 +98,10 @@ const innerAppBuild = async (
     builtFileInfos: buildResult.builtFileInfos,
   });
 
-  await writeManifestToOutput(appPath, updatedManifest);
+  await writeManifestToOutput(
+    appPath,
+    translations ? { ...updatedManifest, translations } : updatedManifest,
+  );
 
   const outputDir = path.join(appPath, '.twenty', 'output');