handle forward migrations

[samuelstroschein]

Note

Introduces forward-migration safety via project metadata and conditional regeneration of generated files.

• New project.inlang/.meta.json storing highestSdkVersion; written by saveProjectToDirectory and read via readProjectMeta
• loadProjectFromDirectory compares versions (compareSemver, pickHighestVersion) and, if older, refreshes .gitignore and README.md (without exporting) using skipExporting; if newer, leaves files untouched
• Extracted path helpers to path-helpers.ts (absolutePathFromProject, withAbsolutePaths); updated imports
• Added semver/metadata utilities in meta.ts with tests; extensive tests for meta behavior and conditional file writes
• README template updated (removed inline comment); .gitignore content adjusted and conditionally written
• New skipExporting option in saveProjectToDirectory to update metadata only

^{Written by Cursor Bugbot for commit 19782a4. This will update automatically on new commits. Configure here.}

[changeset-bot]

🦋 Changeset detected

Latest commit: 19782a4

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 7 packages

Name	Type
@inlang/sdk	Minor
@inlang/cli	Patch
@inlang/plugin-i18next	Patch
@inlang/plugin-m-function-matcher	Patch
@inlang/plugin-t-function-matcher	Patch
@inlang/rpc	Patch
@inlang/editor-component	Major

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