fix: use CliExitError for invalid load path errors

[theoephraim]

Summary

• Invalid load path errors in loadVarlockEnvGraph now throw CliExitError instead of using console.error + gracefulExit, for consistent error handling across the CLI
• Fix missing trailing comma in type-generation.ts

Test plan

• Run varlock load --path /nonexistent and verify the error is formatted consistently with other CLI errors
• Run varlock load with an invalid varlock.loadPath in package.json and verify the same

🤖 Generated with Claude Code

[changeset-bot]

🦋 Changeset detected

Latest commit: fc54f38

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

This PR includes changesets to release 12 packages

Name	Type
varlock	Patch
@varlock/astro-integration	Patch
@varlock/nextjs-integration	Patch
@varlock/vite-integration	Patch
@varlock/1password-plugin	Patch
@varlock/aws-secrets-plugin	Patch
@varlock/azure-key-vault-plugin	Patch
@varlock/bitwarden-plugin	Patch
@varlock/google-secret-manager-plugin	Patch
@varlock/hashicorp-vault-plugin	Patch
@varlock/infisical-plugin	Patch
@varlock/pass-plugin	Patch

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commit: fc54f38