fix: add zod as an external depth

[cherkanovart]

Summary

Fixes runtime errors from multiple Zod instances by marking zod as external in the CLI, spec, and compiler builds so a single Zod instance is used.

Changes

• packages/cli/tsup.config.ts — add "zod" to external so the CLI does not bundle Zod.
• packages/spec/tsup.config.ts — keep external: ["zod"] so the spec does not bundle Zod.
• packages/compiler/tsup.config.ts — keep external: ["zod"] so the compiler does not bundle Zod.
• Patch/minor bumps for lingo.dev, @lingo.dev/_spec, @lingo.dev/_compiler, and @lingo.dev/_sdk via changesets.

Testing

Business logic tests added:

• No new tests (build/config only). Existing tests should still pass.
• Manual check: install from packed tgz with overrides and run lingo.dev run --bucket json; no reading 'run' or _parseSync is not a function.
• All tests pass locally

Visuals

Required for UI/UX changes:

• N/A — build/config only, no UI changes.

Checklist

• Changeset added (if version bump needed)
• Tests cover business logic (not just happy path) — N/A for this build fix
• No breaking changes (or documented below)

Closes #--

Summary by CodeRabbit

• Chores
  • Updated build configuration and dependency ordering across packages for consistency.

[coderabbitai]

📝 Walkthrough

Walkthrough

Adds a changeset file announcing a patch release for lingo.dev and related packages and reorders existing zod entries inside several tsup.config.ts files; no functional code changes or exported API changes.

Changes

Cohort / File(s)	Summary
Changeset Announcement \.changeset/empty-release.md	New changeset added documenting a patch release across lingo.dev and @lingo.dev/* packages and noting zod as an external dependency.
Tsup config edits packages/cli/tsup.config.ts, packages/compiler/tsup.config.ts, packages/sdk/tsup.config.ts, packages/spec/tsup.config.ts	Reordered/moved the existing external: ["zod"] entries within the object literals; no additions/removals or behavior changes, only positional adjustments in the config files.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• fix: zod external #1949: Adds zod to external arrays in multiple tsup.config.ts files (closely related to these reordering edits).

Suggested reviewers

• vrcprl
• AndreyHirsa

Poem

🐇 A tiny changeset takes a hop,
Zod shuffled in—no code to stop.
Configs tidy, patch in view,
A quiet bump, a careful cue.

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Title check	❓ Inconclusive	The title mentions adding zod as external but contains a typo ('depth' instead of 'dependency') and is unclear whether it refers to the actual implementation achieved.	Clarify the title to accurately describe the change; consider 'fix: mark zod as external to prevent multiple instances' or similar.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description check	✅ Passed	The description comprehensively covers the summary, changes across all affected files, testing approach, and includes a completed checklist with changesets and no breaking changes noted.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix/zod-external

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