feat(core): #656 remove legacy schema def and zod as dependency

[sdorra]

Remove deprecated legacy schema definition.
Remove zod as dependency to avoid conflicts.
For internal schema validation we use an embedded zod-mini.
Use __cc_import string instead of a symbol for static imports.

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🦋 Changeset detected

Latest commit: 04e6dab

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

This PR includes changesets to release 1 package

Name	Type
@content-collections/core	Minor

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Project	Deployment	Preview	Comments	Updated (UTC)
content-collections	Ready	Preview	Comment	Oct 30, 2025 1:55pm

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commit: d91b426

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.07%. Comparing base (ab4d7d1) to head (04e6dab).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #668      +/-   ##
==========================================
+ Coverage   95.76%   96.07%   +0.30%     
==========================================
  Files          17       18       +1     
  Lines        1181     1274      +93     
  Branches      239      242       +3     
==========================================
+ Hits         1131     1224      +93     
  Misses         50       50              

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