docs: @phone and isPhone

[sanny-io]

Summary by CodeRabbit

• Documentation
  • Updated ZModel input validation reference documentation with new @phone attribute for string field validation, supporting E.164 phone number format
  • Added documentation for isPhone() helper utility function to programmatically validate E.164 phone numbers on string fields

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: e609bdc4-77bf-4307-afe3-1713e36a5cc6

📥 Commits

Reviewing files that changed from the base of the PR and between 69129cc and a425d24.

📒 Files selected for processing (1)

• docs/reference/zmodel/input-validation.md

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Walkthrough

Documentation for phone number validation support was added to the ZModel input validation reference. The @phone field attribute and isPhone() helper function are now documented for validating E.164 phone numbers.

Changes

Phone number validation documentation

Layer / File(s)	Summary
Phone validation attribute and helper function documentation docs/reference/zmodel/input-validation.md	Added documentation for the @phone field-level attribute with optional message parameter and the isPhone() helper function for validating E.164 phone numbers.

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🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The PR title directly and concisely summarizes the main change: documentation for two new validation features (@phone attribute and isPhone function).
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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