docs: add regex syntax details to full-text search docs

[JKDasondee]

Summary

Addresses #5118 by adding regex documentation details to the full-text search page and the Cloud quotas page.

Changes to docs/querying-collections/full-text-search.mdx:

• New "Regex Syntax" section documenting:
  • 3-character minimum pattern length
  • Cloud max length (256 bytes) vs no limit on self-hosted
  • Rust regex crate with link to full syntax reference
  • Unsupported features: lookaheads, lookbehinds, byte patterns
  • Performance tip: include literal substrings for faster regex scans
• Complex example in all three language tabs (Python, TypeScript, Rust) combining $regex + $not_contains document filters with metadata filters and logical operators

Changes to cloud/quotas-limits.mdx:

• Clarified that the 256-byte regex/full-text search limit is Cloud-only
• Added note about the 3-character minimum applying to all deployments

Closes #5118

[github-actions]

Reviewer Checklist

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Testing, Bugs, Errors, Logs, Documentation

• Can you think of any use case in which the code does not behave as intended? Have they been tested?
• Can you think of any inputs or external events that could break the code? Is user input validated and safe? Have they been tested?
• If appropriate, are there adequate property based tests?
• If appropriate, are there adequate unit tests?
• Should any logging, debugging, tracing information be added or removed?
• Are error messages user-friendly?
• Have all documentation changes needed been made?
• Have all non-obvious changes been commented?

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• Are there any potential impacts on other parts of the system or backward compatibility?
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Quality

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[propel-code-bot]

Review found no issues; documentation updates are clear, scoped, and aligned with the stated PR goals.

Status: No Issues Found | Risk: Low

Review Details

📁 2 files reviewed | 💬 0 comments

Instruction Files

└── docs/
    └── mintlify/
        ├── AGENTS.md
        └── CLAUDE.md

[propel-code-bot]

Document regex syntax limits and advanced filtering examples for full-text search

This PR is a documentation-only update that expands guidance for full-text search and regex usage. It adds a new Regex Syntax section to docs/mintlify/docs/querying-collections/full-text-search.mdx, clarifying engine behavior (Rust regex), minimum/maximum pattern constraints, unsupported constructs, and a performance recommendation for literal substrings.

It also adds new advanced examples in Python, TypeScript, and Rust showing combined use of document filters (including $regex and $not_contains) with metadata filters and logical operators. In docs/mintlify/cloud/quotas-limits.mdx, quota wording is updated to explicitly state the 256-byte regex/full-text limit is Cloud-only while the 3-character minimum applies to all deployments.

This summary was automatically generated by @propel-code-bot