Registry filter

[dmartinol]

Fixes #1824

• Filter by name with regexp
• Filter by tags
• Matching rules are explained in the doc.go file:

//  1. If exclude patterns/tags are specified and match -> exclude (precedence)
//  2. If include patterns/tags are specified and match -> include
//  3. If include patterns/tags are specified but no match -> exclude
//  4. If only exclude patterns/tags specified and no match -> include
//  5. If no filters specified -> include (default behavior)
//
// For a server to be included in the final registry, it must pass BOTH
// name and tag filtering (logical AND).

• Refactored the sync.manager package to break down the individual steps and avoid the cyclomatic complexity linting issue
• Updated examples with more relevant filters

[codecov]

Codecov Report

❌ Patch coverage is 87.13235% with 35 lines in your changes missing coverage. Please review.
✅ Project coverage is 46.55%. Comparing base (bd3474a) to head (c31607b).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
cmd/thv-operator/pkg/sync/manager.go	69.52%	25 Missing and 7 partials ⚠️
cmd/thv-operator/pkg/filtering/filter_service.go	97.47%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1905      +/-   ##
==========================================
+ Coverage   46.22%   46.55%   +0.33%     
==========================================
  Files         217      220       +3     
  Lines       26980    27201     +221     
==========================================
+ Hits        12472    12664     +192     
- Misses      13553    13583      +30     
+ Partials      955      954       -1     

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[Copilot]

Pull Request Overview

This PR implements a comprehensive registry filtering system for MCPRegistry resources that allows filtering MCP servers by name patterns (using glob matching) and tags (using exact string matching). The system enables precise control over which servers are included in specific registries.

Key changes:

• Added a complete filtering system with name and tag filtering capabilities
• Refactored the sync manager to incorporate filtering into the registry synchronization process
• Enhanced example configurations to demonstrate various filtering scenarios

Reviewed Changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 1 comment.

File	Description
examples/operator/mcp-registries/*.yaml	Updated example configurations to showcase different filtering scenarios including tag-based, name pattern, and combined filtering
cmd/thv-operator/pkg/sync/manager.go	Refactored sync manager to integrate filtering service and broke down sync process into smaller functions
cmd/thv-operator/pkg/sync/manager_test.go	Added comprehensive tests for filtering functionality and improved test coverage
cmd/thv-operator/pkg/filtering/*.go	New filtering package with name filter, tag filter, and filter service implementations

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[coveralls]

coverage: 43.883% (+0.3%) from 43.591%
when pulling c31607b on dmartinol:registry_filter
into bd3474a on stacklok:main.

[jhrozek]

just a single question but ready to be merged.