Handle the race in config file registry entry

[sheetalkamat]

Fixes #1194

[Copilot]

Pull Request Overview

Implements finer-grained locking on ConfigFileEntry to eliminate a race and reduce lock contention when reloading configs.

• Switch from sync.Mutex to sync.RWMutex and use RLock in getConfig
• Refactor onConfigChange to clone key sets under lock and process outside the critical section
• Apply the same lock‐scope reduction in tryInvokeWildCardDirectories using maps.Clone

Comments suppressed due to low confidence (2)

internal/project/configfileregistry.go:118

• Consider adding tests to verify that concurrent calls to getConfig, onConfigChange, and tryInvokeWildCardDirectories behave correctly under the new RWMutex scheme.

		entry.mu.RLock()

internal/project/configfileregistry.go:220

• The original implementation handled and returned after the first matching project; this loop now processes all matching projects—verify that this change in behavior is intended.

	for project := range projects {