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feat: improve command palette accessibility and database security resilience - #1606
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…attributes in Command Palette - Added proper focus trap to prevent focus from leaving the dialog - Implemented focus restoration on dialog close (stores previous focus) - Enhanced ARIA attributes for screen readers (aria-describedby, aria-modal) - Added screen reader-only description with keyboard shortcuts - Added comprehensive accessibility tests for WCAG 2.1 AA compliance - Added sr-only CSS utility for screen reader content - Ensures focus is properly managed when dialog opens/closes Closes emdevelopa#1507
…r Database Row-Level Security Service - Added transaction isolation tests for concurrent access scenarios - Added concurrent read/write tests to validate RLS under load - Added performance stress tests for bulk operations - Added sequential context switch tests to measure degradation - Added complex query tests with joins under RLS - Added edge case tests (NULL context, SQL injection, large result sets) - Added aggregate query validation tests - Added error handling and recovery tests - Added query time measurement utilities for performance tracking - Validates RLS maintains security under concurrent and stress conditions Closes emdevelopa#1471
…r Database Row-Level Security Service - Added PostgreSQL advisory lock management for distributed concurrency control - Implemented acquireAdvisoryLock with timeout and exponential backoff - Implemented releaseAdvisoryLock for safe lock cleanup - Added withAdvisoryLock pattern for automatic lock management - Added withMerchantContextAndLock combining RLS context with distributed locking - Added isAdvisoryLockHeld for lock status checking - Added getLockStats for monitoring and observability - Added comprehensive integration tests for lock operations - Added concurrent access serialization tests - Added edge case and error handling tests - Ensures locks are released even on errors or exceptions - Provides distributed safety across multiple application instances Closes emdevelopa#1470
…ve-integration-and-stress-test-suite-for-database-row-level-security-service Feature/be add comprehensive integration and stress test suite for database row level security service
…uted-concurrency-control-and-locking-for-database-row-level-security-service feat(backend): enhance distributed concurrency control and locking fo…
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Summary
This PR improves Command Palette accessibility and strengthens the Database Row-Level Security Service through integration testing, distributed locking, and resilient retry handling.
Changes
[Frontend] Implement WCAG 2.1 AA accessible focus trap and ARIA attributes in Command Palette #1507 — Command Palette Accessibility
[Backend] Add comprehensive integration and stress test suite for Database Row-Level Security Service #1471 — Row-Level Security Integration and Stress Tests
[Backend] Enhance distributed concurrency control and locking for Database Row-Level Security Service #1470 — Distributed Concurrency Control and Locking
[Backend] Implement automated retry with exponential backoff in Database Row-Level Security Service #1469 — Exponential Backoff Retry
Testing
Issues Closed
Closes #1507
Closes #1471
Closes #1470
Closes #1469