The Kanboard API returns only true/false for many operations without
explaining why they failed. Added OperationFailedError type that
includes operation details and hints about possible causes.
Updated MoveTaskPosition and MoveTaskToProject to use this new error
type, providing users with actionable debugging information instead
of generic "failed to move task" messages.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Replace the atomic counter-based request ID generation with random
int64 values using math/rand/v2. This improves unpredictability and
avoids potential ID collisions across client instances or restarts.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- GetAllCategories returns all categories for a project
- GetCategory returns a single category by ID
- Returns ErrCategoryNotFound for non-existent categories
- Added ErrCategoryNotFound to IsNotFound helper
- Comprehensive test coverage
Add core JSON-RPC 2.0 protocol implementation for Kanboard API:
- JSONRPCRequest/Response/Error structs with proper JSON tags
- Generic call() method for sending requests and parsing responses
- Thread-safe request ID generation using atomic.Int64
- Automatic /jsonrpc.php path appending to baseURL
- Support for subdirectory installations
- HTTP Basic Auth support (API token and username/password)
- Error handling for unauthorized/forbidden responses
Includes comprehensive tests with httptest mock server.
Closes: kanboard-api-2g1
