- Remove type filter from cycle detection to check ALL dependency types
- Extract maxDependencyDepth=100 constant shared across AddDependency and DetectCycles
- Move cycle check before INSERT to avoid unnecessary write on failure
- Add comprehensive tests: self-dependency, related cycles, cross-type cycles
- Verify idx_dependencies_issue index exists for performance
Fixes bd-312. Prevents cross-type cycles (e.g., A blocks B, B parent-child A)
that previously hid work from ready list. Addresses oracle feedback for
proper implementation.
b7f9e74574