beads-rust tracker: dep.type should be dep.dependency_type in brTaskToTask()

[thunter009]

Bug

brTaskToTask() in the beads-rust tracker plugin checks dep.type === "blocks" but br --json outputs dependency_type, not type. This means the dependsOn and blocks arrays are always empty — ralph-tui never knows about task dependencies when using beads-rust.

Symptoms

• Blocked tasks show as actionable (wrong icon)
• Running tasks show as ⚠️ completedLocally
• Dependency-based status conversion in convertTasksWithDependencyStatus() is a no-op

Root Cause

Two locations in brTaskToTask():

// Current (broken)
if (dep.type === "blocks") { dependsOn.push(dep.id); }

// br --json actual output
{ "dependency_type": "blocks", "id": "bd-1e4.8", ... }

Fix

Change dep.type → dep.dependency_type in both the dependencies and dependents loops.

Repro

br show bd-xxx --json | jq '.dependencies[0]'
# → { "dependency_type": "blocks", ... }   (not "type")

Discovered using ralph-tui with beads-rust tracker on a 3-slice epic where V2 and V3 depend on V1.