Subtasks in task list more compact #42

Nested subtasks should use less vertical space: omit descriptions and full metadata in nested rows while keeping the status indicator, project-local number, title, and full-card link to details. Remove pills/badges from nested rows, including the redundant status pill. Render subtask titles in normal body text with regular font weight, not as bold headings; reduce vertical padding and text margins accordingly. Preserve accessible status information without relying only on color. Keep top-level task descriptions and presentation unchanged.

Planning only: implement and verify through the ordered subtasks; no implementation has started.