v0.8.6

Added

• add interactive flag to AppContext to fix test hangs in TTY
• prompt to use parent task's repository when retrying a child task
• prompt to retry child tasks when retrying a parent task
• proactively check Claude OAuth token expiry before scheduling tasks
• save docker build logs to task directory on failure

Fixed

• log OAuth token expiry on every check with retry countdown
• detect is_error field in Claude result messages
• capture docker build output and only display on failure
• remove misleading 'tsk run' hint from add command output