view modes for deepseek harness

Key features

• Use the session-header control to select Verbose, Normal, or Summary.
• Technical notes (Chinese)architecture, grouping rules, data attributes, performance constraints, and maintenance notes
• Use Alt+1, Alt+2, or Alt+3 to switch modes from the keyboard.
• In Normal mode, click a process title such as "Ran 2 commands, thought 3 times" to expand the original steps.
• Individual command details remain expandable inside an open process group.