Vim Navigation for Deep Analysis Execution

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User Story: As a keyboard-centric user, I want to be able to focus and trigger the "Run Deep Analysis" button using normal mode Vim bindings, so that I can initiate analysis seamlessly.
Acceptance Criteria:

• The "Run Deep Analysis" button is focusable via j/k navigation in normal mode.
• When the button is focused/highlighted, pressing Return (Enter) executes the analysis.