The terminal's Vision screen shows the repository's direction under its order of work, as MCP `vision` answers it, and Enter opens the direction issue #7476

Intent: the owner reads what the crew is steering by (the direction issue, in its parts) beside the vision, without a browser.

Today src/tui/screens/vision.ts draws the purpose, the order and the rules from docs/VISION.md. MCP vision also answers direction and directionParts, the open direction issue cut into its numbered parts, and the screen shows neither.

Done:

• [ ] Under the rules, a "Direction" section draws #N title, then each part from the same read MCP vision uses, wrapped to the width as the rest of the screen is.
• [ ] Enter on the direction line opens that issue's screen. A repository with no open direction issue draws nothing extra.
• [ ] The screen's gate is unchanged.
• [ ] A test (e.g. test/tui-vision-direction.test.ts) opens a direction issue with three parts, checks they are drawn in order and that Enter opens the issue, and checks a repository without one draws no section.

Files: src/tui/screens/vision.ts, a new test.