The terminal's Flow dialog lists the idle crew pulls: number, repository and hours since the last push #6479

This makes the idle-pull read reachable from the terminal.

Done:

• [ ] The Flow dialog in src/tui/screens/flow.ts gains a section after the conflicted pulls: idle: N, then one line per pull from readIdlePulls (src/flow/idle_pulls.ts), as #<n> <repo> · <h> h since a push. With none, it says no idle pulls.
• [ ] test/tui-flow-idle.test.ts seeds one idle crew pull and finds its line on the screen.

Files: src/tui/screens/flow.ts, test/tui-flow-idle.test.ts