feat(ui): render the Recent imagery readout as components

createRecentImageryPanel() computes the readout from the layer snapshot
and renders RecentImageryReadout and its day cards synchronously; its
delegated listeners stay on the stable root and the mode buttons keep their
segmented control. Rail card actions take optional pressed and reserved
states, replacing the owner's patches after render. Thumbnails, focus,
scroll preservation, the DETAILS reveal and export behave as before, and
nothing paints after teardown.

docs/VUE-MIGRATION.md

@@ -82,7 +82,8 @@ They contain no application state.
    Vue's synchronous `render()` behind `createRailCards()`,
    `createRailCardBlocks()` and `createRailTimeline()`. Order: Scenes (done: `SceneOptions` and
    `SceneShotList` over the `gev-scenes` store), Weather (done: the owner
-   renders `WeatherReadout` from the view it computes), Recent imagery,
+   renders `WeatherReadout` from the view it computes), Recent imagery
+   (done: `RecentImageryReadout` and its day cards, the same way),
    Street level, CCTV, Layers, Display, Context and Radio, the command dock,
    the phone shell, then Cockpit. Layers that write into the right rail
    directly gain a slot instead.