Move AOI's analyze and cancel card onto the core popup service

[CarsonDavis]

Category	Lines added	%
Tests	653	76%
Production code	203	24%

The AOI analyze/cancel card is no longer an overlay the plugin draws itself. It is the map library's own popup, requested from the core popup service.

Closes #299

Last of three PRs: engine placement (#454) → core popup service (#455) → this AOI migration. Stacked on #455. This is the PR where the change shows on screen.

The card is the map's own popup

Before, the card was a React component the tool rendered and closed itself: it did not track the ground, had no close control, and nothing clipped it. Now it comes from the popup service, so in the Demo Dashboard it sticks to the area through pan and zoom, carries the library's ×, and clips at the edge.

When the card appears, and how it waits for the camera

A search result, an Inspect click, a finished drawing and an upload all end the same way: the area is outlined, the map frames it if needed, and the card appears once above the selection. Already in view, it opens at the centroid; if the camera moves, the card waits for it to settle — 1.5 s safety net, pre-move view if framing fails — so it never flashes at the corner.

How it closes, and what happens to the selection

Analyze area hands the feature to analysis and leaves the outline up. Cancel, the ×, and a single click on the map close the card and clear the selection and outline; a click inside the panel does nothing. Click a second state in Inspect and you get its card. The card remembers which selection it belongs to, so a late close from the old card cannot clear the new selection.

Starting a drawing puts the card away

Starting a drawing retracts the card but keeps the previous selection outlined — otherwise it would sit there all session offering to analyze an area you are replacing. Back out before the first vertex and the card comes back. The first vertex drops the old outline. EXIT takes the card with it, including one still waiting on the camera.

Closing the results panel clears the outline

After Analyze, AOI hides its own panel and the Chart plugin's Analysis results panel takes its place. Before, closing that panel with its × left the outline on the map with no panel to clear it from; only exiting AOI itself removed it. AOI now listens to the framework's plugin-state announcements and clears the selection when the results panel goes from open to unloaded, and only on that transition, since the announcement fires for every plugin change in the app. Demo mission: draw a shape, Analyze, close the results panel; the outline goes with it. AOI's own panel stays hidden afterwards, as it did before.

What the plugin lost, and the generic title

AOITooltip.tsx and the .aoi-tooltip styles are deleted; no popup component or styling remains in the plugin. A selection with a blank name gets the title "Selected area": the service refuses a card with neither title nor body, which would strand the selection with no way to analyze or cancel.

Unchanged, and not here

Switching tools still clears the selection, Cancel still fires drawingCancelled, and requests still go through the global MMGIS API. The shape-picker and line/point bounds fixes are separate PRs.

Decisions to review

• drawingCancelled fires only for the Cancel button. A dismiss (× or map click) clears the selection directly, so consumers hear only drawingCleared. The alternative is routing dismiss the same way, so abandoning an area is one event.
• "Take my card down" is an unscoped map:hidePopup, issued at four points without knowing whether the card in core's single slot is AOI's. It replaces an id-scoped overlay removal; as written, any plugin can dismiss another's popup. Ownership is planned for a later PR.
• The fallback title lives in the plugin, not the service. The realistic source is an unnamed uploaded area. The alternative is to let the request reject and treat the blank name as a data problem.