Wire the detail drawer, compare sheet, share card, Street View preview and category icon into the map - #338

What this changes

Part of #313. Wires five more of the standalone components that no page imported yet. Each is its own checkbox in that issue.

• PlaceDetailDrawer: every row in the results list gets an info button ("Details for ") that opens the drawer; PlacesMap holds the open place. The drawer is now scrollable.
• SharePlaceCard and PlacePhotoGallery: shown inside that drawer, under the directions button (copy a link to the focused pin, copy name and address as text, and a Street View preview with the component's own "not every location has coverage" note).
• ComparePlacesSheet: each row gets a "Compare " checkbox (a native input, labelled); ticking 2 or 3 enables a "Compare (n)" button above the list, and the sheet shows the places side by side with pairwise distances. A fourth tick is disabled, and "Clear selection" resets. Selection lives in PlacesMap, so it survives filtering as long as the places exist.
• CategoryIcon: replaces the plain colour dot in the results rows, the pin popup's type chip, the drawer and the compare sheet, which is the duplication the issue pointed at. The icon is tinted with the same PLACE_TYPE_COLORS, so the colour still matches the pin. The category chips keep their dots on purpose: they are the map legend for the clustered pie pins.

Not touched: PlaceReviewBadge and RecentAdditionsFeed need data the schema does not have (ratings, added-on dates); HeatmapToggle needs heatmap rendering first. #313 stays open for those three.

This branch is stacked on #337 (country filter), because both change places-map.tsx and map-panel.tsx; that commit drops out of this diff when #337 merges.

Proof

• New tests: results-list.test.tsx (+3: details button, nothing extra by default, compare needs two picks and caps at three) and places-map.test.tsx (+2: the drawer opens with the Street View card and copy button, two picked places open the compare sheet).
• npm run typecheck, npm run lint, npm run format:check, npm run build clean; unit tests: 72 files, 685 pass.

Not verified

I did not open /map in a browser. Not checked by eye: how the drawer and the compare sheet sit next to the map on a phone, whether the Street View iframe renders for a given place (Google serves it, and it can be blank where there is no coverage, as the component itself says), or the extra checkbox and info button making rows tight in the narrow sidebar.

Type of change

• Code or fix
• New public place(s)
• New or updated benefit guide
• New or updated resource link
• Docs