feat: in-map popover editor for sites and links

[wilhel1812]

Replace the current split-panel editor (which includes a separate embedded map) with a popover-style editor that lives on the main map. The editor is opened via the pencil icon in the sidebar list (see companion issue) or via the "New" button for sites.

The editor edits the library entry, same as the current editor.

Editor behavior:

• Appears as a floating Surface card on the main map, anchored to or near the selected site or link marker
• Contains all the same fields as the current editor
• Cannot be dismissed by clicking outside — only via dedicated buttons (Save, Cancel, or Close)

Creating a new site:

• A pin is placed at the current map center
• The pin can be dragged to position it
• The popover editor opens immediately

Mobile:

• On mobile the editor adopts a bottom panel style (similar to the existing mobile bottom panels), so both the map and the editor are visible at the same time

Long-term:

• The current editors are to be removed once this is in place

[wilhel1812]

Starting implementation pass for the #804 iteration scope agreed in-thread. Scope: keep one shared editor per resource kind for new/edit, remove MapEditorPanel outside-click dismissal while keeping ESC/buttons, reclamp floating editor on content resize, restore beam preview and map search in the new site editor, route stale site/simulation/MQTT/details entrypoints to openMapEditor, and remove old editor UI/state that conflicts with the new Site Library / Site Editor separation. Verification target: npm test + npm run build, no local deploy scripts.

[wilhel1812]

Implementation pass completed locally on branch issue/804-map-popover-editor-iteration. Covered scope: shared new/edit map editor paths for site/link/simulation, no parent outside-click dismissal, ResizeObserver reclamping, restored site beam preview and map search, rerouted map/MQTT/sidebar/library entrypoints to openMapEditor, removed the unused old link-modal inspector hook, and removed the Simulation Library embedded new-simulation modal fallback. Verification: npm test passed (95 files, 463 tests); npm run build passed. No local deploy scripts were run.

[wilhel1812]

Starting follow-up implementation pass for the latest #804 feedback. Scope: keep map search visible, use the main map as the site editor map (map click selects new-site coordinates, marker drag updates editor coordinates/elevation, coordinate edits move the marker, search result updates map), restore Site Library New button using the shared editor, improve link default naming and override toggle wording, unhide Simulation Defaults and Link Overrides, and cap mobile editor height at 50vh. Verification target remains npm test + npm run build; no local deploy scripts.

[wilhel1812]

Follow-up implementation for the latest map editor feedback is complete locally on issue/804-map-editor-map-interactions.

Implemented:

• Site editor now shares an active map draft with the main map: map click seeds new sites, marker drag updates coordinates/elevation, coordinate edits move the marker, and map search drops/moves the marker.
• Map search, simulation defaults, and link radio overrides are no longer hidden behind expandables.
• Site Library has a New action that opens the shared site editor and leaves the map visible for coordinate picking.
• Link names now default dynamically from selected endpoints (site A -> site B) instead of the old placeholder.
• Link radio override toggle is now positive: Override site radio settings.
• Mobile editor sheet max height is limited to 50vh.

Local verification:

• npm run build passed.
• npm test passed: 95 files, 464 tests.

Next: commit, push, open PR to staging, then monitor CI after merge.