fix(service-map): tiles stay put while you place them - #2545

🟡 Confidence 6/10 · needs attention. Held at 6 because a correctness warning is open.
_{1 warning −1 · tests partial −1 · risk medium}

Holds the service-map tiles camera, lakes and country still while a tile is lifted, glides the framing when the board grows, and aims at the tile, plate, lake or country drawn under the pointer. Sound apart from a stale ring in the country cache.

• framing/fit glide the camera (FIT_GLIDE_MS) instead of jumping, cancelled by a grab or a zoom command
• extentOf frames the tiles only, so lifting a tile no longer refits
• derive computes lakes and wilds without the held id, so the country stays put on pickup
• cellUnder raycasts tiles, plates, lakes and wilds; ring-2 country hides while a tile is held

Findings

				key: `${cellKey(cell)}:${ring}:${biome.id}:${feature}:${palette.night}`,

_{f5b378a · Reply "won't fix" to dismiss a finding, or mention @maple-review-bot to ask about one.}