Draw quest objective areas on the world map instead of pins

[snerror]

What & why

CodexLite marks every objective spawn on the world map with a dot, which for a quest with dozens of spawns turns into a cloud of dots that says little about where to go. This PR draws each quest's objectives as translucent areas with a numbered badge, the way the retail quest map does: hovering shows the quest and its objective progress, clicking the badge opens the quest in the log. A quest whose targets sit in two separate places (the Duskwood example) gets two areas.

Main changes

• map-area-geometry.lua (new, pure Lua): single-linkage clustering of objective coordinates, padded convex hull (monotone chain over octagons around the hull vertices, so even a single spawn yields a proper blob), centroid. Covered by tests/geometry_test.lua.
• map-area.lua (new): pooled area frames as children of the map canvas so they zoom with it. Each hull is filled as a triangle fan of 1×1 textures deformed with Texture:SetVertexOffset — one uniform fill, no darker overlaps inside an area. Badge = ala's Circle texture + quest-log position. Rebuilds are debounced through the existing MT._TimerStart, and a rebuild while the map is closed is deferred to the next OnShow.
• map.lua: skips the common/large pins on the world map while area mode is on, marks the area layer dirty wherever node tables or the map change, exports wm_wrap, forwards canvas scale changes so badges keep a readable size.
• main.lua: records meta.ordinal (position among quests in the log) and redraws when it changes.
• setting.lua + locales: worldmap_quest_area toggle (default on) under WorldMap; off restores the previous dots.

Trade-offs: the hover hit-area is the polygon's bounding box, not the polygon (simpler, and it never mattered for the retail blobs either). All quests share one fill colour, as requested; overlapping areas of different quests simply stack. The minimap is untouched. Cluster distance (8 map-%) and padding (1.5 map-%) are constants at the top of map-area.lua, tuned by eye and worth revisiting in-game.

What deserves attention

• I could not run the game from the dev box, so the rendering layer has only been parse-checked; the geometry has unit tests. Three client APIs are used on the strength of the 1.15 client being the modern engine: Texture:SetVertexOffset, Frame:SetPropagateMouseClicks (guarded, so the map still drags through an area), and WorldMapFrame.ScrollContainer:OnMouseWheel (so zooming over an area keeps working).
• Frame levels: fills are pinned one level below CodexLite's pin wrap so !/? icons stay above them; badges sit 12 above. If an icon ever renders under a fill, that offset is the knob.
• QuestLog_SetSelection(index) is what Classic Era's own quest log uses; it expands a collapsed header itself.

How to test manually

1. /console scriptErrors 1, /reload, open the map in a zone with active quests: objective dots are gone, each quest shows one or more areas with a numbered badge; the number matches the quest's position in the quest log.
2. Hover an area and the badge: tooltip with title + - objective: n/m lines, finished ones green; the area brightens.
3. Click the badge: the quest log opens on that quest (also with its header collapsed).
4. Zoom and drag the map with the cursor over an area — both must keep working; areas stay aligned with the terrain.
5. Kill/collect an objective to completion: its area disappears on the next update; abandon a quest: its areas vanish.
6. Settings → WorldMap → untick Show quest areas instead of objective pins: the dots come back; tick again: areas return.
7. Tests: PYTHONPATH=<dir with lupa> python3 tests/run_lupa.py (or lua5.1 tests/geometry_test.lua) → 18 passed, 0 failed.

🤖 Generated with Claude Code

[snerror]

Two follow-ups after the first in-game look, both on map-area.lua:

• ba81c87 — per-quest colours (8-entry palette keyed by quest-log position), a thin outline along each hull, and hover feedback: hovering an area or its badge turns the badge gold with a glow and brightens every area of that quest.
• a52e896 — areas whose hulls overlap are now merged into a single area carrying one badge per quest (separating-axis overlap test in map-area-geometry.lua, covered by 6 new tests), so areas never overlap on the map. The tooltip is anchored next to the cursor for badges as well and follows the cursor while hovering, matching the retail blobs.

The "overlapping areas simply stack" line in the description is therefore superseded: they merge instead.

[snerror]

Third pivot, after another in-game round: the merged areas hid where each quest's targets actually are, so 714dfa9 switches to the retail model — badges always visible (spread apart when they'd stack), a quest's shapes only while its badge is hovered, tooltip beside the cursor. Shapes are now one per mob/object type inside a cluster, so a quest shows its specific spots rather than one hull across all of them. The shapes take no mouse input, so the map drags/zooms/clicks exactly as before; the overlap/merge code from the previous commit is gone again.

[snerror]

Minimap now gets the areas too (minimap-area.lua, new minimap_quest_area setting under MiniMap): same clusters as the world map converted to world yards, clipped to the round minimap with a mask texture, laid out once per zoom level and shifted while walking, hover = focus + tooltip, no badges. Clicks/wheel pass through to the minimap. Shared drawing/tooltip/colour code now lives behind MT.MapArea* in map-area.lua.

Things to watch in-game: CreateMaskTexture/AddMaskTexture clipping at the minimap edge, hover over a shape not stealing minimap pings, and behaviour with rotateMinimap on.