Renewable resources: tree growth + WildGrowth + Quarry on BigRockNode

Trees: 4 growth stages (Sapling→Young→Growing→Mature), only Mature
yields wood. WildGrowth ticker fires every in-game hour; rejection-
samples grass tiles and plants a sapling with ~30% probability (capped
at MAP_TREE_LIMIT=60). New `paint_plant_tree` designation lets the
player manually plant — ghost sapling registered as a build_site that
ConstructionProvider fulfils. Stage round-trips through save/load.
Initial seed mixes 4 saplings + 6 mature so growth is visible day 1.

Quarry: new BigRockNode entity (2×2 permanent stone outcrop, never
depletes). 3 nodes seeded far from cabin. New QuarryWorkbench
(extends Workbench, auto-FOREVER `quarry_stone` bill, recipe drops
1 stone per 300 work-ticks). New `paint_quarry` designation only
accepts BigRockNode tiles. CraftingProvider now supports recipes
with `ingredient_count == 0` — skips ingredient-fetch and goes
straight to walk+craft toils. Recipe gains `ingredient_count` field
(defaults 0). Save/load layering: big_rock_node spawns at priority 0
(same as rock/tree), quarry_workbench at priority 2 (after the node).

UI: Plant tree + Build quarry buttons added to Build drawer.
build_drawer_thumb gains `plant_tree` (sapling sprout in dirt) and
`paint_quarry` (stone block + chisel + cut-stone pile) shapes.
inspect_tooltip recognises BigRockNode + shows tree growth stage on
hover.

Delegation: gdscript-refactor (Sonnet ×2) for trees full impl +
quarry skeleton; quick-edit (Haiku) for CraftingProvider no-ingredient
plumbing + TopBar polish; integration handled on Opus.

scenes/ui/build_drawer_thumb.gd

@@ -332,6 +332,46 @@ func _draw() -> void:
 			draw_line(Vector2(c.x, c.y + 6), Vector2(c.x, c.y - 6), arrow, 2.0)
 			draw_line(Vector2(c.x, c.y - 6), Vector2(c.x - 4, c.y - 2), arrow, 2.0)
 			draw_line(Vector2(c.x, c.y - 6), Vector2(c.x + 4, c.y - 2), arrow, 2.0)
+		&"paint_quarry":
+			# Stone block on wood frame + small pile of cut stones beside.
+			var frame := Color(0.42, 0.26, 0.12)
+			var frame_top := Color(0.55, 0.36, 0.18)
+			var stone := Color(0.65, 0.63, 0.60)
+			var stone_hi := Color(0.82, 0.80, 0.76)
+			var stone_dark := Color(0.32, 0.30, 0.28)
+			var chisel_steel := Color(0.78, 0.80, 0.85)
+			# Wood frame base.
+			draw_rect(Rect2(c.x - 14, c.y + 6, 28, 8), frame)
+			draw_rect(Rect2(c.x - 14, c.y + 3, 28, 3), frame_top)
+			# Large stone block on top.
+			draw_rect(Rect2(c.x - 10, c.y - 8, 14, 11), stone)
+			draw_rect(Rect2(c.x - 10, c.y - 8, 14, 3), stone_hi)
+			# Chisel marks (3 short dark lines on the stone face).
+			draw_line(Vector2(c.x - 6, c.y - 3), Vector2(c.x - 4, c.y - 3), stone_dark, 1.0)
+			draw_line(Vector2(c.x - 2, c.y - 3), Vector2(c.x, c.y - 3), stone_dark, 1.0)
+			draw_line(Vector2(c.x + 2, c.y - 3), Vector2(c.x - 0, c.y - 3), stone_dark, 1.0)
+			# Pile of cut stones beside the block.
+			draw_rect(Rect2(c.x + 6, c.y, 4, 3), stone)
+			draw_rect(Rect2(c.x + 8, c.y - 3, 3, 3), stone_hi)
+			# Chisel tool on top of block.
+			draw_rect(Rect2(c.x - 4, c.y - 12, 2, 4), chisel_steel)
+			draw_rect(Rect2(c.x - 5, c.y - 13, 4, 2), frame_top)
+		&"plant_tree":
+			# Green sapling sprout rising from dirt — signals manual tree planting.
+			var dirt := Color(0.45, 0.32, 0.18)
+			var dirt_hi := Color(0.62, 0.46, 0.28)
+			var stem := Color(0.35, 0.22, 0.10)
+			var leaf_a := Color(0.30, 0.65, 0.20)
+			var leaf_b := Color(0.25, 0.55, 0.18)
+			# Dirt base rectangle.
+			draw_rect(Rect2(c.x - 14, c.y + 2, 28, 14), dirt)
+			draw_line(Vector2(c.x - 14, c.y + 5), Vector2(c.x + 14, c.y + 5), dirt_hi, 1.0)
+			# Stem.
+			draw_line(Vector2(c.x, c.y + 2), Vector2(c.x, c.y - 8), stem, 2.0)
+			# Three leaf dots at top of stem.
+			draw_circle(Vector2(c.x, c.y - 10), 4.0, leaf_a)
+			draw_circle(Vector2(c.x - 5, c.y - 6), 3.0, leaf_b)
+			draw_circle(Vector2(c.x + 5, c.y - 5), 3.0, leaf_b)
 		_:
 			# Unknown tool — small grey placeholder.
 			draw_rect(Rect2(c.x - 12, c.y - 12, 24, 24), Color(0.50, 0.50, 0.50))