M1c: weather, snap building, shelter, beds and regrowth

- Seeded weather (clear/cloudy/rain/storm, snow and blizzards on cold days
  and above the snowline), lightning, synthesised rain/wind/thunder sound
- Rain/snow particles stopped by roofs; wet ground, settled snow and wind
  via global shader uniforms
- Snap-together wood floor, wall, door, roof and gable with structural
  support, collapse and X to dismantle
- Shelter detection: dry under a roof, warmer and Rested inside with a fire;
  rain burns an uncovered campfire faster
- Bed sets the spawn point and lets you sleep through the night
- Trees, boulders and ground pickups regrow; timers saved
- Grass cleared under floors; shorter HUD hint
- New test_weather_building suite (62 checks) and tests/run_all.sh, which
  also fails on script errors

data/recipes.json

@@ -78,6 +78,62 @@
       "inputs": {
         "mushroom": 1
       }
+    },
+    {
+      "id": "wood_floor",
+      "output": "wood_floor",
+      "count": 1,
+      "station": "workbench",
+      "inputs": {
+        "wood": 2
+      }
+    },
+    {
+      "id": "wood_wall",
+      "output": "wood_wall",
+      "count": 1,
+      "station": "workbench",
+      "inputs": {
+        "wood": 2
+      }
+    },
+    {
+      "id": "wood_door",
+      "output": "wood_door",
+      "count": 1,
+      "station": "workbench",
+      "inputs": {
+        "wood": 4
+      }
+    },
+    {
+      "id": "wood_roof",
+      "output": "wood_roof",
+      "count": 1,
+      "station": "workbench",
+      "inputs": {
+        "wood": 2,
+        "fiber": 1
+      }
+    },
+    {
+      "id": "wood_gable",
+      "output": "wood_gable",
+      "count": 1,
+      "station": "workbench",
+      "inputs": {
+        "wood": 1
+      }
+    },
+    {
+      "id": "bed",
+      "output": "bed",
+      "count": 1,
+      "station": "workbench",
+      "inputs": {
+        "wood": 8,
+        "fiber": 6
+      }
     }
   ]
 }