fix(camping): half-slab hammock geometry + smarter tent grounding

- Hammock now uses a custom geometry.silverlabs.hammock_slab (8-voxel
  tall half-slab instead of a full cube), matching its thin collision
  box so the block reads visually as a hammock cradle, not a brick.

- Tent placement now projects the player's feet down to the nearest
  solid block (up to 3 blocks) before picking the base Y, so mid-jump
  fractional positions or standing-on-slab cases don't mis-place the
  footprint one block too high.

- Failure messages now include the exact failing cell coordinates and
  the block type that's in the way, so we can diagnose live pitch
  attempts without guesswork.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

camping-supplies-addon/camping_supplies_BP/scripts/main.js

@@ -96,14 +96,26 @@ function tryPlaceTent(player) {
   const dim = player.dimension;
   const facing = cardinalFacing(player.getRotation().y);
   const { fx, fz, rx, rz } = vecsForFacing(facing);
-  const feet = {
-    x: Math.floor(player.location.x),
-    y: Math.floor(player.location.y),
-    z: Math.floor(player.location.z),
-  };
-  const ox = feet.x + fx;
-  const oy = feet.y;
-  const oz = feet.z + fz;
+  // Use precise player position; floor X/Z but scan Y downward to find the actual
+  // standing surface. player.location.y may be fractionally above the block you're
+  // on (e.g. 87.01), so floor() alone is reliable, but if the player is in the
+  // air (jumping / on a slab / flying) we want to project them down to solid ground
+  // so the tent doesn't try to sit on empty space.
+  const feetX = Math.floor(player.location.x);
+  const feetZ = Math.floor(player.location.z);
+  let feetY = Math.floor(player.location.y);
+  // If the block at feet level is air (player's mid-jump or location rounded up),
+  // scan downward up to 3 blocks to find the ground.
+  for (let probe = 0; probe < 4; probe++) {
+    const here = dim.getBlock({ x: feetX, y: feetY - 1, z: feetZ });
+    if (here && here.isSolid) break;
+    const onSolid = dim.getBlock({ x: feetX, y: feetY, z: feetZ });
+    if (onSolid && onSolid.isSolid) { feetY += 1; break; }
+    feetY -= 1;
+  }
+  const ox = feetX + fx;
+  const oy = feetY;
+  const oz = feetZ + fz;
 
   const groundCells = [];
   const clearCells = [];
@@ -119,18 +131,19 @@ function tryPlaceTent(player) {
   for (const g of groundCells) {
     const b = dim.getBlock(g);
     if (!b || !b.isSolid) {
-      player.sendMessage("§c[Camping] §7Need a flat 2×3 patch of solid ground in front of you.");
+      const seen = b ? b.typeId : "unloaded";
+      player.sendMessage(`§c[Camping] §7Ground at §f${g.x},${g.y},${g.z}§7 is §f${seen}§7 — need solid ground there.`);
       return false;
     }
   }
   for (const c of clearCells) {
     const b = dim.getBlock(c);
     if (!b) {
-      player.sendMessage("§c[Camping] §7Can't reach that area (chunk unloaded).");
+      player.sendMessage(`§c[Camping] §7Can't reach §f${c.x},${c.y},${c.z}§7 (chunk unloaded).`);
       return false;
     }
     if (!b.isAir && !b.isLiquid) {
-      player.sendMessage("§c[Camping] §7The space above the tent footprint isn't clear.");
+      player.sendMessage(`§c[Camping] §7Space at §f${c.x},${c.y},${c.z}§7 is blocked by §f${b.typeId}§7.`);
       return false;
     }
   }