feat: add wooden-bucket and wall-torch showcase pieces

[TMHSDigital]

Summary

Prompt list was already shipped. Next two ROADMAP props:

• wooden-bucket — overlapping staves, sealed bottom, iron hoops, ears, rope bail. Open basin so it reads as a vessel.
• wall-torch — coursed stone plaque, iron bracket and cup, wooden haft, emissive flame. Shot from the sconce side.

Showcase count 20 → 22. Did not touch examples, skills, snippets, rules, templates, gallery_framing.py, LICENSE, VERSION, CHANGELOG, or smoke/pages/release workflows.

Next backlog (restocked): tavern stool, iron cauldron.

wooden-bucket — live run (.scratch binaries)

Axis	Declared	4.5.11 / 5.1.2 / 5.2.1
Base tris	4150–4400	4272 / 4272 / 4272
LOD1 / LOD2	0.32–0.62 / 0.10–0.35	0.5000 / 0.2196 all three
Materials	3, ≥24 metal, ≥12 rope	222 metal, 72 rope
AABB	(0.402, 0.345, 0.544) ± 0.01	(0.4020, 0.3449, 0.5439), zmin 0
Collider	≤ 420	390
Export	size > 0	330476 / 330476 / 330464 B

Exits: default 0 / --skip-decimate 9 (LOD1 ratio) / --nope 2 on all three. Dual 5.2.1 defaults matched. Smoke wall-clock ~2.4s / 1.6s / 1.8s (4.5 / 5.1 / 5.2).

Composes mesh-editing-and-bmesh, bake-high-to-low, depsgraph-and-evaluated-data, engine-export-presets + copied snippets bake_normal_high_to_low, setup_bake_target_image, lod_chain / decimate_to_budget, convex_hull_collider, export_preset_unity.

wall-torch — live run (.scratch binaries)

Axis	Declared	4.5.11 / 5.1.2 / 5.2.1
Base tris	1400–1650	1520 / 1520 / 1520
LOD1 / LOD2	0.32–0.62 / 0.10–0.35	0.5000; 0.2197 / 0.2197 / 0.2171
Materials	4, ≥24 stone/metal, ≥8 flame	540 stone, 130 metal, 28 flame
AABB	(0.440, 0.343, 0.740) ± 0.01	(0.4400, 0.3430, 0.7400), zmin 0
Collider	≤ 120	94
Export	size > 0	117260 / 117260 / 117244 B

Exits: default 0 / --skip-decimate 9 (LOD1 ratio) / --nope 2 on all three. Dual 5.2.1 defaults matched. Smoke wall-clock ~1.0s / 0.9s / 1.1s.

Composes the same pipeline plus procedural-materials-and-shaders (emissive flame).

Test plan

• Local 4.5.11 / 5.1.2 / 5.2.1 matrix for both pieces
• Gallery regen; alts are full sentences
• CI Validate + blender-smoke 4.5 / 5.2 / labeled 5.1 + Socket

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