mine of tanks

Audited all 84 catalog cannon parts, including upgrades, in both native and adapted meshes. Checked forward direction relative to the breech with cube and parent rotations included. Medium I and its upgrades passed this check; no additional global rotation was applied.
Restored omitted adapted barrels for A7V, Panzer II D and Pz.35(t) (stock and both upgrades). Adapted stock Torosso now includes the barrel selected by its native controller. Corrected the Vickers Mk E upgrade mesh and pivot to match the module's turret. Seven adapted resources repaired with their matching original textures; native models were not replaced.
Validation: 84 native and 84 adapted meshes passed geometric direction audit; 3,864 weapon/host combinations checked on the test server; all 41 required tests passed; offline build passed. Geometry and attachment were checked programmatically, without live visual inspection of every combination.
Preview.20 and earlier fixes are preserved, including aiming marker, weights and mobility. General visual machine-gun traversal review remains pending; this package addresses cannons.
Validation: 41 required tests and 3864 weapon/host combinations passed; offline assemble successful. Live visual verification pending.