[valzargaming]

Adds a paid 3.6 m³ chamber between finite habitat and exterior reservoirs. Each door or bypass can open only while the opposite boundary is closed, intact and isolated; safe closing retains its own force and occupancy checks. Gas transfers inner then outer through one conductance per boundary, with finite depletion and no refill.

The default catalog adds a distinct 15 kg ore seam. The unseeded route uses 39 kg ore, installs 20.4 kg plate plus a 2 kg iron crowbar, spends 71,750 J and leaves 28,250 J. Legacy catalogs receive no new resources. Production15, observation17, paid-door6 and Pressure5 persist strict paired links and reject incomplete cross-owner restores atomically.

Includes paid kit recovery, controls showing three pressures/opposite state/valves/load, a server-owned handle at 900 mm under the existing 1.5 m reach bound, and narrow production-view legacy wall cleanup. The floor extends to x7900 for full capsule support beyond the outer aperture. Both seals precede either bypass.

Validation at head7f0aaa2590ecdc2180133a07629db1f7de17387f: all19PRchecks pass. CI run40030832751 and production run40030833004 checked out merge ba60f89 (parents5cc1be1192492c95ce61cf31f4eebdab94d4d344 +7f0aaa2590ecdc2180133a07629db1f7de17387f). Each OS reports full Godot172/0 and production21/0 JUnit results; stability logs are clean. Actual LocalHabitatCharacter transit from observed spawn through both doors and back, finite cycles/conservation/depletion/reload/recovery, paired CAS and malformed restores pass. Genuine emitted versioned schemas and exact resource budgets pass on both OSes.

Windows/Linux development export jobs passed cooperative host startup smoke tests. Downloaded artifact ZIP digests, inner archive checksums, manifest platform/revision/Godot4.7.2 and all8listed payload hashes per platform were independently verified. Export startup is distinct from full chamber gameplay execution in an exported binary. Local bounded Windows checks pass; git diff --check and clean-tree closeout pass. No environment/configuration changes or deployment. Draft pending Coordinator acceptance.