fix(rendering): bound portal resource lifetime

Separate logical ownership, render publication, and GPU retirement across live entities, landblocks, particles, textures, mesh arenas, portal/UI teardown, and per-frame scratch storage. Add bounded DAT/texture caches, upload budgets, three-frame fence retirement, exact-incarnation appearance reconciliation, frame pacing, and extensive lifetime conformance coverage.\n\nThe seven-destination connected route now cuts peak working/private memory roughly in half, returns Caul to 125-153 FPS locally, and produces no WER or AMD reset.\n\nCo-authored-by: OpenAI Codex <codex@openai.com>

docs/architecture/worldbuilder-inventory.md

@@ -186,6 +186,20 @@ rendering and landblock mesh pins while retaining the terrain slot. Core's
 matching physics demotion preserves the terrain surface but removes indoor
 cells, portals, buildings, and static shadow registrations.
 
+**Bounded residency and GPU retirement seam (2026-07-18).** Runtime DAT access
+keeps raw file payload caching disabled and layers bounded typed-object and
+decoded-pixel LRUs above the single `DatCollection`. `ObjectMeshManager`, the
+standalone bindless texture cache, and the owner-scoped composite texture-array
+cache all distinguish an active owner from an evictable unowned entry. Appearance
+changes and landblock demotion acquire-before-publish and withdraw-before-release;
+rebucketing never creates a second owner. `GlobalMeshBuffer` uses reclaimable,
+coalescing vertex/index ranges and migrates incrementally within explicit physical
+ceilings. Texture layers, terrain slots, mesh ranges, and old backing stores are
+returned only after `GpuFrameFlightController` observes the frame fence that can
+no longer reference them. This lifetime machinery is acdream-owned integration
+around the extracted WB mesh pipeline; it does not add a second DAT decoder or a
+reduced-distance rendering path.
+
 **Workflow:** Before re-implementing any AC-specific rendering or dat-handling
 algorithm, **check this inventory first**. If we already extracted it (🟢
 sections), it's in `src/AcDream.App/Rendering/Wb/` — use our copy. If WB has