docs(render): close unified residency slice

docs/architecture/acdream-architecture.md

@@ -512,6 +512,19 @@ the waiting attachment graph transitively, so A→B→C recovers B before C in t
 same parent-first pass. Recovery is edge-triggered by object/appearance/pose
 publication; permanent missing DAT or holding parts are never polled per frame.
 
+Runtime content residence has one typed policy and diagnostic ledger without
+centralizing physical storage. `ResidencyManager` owns generation-safe logical
+asset identity, owner tokens, leases, immutable budgets, and aggregate
+accounting. Specialized render/content owners continue to own their mesh
+ranges, texture arrays, staging payloads, decoded animations/audio, and
+retained shared-alpha scratch. The manager never sees a GL name: policy runs as
+a single writer during update/resource maintenance, while logical eviction and
+fence-delayed physical release remain render-thread owner operations. Prepared
+package address space is reported separately from committed CPU bytes, and
+allocator capacity is not double-counted as live GPU content. Slice D's
+pressure and connected evidence is
+`docs/research/2026-07-24-slice-d-unified-residency-report.md`.
+
 The remaining aggregation is primarily `_playerController`'s player-specific
 movement plus the separate `WorldEntity`/animation/physics component types.
 Those should become ONE class:

docs/architecture/worldbuilder-inventory.md

@@ -230,6 +230,20 @@ 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.
 
+**Unified residency policy seam (2026-07-24).** The extracted WB caches remain
+the physical owners of mesh, arena, atlas, and texture resources.
+`AcDream.App.Rendering.Residency.ResidencyManager` adds an acdream-owned typed
+policy/diagnostic layer over them: generation-safe asset handles, independent
+owner tokens and leases, immutable startup budgets, aggregate accounting, and
+bounded trim requests. It never stores or deletes a GL name. Existing owners
+perform logical eviction and fence-delayed physical release on the render
+thread. The same ledger observes the prepared-package mapping, prepared/staged
+CPU mesh data, decoded animation/audio data, and retained shared-alpha scratch
+without double-counting the package's clean memory-mapped pages as committed
+heap. Deterministic pressure tests exceed every configured ceiling and prove
+zero-charge teardown. Connected evidence:
+`docs/research/2026-07-24-slice-d-unified-residency-report.md`.
+
 **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