ship(O): Phase O — DatPath Unification — SHIPPED

ONE thing touches the DATs. WB code lives in our repo:
- src/AcDream.Core/Rendering/Wb/ — pure helpers (5 files, ~782 LOC)
- src/AcDream.App/Rendering/Wb/ — GL infra + mesh pipeline (~27 files, ~7K LOC)

Project references to WorldBuilder.Shared + Chorizite.OpenGLSDLBackend
dropped from AcDream.App.csproj and AcDream.Core.csproj.
references/WorldBuilder/ remains in-tree as read-reference only.

DefaultDatReaderWriter eliminated; DatCollection is the only dat reader.
WbMeshAdapter consumes our DatCollection via DatCollectionAdapter
(O-D7 fallback adapter; ObjectMeshManager has 26 _dats.X call sites,
exceeding the 20 refactor threshold).

Visual side-by-side passed: Holtburg town, inn interior, dungeon all
render identically to pre-O.

Doc updates:
- CLAUDE.md: rewrote WB integration cribs to point at extracted code.
  Code Structure Rules rule 2 updated to remove stale seam names.
  "Currently working toward" flipped from Phase O to M1.5 resumption.
- docs/architecture/worldbuilder-inventory.md: Phase O banner added.
  Status/integration model updated to post-O ownership. Workflow
  section updated to reference our extracted tree, not WB project ref.
- docs/plans/2026-04-11-roadmap.md: Phase O moved to shipped table.
  Phase O "ahead" block collapsed to SHIPPED note. M1.5 block updated
  to ACTIVE (Phase O shipped; resuming from 2026-05-20 baseline).
- docs/plans/2026-05-12-milestones.md: M1.5 heading updated to ACTIVE;
  Phase O ship writeup prepended to the M1.5 block.

Phase O ship closes Tasks O-T1..O-T7 shipped across this session.
Specs + audit + plan: docs/superpowers/{specs,plans}/2026-05-21-phase-o-*

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

docs/plans/2026-05-12-milestones.md

@@ -185,7 +185,18 @@ close range and the player sees "You pick up the X." in chat.
 
 ---
 
-### M1.5 — "Indoor world feels right" — 🔵 NEXT (active, opened 2026-05-20)
+### M1.5 — "Indoor world feels right" — 🔵 ACTIVE (resumed 2026-05-21 after Phase O ship)
+
+**Phase O — DatPath Unification — shipped 2026-05-21.** ONE thing
+touches the DATs. ~33 WB files (~7.7K LOC) extracted into
+`src/AcDream.{Core,App}/Rendering/Wb/`; project references to
+`WorldBuilder.Shared` + `Chorizite.OpenGLSDLBackend` dropped;
+`DefaultDatReaderWriter` eliminated. Visual side-by-side passed at
+Holtburg town, inn interior, and dungeon. Phase O pre-empted M1.5
+per user direction 2026-05-21; M1.5 now resumes from the 2026-05-20
+baseline with no code changes lost — Phase O did not touch dat-loading
+infrastructure for physics or collision, only the rendering pipeline.
+M1.5's planned phases (A6 + A7) are unaffected.
 
 **Demo scenario:** Enter the Holtburg Sewer dungeon through the in-town entry
 portal. Navigate to the end (5–7 rooms with stairs + a multi-Z chamber).