diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..51bd619
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+target/
+*.pdb
+*.obj
+*.mtl
+*.svg
+*.png
+*.jsonl
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..4a64f7b
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "crates/gamecult_geometry_csg"]
+	path = crates/gamecult_geometry_csg
+	url = https://github.com/GameCult/GameCult.Geometry.Csg
diff --git a/AGENTS.md b/AGENTS.md
index 06e81ae..facd1c4 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -1,13 +1,45 @@
-# VibeGeometry Archive Instructions
+# VibeGeometry Instructions
 
-This repository is archived provenance, not a live work surface.
+## Purpose
 
-- Do not add build, package, CI, workspace, submodule, or runtime authority.
-- Preserve repository history.
-- Route geometry implementation to `GameCult/CultLib`, principally
-  `packages/gamecult-geometry-rs` and `src/GameCult.Geometry`.
-- Source witness: `vg-csg` commit
-  `8f070f4fb75d43f9bfaf9ca05dc66a5580809134`.
-- Destination commit: CultLib `6b44f969`.
+VibeGeometry is the repository shell for the CultGeometry CSG Rust work surface.
 
-The README and `state/map.yaml` are the live provenance pointers.
+The previous scene-generation mission has been deleted from the live tree. Do
+not recreate it unless the user explicitly asks to recover a historical artifact
+from git history.
+
+The live mission:
+
+```text
+domain/tree intent
+-> LOD-aware CSG hierarchy
+-> camera/frustum selected cut
+-> triangle and collider output
+```
+
+## Ownership
+
+- `crates/gamecult_geometry_csg` owns implementation.
+- The root workspace owns only wiring, submodule state, and very small guidance.
+- If a new domain-tree DSL, selected-cut planner, streaming mesh cache, or
+  frustum query API is needed, start inside CultGeometry CSG.
+- Do not add root-level helper runtimes, prompt packs, visual translation
+  corpora, or schema scaffolds.
+
+## Commands
+
+```powershell
+git submodule update --init --recursive
+cargo test
+cargo clippy --all-targets --all-features
+cargo run -p gamecult-geometry-csg --release --example csg_perf_fixture
+```
+
+## Discipline
+
+- Keep the runtime path legible: input tree, selected cut, brush/CSG lowering,
+  emitted triangles, and timing evidence.
+- Prefer tests and performance receipts inside CultGeometry CSG over root-level notes.
+- Preserve exact parity only for public behavior the crate claims to mirror.
+- RealtimeCSG is a reference seam, not an idol.
+- Do not let historical scene-generation work become a live dependency again.
diff --git a/CLAUDE.md b/CLAUDE.md
new file mode 100644
index 0000000..640c1a1
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1,3 @@
+Repository doctrine for this project lives in AGENTS.md, shared with Codex.
+
+@AGENTS.md
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+ "wasmparser",
+ "wit-parser",
+]
+
+[[package]]
+name = "wit-parser"
+version = "0.244.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ecc8ac4bc1dc3381b7f59c34f00b67e18f910c2c0f50015669dde7def656a736"
+dependencies = [
+ "anyhow",
+ "id-arena",
+ "indexmap",
+ "log",
+ "semver",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "unicode-xid",
+ "wasmparser",
+]
+
+[[package]]
+name = "zerocopy"
+version = "0.8.48"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eed437bf9d6692032087e337407a86f04cd8d6a16a37199ed57949d415bd68e9"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.48"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70e3cd084b1788766f53af483dd21f93881ff30d7320490ec3ef7526d203bad4"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "zmij"
+version = "1.0.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..71cda02
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,3 @@
+[workspace]
+members = ["crates/gamecult_geometry_csg"]
+resolver = "3"
diff --git a/README.md b/README.md
index f1fe0ac..178a302 100644
--- a/README.md
+++ b/README.md
@@ -1,14 +1,51 @@
-# VibeGeometry (archived)
+# VibeGeometry
 
-VibeGeometry no longer owns a build, package, crate, or runtime. Its CSG work
-now lives in [`GameCult/Geometry`](https://github.com/GameCult/CultLib/tree/main/packages/gamecult-geometry-rs).
+VibeGeometry is the historical shell around **CultGeometry CSG**, whose clean
+package identity is `GameCult.Geometry.Csg`.
 
-Provenance:
+The previous scene-generation research era is gone from the live tree. It can
+stay in git history, where failed experiments are useful without being allowed
+to hold a steering wheel.
 
-- Last imported `vg-csg` source witness: `8f070f4fb75d43f9bfaf9ca05dc66a5580809134`.
-- Absorption commit in `GameCult/CultLib`: `6b44f969` (`Absorb CSG kernel into GameCult.Geometry`).
-- This repository's earlier experiments remain available through git history.
+The live mission is narrower and sharper:
 
-Do not add new implementation here. Continue geometry work in
-`packages/gamecult-geometry-rs` or the corresponding `GameCult.Geometry`
-runtime surface in CultLib.
+```text
+domain/tree intent
+-> LOD-aware CSG hierarchy
+-> camera/frustum selected cut
+-> triangle and collider output in milliseconds
+```
+
+The actual work surface is the Rust crate at:
+
+- `crates/gamecult_geometry_csg`
+- upstream: `https://github.com/GameCult/GameCult.Geometry.Csg`
+
+## What This Repo Owns
+
+- The CultGeometry CSG submodule pointer.
+- A minimal Rust workspace that builds that crate.
+- Thin operating notes that keep future work pointed at runtime CSG, not legacy
+  scene-generation scaffolding.
+
+## What CultGeometry CSG Owns
+
+- Brush and CSG tree APIs.
+- RealtimeCSG-shaped public seams where useful.
+- Parity fixtures for claimed public behavior.
+- Dirty rebuild and demand-frontier experiments.
+- Mesh/triangle output and receipt examples.
+- The future LOD-aware selected-cut runtime.
+
+## Commands
+
+```powershell
+git submodule update --init --recursive
+cargo test
+cargo clippy --all-targets --all-features
+cargo run -p gamecult-geometry-csg --release --example csg_perf_fixture
+```
+
+If a future task needs domain-tree DSL work, put it in CultGeometry CSG unless there is
+a proven reason it must live outside the crate. The default answer is simple:
+the geometry machine belongs where the geometry machine runs.
diff --git a/crates/gamecult_geometry_csg b/crates/gamecult_geometry_csg
new file mode 160000
index 0000000..b476a05
--- /dev/null
+++ b/crates/gamecult_geometry_csg
@@ -0,0 +1 @@
+Subproject commit b476a05eb5ea93ea86f44b09892e83f4bf9499b0
diff --git a/state/branches.json b/state/branches.json
deleted file mode 100644
index fe51488..0000000
--- a/state/branches.json
+++ /dev/null
@@ -1 +0,0 @@
-[]
diff --git a/state/evidence.jsonl b/state/evidence.jsonl
index 66b646d..7bbcac3 100644
--- a/state/evidence.jsonl
+++ b/state/evidence.jsonl
@@ -1,2 +1 @@
 {"type":"rebuild","status":"accepted","note":"VibeGeometry live tree was reduced to the vg-csg Rust work surface. Historical scene-generation research surfaces were removed from live authority; history remains in git."}
-{"type":"retirement","status":"accepted","source_witness":"8f070f4fb75d43f9bfaf9ca05dc66a5580809134","destination_repository":"GameCult/CultLib","destination_commit":"6b44f969","note":"Live CSG authority moved to GameCult.Geometry; VibeGeometry retains provenance through git history only."}
diff --git a/state/map.yaml b/state/map.yaml
index 853a2e2..6029563 100644
--- a/state/map.yaml
+++ b/state/map.yaml
@@ -1,16 +1,48 @@
-repository:
+experiment:
   name: VibeGeometry
-  status: archived_provenance
-  owns_live_implementation: false
+  status: runtime_csg_shell
+  phase: cultgeometry_csg_focus
+  premise: >
+    VibeGeometry is the thin historical shell around the CultGeometry CSG Rust
+    work surface, whose clean package identity is GameCult.Geometry.Csg.
 
-migration:
-  destination_repository: https://github.com/GameCult/CultLib
-  rust_surface: packages/gamecult-geometry-rs
-  dotnet_surface: src/GameCult.Geometry
-  source_witness: 8f070f4fb75d43f9bfaf9ca05dc66a5580809134
-  destination_commit: 6b44f969
+mission:
+  primary: >
+    Build a fast runtime CSG machine capable of lowering domain/tree intent into
+    an LOD-aware CSG hierarchy and emitting triangle/collider output for a
+    camera or frustum query in milliseconds.
+  work_surface: crates/gamecult_geometry_csg
 
-boundaries:
-  - No build, package, CI, workspace, submodule, or runtime authority lives here.
-  - Preserve historical experiments in git history.
-  - Continue all geometry implementation in GameCult/CultLib.
+hard_boundaries:
+  - Do not rebuild the historical scene-generation pipeline in this repo.
+  - Put implementation in `crates/gamecult_geometry_csg` unless a task proves a root-level
+    surface is necessary.
+  - Preserve exact parity only for public RealtimeCSG-style behavior the crate
+    explicitly claims to mirror.
+  - Runtime evidence must include selected-cut, dirty rebuild, emitted geometry,
+    and timing data where performance claims matter.
+
+live_architecture:
+  pipeline:
+    - Domain or tree intent enters CultGeometry CSG.
+    - The runtime chooses an LOD-aware selected cut for the requested view,
+      budget, dirty state, or output scope.
+    - The selected cut lowers to CSG/brush operations.
+    - The crate emits triangle and collider output plus receipt/timing evidence.
+  root:
+    - Minimal Cargo workspace.
+    - `crates/gamecult_geometry_csg` git submodule.
+    - Minimal README/AGENTS/state pointers.
+
+current_status:
+  summary: >
+    Root-level scene-generation surfaces have been deleted. CultGeometry CSG is the live
+    work surface for future domain-tree, LOD CSG, selected-cut, and triangle
+    emission work.
+  next_action: >
+    Continue inside `crates/gamecult_geometry_csg`: define the first LOD/query contract for
+    selected CSG output rather than adding new root scaffolding.
+
+remotes:
+  vibegeometry: https://github.com/GameCult/VibeGeometry
+  gamecult_geometry_csg: https://github.com/GameCult/GameCult.Geometry.Csg