Drop wall + fence feature flags: register unconditionally; remove verification logs

Parity comparison against deployed prod is now cleaner than juggling
env-var flag toggles locally. Both kinds enter builtinPlugin.nodes
unconditionally; the Phase 0 dispatch shims (<LegacySystem kind="X">
wrappers + NodeRenderer's registry-first branch) handle the cutover.

Files deleted:
 - packages/nodes/src/wall/feature-flag.ts
 - packages/nodes/src/fence/feature-flag.ts

Files changed:
 - packages/nodes/src/index.ts: drops isWallRegistryEnabled /
   isFenceRegistryEnabled gates; wallDefinition + fenceDefinition
   land directly in builtinPlugin.nodes.
 - packages/nodes/src/{wall,fence}/index.ts: drop the flag re-export.
 - packages/nodes/src/{wall,fence}/renderer.tsx: drop the one-shot
   verification console.info. Same for the system.tsx wrappers.
 - packages/viewer/src/components/renderers/{wall,fence}/{wall,fence}-
   renderer.tsx: drop the paired [X:legacy] verification logs (no
   longer comparing flag-toggled paths).

Net DX: no env var to remember when starting `bun dev:community`. To
A/B test, compare against editor.pascal.app deployed prod.

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

packages/nodes/src/wall/feature-flag.ts

@@ -1,23 +0,0 @@
-/**
- * Feature flag for the registry-driven wall.
- *
- * Wall is the Phase 3 stress test — its scope is large enough (5 affordances,
- * miter cascade, host re-anchor, slab/zone dirty propagation, undo
- * correctness) that flipping it on uncontrolled would risk silently
- * regressing every wall scene in production.
- *
- * Pattern mirrors `NEXT_PUBLIC_USE_REGISTRY_FOR_SPAWN` used during the
- * Phase 2 spawn migration: when ON, `wallDefinition` is appended to
- * `builtinPlugin.nodes` and the Phase 0 dispatch shims take over wall
- * rendering / tooling. When OFF, the legacy wall paths run unchanged.
- *
- * Literal `process.env.NEXT_PUBLIC_USE_REGISTRY_FOR_WALL` access is required
- * — Next.js only inline-substitutes literal env reads, so `process.env[name]`
- * with a variable would always read undefined in client bundles.
- *
- * Drop this file the moment Phase 3 parity is signed off and wall is
- * registered unconditionally.
- */
-export const isWallRegistryEnabled = (): boolean => {
-  return process.env.NEXT_PUBLIC_USE_REGISTRY_FOR_WALL === 'true'
-}

packages/nodes/src/wall/index.ts

@@ -1,3 +1,2 @@
 export { wallDefinition } from './definition'
-export { isWallRegistryEnabled } from './feature-flag'
 export { WallNode } from './schema'

packages/nodes/src/wall/renderer.tsx

@@ -14,8 +14,7 @@ import { BufferGeometry, Float32BufferAttribute, type Mesh } from 'three'
  * items) inside the wall's local frame.
  *
  * Behaviorally identical to the legacy `WallRenderer` in
- * `@pascal-app/viewer/components/renderers/wall/wall-renderer.tsx` — same
- * placeholder geometry, same material lookup, same dirty-mark on mount.
+ * `@pascal-app/viewer/components/renderers/wall/wall-renderer.tsx`.
  * Phase 6 deletes the legacy file; until then both coexist and the Phase 0
  * shims pick which one renders based on `nodeRegistry.has('wall')`.
  *
@@ -25,12 +24,6 @@ import { BufferGeometry, Float32BufferAttribute, type Mesh } from 'three'
  * That decision lands in a later milestone; for now the system retains
  * ownership of the rebuild loop.
  */
-// Phase 3 verification — set once when the first registry-driven wall
-// renderer mounts. Stops the log firing per wall (a scene with 200 walls
-// would spam the console). Drop alongside the feature flag at Phase 3
-// sign-off.
-let didLogFirstRegistryWallMount = false
-
 function createEmptyWallGeometry(): BufferGeometry {
   const geometry = new BufferGeometry()
   geometry.setAttribute('position', new Float32BufferAttribute([], 3))
@@ -55,14 +48,6 @@ const WallRenderer = ({ node }: { node: WallNode }) => {
     useScene.getState().markDirty(node.id)
   }, [node.id])
 
-  useEffect(() => {
-    if (didLogFirstRegistryWallMount) return
-    didLogFirstRegistryWallMount = true
-    console.info(
-      '[wall:registry] first registry-driven WallRenderer mounted — legacy WallRenderer is NOT in use',
-    )
-  }, [])
-
   useEffect(() => {
     return () => {
       placeholderGeometry.dispose()

packages/nodes/src/wall/system.tsx

@@ -1,12 +1,11 @@
 'use client'
 
 import { WallCutout, WallSystem } from '@pascal-app/viewer'
-import { useEffect } from 'react'
 
 /**
  * Registry-driven wall system bundle.
  *
- * Wall has two per-frame concerns that need to mount when the kind is
+ * Wall has two per-frame concerns that mount when the kind is
  * registry-driven:
  *
  *  - **`WallSystem`** — reads `dirtyNodes`, batches by level, runs
@@ -17,28 +16,16 @@ import { useEffect } from 'react'
  *  - **`WallCutout`** — cutaway-mode hide/show logic based on camera
  *    direction and `frontSide` / `backSide` interior/exterior tags.
  *
- * Both already live in `@pascal-app/viewer` and are wrapped in
- * `<LegacySystem kind="wall">` at the legacy mount point. When the
- * `wall` kind appears in `nodeRegistry`, those wrappers short-circuit and
- * this bundle takes over the mount via `RegisteredSystems`. The
- * components themselves are unchanged — no logic duplication during
- * Phase 3.
+ * Both live in `@pascal-app/viewer` and are wrapped in
+ * `<LegacySystem kind="wall">` at the legacy mount point. With wall
+ * registered, those wrappers short-circuit and this bundle takes over
+ * the mount via `RegisteredSystems`. The components themselves are
+ * unchanged — no logic duplication.
  *
  * Phase 6 deletes the legacy `<LegacySystem kind="wall">` wrappers; until
  * then this file is the single mount surface for wall's per-frame work.
  */
 const WallSystems = () => {
-  // Phase 3 verification log — confirms the registry took over the wall
-  // dispatch. Fires once when RegisteredSystems lazy-loads this bundle (so
-  // exactly once per viewer mount when NEXT_PUBLIC_USE_REGISTRY_FOR_WALL=true).
-  // Drop alongside the feature flag at Phase 3 sign-off.
-  useEffect(() => {
-    console.info('[wall:registry] system bundle mounted — registry path active')
-    return () => {
-      console.info('[wall:registry] system bundle unmounted')
-    }
-  }, [])
-
   return (
     <>
       <WallSystem />