diff --git a/.changeset/capture-exclude-build-volume.md b/.changeset/capture-exclude-build-volume.md
deleted file mode 100644
index 414b71a2..00000000
--- a/.changeset/capture-exclude-build-volume.md
+++ /dev/null
@@ -1,11 +0,0 @@
----
-"@chestnutlabs/gcode-renderer-three": minor
----
-
-`CaptureOptions` gains `includeBuildVolume?: boolean` (default `true`). Set it to `false` to exclude
-the whole build-volume group (grid + bed surface + origin + cage) from the off-screen capture render
-only — so `capture({ background: 'transparent', includeBuildVolume: false })` produces a clean
-toolpath-only cutout, matching `ModelRenderer` thumbnails. The live view is untouched (visibility is
-restored synchronously, no intermediate frame is painted). The option flows through
-`GcodePreviewControls.capture` to every adapter; it is a no-op where there is no build volume
-(`ModelViewer`) or no capture (the 2D renderer).
diff --git a/.changeset/consumer-ux-parity-dark-capabilities.md b/.changeset/consumer-ux-parity-dark-capabilities.md
deleted file mode 100644
index 830a660c..00000000
--- a/.changeset/consumer-ux-parity-dark-capabilities.md
+++ /dev/null
@@ -1,37 +0,0 @@
----
-"@chestnutlabs/gcode-preview-core": minor
-"@chestnutlabs/gcode-preview-vue": minor
-"@chestnutlabs/gcode-preview-react": minor
-"@chestnutlabs/gcode-preview-svelte": minor
-"@chestnutlabs/gcode-preview-element": minor
----
-
-Close the dark-capability gaps so no shipped capability is reachable only through the
-`raw.renderer()` escape hatch, with full parity across all four framework adapters (DD-031).
-
-**New on the public controller (`GcodePreviewControls`), so it flows to every adapter's `controls`:**
-
-- `getRenderStats()` — the DD-027 render-diagnostics snapshot (backend, GPU, geometry mode, build
-  parallelism, timings), previously reachable only on the Three renderer. Returns `null` on the 2D
-  renderer (which produces no GPU/geometry diagnostics — never a fabricated stats object).
-- `pickSegment(ndcX, ndcY, threshold?)` — source-mapping / segment picking, previously renderer-only.
-- `isColorModeAvailable(mode)` — the honest per-file color-mode capability gate.
-
-**New capability-aware state (`GcodePreviewState`):** `availableColorModes`, `hasRetractions`,
-`hasColorChanges` — refreshed after each parse, so a UI can offer and *explain* controls instead of
-guessing (e.g. gray out feature coloring on a file with no feature roles, with a reason).
-
-**Adapter parity:**
-
-- `hiddenFeatureRoles` is now a declarative prop (Vue/React/Svelte) and a `hidden-feature-roles`
-  attribute (Web Component) — the declarative form of `setFeatureRoleVisible` (hide Skirt/Brim to
-  declutter a part). Gate it on `capabilities.featureRoles`.
-- `capture()` is now a top-level method on the Vue/React/Svelte handles too, matching the Web
-  Component's `element.capture()`.
-- Web Component: `renderer`/`adjacentLayers` gain property accessors; the package now also re-exports
-  `RendererMode` and `PreviewRenderer`.
-
-All additive — existing code keeps working unchanged; the 2D renderer honors the widened contract as
-documented no-ops / honest `null`. The portable behavioral suite is extended (layer-range, color-mode
-gating, diagnostics + picking reachability) and gains a controls-completeness parity guard so a
-capability can no longer ship in core and silently vanish from an adapter.
diff --git a/.changeset/model-viewer-adapters.md b/.changeset/model-viewer-adapters.md
deleted file mode 100644
index 23ab1879..00000000
--- a/.changeset/model-viewer-adapters.md
+++ /dev/null
@@ -1,39 +0,0 @@
----
-"@chestnutlabs/gcode-model-renderer": minor
-"@chestnutlabs/gcode-preview-vue": minor
-"@chestnutlabs/gcode-preview-react": minor
-"@chestnutlabs/gcode-preview-svelte": minor
-"@chestnutlabs/gcode-preview-element": minor
----
-
-Make interactive **source-model viewing** (STL / 3MF) a first-class, declarative half of the SDK —
-the Prepare side alongside the toolpath Preview side — so consumers no longer have to drop to the
-imperative `createModelViewer` engine to show a model in a framework (DD-031).
-
-**New framework-neutral controller** (`@chestnutlabs/gcode-model-renderer`):
-
-- `createModelPreviewController(options)` — the Prepare-side analogue of `gcode-preview-core`'s toolpath
-  controller. It wraps the existing `createModelViewer` engine unchanged and adds what a framework
-  binding needs: canvas-deferred construction with `bindCanvas` (rebuilding on a canvas swap and
-  replaying the last source), a reactive `getState()`/`onStateChange()` snapshot derived from the
-  engine's events (`ModelPreviewState`: `loading`/`ready`/`rendererSupported`/`objectCount`/`materials`/
-  `instancedCount`/`decimationApplied`/`bounds`/`plates`/`hasPlates`/`cameraState`/`progress`/`error`),
-  and an op queue for calls made before the canvas binds. `ModelPreviewControls` exposes `setSource`,
-  `setView`, get/`setCameraState`, `setBackground`, `setInteractionQuality`, `setRenderScope`, `frame`,
-  `resize`, and `capture`.
-- A portable model behavioral suite ships via the `@chestnutlabs/gcode-model-renderer/testing` subpath
-  (`runModelBehavioralSuite`) with controls/state completeness parity guards.
-
-**New `/model` adapter subpath on every framework** — thin shells over the one controller, mirroring
-each framework's toolpath idiom:
-
-- `@chestnutlabs/gcode-preview-react/model` — `useModelViewer` hook + `<ModelViewer>` component.
-- `@chestnutlabs/gcode-preview-vue/model` — `useModelViewer` composable + `<ModelViewer>` component.
-- `@chestnutlabs/gcode-preview-svelte/model` — `createModelViewer` store/action + the raw
-  `@chestnutlabs/gcode-preview-svelte/model/ModelViewer.svelte` component.
-- `@chestnutlabs/gcode-preview-element/model` (+ `/model/define`) — the `<gcode-model-viewer>` custom
-  element (tag chosen to avoid the reserved `<model-viewer>`).
-
-All additive — the toolpath surface is unchanged, and toolpath-only consumers don't pull the model
-renderer (it lives behind the opt-in `/model` subpath). Every adapter passes the portable model
-behavioral suite; each package gains `@chestnutlabs/gcode-model-renderer` as a dependency.
diff --git a/README.md b/README.md
index 475b215f..f419091d 100644
--- a/README.md
+++ b/README.md
@@ -452,7 +452,7 @@ row inspects the *toolpath*, the bottom row presents the *source model* (see
 
 Design rationale, boundaries, and the accepted architecture live in
 [`docs/design/`](docs/design); the [docs index](docs/README.md) maps the whole set. Fourteen
-packages publish to npm in lockstep (currently **v0.19.0**) with npm provenance.
+packages publish to npm in lockstep (currently **v0.20.0**) with npm provenance.
 
 ## Development
 
diff --git a/RELEASE_REVIEW.md b/RELEASE_REVIEW.md
index 4173b390..b53c1d25 100644
--- a/RELEASE_REVIEW.md
+++ b/RELEASE_REVIEW.md
@@ -12,10 +12,10 @@
   parses them literally. Delete rows only for packages that did not change.
 -->
 
-# Release review — v0.19.0
+# Release review — v0.20.0
 
-**Review version:** v0.19.0
-**Changed-capability inventory diffed against:** `v0.18.0`
+**Review version:** v0.20.0
+**Changed-capability inventory diffed against:** `v0.19.0`
 
 This artifact records the per-release **Public Product + Documentation + Visual** reconciliation:
 before the `dev` -> `main` promotion, compare the changed capabilities below against the README,
@@ -28,9 +28,13 @@ each disposition. Guidance: CLAUDE.md "Public-docs completion check" and
 
 | Package | Changed src files | Changelog summary | Disposition |
 |---|--:|---|---|
-| `@chestnutlabs/gcode-preview-core` | 2 | feat(renderer): `setFeatureRoleVisible(role, visible)` — show/hide a single feature role | Status: reviewed |
-| `@chestnutlabs/gcode-renderer-three` | 2 | feat(renderer): `setFeatureRoleVisible(role, visible)` — show/hide a single feature role | Status: reviewed |
-| `@chestnutlabs/toolpath-core` | 1 | feat(renderer): `setFeatureRoleVisible(role, visible)` — show/hide a single feature role | Status: reviewed |
+| `@chestnutlabs/gcode-model-renderer` | 4 | Make interactive **source-model viewing** (STL / 3MF) a first-class, declarative half of the SDK — | Status: reviewed |
+| `@chestnutlabs/gcode-preview-core` | 4 | Close the dark-capability gaps so no shipped capability is reachable only through the | Status: reviewed |
+| `@chestnutlabs/gcode-preview-element` | 6 | Close the dark-capability gaps so no shipped capability is reachable only through the | Status: reviewed |
+| `@chestnutlabs/gcode-preview-react` | 7 | Close the dark-capability gaps so no shipped capability is reachable only through the | Status: reviewed |
+| `@chestnutlabs/gcode-preview-svelte` | 6 | Close the dark-capability gaps so no shipped capability is reachable only through the | Status: reviewed |
+| `@chestnutlabs/gcode-preview-vue` | 6 | Close the dark-capability gaps so no shipped capability is reachable only through the | Status: reviewed |
+| `@chestnutlabs/gcode-renderer-three` | 3 | `CaptureOptions` gains `includeBuildVolume?: boolean` (default `true`). Set it to `false` to exclude | Status: reviewed |
 
 Set each **Disposition** to one of `Status: reviewed` / `Status: no-change-needed` /
 `Status: not-applicable` (never `Status: pending`).
@@ -42,3 +46,27 @@ Set each **Disposition** to one of `Status: reviewed` / `Status: no-change-neede
 - **Visual review:** resolved — every changed user-facing capability is visually documented, or the coverage matrix records why not.
 
 _Resolve each marker above by replacing `pending` with `resolved` once reconciled._
+
+## Reconciliation notes (v0.20.0)
+
+All seven changed packages are the DD-031 consumer-UX / framework-parity pass, reconciled together:
+
+- **Product:** the whole point of this release is consumer-facing surface. `docs/README.md`
+  "Current state" leads with v0.20.0; the two-viewer (Preview + Prepare) story is accurate. The root
+  README and Pages homepage remain accurate (they describe the toolpath viewer + source-model
+  rendering; the new framework model adapters are additive API documented in the canonical adapter
+  docs). No existing product copy misrepresents the shipped software.
+- **Docs:** `docs/manual/adapters.md` gained "Two viewers: Preview and Prepare" + a per-framework
+  import table; all four adapter READMEs gained a "Model viewing (Prepare side)" section; the
+  `gcode-model-renderer` README documents `createModelPreviewController` + the `/testing` suite;
+  `CLAUDE.md`'s parity check now covers both viewer surfaces. `npm run docs:links` passes.
+- **Visual:** the interactive model viewer is now demonstrated in the Feature Lab + all four
+  showcases (Preview/Prepare toggle) and a minimal model page per framework; the coverage matrix
+  (`docs/VISUAL_FEATURE_COVERAGE.md` §6/§10) records this. Dark **app-UI** screenshots of Prepare
+  mode were captured for review but are **not yet canonical `docs/media`** — the manifest harness
+  emits the mid-grey capability presentation, not app chrome; that gap is explicitly recorded and
+  carried to the next Visual Review. No shipped capability's existing media is now stale.
+- **Framework parity:** every new controller/model capability is exposed across Vue, React, Svelte,
+  and the Web Component (declaratively where it belongs; the `<gcode-model-viewer>` tag and the
+  `/model` subpath are documented intentional differences), exercised by the portable behavioral
+  suites with controls/state completeness parity guards for both the toolpath and model surfaces.
diff --git a/docs/README.md b/docs/README.md
index 06b6a840..ae3fd213 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -39,7 +39,7 @@ See also [`../PROJECT_SETUP.md`](../PROJECT_SETUP.md) for the local environment
 Provenance of inherited vs. Chestnut code, the exact founding baseline, and the branch mapping are
 tracked in [`UPSTREAM_PROVENANCE.md`](UPSTREAM_PROVENANCE.md).
 
-## Current state (updated 2026-08-28 — **v0.19.0 shipped to npm** (14 lockstep pkgs): a new **`setFeatureRoleVisible(role, visible)`** on the toolpath renderer and the shared controls hides or shows a single **feature role** — e.g. hide brim/skirt to declutter a part preview, or isolate support — by collapsing those per-segment moves to GPU-discarded geometry and restoring them byte-for-byte; it's extrude-only, capability-gated (`featureRoles: 'known'`), and **byte-identical when unused**. Shipped alongside a **public-product + documentation pass**: GitHub Pages is now a visual product manual — a product-first homepage, a comprehensive **feature gallery** with real screenshots plus scrub/build-up **animations**, and screenshots across the concept pages — backed by a maintained **Visual Feature Coverage Matrix** ([`VISUAL_FEATURE_COVERAGE.md`](VISUAL_FEATURE_COVERAGE.md)), a canonical mid-grey documentation-capture look, and an **enforced per-release Public Product + Docs + Visual review** (`RELEASE_REVIEW.md`) that blocks the `dev → main` promotion until every changed capability is reconciled. Prior: **v0.18.0** (14 lockstep pkgs): the parser now executes the full **RS274NGC programming layer** that CAM / LinuxCNC output uses to *generate* geometry — numbered/named/global **parameters**, bracket **expressions** (degree trig + the full operator set), **O-word control flow** (`if`/`elseif`/`else`, `while`/`do`/`repeat`, `break`/`continue`), and in-file **subroutines** (`sub`/`call`/`return` with recursion-safe LinuxCNC scoping) — so a bolt circle written as a `while` loop, or a feature factored into a called sub, resolves to the real toolpath instead of rendering empty; all bounded (`maxProgramIterations` / `maxCallDepth` — a hostile program wastes only bounded CPU), honesty-tiered (`parametricProgram` `known` / `approximated`), and **byte-identical** for FDM / non-parametric input ([DD-017](design/DD-017-rs274ngc-parametric-programs.md), phases 1–3). Plus a generic **renderer/viewer interoperability** batch ([DD-030](design/DD-030-renderer-viewer-interop.md)): interactive **`capture()` → `Blob`** (render-to-target — user-selected thumbnails, large-file fallback, screenshots) on the controls (all four adapters inherit it) and the model viewer; **per-plate render scope** so a single-plate variant of a multi-plate project renders and frames just *that* plate (`renderModelStill({ renderScope })` + `ModelViewer.setRenderScope()`); and **non-rectangular build beds** (`BuildVolumeDef.shape` — delta / round / polygon, with the floor grid clipped to the true outline). Prior: **v0.17.0** — `frameContent: 'object'` now frames the **printed model** — a non-model classifier excludes slicer housekeeping (skirt, brim, raft, prime/wipe tower, purge) by object membership when the file carries it, else by feature role, producing a new additive `modelBounds` and a `nonModelClassification` confidence (`known` / `inferred` / `unavailable`); the framing precedence is `modelBounds → objectBounds → bounds`, so a Bambu wipe tower at the plate edge no longer inflates the frame — validated on a real 6.5 M-segment four-colour plate ([DD-026](design/DD-026-non-model-geometry-classification-and-object-framing.md) T2), and the OrcaSlicer/Bambu adapter now reads `FLUSH_START/END` and `WIPE_TOWER_START/END` brackets into first-class `Purge` / `WipeTower` roles. `renderStill` gains **`tubeByteBudget`** so a deployment with RAM to spare can retain full tubes on a large plate instead of silently falling to lines behind the conservative default — a separate axis from the parallel build's `geometryMemoryBudgetBytes` (CPU→build speed vs RAM→tubes-retained). And a geometry-worker-pool failure now degrades to a **serial main-thread tube build** — never an unhandled rejection or a silent drop to lines — so the [DD-028](design/DD-028-parallel-geometry-worker-pool.md) pool is safe to enable in headless bundlers that cannot construct the worker URL. Prior: **v0.16.0** — heavy toolpaths now build their tube geometry **off the main thread** on a capability-sized, memory-bounded worker pool — byte-identical to the serial build and degrading to continuous lines (never chopped) if a worker fails ([DD-028](design/DD-028-parallel-geometry-worker-pool.md)); the viewer prepares the **complete** geometry and reveals it **once** via `progressivePreview: 'auto' | 'lines' | 'hold' | 'off'` (`'hold'` reveals only the final, correctly-coloured build — no low-quality preview, no segment-dropping), backed by a staged `stage` event that carries a real building-geometry `%` ([DD-029](design/DD-029-preparation-and-reveal.md)); a new **render-diagnostics** surface — `getRenderStats()` plus a `renderStats` event — reports whether WebGL is running on **hardware or software**, the GPU renderer, geometry mode, segment/vertex counts, draw calls, and timings, with honest `null`s rather than guesses ([DD-027](design/DD-027-render-diagnostics.md)); and the slicer adapters now capture real **object labels and feature roles** from OrcaSlicer, PrusaSlicer, ideaMaker, and Simplify3D, with first-class non-model **FeatureRoles** — PrimeTower, WipeTower, Raft, Purge ([DD-026](design/DD-026-non-model-geometry-classification-and-object-framing.md) T1/T2). Prior: **v0.15.0** — a **`progressivePreview`** curtain (`'lines'` default / `'hold'` / `'off'`) over the during-parse preview, across the toolpath renderer, core controller, and all four adapters ([#373](https://github.com/ChestnutLabs/gcode-preview/pull/373)). `'hold'` keeps the progress signal (drive a `%` bar from `parse-progress`) but reveals **only the final, correctly-coloured, policy-quality build** — replacing the neutral-then-recolour "double render" on streamed files with a single clean reveal; `'off'` suppresses the built-in preview for a consumer-driven loading treatment; `'lines'` (the default) preserves today's streaming line preview. Orthogonal to `quality`/`qualityMode` — the revealed representation is always the policy-correct one, never a silent large-file lines fallback. Prior: **v0.14.0** — a **`qualityMode`** fidelity policy (Full / Adaptive / Fast) across the toolpath renderer, core controller, and all four adapters ([DD-023](design/DD-023-capability-aware-render-budget.md) §4 D6, Phase B) — `'full'` renders the COMPLETE representation (no every-Nth decimation, full-radial continuous tubes, no budget→lines fallback); `'adaptive'` (default) is the capability-aware auto path; `'fast'` is flat lines. Plus a **continuity correction: tubes are never segment-decimated** — `autoDecimation`'s every-Nth drop was chopping tube geometry into disconnected stubs (the RR-006 continuity break via the decimation lever the v0.12.0 fix didn't cover); tube memory is now bounded ONLY by continuity-preserving radial reduction, degrading to continuous lines when even a 3-sided tube won't fit — never chopped. The honest order is full-radial tubes → lower-radial tubes → continuous lines. (Classifier-driven auto budget + the too-heavy signal land later.) Prior: **v0.13.0** (14 lockstep pkgs), a farm-workload batch: render the colour/structure a source model actually carries, stop over-degrading normal large plates, and lay the capability-aware groundwork. **Toolpath:** the tube memory budget now counts only **extrude** segments (not travel/wipe), so a heavy-travel plate (800+ parts) renders as continuous tubes instead of dropping to lines; a new **`filament` colour mode** renders a toolpath in the file's OWN filament colours (resolved from parse metadata before the first build — no neutral-then-recolour flash on raw `.gcode`). **Source model** ([`gcode-model-renderer`](../packages/gcode-model-renderer)): **multi-plate structure** ([DD-025](design/DD-025-multi-plate-model-structure.md) Phase A — `ModelScene.plates` + placement-level `plateIds` + `capabilities.plates`, declared-only), **Bambu/Orca per-object extruder colours** (a `.3mf` coloured via the project convention renders in colour, not neutral), and **staged loading progress** ([DD-024](design/DD-024-staged-loading-progress.md) Phase A — typed, consumer-neutral, generation-scoped, never a faked %). **Capability groundwork** ([DD-023](design/DD-023-capability-aware-render-budget.md) Phase A): a shared fail-safe WebGL hw/sw classifier + `QualityPolicy`/`CapabilityHint` types (no behaviour change yet; capability-aware budgets + `qualityMode` land later). Prior: **v0.12.0** — fixes the two regressions surfaced against v0.11.0 and promotes the tube memory bound to an honest control. **Tube rendering** ([RR-006](research/RR-006-tube-mesh-memory-and-large-file-budget.md) correction) now bounds memory by **coarsening the cross-section** (fewer radial sides) at full segment continuity — replacing the v0.10.0 drop-every-Nth-segment budget that shredded tubes into spiky capped stubs; new public `tubeByteBudget` option, `tubeSegmentBudget` deprecated, lines fallback only when even a 3-sided tube can't fit. **Model estimate** now counts **unique** master triangles, not baked-per-placement, so a full-sheet instanced `.3mf` plate (~40 reused copies) parses/renders at default limits instead of falsely rejecting as "too large" (instance bomb still guarded by `maxInstances`). Prior: **v0.11.0** — **instance-aware source-model rendering** ([DD-022](design/DD-022-model-instancing-and-lod.md), Phases 0–1) — a full-sheet `.3mf` that reuses a master mesh via production-extension components / repeated build items now renders each master **once** via GPU instancing (three `InstancedMesh`) instead of baking a copy per placement, so memory scales with unique geometry not copy count (a ~40× instanced plate that used to exceed the triangle limit now renders); plus a **sub-second byte-estimate fast-reject** for genuinely oversize / instance-bomb files, and `instancedCount` + `decimationApplied` disclosure on the model `ready`/still result. **v0.10.0** added a **tube-mesh memory budget** so large forced-`tubes` renders (≈1.6 M+ segments) no longer OOM a 2 GB render worker — tubes decimate to a `TUBE_SEGMENT_BUDGET`, disclosed via `decimationApplied` (also on `RenderStillResult`), layer boundaries preserved ([RR-006](research/RR-006-tube-mesh-memory-and-large-file-budget.md)); plus a fix so `frameContent:'object'` frames the printed object on AnycubicSlicerNext and every object-labeling file (`objectBounds` is refreshed after dialect annotation). **v0.9.0** shipped the **interactive source-model viewer** `createModelViewer` in `@chestnutlabs/gcode-model-renderer` — the live orbit/zoom/pan analogue of `renderModelStill` for an STL or 3MF, over a shared interactive "stage" extracted in `gcode-renderer-three`, with an open-`kind` model-source loader registry (STL/3MF now, OBJ/STEP/PLY later without an API change), capability-honest color pass-through, and a `renderer-unsupported` fallback ([DD-021](design/DD-021-interactive-model-viewer.md)). v0.8.1 added production Bambu/Orca 3MF `paint_color` multicolor decode ([RR-005](research/RR-005-3mf-paint-color-facet-format.md)) so a designer's painted model renders in its true colors without slicing, plus a filament-slot dedup fix. v0.7.0 shipped the presentation package `@chestnutlabs/gcode-model-renderer` (headless `renderModelStill`, STL + 3MF multi-object/material, [DD-018](design/DD-018-model-renderer.md)), the 3MF Production-Extension (`p:path`) reader, and a toolpath-renderer batch — slice metadata on `ready`, structured multi-plate metadata, independent build-volume cage, frame-to-content, interaction-aware render quality ([DD-020](design/DD-020-interaction-aware-quality.md)), and a `renderStill` background option. v0.5.x added camera preset-views + serializable `CameraState`, zoom-to-cursor, keyboard-a11y, `capabilities`/`warnings` on `ready`, and the Vue/Svelte adapter mount-prop fixes (epics #279/#296/#306/DD-021). DD-017 RS274NGC parametric programs proposed, unbuilt)
+## Current state (updated 2026-08-30 — **v0.20.0 shipped to npm** (14 lockstep pkgs): interactive **source-model viewing** (STL / 3MF) becomes a first-class, declarative half of the SDK — the Prepare side alongside the toolpath Preview side. A framework-neutral **`createModelPreviewController`** (wrapping the existing `createModelViewer` engine unchanged) plus a **`<ModelViewer>`** adapter on each framework's **`/model`** subpath — `@chestnutlabs/gcode-preview-{react,vue,svelte,element}/model` (the Web Component ships as `<gcode-model-viewer>`) — give the source model the same declarative parity as the toolpath component: lifecycle, props/options, events, capability exposure (the honest `materials` colour tier + object/instance counts), cleanup and error handling, all locked by a portable model behavioral suite with its own controls/state parity guard ([DD-031](design/DD-031-consumer-ux-and-framework-parity.md)). Shipped with the **dark-capability closure** across all four toolpath adapters so no shipped capability is reachable only through the raw-renderer escape hatch — `getRenderStats()` render diagnostics, `pickSegment()` source-mapping, `isColorModeAvailable()`, declarative `hiddenFeatureRoles`, and handle-level `capture()` — plus `capture({ includeBuildVolume: false })` for grid-free toolpath cutouts. The demo is rebuilt as a viewport-first **Feature Lab** and every framework ships **two-tier examples** (a minimal getting-started page + a full capability-aware showcase, with a Preview/Prepare toggle) on the real published adapters. Prior: **v0.19.0** (14 lockstep pkgs): a new **`setFeatureRoleVisible(role, visible)`** on the toolpath renderer and the shared controls hides or shows a single **feature role** — e.g. hide brim/skirt to declutter a part preview, or isolate support — by collapsing those per-segment moves to GPU-discarded geometry and restoring them byte-for-byte; it's extrude-only, capability-gated (`featureRoles: 'known'`), and **byte-identical when unused**. Shipped alongside a **public-product + documentation pass**: GitHub Pages is now a visual product manual — a product-first homepage, a comprehensive **feature gallery** with real screenshots plus scrub/build-up **animations**, and screenshots across the concept pages — backed by a maintained **Visual Feature Coverage Matrix** ([`VISUAL_FEATURE_COVERAGE.md`](VISUAL_FEATURE_COVERAGE.md)), a canonical mid-grey documentation-capture look, and an **enforced per-release Public Product + Docs + Visual review** (`RELEASE_REVIEW.md`) that blocks the `dev → main` promotion until every changed capability is reconciled. Prior: **v0.18.0** (14 lockstep pkgs): the parser now executes the full **RS274NGC programming layer** that CAM / LinuxCNC output uses to *generate* geometry — numbered/named/global **parameters**, bracket **expressions** (degree trig + the full operator set), **O-word control flow** (`if`/`elseif`/`else`, `while`/`do`/`repeat`, `break`/`continue`), and in-file **subroutines** (`sub`/`call`/`return` with recursion-safe LinuxCNC scoping) — so a bolt circle written as a `while` loop, or a feature factored into a called sub, resolves to the real toolpath instead of rendering empty; all bounded (`maxProgramIterations` / `maxCallDepth` — a hostile program wastes only bounded CPU), honesty-tiered (`parametricProgram` `known` / `approximated`), and **byte-identical** for FDM / non-parametric input ([DD-017](design/DD-017-rs274ngc-parametric-programs.md), phases 1–3). Plus a generic **renderer/viewer interoperability** batch ([DD-030](design/DD-030-renderer-viewer-interop.md)): interactive **`capture()` → `Blob`** (render-to-target — user-selected thumbnails, large-file fallback, screenshots) on the controls (all four adapters inherit it) and the model viewer; **per-plate render scope** so a single-plate variant of a multi-plate project renders and frames just *that* plate (`renderModelStill({ renderScope })` + `ModelViewer.setRenderScope()`); and **non-rectangular build beds** (`BuildVolumeDef.shape` — delta / round / polygon, with the floor grid clipped to the true outline). Prior: **v0.17.0** — `frameContent: 'object'` now frames the **printed model** — a non-model classifier excludes slicer housekeeping (skirt, brim, raft, prime/wipe tower, purge) by object membership when the file carries it, else by feature role, producing a new additive `modelBounds` and a `nonModelClassification` confidence (`known` / `inferred` / `unavailable`); the framing precedence is `modelBounds → objectBounds → bounds`, so a Bambu wipe tower at the plate edge no longer inflates the frame — validated on a real 6.5 M-segment four-colour plate ([DD-026](design/DD-026-non-model-geometry-classification-and-object-framing.md) T2), and the OrcaSlicer/Bambu adapter now reads `FLUSH_START/END` and `WIPE_TOWER_START/END` brackets into first-class `Purge` / `WipeTower` roles. `renderStill` gains **`tubeByteBudget`** so a deployment with RAM to spare can retain full tubes on a large plate instead of silently falling to lines behind the conservative default — a separate axis from the parallel build's `geometryMemoryBudgetBytes` (CPU→build speed vs RAM→tubes-retained). And a geometry-worker-pool failure now degrades to a **serial main-thread tube build** — never an unhandled rejection or a silent drop to lines — so the [DD-028](design/DD-028-parallel-geometry-worker-pool.md) pool is safe to enable in headless bundlers that cannot construct the worker URL. Prior: **v0.16.0** — heavy toolpaths now build their tube geometry **off the main thread** on a capability-sized, memory-bounded worker pool — byte-identical to the serial build and degrading to continuous lines (never chopped) if a worker fails ([DD-028](design/DD-028-parallel-geometry-worker-pool.md)); the viewer prepares the **complete** geometry and reveals it **once** via `progressivePreview: 'auto' | 'lines' | 'hold' | 'off'` (`'hold'` reveals only the final, correctly-coloured build — no low-quality preview, no segment-dropping), backed by a staged `stage` event that carries a real building-geometry `%` ([DD-029](design/DD-029-preparation-and-reveal.md)); a new **render-diagnostics** surface — `getRenderStats()` plus a `renderStats` event — reports whether WebGL is running on **hardware or software**, the GPU renderer, geometry mode, segment/vertex counts, draw calls, and timings, with honest `null`s rather than guesses ([DD-027](design/DD-027-render-diagnostics.md)); and the slicer adapters now capture real **object labels and feature roles** from OrcaSlicer, PrusaSlicer, ideaMaker, and Simplify3D, with first-class non-model **FeatureRoles** — PrimeTower, WipeTower, Raft, Purge ([DD-026](design/DD-026-non-model-geometry-classification-and-object-framing.md) T1/T2). Prior: **v0.15.0** — a **`progressivePreview`** curtain (`'lines'` default / `'hold'` / `'off'`) over the during-parse preview, across the toolpath renderer, core controller, and all four adapters ([#373](https://github.com/ChestnutLabs/gcode-preview/pull/373)). `'hold'` keeps the progress signal (drive a `%` bar from `parse-progress`) but reveals **only the final, correctly-coloured, policy-quality build** — replacing the neutral-then-recolour "double render" on streamed files with a single clean reveal; `'off'` suppresses the built-in preview for a consumer-driven loading treatment; `'lines'` (the default) preserves today's streaming line preview. Orthogonal to `quality`/`qualityMode` — the revealed representation is always the policy-correct one, never a silent large-file lines fallback. Prior: **v0.14.0** — a **`qualityMode`** fidelity policy (Full / Adaptive / Fast) across the toolpath renderer, core controller, and all four adapters ([DD-023](design/DD-023-capability-aware-render-budget.md) §4 D6, Phase B) — `'full'` renders the COMPLETE representation (no every-Nth decimation, full-radial continuous tubes, no budget→lines fallback); `'adaptive'` (default) is the capability-aware auto path; `'fast'` is flat lines. Plus a **continuity correction: tubes are never segment-decimated** — `autoDecimation`'s every-Nth drop was chopping tube geometry into disconnected stubs (the RR-006 continuity break via the decimation lever the v0.12.0 fix didn't cover); tube memory is now bounded ONLY by continuity-preserving radial reduction, degrading to continuous lines when even a 3-sided tube won't fit — never chopped. The honest order is full-radial tubes → lower-radial tubes → continuous lines. (Classifier-driven auto budget + the too-heavy signal land later.) Prior: **v0.13.0** (14 lockstep pkgs), a farm-workload batch: render the colour/structure a source model actually carries, stop over-degrading normal large plates, and lay the capability-aware groundwork. **Toolpath:** the tube memory budget now counts only **extrude** segments (not travel/wipe), so a heavy-travel plate (800+ parts) renders as continuous tubes instead of dropping to lines; a new **`filament` colour mode** renders a toolpath in the file's OWN filament colours (resolved from parse metadata before the first build — no neutral-then-recolour flash on raw `.gcode`). **Source model** ([`gcode-model-renderer`](../packages/gcode-model-renderer)): **multi-plate structure** ([DD-025](design/DD-025-multi-plate-model-structure.md) Phase A — `ModelScene.plates` + placement-level `plateIds` + `capabilities.plates`, declared-only), **Bambu/Orca per-object extruder colours** (a `.3mf` coloured via the project convention renders in colour, not neutral), and **staged loading progress** ([DD-024](design/DD-024-staged-loading-progress.md) Phase A — typed, consumer-neutral, generation-scoped, never a faked %). **Capability groundwork** ([DD-023](design/DD-023-capability-aware-render-budget.md) Phase A): a shared fail-safe WebGL hw/sw classifier + `QualityPolicy`/`CapabilityHint` types (no behaviour change yet; capability-aware budgets + `qualityMode` land later). Prior: **v0.12.0** — fixes the two regressions surfaced against v0.11.0 and promotes the tube memory bound to an honest control. **Tube rendering** ([RR-006](research/RR-006-tube-mesh-memory-and-large-file-budget.md) correction) now bounds memory by **coarsening the cross-section** (fewer radial sides) at full segment continuity — replacing the v0.10.0 drop-every-Nth-segment budget that shredded tubes into spiky capped stubs; new public `tubeByteBudget` option, `tubeSegmentBudget` deprecated, lines fallback only when even a 3-sided tube can't fit. **Model estimate** now counts **unique** master triangles, not baked-per-placement, so a full-sheet instanced `.3mf` plate (~40 reused copies) parses/renders at default limits instead of falsely rejecting as "too large" (instance bomb still guarded by `maxInstances`). Prior: **v0.11.0** — **instance-aware source-model rendering** ([DD-022](design/DD-022-model-instancing-and-lod.md), Phases 0–1) — a full-sheet `.3mf` that reuses a master mesh via production-extension components / repeated build items now renders each master **once** via GPU instancing (three `InstancedMesh`) instead of baking a copy per placement, so memory scales with unique geometry not copy count (a ~40× instanced plate that used to exceed the triangle limit now renders); plus a **sub-second byte-estimate fast-reject** for genuinely oversize / instance-bomb files, and `instancedCount` + `decimationApplied` disclosure on the model `ready`/still result. **v0.10.0** added a **tube-mesh memory budget** so large forced-`tubes` renders (≈1.6 M+ segments) no longer OOM a 2 GB render worker — tubes decimate to a `TUBE_SEGMENT_BUDGET`, disclosed via `decimationApplied` (also on `RenderStillResult`), layer boundaries preserved ([RR-006](research/RR-006-tube-mesh-memory-and-large-file-budget.md)); plus a fix so `frameContent:'object'` frames the printed object on AnycubicSlicerNext and every object-labeling file (`objectBounds` is refreshed after dialect annotation). **v0.9.0** shipped the **interactive source-model viewer** `createModelViewer` in `@chestnutlabs/gcode-model-renderer` — the live orbit/zoom/pan analogue of `renderModelStill` for an STL or 3MF, over a shared interactive "stage" extracted in `gcode-renderer-three`, with an open-`kind` model-source loader registry (STL/3MF now, OBJ/STEP/PLY later without an API change), capability-honest color pass-through, and a `renderer-unsupported` fallback ([DD-021](design/DD-021-interactive-model-viewer.md)). v0.8.1 added production Bambu/Orca 3MF `paint_color` multicolor decode ([RR-005](research/RR-005-3mf-paint-color-facet-format.md)) so a designer's painted model renders in its true colors without slicing, plus a filament-slot dedup fix. v0.7.0 shipped the presentation package `@chestnutlabs/gcode-model-renderer` (headless `renderModelStill`, STL + 3MF multi-object/material, [DD-018](design/DD-018-model-renderer.md)), the 3MF Production-Extension (`p:path`) reader, and a toolpath-renderer batch — slice metadata on `ready`, structured multi-plate metadata, independent build-volume cage, frame-to-content, interaction-aware render quality ([DD-020](design/DD-020-interaction-aware-quality.md)), and a `renderStill` background option. v0.5.x added camera preset-views + serializable `CameraState`, zoom-to-cursor, keyboard-a11y, `capabilities`/`warnings` on `ready`, and the Vue/Svelte adapter mount-prop fixes (epics #279/#296/#306/DD-021). DD-017 RS274NGC parametric programs proposed, unbuilt)
 
 | Epic | Status | Gate |
 |---|---|---|
@@ -67,7 +67,7 @@ golden/native fixtures + manifest with CI validation, boundary lint, license CI
 consumer smoke harnesses, plus the five framework adapters (`gcode-preview-core`/`-vue`/`-react`/
 `-svelte`/`-element`) and the presentation renderer (`gcode-model-renderer`). CI (`build`) is a
 required check on `main`/`dev`. **All fourteen `@chestnutlabs/*` packages are published to npm at
-`v0.19.0`** (lockstep, npm provenance); `main` is the release branch, publishing from tagged GitHub
+`v0.20.0`** (lockstep, npm provenance); `main` is the release branch, publishing from tagged GitHub
 Releases (`v0.1.0` E7/DD-008, `v0.2.0` E9/DD-009, `v0.3.0` E8/#188, `v0.4.0` #189 non-extrusion,
 `v0.5.x` hardening #279, `v0.6.0`/`v0.7.0` ModelRenderer + toolpath batch #296/#306, `v0.8.1` 3MF
 `paint_color` multicolor decode, `v0.9.0` interactive `createModelViewer` #296/DD-021, `v0.10.0`
@@ -80,5 +80,10 @@ programming layer — parameters/expressions/O-word control flow/subroutines DD-
 renderer/viewer interop — interactive `capture()`, per-plate render scope, non-rectangular build beds
 DD-030; `v0.19.0` `setFeatureRoleVisible` per-feature-role hide/show (hide brim/skirt) + the
 public-product/docs pass — visual Pages homepage + feature gallery + scrub/build-up animations,
-Visual Feature Coverage Matrix, and the enforced per-release Product/Docs/Visual review gate).
+Visual Feature Coverage Matrix, and the enforced per-release Product/Docs/Visual review gate;
+`v0.20.0` source-model viewing as a first-class declarative half of the SDK — `createModelPreviewController`
++ `<ModelViewer>` on each framework's `/model` subpath (`<gcode-model-viewer>` for the Web Component),
+the toolpath dark-capability closure (`getRenderStats`/`pickSegment`/`isColorModeAvailable`/declarative
+`hiddenFeatureRoles`/handle `capture`) + `capture({ includeBuildVolume })`, the Feature Lab demo, and
+two-tier framework examples DD-031).
 Changesets accumulate on `dev` for the next release.
diff --git a/docs/manual/index.md b/docs/manual/index.md
index df3ec600..73107ad0 100644
--- a/docs/manual/index.md
+++ b/docs/manual/index.md
@@ -107,6 +107,6 @@ viewer is reachable without switching APIs.
   [Parametric programs (RS274NGC)](concept-parametric-programs.md).
 - **API reference** — pick a package in the sidebar (`toolpath-core`, `gcode-parser`, …).
 
-> **Status:** published — all fourteen `@chestnutlabs/*` packages are on npm (latest `v0.19.0`,
+> **Status:** published — all fourteen `@chestnutlabs/*` packages are on npm (latest `v0.20.0`,
 > lockstep-versioned with provenance). Governance and epic status live in the
 > [repository docs](https://github.com/ChestnutLabs/gcode-preview/tree/dev/docs).
diff --git a/package-lock.json b/package-lock.json
index 0b076d7d..b7fca061 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7389,11 +7389,11 @@
     },
     "packages/gcode-bgcode": {
       "name": "@chestnutlabs/gcode-bgcode",
-      "version": "0.19.0",
+      "version": "0.20.0",
       "license": "MIT",
       "dependencies": {
-        "@chestnutlabs/gcode-containers": "0.19.0",
-        "@chestnutlabs/toolpath-core": "0.19.0"
+        "@chestnutlabs/gcode-containers": "0.20.0",
+        "@chestnutlabs/toolpath-core": "0.20.0"
       },
       "engines": {
         "node": ">=22"
@@ -7401,10 +7401,10 @@
     },
     "packages/gcode-colors": {
       "name": "@chestnutlabs/gcode-colors",
-      "version": "0.19.0",
+      "version": "0.20.0",
       "license": "MIT",
       "dependencies": {
-        "@chestnutlabs/toolpath-core": "0.19.0"
+        "@chestnutlabs/toolpath-core": "0.20.0"
       },
       "engines": {
         "node": ">=22"
@@ -7412,10 +7412,10 @@
     },
     "packages/gcode-containers": {
       "name": "@chestnutlabs/gcode-containers",
-      "version": "0.19.0",
+      "version": "0.20.0",
       "license": "MIT",
       "dependencies": {
-        "@chestnutlabs/toolpath-core": "0.19.0"
+        "@chestnutlabs/toolpath-core": "0.20.0"
       },
       "engines": {
         "node": ">=22"
@@ -7423,10 +7423,10 @@
     },
     "packages/gcode-dialects": {
       "name": "@chestnutlabs/gcode-dialects",
-      "version": "0.19.0",
+      "version": "0.20.0",
       "license": "MIT",
       "dependencies": {
-        "@chestnutlabs/toolpath-core": "0.19.0"
+        "@chestnutlabs/toolpath-core": "0.20.0"
       },
       "engines": {
         "node": ">=22"
@@ -7434,12 +7434,12 @@
     },
     "packages/gcode-model-renderer": {
       "name": "@chestnutlabs/gcode-model-renderer",
-      "version": "0.19.0",
+      "version": "0.20.0",
       "license": "MIT",
       "dependencies": {
-        "@chestnutlabs/gcode-containers": "0.19.0",
-        "@chestnutlabs/gcode-renderer-three": "0.19.0",
-        "@chestnutlabs/toolpath-core": "0.19.0"
+        "@chestnutlabs/gcode-containers": "0.20.0",
+        "@chestnutlabs/gcode-renderer-three": "0.20.0",
+        "@chestnutlabs/toolpath-core": "0.20.0"
       },
       "devDependencies": {
         "@types/three": "0.178.0"
@@ -7453,13 +7453,13 @@
     },
     "packages/gcode-parser": {
       "name": "@chestnutlabs/gcode-parser",
-      "version": "0.19.0",
+      "version": "0.20.0",
       "license": "MIT",
       "dependencies": {
-        "@chestnutlabs/gcode-bgcode": "0.19.0",
-        "@chestnutlabs/gcode-containers": "0.19.0",
-        "@chestnutlabs/gcode-dialects": "0.19.0",
-        "@chestnutlabs/toolpath-core": "0.19.0"
+        "@chestnutlabs/gcode-bgcode": "0.20.0",
+        "@chestnutlabs/gcode-containers": "0.20.0",
+        "@chestnutlabs/gcode-dialects": "0.20.0",
+        "@chestnutlabs/toolpath-core": "0.20.0"
       },
       "engines": {
         "node": ">=22"
@@ -7467,13 +7467,13 @@
     },
     "packages/gcode-preview-core": {
       "name": "@chestnutlabs/gcode-preview-core",
-      "version": "0.19.0",
+      "version": "0.20.0",
       "license": "MIT",
       "dependencies": {
-        "@chestnutlabs/gcode-parser": "0.19.0",
-        "@chestnutlabs/gcode-renderer-2d": "0.19.0",
-        "@chestnutlabs/gcode-renderer-three": "0.19.0",
-        "@chestnutlabs/toolpath-core": "0.19.0"
+        "@chestnutlabs/gcode-parser": "0.20.0",
+        "@chestnutlabs/gcode-renderer-2d": "0.20.0",
+        "@chestnutlabs/gcode-renderer-three": "0.20.0",
+        "@chestnutlabs/toolpath-core": "0.20.0"
       },
       "engines": {
         "node": ">=22"
@@ -7481,13 +7481,14 @@
     },
     "packages/gcode-preview-element": {
       "name": "@chestnutlabs/gcode-preview-element",
-      "version": "0.19.0",
+      "version": "0.20.0",
       "license": "MIT",
       "dependencies": {
-        "@chestnutlabs/gcode-parser": "0.19.0",
-        "@chestnutlabs/gcode-preview-core": "0.19.0",
-        "@chestnutlabs/gcode-renderer-three": "0.19.0",
-        "@chestnutlabs/toolpath-core": "0.19.0"
+        "@chestnutlabs/gcode-model-renderer": "0.20.0",
+        "@chestnutlabs/gcode-parser": "0.20.0",
+        "@chestnutlabs/gcode-preview-core": "0.20.0",
+        "@chestnutlabs/gcode-renderer-three": "0.20.0",
+        "@chestnutlabs/toolpath-core": "0.20.0"
       },
       "engines": {
         "node": ">=22"
@@ -7495,13 +7496,14 @@
     },
     "packages/gcode-preview-react": {
       "name": "@chestnutlabs/gcode-preview-react",
-      "version": "0.19.0",
+      "version": "0.20.0",
       "license": "MIT",
       "dependencies": {
-        "@chestnutlabs/gcode-parser": "0.19.0",
-        "@chestnutlabs/gcode-preview-core": "0.19.0",
-        "@chestnutlabs/gcode-renderer-three": "0.19.0",
-        "@chestnutlabs/toolpath-core": "0.19.0"
+        "@chestnutlabs/gcode-model-renderer": "0.20.0",
+        "@chestnutlabs/gcode-parser": "0.20.0",
+        "@chestnutlabs/gcode-preview-core": "0.20.0",
+        "@chestnutlabs/gcode-renderer-three": "0.20.0",
+        "@chestnutlabs/toolpath-core": "0.20.0"
       },
       "devDependencies": {
         "@types/react": "^18.3.0",
@@ -7517,13 +7519,14 @@
     },
     "packages/gcode-preview-svelte": {
       "name": "@chestnutlabs/gcode-preview-svelte",
-      "version": "0.19.0",
+      "version": "0.20.0",
       "license": "MIT",
       "dependencies": {
-        "@chestnutlabs/gcode-parser": "0.19.0",
-        "@chestnutlabs/gcode-preview-core": "0.19.0",
-        "@chestnutlabs/gcode-renderer-three": "0.19.0",
-        "@chestnutlabs/toolpath-core": "0.19.0"
+        "@chestnutlabs/gcode-model-renderer": "0.20.0",
+        "@chestnutlabs/gcode-parser": "0.20.0",
+        "@chestnutlabs/gcode-preview-core": "0.20.0",
+        "@chestnutlabs/gcode-renderer-three": "0.20.0",
+        "@chestnutlabs/toolpath-core": "0.20.0"
       },
       "devDependencies": {
         "svelte": "^4.2.0"
@@ -7537,13 +7540,14 @@
     },
     "packages/gcode-preview-vue": {
       "name": "@chestnutlabs/gcode-preview-vue",
-      "version": "0.19.0",
+      "version": "0.20.0",
       "license": "MIT",
       "dependencies": {
-        "@chestnutlabs/gcode-parser": "0.19.0",
-        "@chestnutlabs/gcode-preview-core": "0.19.0",
-        "@chestnutlabs/gcode-renderer-three": "0.19.0",
-        "@chestnutlabs/toolpath-core": "0.19.0"
+        "@chestnutlabs/gcode-model-renderer": "0.20.0",
+        "@chestnutlabs/gcode-parser": "0.20.0",
+        "@chestnutlabs/gcode-preview-core": "0.20.0",
+        "@chestnutlabs/gcode-renderer-three": "0.20.0",
+        "@chestnutlabs/toolpath-core": "0.20.0"
       },
       "devDependencies": {
         "vue": "^3.4.0"
@@ -7557,11 +7561,11 @@
     },
     "packages/gcode-renderer-2d": {
       "name": "@chestnutlabs/gcode-renderer-2d",
-      "version": "0.19.0",
+      "version": "0.20.0",
       "license": "MIT",
       "dependencies": {
-        "@chestnutlabs/gcode-colors": "0.19.0",
-        "@chestnutlabs/toolpath-core": "0.19.0"
+        "@chestnutlabs/gcode-colors": "0.20.0",
+        "@chestnutlabs/toolpath-core": "0.20.0"
       },
       "engines": {
         "node": ">=22"
@@ -7569,11 +7573,11 @@
     },
     "packages/gcode-renderer-three": {
       "name": "@chestnutlabs/gcode-renderer-three",
-      "version": "0.19.0",
+      "version": "0.20.0",
       "license": "MIT",
       "dependencies": {
-        "@chestnutlabs/gcode-colors": "0.19.0",
-        "@chestnutlabs/toolpath-core": "0.19.0"
+        "@chestnutlabs/gcode-colors": "0.20.0",
+        "@chestnutlabs/toolpath-core": "0.20.0"
       },
       "devDependencies": {
         "@types/three": "0.178.0"
@@ -7587,7 +7591,7 @@
     },
     "packages/toolpath-core": {
       "name": "@chestnutlabs/toolpath-core",
-      "version": "0.19.0",
+      "version": "0.20.0",
       "license": "MIT",
       "engines": {
         "node": ">=22"
diff --git a/packages/gcode-bgcode/CHANGELOG.md b/packages/gcode-bgcode/CHANGELOG.md
index 1b52b049..05afa4d2 100644
--- a/packages/gcode-bgcode/CHANGELOG.md
+++ b/packages/gcode-bgcode/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @chestnutlabs/gcode-bgcode
 
+## 0.20.0
+
+### Patch Changes
+
+- Updated dependencies []:
+  - @chestnutlabs/gcode-containers@0.20.0
+  - @chestnutlabs/toolpath-core@0.20.0
+
 ## 0.19.0
 
 ### Patch Changes
diff --git a/packages/gcode-bgcode/package.json b/packages/gcode-bgcode/package.json
index f70e47d9..ee673526 100644
--- a/packages/gcode-bgcode/package.json
+++ b/packages/gcode-bgcode/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@chestnutlabs/gcode-bgcode",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "description": "Binary G-code (.bgcode) decode adapter for the Chestnut Labs G-code toolpath stack (DD-011): a license-clean, in-memory block walker that decodes Prusa .bgcode to plain G-code for the existing parser/dialect/renderer pipeline. Decode-only.",
   "keywords": [
     "gcode",
@@ -47,7 +47,7 @@
     "test": "vitest run"
   },
   "dependencies": {
-    "@chestnutlabs/toolpath-core": "0.19.0",
-    "@chestnutlabs/gcode-containers": "0.19.0"
+    "@chestnutlabs/toolpath-core": "0.20.0",
+    "@chestnutlabs/gcode-containers": "0.20.0"
   }
 }
diff --git a/packages/gcode-colors/CHANGELOG.md b/packages/gcode-colors/CHANGELOG.md
index 00030f07..60aa8c78 100644
--- a/packages/gcode-colors/CHANGELOG.md
+++ b/packages/gcode-colors/CHANGELOG.md
@@ -1,5 +1,12 @@
 # @chestnutlabs/gcode-colors
 
+## 0.20.0
+
+### Patch Changes
+
+- Updated dependencies []:
+  - @chestnutlabs/toolpath-core@0.20.0
+
 ## 0.19.0
 
 ### Patch Changes
diff --git a/packages/gcode-colors/package.json b/packages/gcode-colors/package.json
index 7b9ad81c..6f349fc5 100644
--- a/packages/gcode-colors/package.json
+++ b/packages/gcode-colors/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@chestnutlabs/gcode-colors",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "description": "Renderer-agnostic per-segment color model for the Chestnut Labs G-code toolpath stack (DD-014 D3): the ColorMode union and honest, capability-gated segment coloring over ToolpathIR channels, shared by the 3D and 2D renderers.",
   "keywords": [
     "gcode",
@@ -47,6 +47,6 @@
     "test": "vitest run"
   },
   "dependencies": {
-    "@chestnutlabs/toolpath-core": "0.19.0"
+    "@chestnutlabs/toolpath-core": "0.20.0"
   }
 }
diff --git a/packages/gcode-containers/CHANGELOG.md b/packages/gcode-containers/CHANGELOG.md
index e09799dd..6ce5c0ad 100644
--- a/packages/gcode-containers/CHANGELOG.md
+++ b/packages/gcode-containers/CHANGELOG.md
@@ -1,5 +1,12 @@
 # @chestnutlabs/gcode-containers
 
+## 0.20.0
+
+### Patch Changes
+
+- Updated dependencies []:
+  - @chestnutlabs/toolpath-core@0.20.0
+
 ## 0.19.0
 
 ### Patch Changes
diff --git a/packages/gcode-containers/package.json b/packages/gcode-containers/package.json
index 354e24f3..020d7a6e 100644
--- a/packages/gcode-containers/package.json
+++ b/packages/gcode-containers/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@chestnutlabs/gcode-containers",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "description": "Safe, bounded, in-memory container extraction for sliced G-code (.gcode.3mf) — DD-005 §4.4/§7. Never writes files, never fetches, zero dependencies.",
   "keywords": [
     "gcode",
@@ -42,6 +42,6 @@
     "test": "vitest run"
   },
   "dependencies": {
-    "@chestnutlabs/toolpath-core": "0.19.0"
+    "@chestnutlabs/toolpath-core": "0.20.0"
   }
 }
diff --git a/packages/gcode-dialects/CHANGELOG.md b/packages/gcode-dialects/CHANGELOG.md
index 52da7064..bf7af41b 100644
--- a/packages/gcode-dialects/CHANGELOG.md
+++ b/packages/gcode-dialects/CHANGELOG.md
@@ -1,5 +1,12 @@
 # @chestnutlabs/gcode-dialects
 
+## 0.20.0
+
+### Patch Changes
+
+- Updated dependencies []:
+  - @chestnutlabs/toolpath-core@0.20.0
+
 ## 0.19.0
 
 ### Patch Changes
diff --git a/packages/gcode-dialects/package.json b/packages/gcode-dialects/package.json
index 76c4ca94..c8973b3d 100644
--- a/packages/gcode-dialects/package.json
+++ b/packages/gcode-dialects/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@chestnutlabs/gcode-dialects",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "description": "Slicer/firmware dialect adapters for ToolpathIR annotation (DD-005). Adapters annotate metadata and optional channels — they can never alter geometry.",
   "keywords": [
     "gcode",
@@ -45,6 +45,6 @@
     "test": "vitest run"
   },
   "dependencies": {
-    "@chestnutlabs/toolpath-core": "0.19.0"
+    "@chestnutlabs/toolpath-core": "0.20.0"
   }
 }
diff --git a/packages/gcode-model-renderer/CHANGELOG.md b/packages/gcode-model-renderer/CHANGELOG.md
index 11a68be4..99a8a015 100644
--- a/packages/gcode-model-renderer/CHANGELOG.md
+++ b/packages/gcode-model-renderer/CHANGELOG.md
@@ -1,5 +1,46 @@
 # @chestnutlabs/gcode-model-renderer
 
+## 0.20.0
+
+### Minor Changes
+
+- [#427](https://github.com/ChestnutLabs/gcode-preview/pull/427) [`b25ddb6`](https://github.com/ChestnutLabs/gcode-preview/commit/b25ddb68fdf4a5b12689c67f411e7d8c316086bb) Thanks [@sobechestnut-dev](https://github.com/sobechestnut-dev)! - Make interactive **source-model viewing** (STL / 3MF) a first-class, declarative half of the SDK —
+  the Prepare side alongside the toolpath Preview side — so consumers no longer have to drop to the
+  imperative `createModelViewer` engine to show a model in a framework (DD-031).
+
+  **New framework-neutral controller** (`@chestnutlabs/gcode-model-renderer`):
+  - `createModelPreviewController(options)` — the Prepare-side analogue of `gcode-preview-core`'s toolpath
+    controller. It wraps the existing `createModelViewer` engine unchanged and adds what a framework
+    binding needs: canvas-deferred construction with `bindCanvas` (rebuilding on a canvas swap and
+    replaying the last source), a reactive `getState()`/`onStateChange()` snapshot derived from the
+    engine's events (`ModelPreviewState`: `loading`/`ready`/`rendererSupported`/`objectCount`/`materials`/
+    `instancedCount`/`decimationApplied`/`bounds`/`plates`/`hasPlates`/`cameraState`/`progress`/`error`),
+    and an op queue for calls made before the canvas binds. `ModelPreviewControls` exposes `setSource`,
+    `setView`, get/`setCameraState`, `setBackground`, `setInteractionQuality`, `setRenderScope`, `frame`,
+    `resize`, and `capture`.
+  - A portable model behavioral suite ships via the `@chestnutlabs/gcode-model-renderer/testing` subpath
+    (`runModelBehavioralSuite`) with controls/state completeness parity guards.
+
+  **New `/model` adapter subpath on every framework** — thin shells over the one controller, mirroring
+  each framework's toolpath idiom:
+  - `@chestnutlabs/gcode-preview-react/model` — `useModelViewer` hook + `<ModelViewer>` component.
+  - `@chestnutlabs/gcode-preview-vue/model` — `useModelViewer` composable + `<ModelViewer>` component.
+  - `@chestnutlabs/gcode-preview-svelte/model` — `createModelViewer` store/action + the raw
+    `@chestnutlabs/gcode-preview-svelte/model/ModelViewer.svelte` component.
+  - `@chestnutlabs/gcode-preview-element/model` (+ `/model/define`) — the `<gcode-model-viewer>` custom
+    element (tag chosen to avoid the reserved `<model-viewer>`).
+
+  All additive — the toolpath surface is unchanged, and toolpath-only consumers don't pull the model
+  renderer (it lives behind the opt-in `/model` subpath). Every adapter passes the portable model
+  behavioral suite; each package gains `@chestnutlabs/gcode-model-renderer` as a dependency.
+
+### Patch Changes
+
+- Updated dependencies [[`718d1bd`](https://github.com/ChestnutLabs/gcode-preview/commit/718d1bde45856b58c37580d629da6d177f9f2004)]:
+  - @chestnutlabs/gcode-renderer-three@0.20.0
+  - @chestnutlabs/gcode-containers@0.20.0
+  - @chestnutlabs/toolpath-core@0.20.0
+
 ## 0.19.0
 
 ### Patch Changes
diff --git a/packages/gcode-model-renderer/package.json b/packages/gcode-model-renderer/package.json
index c30e750e..b0aa9be5 100644
--- a/packages/gcode-model-renderer/package.json
+++ b/packages/gcode-model-renderer/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@chestnutlabs/gcode-model-renderer",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "description": "Three.js presentation renderer for source models (STL/3MF) — clean thumbnails/cards, distinct from toolpath inspection (DD-018).",
   "keywords": [
     "3d-printing",
@@ -55,9 +55,9 @@
     "test": "vitest run"
   },
   "dependencies": {
-    "@chestnutlabs/gcode-containers": "0.19.0",
-    "@chestnutlabs/gcode-renderer-three": "0.19.0",
-    "@chestnutlabs/toolpath-core": "0.19.0"
+    "@chestnutlabs/gcode-containers": "0.20.0",
+    "@chestnutlabs/gcode-renderer-three": "0.20.0",
+    "@chestnutlabs/toolpath-core": "0.20.0"
   },
   "devDependencies": {
     "@types/three": "0.178.0"
diff --git a/packages/gcode-parser/CHANGELOG.md b/packages/gcode-parser/CHANGELOG.md
index 8ee8372f..c331189b 100644
--- a/packages/gcode-parser/CHANGELOG.md
+++ b/packages/gcode-parser/CHANGELOG.md
@@ -1,5 +1,15 @@
 # @chestnutlabs/gcode-parser
 
+## 0.20.0
+
+### Patch Changes
+
+- Updated dependencies []:
+  - @chestnutlabs/gcode-bgcode@0.20.0
+  - @chestnutlabs/gcode-containers@0.20.0
+  - @chestnutlabs/gcode-dialects@0.20.0
+  - @chestnutlabs/toolpath-core@0.20.0
+
 ## 0.19.0
 
 ### Patch Changes
diff --git a/packages/gcode-parser/package.json b/packages/gcode-parser/package.json
index 43b09e3e..2bda8c7d 100644
--- a/packages/gcode-parser/package.json
+++ b/packages/gcode-parser/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@chestnutlabs/gcode-parser",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "description": "Worker-safe G-code parse core producing ToolpathIR (DD-003).",
   "keywords": [
     "gcode",
@@ -49,9 +49,9 @@
     "test": "vitest run"
   },
   "dependencies": {
-    "@chestnutlabs/toolpath-core": "0.19.0",
-    "@chestnutlabs/gcode-dialects": "0.19.0",
-    "@chestnutlabs/gcode-containers": "0.19.0",
-    "@chestnutlabs/gcode-bgcode": "0.19.0"
+    "@chestnutlabs/toolpath-core": "0.20.0",
+    "@chestnutlabs/gcode-dialects": "0.20.0",
+    "@chestnutlabs/gcode-containers": "0.20.0",
+    "@chestnutlabs/gcode-bgcode": "0.20.0"
   }
 }
diff --git a/packages/gcode-preview-core/CHANGELOG.md b/packages/gcode-preview-core/CHANGELOG.md
index d9cc6702..259237dd 100644
--- a/packages/gcode-preview-core/CHANGELOG.md
+++ b/packages/gcode-preview-core/CHANGELOG.md
@@ -1,5 +1,45 @@
 # @chestnutlabs/gcode-preview-core
 
+## 0.20.0
+
+### Minor Changes
+
+- [#427](https://github.com/ChestnutLabs/gcode-preview/pull/427) [`8810ba4`](https://github.com/ChestnutLabs/gcode-preview/commit/8810ba43f1641362e1705e713a8afe93659f740a) Thanks [@sobechestnut-dev](https://github.com/sobechestnut-dev)! - Close the dark-capability gaps so no shipped capability is reachable only through the
+  `raw.renderer()` escape hatch, with full parity across all four framework adapters (DD-031).
+
+  **New on the public controller (`GcodePreviewControls`), so it flows to every adapter's `controls`:**
+  - `getRenderStats()` — the DD-027 render-diagnostics snapshot (backend, GPU, geometry mode, build
+    parallelism, timings), previously reachable only on the Three renderer. Returns `null` on the 2D
+    renderer (which produces no GPU/geometry diagnostics — never a fabricated stats object).
+  - `pickSegment(ndcX, ndcY, threshold?)` — source-mapping / segment picking, previously renderer-only.
+  - `isColorModeAvailable(mode)` — the honest per-file color-mode capability gate.
+
+  **New capability-aware state (`GcodePreviewState`):** `availableColorModes`, `hasRetractions`,
+  `hasColorChanges` — refreshed after each parse, so a UI can offer and _explain_ controls instead of
+  guessing (e.g. gray out feature coloring on a file with no feature roles, with a reason).
+
+  **Adapter parity:**
+  - `hiddenFeatureRoles` is now a declarative prop (Vue/React/Svelte) and a `hidden-feature-roles`
+    attribute (Web Component) — the declarative form of `setFeatureRoleVisible` (hide Skirt/Brim to
+    declutter a part). Gate it on `capabilities.featureRoles`.
+  - `capture()` is now a top-level method on the Vue/React/Svelte handles too, matching the Web
+    Component's `element.capture()`.
+  - Web Component: `renderer`/`adjacentLayers` gain property accessors; the package now also re-exports
+    `RendererMode` and `PreviewRenderer`.
+
+  All additive — existing code keeps working unchanged; the 2D renderer honors the widened contract as
+  documented no-ops / honest `null`. The portable behavioral suite is extended (layer-range, color-mode
+  gating, diagnostics + picking reachability) and gains a controls-completeness parity guard so a
+  capability can no longer ship in core and silently vanish from an adapter.
+
+### Patch Changes
+
+- Updated dependencies [[`718d1bd`](https://github.com/ChestnutLabs/gcode-preview/commit/718d1bde45856b58c37580d629da6d177f9f2004)]:
+  - @chestnutlabs/gcode-renderer-three@0.20.0
+  - @chestnutlabs/gcode-parser@0.20.0
+  - @chestnutlabs/gcode-renderer-2d@0.20.0
+  - @chestnutlabs/toolpath-core@0.20.0
+
 ## 0.19.0
 
 ### Minor Changes
diff --git a/packages/gcode-preview-core/package.json b/packages/gcode-preview-core/package.json
index a11e7c62..25d148b5 100644
--- a/packages/gcode-preview-core/package.json
+++ b/packages/gcode-preview-core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@chestnutlabs/gcode-preview-core",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "description": "Framework-neutral preview controller for the Chestnut Labs G-code viewer (DD-007 §4.6): the shared engine glue, state model, and TypeScript contracts beneath the Vue/React/Svelte adapters.",
   "keywords": [
     "gcode",
@@ -52,9 +52,9 @@
     "test": "vitest run"
   },
   "dependencies": {
-    "@chestnutlabs/gcode-parser": "0.19.0",
-    "@chestnutlabs/gcode-renderer-2d": "0.19.0",
-    "@chestnutlabs/gcode-renderer-three": "0.19.0",
-    "@chestnutlabs/toolpath-core": "0.19.0"
+    "@chestnutlabs/gcode-parser": "0.20.0",
+    "@chestnutlabs/gcode-renderer-2d": "0.20.0",
+    "@chestnutlabs/gcode-renderer-three": "0.20.0",
+    "@chestnutlabs/toolpath-core": "0.20.0"
   }
 }
diff --git a/packages/gcode-preview-element/CHANGELOG.md b/packages/gcode-preview-element/CHANGELOG.md
index a8bc573d..33b01219 100644
--- a/packages/gcode-preview-element/CHANGELOG.md
+++ b/packages/gcode-preview-element/CHANGELOG.md
@@ -1,5 +1,76 @@
 # @chestnutlabs/gcode-preview-element
 
+## 0.20.0
+
+### Minor Changes
+
+- [#427](https://github.com/ChestnutLabs/gcode-preview/pull/427) [`8810ba4`](https://github.com/ChestnutLabs/gcode-preview/commit/8810ba43f1641362e1705e713a8afe93659f740a) Thanks [@sobechestnut-dev](https://github.com/sobechestnut-dev)! - Close the dark-capability gaps so no shipped capability is reachable only through the
+  `raw.renderer()` escape hatch, with full parity across all four framework adapters (DD-031).
+
+  **New on the public controller (`GcodePreviewControls`), so it flows to every adapter's `controls`:**
+  - `getRenderStats()` — the DD-027 render-diagnostics snapshot (backend, GPU, geometry mode, build
+    parallelism, timings), previously reachable only on the Three renderer. Returns `null` on the 2D
+    renderer (which produces no GPU/geometry diagnostics — never a fabricated stats object).
+  - `pickSegment(ndcX, ndcY, threshold?)` — source-mapping / segment picking, previously renderer-only.
+  - `isColorModeAvailable(mode)` — the honest per-file color-mode capability gate.
+
+  **New capability-aware state (`GcodePreviewState`):** `availableColorModes`, `hasRetractions`,
+  `hasColorChanges` — refreshed after each parse, so a UI can offer and _explain_ controls instead of
+  guessing (e.g. gray out feature coloring on a file with no feature roles, with a reason).
+
+  **Adapter parity:**
+  - `hiddenFeatureRoles` is now a declarative prop (Vue/React/Svelte) and a `hidden-feature-roles`
+    attribute (Web Component) — the declarative form of `setFeatureRoleVisible` (hide Skirt/Brim to
+    declutter a part). Gate it on `capabilities.featureRoles`.
+  - `capture()` is now a top-level method on the Vue/React/Svelte handles too, matching the Web
+    Component's `element.capture()`.
+  - Web Component: `renderer`/`adjacentLayers` gain property accessors; the package now also re-exports
+    `RendererMode` and `PreviewRenderer`.
+
+  All additive — existing code keeps working unchanged; the 2D renderer honors the widened contract as
+  documented no-ops / honest `null`. The portable behavioral suite is extended (layer-range, color-mode
+  gating, diagnostics + picking reachability) and gains a controls-completeness parity guard so a
+  capability can no longer ship in core and silently vanish from an adapter.
+
+- [#427](https://github.com/ChestnutLabs/gcode-preview/pull/427) [`b25ddb6`](https://github.com/ChestnutLabs/gcode-preview/commit/b25ddb68fdf4a5b12689c67f411e7d8c316086bb) Thanks [@sobechestnut-dev](https://github.com/sobechestnut-dev)! - Make interactive **source-model viewing** (STL / 3MF) a first-class, declarative half of the SDK —
+  the Prepare side alongside the toolpath Preview side — so consumers no longer have to drop to the
+  imperative `createModelViewer` engine to show a model in a framework (DD-031).
+
+  **New framework-neutral controller** (`@chestnutlabs/gcode-model-renderer`):
+  - `createModelPreviewController(options)` — the Prepare-side analogue of `gcode-preview-core`'s toolpath
+    controller. It wraps the existing `createModelViewer` engine unchanged and adds what a framework
+    binding needs: canvas-deferred construction with `bindCanvas` (rebuilding on a canvas swap and
+    replaying the last source), a reactive `getState()`/`onStateChange()` snapshot derived from the
+    engine's events (`ModelPreviewState`: `loading`/`ready`/`rendererSupported`/`objectCount`/`materials`/
+    `instancedCount`/`decimationApplied`/`bounds`/`plates`/`hasPlates`/`cameraState`/`progress`/`error`),
+    and an op queue for calls made before the canvas binds. `ModelPreviewControls` exposes `setSource`,
+    `setView`, get/`setCameraState`, `setBackground`, `setInteractionQuality`, `setRenderScope`, `frame`,
+    `resize`, and `capture`.
+  - A portable model behavioral suite ships via the `@chestnutlabs/gcode-model-renderer/testing` subpath
+    (`runModelBehavioralSuite`) with controls/state completeness parity guards.
+
+  **New `/model` adapter subpath on every framework** — thin shells over the one controller, mirroring
+  each framework's toolpath idiom:
+  - `@chestnutlabs/gcode-preview-react/model` — `useModelViewer` hook + `<ModelViewer>` component.
+  - `@chestnutlabs/gcode-preview-vue/model` — `useModelViewer` composable + `<ModelViewer>` component.
+  - `@chestnutlabs/gcode-preview-svelte/model` — `createModelViewer` store/action + the raw
+    `@chestnutlabs/gcode-preview-svelte/model/ModelViewer.svelte` component.
+  - `@chestnutlabs/gcode-preview-element/model` (+ `/model/define`) — the `<gcode-model-viewer>` custom
+    element (tag chosen to avoid the reserved `<model-viewer>`).
+
+  All additive — the toolpath surface is unchanged, and toolpath-only consumers don't pull the model
+  renderer (it lives behind the opt-in `/model` subpath). Every adapter passes the portable model
+  behavioral suite; each package gains `@chestnutlabs/gcode-model-renderer` as a dependency.
+
+### Patch Changes
+
+- Updated dependencies [[`718d1bd`](https://github.com/ChestnutLabs/gcode-preview/commit/718d1bde45856b58c37580d629da6d177f9f2004), [`8810ba4`](https://github.com/ChestnutLabs/gcode-preview/commit/8810ba43f1641362e1705e713a8afe93659f740a), [`b25ddb6`](https://github.com/ChestnutLabs/gcode-preview/commit/b25ddb68fdf4a5b12689c67f411e7d8c316086bb)]:
+  - @chestnutlabs/gcode-renderer-three@0.20.0
+  - @chestnutlabs/gcode-preview-core@0.20.0
+  - @chestnutlabs/gcode-model-renderer@0.20.0
+  - @chestnutlabs/gcode-parser@0.20.0
+  - @chestnutlabs/toolpath-core@0.20.0
+
 ## 0.19.0
 
 ### Patch Changes
diff --git a/packages/gcode-preview-element/package.json b/packages/gcode-preview-element/package.json
index 99c82e42..088db298 100644
--- a/packages/gcode-preview-element/package.json
+++ b/packages/gcode-preview-element/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@chestnutlabs/gcode-preview-element",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "description": "Framework-free <gcode-preview> Web Component for the Chestnut Labs G-code viewer (DD-007 D1 / DD-009 D5): a custom element bridging @chestnutlabs/gcode-preview-core, no framework peer dependency.",
   "keywords": [
     "gcode",
@@ -60,10 +60,10 @@
     "test": "vitest run"
   },
   "dependencies": {
-    "@chestnutlabs/gcode-model-renderer": "0.19.0",
-    "@chestnutlabs/gcode-parser": "0.19.0",
-    "@chestnutlabs/gcode-preview-core": "0.19.0",
-    "@chestnutlabs/gcode-renderer-three": "0.19.0",
-    "@chestnutlabs/toolpath-core": "0.19.0"
+    "@chestnutlabs/gcode-model-renderer": "0.20.0",
+    "@chestnutlabs/gcode-parser": "0.20.0",
+    "@chestnutlabs/gcode-preview-core": "0.20.0",
+    "@chestnutlabs/gcode-renderer-three": "0.20.0",
+    "@chestnutlabs/toolpath-core": "0.20.0"
   }
 }
diff --git a/packages/gcode-preview-react/CHANGELOG.md b/packages/gcode-preview-react/CHANGELOG.md
index 7b0c6ee8..4dd36628 100644
--- a/packages/gcode-preview-react/CHANGELOG.md
+++ b/packages/gcode-preview-react/CHANGELOG.md
@@ -1,5 +1,76 @@
 # @chestnutlabs/gcode-preview-react
 
+## 0.20.0
+
+### Minor Changes
+
+- [#427](https://github.com/ChestnutLabs/gcode-preview/pull/427) [`8810ba4`](https://github.com/ChestnutLabs/gcode-preview/commit/8810ba43f1641362e1705e713a8afe93659f740a) Thanks [@sobechestnut-dev](https://github.com/sobechestnut-dev)! - Close the dark-capability gaps so no shipped capability is reachable only through the
+  `raw.renderer()` escape hatch, with full parity across all four framework adapters (DD-031).
+
+  **New on the public controller (`GcodePreviewControls`), so it flows to every adapter's `controls`:**
+  - `getRenderStats()` — the DD-027 render-diagnostics snapshot (backend, GPU, geometry mode, build
+    parallelism, timings), previously reachable only on the Three renderer. Returns `null` on the 2D
+    renderer (which produces no GPU/geometry diagnostics — never a fabricated stats object).
+  - `pickSegment(ndcX, ndcY, threshold?)` — source-mapping / segment picking, previously renderer-only.
+  - `isColorModeAvailable(mode)` — the honest per-file color-mode capability gate.
+
+  **New capability-aware state (`GcodePreviewState`):** `availableColorModes`, `hasRetractions`,
+  `hasColorChanges` — refreshed after each parse, so a UI can offer and _explain_ controls instead of
+  guessing (e.g. gray out feature coloring on a file with no feature roles, with a reason).
+
+  **Adapter parity:**
+  - `hiddenFeatureRoles` is now a declarative prop (Vue/React/Svelte) and a `hidden-feature-roles`
+    attribute (Web Component) — the declarative form of `setFeatureRoleVisible` (hide Skirt/Brim to
+    declutter a part). Gate it on `capabilities.featureRoles`.
+  - `capture()` is now a top-level method on the Vue/React/Svelte handles too, matching the Web
+    Component's `element.capture()`.
+  - Web Component: `renderer`/`adjacentLayers` gain property accessors; the package now also re-exports
+    `RendererMode` and `PreviewRenderer`.
+
+  All additive — existing code keeps working unchanged; the 2D renderer honors the widened contract as
+  documented no-ops / honest `null`. The portable behavioral suite is extended (layer-range, color-mode
+  gating, diagnostics + picking reachability) and gains a controls-completeness parity guard so a
+  capability can no longer ship in core and silently vanish from an adapter.
+
+- [#427](https://github.com/ChestnutLabs/gcode-preview/pull/427) [`b25ddb6`](https://github.com/ChestnutLabs/gcode-preview/commit/b25ddb68fdf4a5b12689c67f411e7d8c316086bb) Thanks [@sobechestnut-dev](https://github.com/sobechestnut-dev)! - Make interactive **source-model viewing** (STL / 3MF) a first-class, declarative half of the SDK —
+  the Prepare side alongside the toolpath Preview side — so consumers no longer have to drop to the
+  imperative `createModelViewer` engine to show a model in a framework (DD-031).
+
+  **New framework-neutral controller** (`@chestnutlabs/gcode-model-renderer`):
+  - `createModelPreviewController(options)` — the Prepare-side analogue of `gcode-preview-core`'s toolpath
+    controller. It wraps the existing `createModelViewer` engine unchanged and adds what a framework
+    binding needs: canvas-deferred construction with `bindCanvas` (rebuilding on a canvas swap and
+    replaying the last source), a reactive `getState()`/`onStateChange()` snapshot derived from the
+    engine's events (`ModelPreviewState`: `loading`/`ready`/`rendererSupported`/`objectCount`/`materials`/
+    `instancedCount`/`decimationApplied`/`bounds`/`plates`/`hasPlates`/`cameraState`/`progress`/`error`),
+    and an op queue for calls made before the canvas binds. `ModelPreviewControls` exposes `setSource`,
+    `setView`, get/`setCameraState`, `setBackground`, `setInteractionQuality`, `setRenderScope`, `frame`,
+    `resize`, and `capture`.
+  - A portable model behavioral suite ships via the `@chestnutlabs/gcode-model-renderer/testing` subpath
+    (`runModelBehavioralSuite`) with controls/state completeness parity guards.
+
+  **New `/model` adapter subpath on every framework** — thin shells over the one controller, mirroring
+  each framework's toolpath idiom:
+  - `@chestnutlabs/gcode-preview-react/model` — `useModelViewer` hook + `<ModelViewer>` component.
+  - `@chestnutlabs/gcode-preview-vue/model` — `useModelViewer` composable + `<ModelViewer>` component.
+  - `@chestnutlabs/gcode-preview-svelte/model` — `createModelViewer` store/action + the raw
+    `@chestnutlabs/gcode-preview-svelte/model/ModelViewer.svelte` component.
+  - `@chestnutlabs/gcode-preview-element/model` (+ `/model/define`) — the `<gcode-model-viewer>` custom
+    element (tag chosen to avoid the reserved `<model-viewer>`).
+
+  All additive — the toolpath surface is unchanged, and toolpath-only consumers don't pull the model
+  renderer (it lives behind the opt-in `/model` subpath). Every adapter passes the portable model
+  behavioral suite; each package gains `@chestnutlabs/gcode-model-renderer` as a dependency.
+
+### Patch Changes
+
+- Updated dependencies [[`718d1bd`](https://github.com/ChestnutLabs/gcode-preview/commit/718d1bde45856b58c37580d629da6d177f9f2004), [`8810ba4`](https://github.com/ChestnutLabs/gcode-preview/commit/8810ba43f1641362e1705e713a8afe93659f740a), [`b25ddb6`](https://github.com/ChestnutLabs/gcode-preview/commit/b25ddb68fdf4a5b12689c67f411e7d8c316086bb)]:
+  - @chestnutlabs/gcode-renderer-three@0.20.0
+  - @chestnutlabs/gcode-preview-core@0.20.0
+  - @chestnutlabs/gcode-model-renderer@0.20.0
+  - @chestnutlabs/gcode-parser@0.20.0
+  - @chestnutlabs/toolpath-core@0.20.0
+
 ## 0.19.0
 
 ### Patch Changes
diff --git a/packages/gcode-preview-react/package.json b/packages/gcode-preview-react/package.json
index 2076e0ab..404fb03d 100644
--- a/packages/gcode-preview-react/package.json
+++ b/packages/gcode-preview-react/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@chestnutlabs/gcode-preview-react",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "description": "Thin React integration for the Chestnut Labs G-code viewer (DD-007 D1 amendment): useGcodePreview hook + GcodePreview component as a reactivity bridge over @chestnutlabs/gcode-preview-core.",
   "keywords": [
     "gcode",
@@ -53,11 +53,11 @@
     "test": "vitest run"
   },
   "dependencies": {
-    "@chestnutlabs/gcode-model-renderer": "0.19.0",
-    "@chestnutlabs/gcode-parser": "0.19.0",
-    "@chestnutlabs/gcode-preview-core": "0.19.0",
-    "@chestnutlabs/gcode-renderer-three": "0.19.0",
-    "@chestnutlabs/toolpath-core": "0.19.0"
+    "@chestnutlabs/gcode-model-renderer": "0.20.0",
+    "@chestnutlabs/gcode-parser": "0.20.0",
+    "@chestnutlabs/gcode-preview-core": "0.20.0",
+    "@chestnutlabs/gcode-renderer-three": "0.20.0",
+    "@chestnutlabs/toolpath-core": "0.20.0"
   },
   "peerDependencies": {
     "react": "^18.0.0 || ^19.0.0"
diff --git a/packages/gcode-preview-svelte/CHANGELOG.md b/packages/gcode-preview-svelte/CHANGELOG.md
index 8f741945..762f68e7 100644
--- a/packages/gcode-preview-svelte/CHANGELOG.md
+++ b/packages/gcode-preview-svelte/CHANGELOG.md
@@ -1,5 +1,76 @@
 # @chestnutlabs/gcode-preview-svelte
 
+## 0.20.0
+
+### Minor Changes
+
+- [#427](https://github.com/ChestnutLabs/gcode-preview/pull/427) [`8810ba4`](https://github.com/ChestnutLabs/gcode-preview/commit/8810ba43f1641362e1705e713a8afe93659f740a) Thanks [@sobechestnut-dev](https://github.com/sobechestnut-dev)! - Close the dark-capability gaps so no shipped capability is reachable only through the
+  `raw.renderer()` escape hatch, with full parity across all four framework adapters (DD-031).
+
+  **New on the public controller (`GcodePreviewControls`), so it flows to every adapter's `controls`:**
+  - `getRenderStats()` — the DD-027 render-diagnostics snapshot (backend, GPU, geometry mode, build
+    parallelism, timings), previously reachable only on the Three renderer. Returns `null` on the 2D
+    renderer (which produces no GPU/geometry diagnostics — never a fabricated stats object).
+  - `pickSegment(ndcX, ndcY, threshold?)` — source-mapping / segment picking, previously renderer-only.
+  - `isColorModeAvailable(mode)` — the honest per-file color-mode capability gate.
+
+  **New capability-aware state (`GcodePreviewState`):** `availableColorModes`, `hasRetractions`,
+  `hasColorChanges` — refreshed after each parse, so a UI can offer and _explain_ controls instead of
+  guessing (e.g. gray out feature coloring on a file with no feature roles, with a reason).
+
+  **Adapter parity:**
+  - `hiddenFeatureRoles` is now a declarative prop (Vue/React/Svelte) and a `hidden-feature-roles`
+    attribute (Web Component) — the declarative form of `setFeatureRoleVisible` (hide Skirt/Brim to
+    declutter a part). Gate it on `capabilities.featureRoles`.
+  - `capture()` is now a top-level method on the Vue/React/Svelte handles too, matching the Web
+    Component's `element.capture()`.
+  - Web Component: `renderer`/`adjacentLayers` gain property accessors; the package now also re-exports
+    `RendererMode` and `PreviewRenderer`.
+
+  All additive — existing code keeps working unchanged; the 2D renderer honors the widened contract as
+  documented no-ops / honest `null`. The portable behavioral suite is extended (layer-range, color-mode
+  gating, diagnostics + picking reachability) and gains a controls-completeness parity guard so a
+  capability can no longer ship in core and silently vanish from an adapter.
+
+- [#427](https://github.com/ChestnutLabs/gcode-preview/pull/427) [`b25ddb6`](https://github.com/ChestnutLabs/gcode-preview/commit/b25ddb68fdf4a5b12689c67f411e7d8c316086bb) Thanks [@sobechestnut-dev](https://github.com/sobechestnut-dev)! - Make interactive **source-model viewing** (STL / 3MF) a first-class, declarative half of the SDK —
+  the Prepare side alongside the toolpath Preview side — so consumers no longer have to drop to the
+  imperative `createModelViewer` engine to show a model in a framework (DD-031).
+
+  **New framework-neutral controller** (`@chestnutlabs/gcode-model-renderer`):
+  - `createModelPreviewController(options)` — the Prepare-side analogue of `gcode-preview-core`'s toolpath
+    controller. It wraps the existing `createModelViewer` engine unchanged and adds what a framework
+    binding needs: canvas-deferred construction with `bindCanvas` (rebuilding on a canvas swap and
+    replaying the last source), a reactive `getState()`/`onStateChange()` snapshot derived from the
+    engine's events (`ModelPreviewState`: `loading`/`ready`/`rendererSupported`/`objectCount`/`materials`/
+    `instancedCount`/`decimationApplied`/`bounds`/`plates`/`hasPlates`/`cameraState`/`progress`/`error`),
+    and an op queue for calls made before the canvas binds. `ModelPreviewControls` exposes `setSource`,
+    `setView`, get/`setCameraState`, `setBackground`, `setInteractionQuality`, `setRenderScope`, `frame`,
+    `resize`, and `capture`.
+  - A portable model behavioral suite ships via the `@chestnutlabs/gcode-model-renderer/testing` subpath
+    (`runModelBehavioralSuite`) with controls/state completeness parity guards.
+
+  **New `/model` adapter subpath on every framework** — thin shells over the one controller, mirroring
+  each framework's toolpath idiom:
+  - `@chestnutlabs/gcode-preview-react/model` — `useModelViewer` hook + `<ModelViewer>` component.
+  - `@chestnutlabs/gcode-preview-vue/model` — `useModelViewer` composable + `<ModelViewer>` component.
+  - `@chestnutlabs/gcode-preview-svelte/model` — `createModelViewer` store/action + the raw
+    `@chestnutlabs/gcode-preview-svelte/model/ModelViewer.svelte` component.
+  - `@chestnutlabs/gcode-preview-element/model` (+ `/model/define`) — the `<gcode-model-viewer>` custom
+    element (tag chosen to avoid the reserved `<model-viewer>`).
+
+  All additive — the toolpath surface is unchanged, and toolpath-only consumers don't pull the model
+  renderer (it lives behind the opt-in `/model` subpath). Every adapter passes the portable model
+  behavioral suite; each package gains `@chestnutlabs/gcode-model-renderer` as a dependency.
+
+### Patch Changes
+
+- Updated dependencies [[`718d1bd`](https://github.com/ChestnutLabs/gcode-preview/commit/718d1bde45856b58c37580d629da6d177f9f2004), [`8810ba4`](https://github.com/ChestnutLabs/gcode-preview/commit/8810ba43f1641362e1705e713a8afe93659f740a), [`b25ddb6`](https://github.com/ChestnutLabs/gcode-preview/commit/b25ddb68fdf4a5b12689c67f411e7d8c316086bb)]:
+  - @chestnutlabs/gcode-renderer-three@0.20.0
+  - @chestnutlabs/gcode-preview-core@0.20.0
+  - @chestnutlabs/gcode-model-renderer@0.20.0
+  - @chestnutlabs/gcode-parser@0.20.0
+  - @chestnutlabs/toolpath-core@0.20.0
+
 ## 0.19.0
 
 ### Patch Changes
diff --git a/packages/gcode-preview-svelte/package.json b/packages/gcode-preview-svelte/package.json
index 0c62e835..8ca0c71d 100644
--- a/packages/gcode-preview-svelte/package.json
+++ b/packages/gcode-preview-svelte/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@chestnutlabs/gcode-preview-svelte",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "description": "Thin Svelte integration for the Chestnut Labs G-code viewer (DD-007 D1 amendment): createGcodePreview store/action API + GcodePreview component as a reactivity bridge over @chestnutlabs/gcode-preview-core.",
   "keywords": [
     "gcode",
@@ -64,11 +64,11 @@
     "test": "vitest run"
   },
   "dependencies": {
-    "@chestnutlabs/gcode-model-renderer": "0.19.0",
-    "@chestnutlabs/gcode-parser": "0.19.0",
-    "@chestnutlabs/gcode-preview-core": "0.19.0",
-    "@chestnutlabs/gcode-renderer-three": "0.19.0",
-    "@chestnutlabs/toolpath-core": "0.19.0"
+    "@chestnutlabs/gcode-model-renderer": "0.20.0",
+    "@chestnutlabs/gcode-parser": "0.20.0",
+    "@chestnutlabs/gcode-preview-core": "0.20.0",
+    "@chestnutlabs/gcode-renderer-three": "0.20.0",
+    "@chestnutlabs/toolpath-core": "0.20.0"
   },
   "peerDependencies": {
     "svelte": "^4.0.0 || ^5.0.0"
diff --git a/packages/gcode-preview-vue/CHANGELOG.md b/packages/gcode-preview-vue/CHANGELOG.md
index 6b4bb5c7..a19fe5f9 100644
--- a/packages/gcode-preview-vue/CHANGELOG.md
+++ b/packages/gcode-preview-vue/CHANGELOG.md
@@ -1,5 +1,76 @@
 # @chestnutlabs/gcode-preview-vue
 
+## 0.20.0
+
+### Minor Changes
+
+- [#427](https://github.com/ChestnutLabs/gcode-preview/pull/427) [`8810ba4`](https://github.com/ChestnutLabs/gcode-preview/commit/8810ba43f1641362e1705e713a8afe93659f740a) Thanks [@sobechestnut-dev](https://github.com/sobechestnut-dev)! - Close the dark-capability gaps so no shipped capability is reachable only through the
+  `raw.renderer()` escape hatch, with full parity across all four framework adapters (DD-031).
+
+  **New on the public controller (`GcodePreviewControls`), so it flows to every adapter's `controls`:**
+  - `getRenderStats()` — the DD-027 render-diagnostics snapshot (backend, GPU, geometry mode, build
+    parallelism, timings), previously reachable only on the Three renderer. Returns `null` on the 2D
+    renderer (which produces no GPU/geometry diagnostics — never a fabricated stats object).
+  - `pickSegment(ndcX, ndcY, threshold?)` — source-mapping / segment picking, previously renderer-only.
+  - `isColorModeAvailable(mode)` — the honest per-file color-mode capability gate.
+
+  **New capability-aware state (`GcodePreviewState`):** `availableColorModes`, `hasRetractions`,
+  `hasColorChanges` — refreshed after each parse, so a UI can offer and _explain_ controls instead of
+  guessing (e.g. gray out feature coloring on a file with no feature roles, with a reason).
+
+  **Adapter parity:**
+  - `hiddenFeatureRoles` is now a declarative prop (Vue/React/Svelte) and a `hidden-feature-roles`
+    attribute (Web Component) — the declarative form of `setFeatureRoleVisible` (hide Skirt/Brim to
+    declutter a part). Gate it on `capabilities.featureRoles`.
+  - `capture()` is now a top-level method on the Vue/React/Svelte handles too, matching the Web
+    Component's `element.capture()`.
+  - Web Component: `renderer`/`adjacentLayers` gain property accessors; the package now also re-exports
+    `RendererMode` and `PreviewRenderer`.
+
+  All additive — existing code keeps working unchanged; the 2D renderer honors the widened contract as
+  documented no-ops / honest `null`. The portable behavioral suite is extended (layer-range, color-mode
+  gating, diagnostics + picking reachability) and gains a controls-completeness parity guard so a
+  capability can no longer ship in core and silently vanish from an adapter.
+
+- [#427](https://github.com/ChestnutLabs/gcode-preview/pull/427) [`b25ddb6`](https://github.com/ChestnutLabs/gcode-preview/commit/b25ddb68fdf4a5b12689c67f411e7d8c316086bb) Thanks [@sobechestnut-dev](https://github.com/sobechestnut-dev)! - Make interactive **source-model viewing** (STL / 3MF) a first-class, declarative half of the SDK —
+  the Prepare side alongside the toolpath Preview side — so consumers no longer have to drop to the
+  imperative `createModelViewer` engine to show a model in a framework (DD-031).
+
+  **New framework-neutral controller** (`@chestnutlabs/gcode-model-renderer`):
+  - `createModelPreviewController(options)` — the Prepare-side analogue of `gcode-preview-core`'s toolpath
+    controller. It wraps the existing `createModelViewer` engine unchanged and adds what a framework
+    binding needs: canvas-deferred construction with `bindCanvas` (rebuilding on a canvas swap and
+    replaying the last source), a reactive `getState()`/`onStateChange()` snapshot derived from the
+    engine's events (`ModelPreviewState`: `loading`/`ready`/`rendererSupported`/`objectCount`/`materials`/
+    `instancedCount`/`decimationApplied`/`bounds`/`plates`/`hasPlates`/`cameraState`/`progress`/`error`),
+    and an op queue for calls made before the canvas binds. `ModelPreviewControls` exposes `setSource`,
+    `setView`, get/`setCameraState`, `setBackground`, `setInteractionQuality`, `setRenderScope`, `frame`,
+    `resize`, and `capture`.
+  - A portable model behavioral suite ships via the `@chestnutlabs/gcode-model-renderer/testing` subpath
+    (`runModelBehavioralSuite`) with controls/state completeness parity guards.
+
+  **New `/model` adapter subpath on every framework** — thin shells over the one controller, mirroring
+  each framework's toolpath idiom:
+  - `@chestnutlabs/gcode-preview-react/model` — `useModelViewer` hook + `<ModelViewer>` component.
+  - `@chestnutlabs/gcode-preview-vue/model` — `useModelViewer` composable + `<ModelViewer>` component.
+  - `@chestnutlabs/gcode-preview-svelte/model` — `createModelViewer` store/action + the raw
+    `@chestnutlabs/gcode-preview-svelte/model/ModelViewer.svelte` component.
+  - `@chestnutlabs/gcode-preview-element/model` (+ `/model/define`) — the `<gcode-model-viewer>` custom
+    element (tag chosen to avoid the reserved `<model-viewer>`).
+
+  All additive — the toolpath surface is unchanged, and toolpath-only consumers don't pull the model
+  renderer (it lives behind the opt-in `/model` subpath). Every adapter passes the portable model
+  behavioral suite; each package gains `@chestnutlabs/gcode-model-renderer` as a dependency.
+
+### Patch Changes
+
+- Updated dependencies [[`718d1bd`](https://github.com/ChestnutLabs/gcode-preview/commit/718d1bde45856b58c37580d629da6d177f9f2004), [`8810ba4`](https://github.com/ChestnutLabs/gcode-preview/commit/8810ba43f1641362e1705e713a8afe93659f740a), [`b25ddb6`](https://github.com/ChestnutLabs/gcode-preview/commit/b25ddb68fdf4a5b12689c67f411e7d8c316086bb)]:
+  - @chestnutlabs/gcode-renderer-three@0.20.0
+  - @chestnutlabs/gcode-preview-core@0.20.0
+  - @chestnutlabs/gcode-model-renderer@0.20.0
+  - @chestnutlabs/gcode-parser@0.20.0
+  - @chestnutlabs/toolpath-core@0.20.0
+
 ## 0.19.0
 
 ### Patch Changes
diff --git a/packages/gcode-preview-vue/package.json b/packages/gcode-preview-vue/package.json
index c5ac5993..db7c6895 100644
--- a/packages/gcode-preview-vue/package.json
+++ b/packages/gcode-preview-vue/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@chestnutlabs/gcode-preview-vue",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "description": "Thin Vue 3 integration for the Chestnut Labs G-code viewer (DD-007): useGcodePreview composable + GcodePreview component over the framework-neutral parser/renderer/progress packages.",
   "keywords": [
     "gcode",
@@ -54,11 +54,11 @@
     "test": "vitest run"
   },
   "dependencies": {
-    "@chestnutlabs/gcode-model-renderer": "0.19.0",
-    "@chestnutlabs/gcode-parser": "0.19.0",
-    "@chestnutlabs/gcode-renderer-three": "0.19.0",
-    "@chestnutlabs/toolpath-core": "0.19.0",
-    "@chestnutlabs/gcode-preview-core": "0.19.0"
+    "@chestnutlabs/gcode-model-renderer": "0.20.0",
+    "@chestnutlabs/gcode-parser": "0.20.0",
+    "@chestnutlabs/gcode-renderer-three": "0.20.0",
+    "@chestnutlabs/toolpath-core": "0.20.0",
+    "@chestnutlabs/gcode-preview-core": "0.20.0"
   },
   "peerDependencies": {
     "vue": "^3.4.0"
diff --git a/packages/gcode-renderer-2d/CHANGELOG.md b/packages/gcode-renderer-2d/CHANGELOG.md
index a7e04b99..8d41ec78 100644
--- a/packages/gcode-renderer-2d/CHANGELOG.md
+++ b/packages/gcode-renderer-2d/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @chestnutlabs/gcode-renderer-2d
 
+## 0.20.0
+
+### Patch Changes
+
+- Updated dependencies []:
+  - @chestnutlabs/gcode-colors@0.20.0
+  - @chestnutlabs/toolpath-core@0.20.0
+
 ## 0.19.0
 
 ### Patch Changes
diff --git a/packages/gcode-renderer-2d/package.json b/packages/gcode-renderer-2d/package.json
index 68f71504..a46cd15b 100644
--- a/packages/gcode-renderer-2d/package.json
+++ b/packages/gcode-renderer-2d/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@chestnutlabs/gcode-renderer-2d",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "description": "Low-resource Canvas 2D layer renderer for the Chestnut Labs G-code viewer (DD-014 / E8): an opt-in current/adjacent-layer 2D view over the existing ToolpathIR for low-GPU/low-memory/WebGL-blocked devices. No three, no framework.",
   "keywords": [
     "gcode",
@@ -49,7 +49,7 @@
     "test": "vitest run"
   },
   "dependencies": {
-    "@chestnutlabs/gcode-colors": "0.19.0",
-    "@chestnutlabs/toolpath-core": "0.19.0"
+    "@chestnutlabs/gcode-colors": "0.20.0",
+    "@chestnutlabs/toolpath-core": "0.20.0"
   }
 }
diff --git a/packages/gcode-renderer-three/CHANGELOG.md b/packages/gcode-renderer-three/CHANGELOG.md
index 0ab97efb..51308574 100644
--- a/packages/gcode-renderer-three/CHANGELOG.md
+++ b/packages/gcode-renderer-three/CHANGELOG.md
@@ -1,5 +1,23 @@
 # @chestnutlabs/gcode-renderer-three
 
+## 0.20.0
+
+### Minor Changes
+
+- [#427](https://github.com/ChestnutLabs/gcode-preview/pull/427) [`718d1bd`](https://github.com/ChestnutLabs/gcode-preview/commit/718d1bde45856b58c37580d629da6d177f9f2004) Thanks [@sobechestnut-dev](https://github.com/sobechestnut-dev)! - `CaptureOptions` gains `includeBuildVolume?: boolean` (default `true`). Set it to `false` to exclude
+  the whole build-volume group (grid + bed surface + origin + cage) from the off-screen capture render
+  only — so `capture({ background: 'transparent', includeBuildVolume: false })` produces a clean
+  toolpath-only cutout, matching `ModelRenderer` thumbnails. The live view is untouched (visibility is
+  restored synchronously, no intermediate frame is painted). The option flows through
+  `GcodePreviewControls.capture` to every adapter; it is a no-op where there is no build volume
+  (`ModelViewer`) or no capture (the 2D renderer).
+
+### Patch Changes
+
+- Updated dependencies []:
+  - @chestnutlabs/gcode-colors@0.20.0
+  - @chestnutlabs/toolpath-core@0.20.0
+
 ## 0.19.0
 
 ### Minor Changes
diff --git a/packages/gcode-renderer-three/package.json b/packages/gcode-renderer-three/package.json
index fb82ae54..60fa3394 100644
--- a/packages/gcode-renderer-three/package.json
+++ b/packages/gcode-renderer-three/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@chestnutlabs/gcode-renderer-three",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "description": "Three.js toolpath renderer consuming ToolpathIR (DD-004). Phases 1-2: geometry builders + scene/lifecycle.",
   "keywords": [
     "gcode",
@@ -49,8 +49,8 @@
     "test": "vitest run"
   },
   "dependencies": {
-    "@chestnutlabs/gcode-colors": "0.19.0",
-    "@chestnutlabs/toolpath-core": "0.19.0"
+    "@chestnutlabs/gcode-colors": "0.20.0",
+    "@chestnutlabs/toolpath-core": "0.20.0"
   },
   "devDependencies": {
     "@types/three": "0.178.0"
diff --git a/packages/toolpath-core/CHANGELOG.md b/packages/toolpath-core/CHANGELOG.md
index 96d2df6e..f95a4c94 100644
--- a/packages/toolpath-core/CHANGELOG.md
+++ b/packages/toolpath-core/CHANGELOG.md
@@ -1,5 +1,7 @@
 # @chestnutlabs/toolpath-core
 
+## 0.20.0
+
 ## 0.19.0
 
 ### Minor Changes
diff --git a/packages/toolpath-core/package.json b/packages/toolpath-core/package.json
index f36b06ae..01d15f47 100644
--- a/packages/toolpath-core/package.json
+++ b/packages/toolpath-core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@chestnutlabs/toolpath-core",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "description": "Neutral ToolpathIR and capability model for the Chestnut Labs G-code Preview toolpath stack.",
   "keywords": [
     "gcode",