diff --git a/discussion/workflow/plans/PLN-0017-frame-composer-core-and-hardware-ownership.md b/discussion/workflow/plans/PLN-0017-frame-composer-core-and-hardware-ownership.md
index fac4e898..e7d3ff62 100644
--- a/discussion/workflow/plans/PLN-0017-frame-composer-core-and-hardware-ownership.md
+++ b/discussion/workflow/plans/PLN-0017-frame-composer-core-and-hardware-ownership.md
@@ -26,6 +26,7 @@ Introduce `FrameComposer` as a first-class hardware-side subsystem and move cano
   - optional cache;
   - optional resolver;
   - owned `SpriteController`.
+- Preserve scene-layer metadata naming aligned with the world path contract, including `parallax_factor` as the canonical per-layer camera multiplier field.
 - Aggregate `FrameComposer` inside `Hardware`.
 - Expose the minimum driver-facing surface required for subsequent plans.
 
diff --git a/discussion/workflow/plans/PLN-0019-scene-binding-camera-and-scene-status.md b/discussion/workflow/plans/PLN-0019-scene-binding-camera-and-scene-status.md
index 33c3693d..1b83928d 100644
--- a/discussion/workflow/plans/PLN-0019-scene-binding-camera-and-scene-status.md
+++ b/discussion/workflow/plans/PLN-0019-scene-binding-camera-and-scene-status.md
@@ -16,6 +16,7 @@ Implement the `FrameComposer` scene-binding contract, minimal camera state, and
 
 `DEC-0014` locks scene activation around `bind_scene(scene_bank_id)` with `SceneBankPoolAccess`, pointer-based access only, and `scene_bank_id + Arc<SceneBank>` retained inside `FrameComposer`.
 The same decision also requires `FrameComposer` to remain tile-size agnostic and to preserve canonical per-layer `tile_size`, including `8x8`.
+For the scene-layer motion contract, this plan treats `parallax_factor` as the canonical field name for the per-layer camera multiplier.
 
 ## Scope
 
@@ -92,6 +93,7 @@ Align cache/resolver lifetime with the active scene contract.
 - On unbind:
   - discard cache/resolver and invalidate the world path.
 - Any initialization must derive layer math from the bound scene tile sizes instead of assuming `16x16`.
+- Any layer-camera math or related contract references must use `parallax_factor` terminology rather than generic `motion` naming.
 
 **File(s):**
 - `crates/console/prometeu-drivers/src/frame_composer.rs`
@@ -104,6 +106,7 @@ Align cache/resolver lifetime with the active scene contract.
 - scene status reflects no-scene and active-scene states.
 - camera coordinates are stored as top-left pixel-space values.
 - bind/unbind remains valid for scenes whose layers use `8x8` tiles.
+- scene binding and camera-facing contracts preserve `parallax_factor` as the canonical layer field name.
 
 ### Integration Tests
 - `FrameComposer` can resolve a scene from the pool and survive no-scene operation.
@@ -119,6 +122,7 @@ Align cache/resolver lifetime with the active scene contract.
 - [ ] Camera contract is implemented as `i32` top-left viewport coordinates.
 - [ ] Cache/resolver lifetime follows scene bind/unbind.
 - [ ] Scene bind/cache/resolver setup preserves canonical per-layer tile sizes, including `8x8`.
+- [ ] Scene-layer camera multiplier naming is aligned on `parallax_factor`.
 
 ## Dependencies
 
diff --git a/discussion/workflow/plans/PLN-0020-cache-refresh-and-render-frame-path.md b/discussion/workflow/plans/PLN-0020-cache-refresh-and-render-frame-path.md
index 9f1064f4..925517e8 100644
--- a/discussion/workflow/plans/PLN-0020-cache-refresh-and-render-frame-path.md
+++ b/discussion/workflow/plans/PLN-0020-cache-refresh-and-render-frame-path.md
@@ -16,6 +16,7 @@ Connect `FrameComposer` to `SceneViewportResolver`, apply cache refreshes inside
 
 `DEC-0014` requires that cache refresh policy remain inside `FrameComposer` and that `FrameComposer.render_frame()` become the canonical frame entry while `Gfx` remains only the low-level execution backend.
 `DEC-0014` also requires the world path to remain tile-size agnostic, with explicit support for `8x8`, `16x16`, and `32x32` scene-layer tile sizes.
+For per-layer camera scaling, this plan treats `parallax_factor` as the canonical scene-layer field name.
 
 ## Scope
 
@@ -43,6 +44,7 @@ Move cache-refresh orchestration fully into `FrameComposer`.
   - apply them to `SceneViewportCache`
 - Keep `Gfx` unaware of refresh semantics.
 - Ensure resolver and refresh math follow the bound layer `tile_size` values rather than any fixed `16x16` default.
+- Ensure per-layer camera math is expressed through `parallax_factor` naming in the resolver/cache path.
 
 **File(s):**
 - `crates/console/prometeu-drivers/src/frame_composer.rs`
@@ -103,6 +105,7 @@ Protect the two canonical frame modes.
 - `render_frame()` with a scene applies resolver refreshes before composition.
 - cache refresh requests are applied by `FrameComposer`, not `Gfx`.
 - `render_frame()` with an `8x8` scene uses resolver/cache math derived from layer tile size rather than a `16x16` assumption.
+- Resolver/cache-facing tests use `parallax_factor` terminology for per-layer camera scaling.
 
 ### Integration Tests
 - scene bind + camera set + sprite emission + `render_frame()` produces the expected composed frame.
@@ -119,6 +122,7 @@ Protect the two canonical frame modes.
 - [ ] No-scene `sprites + fades` behavior remains valid.
 - [ ] `Gfx` remains backend-only for this path.
 - [ ] The world path is explicitly covered for `8x8` scenes without `16x16`-specific assumptions.
+- [ ] Resolver/cache/frame-path terminology is aligned on `parallax_factor` for scene-layer camera scaling.
 
 ## Dependencies