feat(sim): forest carries real multi-strength Right variants

Ran the baker for the forest scale: real flow-stabilized painterly Right variants
1-4 now back the dreamlike axis on real Yosemite footage (was: 1 real + 3 ffmpeg
placeholders). By-eye finding this surfaced: sd-turbo's painterly transform is
sharply non-linear in img2img strength (barely registers <0.5, ramps hard through
~0.5-0.65), so the initial linear 0.28-0.58 ramp left levels 1-3 ~identical to
raw. Re-baked with a clustered 0.46/0.52/0.58/0.64 curve -> a real perceptual
ramp: gentle dream haze -> clearly impressionist -> strongest, each notch visibly
dreamier, temporally calm (flow-stabilized).

- manifest: forest right_variants 1-4 all model 'sd-turbo+farneback-flow'
- setup_sample_media.py: now only stages the neutral base; the baker owns the
  Right variants, so re-running it never clobbers a real bake
- docs: USER_GUIDE setup steps + ROADMAP v2v vertical-slice-done note

Suite 228 passed / 2 skipped.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

docs/ROADMAP.md

@@ -175,7 +175,16 @@ every transition, so fast navigation stays responsive on placeholder media.
   scales-library/right-axis design §1/§4); a real multi-strength flow-stabilized
   re-bake per base clip + the multilingual label/string tables + TTS. The
   **scale-ring transitions** (forward/reverse per-edge morphs) are part of this
-  offline pipeline too — the simulator currently uses placeholders.
+  offline pipeline too.
+  - **Vertical slice done (session 0012):** the Right-variant half is
+    productionized and run for the **forest** scale — `simulator/bake_right_variants.py`
+    (the POC flow-restyle algorithm, repo-resident) bakes real strengths 1–4 on a
+    by-eye keyframe-strength ramp; forest now carries real Right variants in the
+    sim, so the dreamlike-axis look is judgeable on real footage. **Still
+    deferred:** real Right variants for cosmos/abyss (need their real strict-PD
+    bases sourced first) and the **real i2v ring transitions** (need a 2nd real
+    base + a generative-video model not in the POC). Plan:
+    [`2026-06-08-v2v-vertical-slice-forest-right-variants.md`](./superpowers/plans/2026-06-08-v2v-vertical-slice-forest-right-variants.md).
 - **Catalog model changes** — audio *source* + "neutral base" vs "altered
   variant" flag (sub-project 2 territory, design §13).
 

docs/USER_GUIDE.md

@@ -298,16 +298,22 @@ piece moved from *selecting* clips to *altering* them.)
 **One-time setup — populate the sample footage** (look-tuning only; not shipped
 content):
 
-    python simulator/setup_sample_media.py    # the forest scale (real POC base + Right variants)
-    python simulator/setup_scales_media.py    # the cosmos + abyss scales + ring transitions
+    python simulator/setup_sample_media.py             # stage the forest neutral base
+    python -m simulator.bake_right_variants --scale forest   # real Right variants (SD on MPS, ~11 min)
+    python simulator/setup_scales_media.py             # the cosmos + abyss scales + ring transitions
 
-`setup_sample_media.py` copies the session-0008 POC artifacts (`~/hef-poc/out/`)
-into `simulator/sample_media/forest/` — the neutral base clip and the real
-flow-stabilized Right restyle — and generates placeholder intermediate Right
-strengths. `setup_scales_media.py` makes the scale **ring** demonstrable: cheap
-synthetic placeholder bases for the two true-PD scales (`cosmos` = NASA/Hubble,
-`abyss` = NOAA Ocean Exploration) plus the per-edge zoom/warp transition clips.
-The `.mp4` binaries are gitignored.
+`setup_sample_media.py` stages the forest neutral base from the session-0008 POC
+artifacts (`~/hef-poc/out/neutral.mp4`). `bake_right_variants.py` then produces
+the **real** flow-stabilized painterly Right variants (strengths 1–4) for the
+forest scale — SD img2img keyframes + Farneback optical-flow tweens on Apple MPS,
+the temporally-calm POC algorithm, productionized (scales design §1/§4). The
+keyframe-strength ramp per Right level is by-eye tunable in
+`simulator/bake_right_variants.py`. `setup_scales_media.py` makes the scale
+**ring** demonstrable: cheap synthetic placeholder bases for the two true-PD
+scales (`cosmos` = NASA/Hubble, `abyss` = NOAA Ocean Exploration) plus the
+per-edge zoom/warp transition clips — these scales carry a raw base only (no real
+Right variants yet; the baker can extend to them once their real footage is
+sourced). The `.mp4` binaries are gitignored.
 
 **Run it (Docker):**