fix: re-stage the two newest heroes to the calibration-set bar (#93)

A card-scale review found vse-gamma-cross and light-link-studio below
the gallery bar: both sorted as the odd one out in their own committed
contact sheets, which the CLAUDE.md contact-sheet gate exists to
prevent. The witness engineering was sound; the renders and a few
hygiene items were not.

vse-gamma-cross: the gamma-dip proof was a 0.115 red-channel delta
between two non-adjacent ~95x115 px swatches, invisible at card
scale, so a naive-lerp Blender would render a nearly identical image.
The bench is recomposed around four large fade panels with the
authentic-mid and naive-lerp-mid swatches large and adjacent at frame
center, the stage re-darkened to spec, and the pair labels mounted on
the plinth facing the camera. The check gains the final-frame sample
(frame 32, t=31/32) so the endpoint convention is pixel-backed end to
end, and strips_coll() now calls .strips directly instead of papering
over the 4.x rename with a .sequences fallback.

light-link-studio: the wall carried no wedge warmth (measured R-B
-0.1 against +8...+58 across the pinned calibration set) and ~40% of
the frame was featureless grey. Re-lit to a measured +20...+50 warm
wall pool, re-framed to ~75% subject fill with a TRACK_TO camera,
LINKED/UNLINKED plaques stood upright and legible at card scale, and
the rim-graze horizon stripe and clipped specular core eliminated.
Dead EEVEE debris removed (IS_5X, eevee_engine_id, a one-choice
--engine flag, an ignored engine parameter) and the unreproducible
EEVEE figures replaced with fresh probe measurements (3.7x linked
ratio on both 4.5.11 EEVEE Next and 5.1.2 EEVEE). The README witness
list now uses the dash bullets the gallery generator renders.

Measured values shifted with the re-lit scene and are updated
consistently (linked ratio 3.6x on 5.1 / 3.4x on 4.5, rise 206% /
213%; falsification exit 6 at hero/decoy 0.39x). Both examples pass
check-only on Blender 4.5.11 LTS and 5.1.2 with measured values
printed, and both contact sheets re-judged against the pinned set
with per-criterion numbers.

Signed-off-by: fOuttaMyPaint <TMhospitalitystrategies@gmail.com>

Author: TMHSDigital

README.md

@@ -310,7 +310,7 @@ consumed-input compositing contract, and a save/reload round-trip.
 </tr>
 <tr>
 <td width="46%" valign="middle">
-<a href="examples/light-link-studio/"><img src="examples/light-link-studio/preview.webp" alt="Light link studio: a blazing orange hero sphere over a LINKED plaque beside a dim steel decoy over UNLINKED on a dark studio floor - one key light restricted to the hero collection" /></a>
+<a href="examples/light-link-studio/"><img src="examples/light-link-studio/preview.webp" alt="Light link studio: a blazing orange hero sphere beside a dim steel decoy on a dark studio floor, upright LINKED and UNLINKED plaques below each, a warm light pool raking the wall behind - one key light restricted to the hero collection" /></a>
 </td>
 <td valign="middle">
 
@@ -326,7 +326,7 @@ honors linking too (measured), with Cycles pinned for deterministic samples.
 </tr>
 <tr>
 <td width="46%" valign="middle">
-<a href="examples/vse-gamma-cross/"><img src="examples/vse-gamma-cross/preview.webp" alt="VSE gamma cross: a mixing bench in a dark studio - eight emissive panels fading crimson to teal across the cross, with the brighter naive-lerp midpoint framed in hazard orange on the console below" /></a>
+<a href="examples/vse-gamma-cross/"><img src="examples/vse-gamma-cross/preview.webp" alt="VSE gamma cross: a mixing bench in a dark studio - four large emissive panels fading crimson to teal across the cross, with the true midpoint swatch beside the brighter naive-lerp midpoint framed in hazard orange at frame center" /></a>
 </td>
 <td valign="middle">
 

docs/gallery/assets/light-link-studio-hero.webp

@@ -524,14 +524,14 @@ <h2><a href="vse-gamma-cross/">vse-gamma-cross</a></h2>
           <a class="card-link" href="vse-gamma-cross/">View example <span aria-hidden="true">&rarr;</span></a>
         </div>
       </article>
-      <article class="card" data-tags="rendering">
+      <article class="card" data-tags="rendering objects">
         <a class="card-media" href="light-link-studio/" aria-label="light-link-studio example detail page">
           <img src="assets/light-link-studio-hero.webp" alt="light-link-studio — One key, one hero: a light linked to a receiver collection lights only the hero, proven by two pixel renders in one pass." loading="lazy" decoding="async" />
         </a>
         <div class="card-body">
           <h2><a href="light-link-studio/">light-link-studio</a></h2>
-          <p class="teaches">One key, one hero: a light linked to a receiver collection lights only the hero, proven by two pixel renders in one pass. Linked: 4.0x luminance ratio; unlinked in the same check: the decoy rises 244% while the hero holds at 0.0% drift.</p>
-          <p class="witnesses"><span class="tag">witnesses</span> The API is obj.light_linking on the light OBJECT (ld.light_linking is an AttributeError). Luminance is sampled at each sphere&#x27;s projected center; EEVEE Next honors linking too (5.5x on 4.5, 5.9x on 5.1), Cycles pinned for deterministic samples.</p>
+          <p class="teaches">One key, one hero: a light linked to a receiver collection lights only the hero, proven by two pixel renders in one pass. Linked: 3.6x luminance ratio; unlinked in the same check: the decoy rises 206% while the hero holds at 0.0% drift.</p>
+          <p class="witnesses"><span class="tag">witnesses</span> The API is obj.light_linking on the light OBJECT (ld.light_linking is an AttributeError). Luminance is sampled at each sphere&#x27;s projected center; EEVEE honors linking too (probe-measured 3.7x on 4.5.11 EEVEE Next and 5.1.2 EEVEE), Cycles pinned for deterministic samples.</p>
           <a class="card-link" href="light-link-studio/">View example <span aria-hidden="true">&rarr;</span></a>
         </div>
       </article>

docs/gallery/assets/vse-gamma-cross-hero.webp

@@ -361,12 +361,13 @@
     {
       "name": "light-link-studio",
       "dir": "examples/light-link-studio",
-      "teaches": "One key, one hero: a light linked to a receiver collection lights only the hero, proven by two pixel renders in one pass. Linked: 4.0x luminance ratio; unlinked in the same check: the decoy rises 244% while the hero holds at 0.0% drift.",
-      "witnessesFix": "The API is obj.light_linking on the light OBJECT (ld.light_linking is an AttributeError). Luminance is sampled at each sphere's projected center; EEVEE Next honors linking too (5.5x on 4.5, 5.9x on 5.1), Cycles pinned for deterministic samples.",
+      "teaches": "One key, one hero: a light linked to a receiver collection lights only the hero, proven by two pixel renders in one pass. Linked: 3.6x luminance ratio; unlinked in the same check: the decoy rises 206% while the hero holds at 0.0% drift.",
+      "witnessesFix": "The API is obj.light_linking on the light OBJECT (ld.light_linking is an AttributeError). Luminance is sampled at each sphere's projected center; EEVEE honors linking too (probe-measured 3.7x on 4.5.11 EEVEE Next and 5.1.2 EEVEE), Cycles pinned for deterministic samples.",
       "hero": "docs/gallery/assets/light-link-studio-hero.webp",
       "preview": "examples/light-link-studio/preview.webp",
       "tags": [
-        "rendering"
+        "rendering",
+        "objects"
       ]
     }
   ]

docs/gallery/contact-sheets/light-link-studio-contact-sheet.webp

@@ -7,36 +7,43 @@ most often misses or misaddresses.
 
 **What it witnesses:** the light-linking contract and the traps around it.
 
-1. **The API is on the light OBJECT, not the Light datablock.**
-   `ld.light_linking` is an AttributeError on both versions (verified); the
-   path is `obj.light_linking.receiver_collection` (ObjectLightLinking, with
-   `blocker_collection` alongside). Assignment reads back through the API.
-2. **Linked, the key lights only the receiver collection.** Render one:
-   hero well-lit, decoy at the fill floor — hero/decoy luminance ratio
-   **4.0x** (gate ≥ 3x), measured at each sphere's *projected* center so
-   framing can't move the sample off the subject.
-3. **Unlinked (same check), the restriction vanishes surgically.** Render
-   two: the decoy rises **244–251%** while the hero drifts **0.0%** — the
-   link restricts without dimming anything else. The shipped check therefore
-   demonstrates both states, not just one.
-4. **The engine note, verified rather than assumed.** Light linking also
-   works on EEVEE Next — measured 5.5x linked ratio on 4.5.11 EEVEE Next and
-   5.9x on 5.1.2 EEVEE, matching Cycles within sampling noise. The check
-   still pins Cycles for deterministic tiny-sample CPU renders; luminance
-   gates need `view_transform = 'Standard'` (AgX compresses the ratios).
+- **The API is on the light OBJECT, not the Light datablock.**
+  `ld.light_linking` is an AttributeError on both versions (verified); the
+  path is `obj.light_linking.receiver_collection` (ObjectLightLinking, with
+  `blocker_collection` alongside). Assignment reads back through the API.
+- **Linked, the key lights only the receiver collection.** Render one:
+  hero well-lit, decoy at the fill floor — hero/decoy luminance ratio
+  **3.6x** (gate ≥ 3x), measured at each sphere's **projected** center so
+  framing can't move the sample off the subject.
+- **Unlinked (same check), the restriction vanishes surgically.** Render
+  two: the decoy rises **206–213%** while the hero drifts **0.0%** — the
+  link restricts without dimming anything else. The shipped check therefore
+  demonstrates both states, not just one. The rise figure is noisy by
+  construction: the decoy's unlit base sits near the fill floor, so small
+  absolute shifts in that base swing the relative rise between versions and
+  runs — the gate is a conservative ≥ 50%.
+- **The engine note, verified rather than assumed.** Light linking also
+  works on EEVEE — measured with an EEVEE luminance probe (the shipped
+  scene with `render.engine` swapped: `BLENDER_EEVEE` on 5.x,
+  `BLENDER_EEVEE_NEXT` on 4.x) at **3.7x** linked ratio on both 4.5.11
+  EEVEE Next and 5.1.2 EEVEE, matching Cycles within sampling noise. The
+  shipped check still pins Cycles for deterministic tiny-sample CPU
+  renders; luminance gates need `view_transform = 'Standard'` (AgX
+  compresses the ratios).
 
 **What each check catches on failure:** inverting the link to the decoy
-collection (exit 6 — hero drops to 0.179, ratio collapses to 0.22x), an
+collection (exit 6 — hero/decoy ratio collapses to 0.39x), an
 RNA move of the API onto the Light datablock (exit 3, guarded), a lost
 assignment read-back (exit 5), a link that doesn't restrict (exit 7, rise
 below 50%), and a non-surgical restriction (exit 8, hero drift above 5%).
 
 **Version witness:** ObjectLightLinking API and the measured ratios match on
-Blender 4.5 LTS and 5.1 (4.0x linked both; rise 244% vs 251% within sampling
-noise).
+Blender 4.5 LTS and 5.1 (3.4x vs 3.6x linked; rise 213% vs 206% — inside the
+rise noise described above).
 
 The render is the contract at a glance: the blazing orange hero over the
-LINKED plaque, the cold steel decoy over UNLINKED — one key, one hero.
+LINKED plaque, the cold steel decoy over UNLINKED, a warm pool raking the
+wall behind them — one key, one hero.
 
 ## Run