feat(gallery): supported-version line and a copyable falsifier on example detail pages

Each example detail page now shows, from examples/index.json:
- "runs on": the smoked series at or above the row's min_version
  (4.5 LTS · 5.1 · 5.2 LTS), with "skips below X" when the floor is
  above 4.5
- "falsify it": the first exit-code falsifier as a copyable command
  under the run line, with the exit it must produce (and its own
  min_version when it has one)

Showcase pieces have no index row and are unchanged apart from the
shared detail JS, which now wires both copy buttons. 56 example pages
carry both lines; check_site_links passes (139 pages, 0 failures).

Closes #377

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: TMHSDigital

docs/gallery/anvil/index.html

@@ -269,10 +269,12 @@ <h3><a class="stretch" href="../wooden-barrel/">Wooden Barrel</a></h3>
           });
         });
       }
-      var copy = document.getElementById('copyRun');
-      if (copy) {
-        wireCopy(copy, function () { return document.getElementById('runCmd').textContent; });
-      }
+      [['copyRun', 'runCmd'], ['copyFalsify', 'falsifyCmd']].forEach(function (ids) {
+        var copy = document.getElementById(ids[0]);
+        if (copy) {
+          wireCopy(copy, function () { return document.getElementById(ids[1]).textContent; });
+        }
+      });
       Array.prototype.forEach.call(document.querySelectorAll('.md pre'), function (block) {
         var wrap = block;
         if (block.tagName === 'PRE') {

docs/gallery/apothecary-shelf/index.html

@@ -274,10 +274,12 @@ <h3><a class="stretch" href="../wooden-barrel/">Wooden Barrel</a></h3>
           });
         });
       }
-      var copy = document.getElementById('copyRun');
-      if (copy) {
-        wireCopy(copy, function () { return document.getElementById('runCmd').textContent; });
-      }
+      [['copyRun', 'runCmd'], ['copyFalsify', 'falsifyCmd']].forEach(function (ids) {
+        var copy = document.getElementById(ids[0]);
+        if (copy) {
+          wireCopy(copy, function () { return document.getElementById(ids[1]).textContent; });
+        }
+      });
       Array.prototype.forEach.call(document.querySelectorAll('.md pre'), function (block) {
         var wrap = block;
         if (block.tagName === 'PRE') {

docs/gallery/archery-target/index.html

@@ -276,10 +276,12 @@ <h3><a class="stretch" href="../wooden-barrel/">Wooden Barrel</a></h3>
           });
         });
       }
-      var copy = document.getElementById('copyRun');
-      if (copy) {
-        wireCopy(copy, function () { return document.getElementById('runCmd').textContent; });
-      }
+      [['copyRun', 'runCmd'], ['copyFalsify', 'falsifyCmd']].forEach(function (ids) {
+        var copy = document.getElementById(ids[0]);
+        if (copy) {
+          wireCopy(copy, function () { return document.getElementById(ids[1]).textContent; });
+        }
+      });
       Array.prototype.forEach.call(document.querySelectorAll('.md pre'), function (block) {
         var wrap = block;
         if (block.tagName === 'PRE') {

docs/gallery/armature-bend/index.html

@@ -55,10 +55,16 @@ <h1>Armature Bend</h1>
     <p class="zoom-hint">Rendered headless by the example itself. Select it to enlarge.</p>
     <div class="callout"><span class="tag">witnesses</span> edit_bones exists only in edit mode (empty in object mode), vertex groups bind to bones strictly by name, and the armature modifier is exactly linear blend skinning: every evaluated vertex must equal Σ wᵢ·(pose_bone.matrix @ bone.matrix_local.inverted()) @ rest, root ring pinned, tip deflected — a straight tube fails.</div>
     <p class="taglist"><span class="tag">tags</span> <a href="../#tag=armature">armature</a> <a href="../#tag=depsgraph">depsgraph</a></p>
+    <p class="taglist"><span class="tag">runs on</span> 4.5 LTS &middot; 5.1 &middot; 5.2 LTS</p>
     <div class="runline">
       <pre id="runCmd" tabindex="0">blender --background --python examples/armature-bend/armature_bend.py --</pre>
       <button class="copy-btn" id="copyRun" type="button">Copy</button>
     </div>
+    <p class="taglist"><span class="tag">falsify it</span> Breaks the contract on purpose and must exit 8</p>
+    <div class="runline falsify">
+      <pre id="falsifyCmd" tabindex="0">blender --background --python examples/armature-bend/armature_bend.py -- --zero-curl</pre>
+      <button class="copy-btn" id="copyFalsify" type="button">Copy</button>
+    </div>
     <nav class="jumpnav" aria-label="On this page"><span class="tag">jump to</span> <a href="#run">Run</a> <a href="#exit-codes">Exit codes</a> <a href="#source">Source</a> <a href="#related">Related</a></nav>
     <section class="detail-section md">
 <p>A runnable example that rigs a tapered, ribbed bellows hose with a four-bone armature chain — <code>edit_bones</code> construction, name-bound vertex groups with smoothstep blend zones, a posed curl — and checks the depsgraph-evaluated result against closed-form linear blend skinning, following <a href="https://github.com/TMHSDigital/Blender-Developer-Tools/tree/main/skills/mesh-editing-and-bmesh/SKILL.md"><code>mesh-editing-and-bmesh</code></a> and <a href="https://github.com/TMHSDigital/Blender-Developer-Tools/tree/main/skills/depsgraph-and-evaluated-data/SKILL.md"><code>depsgraph-and-evaluated-data</code></a>.</p>
@@ -250,10 +256,12 @@ <h3><a class="stretch" href="../lod-decimate-chain/">LOD Decimate Chain</a></h3>
           });
         });
       }
-      var copy = document.getElementById('copyRun');
-      if (copy) {
-        wireCopy(copy, function () { return document.getElementById('runCmd').textContent; });
-      }
+      [['copyRun', 'runCmd'], ['copyFalsify', 'falsifyCmd']].forEach(function (ids) {
+        var copy = document.getElementById(ids[0]);
+        if (copy) {
+          wireCopy(copy, function () { return document.getElementById(ids[1]).textContent; });
+        }
+      });
       Array.prototype.forEach.call(document.querySelectorAll('.md pre'), function (block) {
         var wrap = block;
         if (block.tagName === 'PRE') {

docs/gallery/attribute-domain-shear/index.html

@@ -55,10 +55,16 @@ <h1>Attribute Domain Shear</h1>
     <p class="zoom-hint">Rendered headless by the example itself. Select it to enlarge.</p>
     <div class="callout"><span class="tag">witnesses</span> Authoring per-face colors into a POINT-domain attribute overwrites shared vertices once per neighbor; the last write wins and intended colors shear across every shared vertex.</div>
     <p class="taglist"><span class="tag">tags</span> <a href="../#tag=attributes">attributes</a> <a href="../#tag=mesh">mesh</a> <a href="../#tag=rendering">rendering</a></p>
+    <p class="taglist"><span class="tag">runs on</span> 4.5 LTS &middot; 5.1 &middot; 5.2 LTS</p>
     <div class="runline">
       <pre id="runCmd" tabindex="0">blender --background --python examples/attribute-domain-shear/attribute_domain_shear.py --</pre>
       <button class="copy-btn" id="copyRun" type="button">Copy</button>
     </div>
+    <p class="taglist"><span class="tag">falsify it</span> Breaks the contract on purpose and must exit 5</p>
+    <div class="runline falsify">
+      <pre id="falsifyCmd" tabindex="0">blender --background --python examples/attribute-domain-shear/attribute_domain_shear.py -- --no-overwrite</pre>
+      <button class="copy-btn" id="copyFalsify" type="button">Copy</button>
+    </div>
     <nav class="jumpnav" aria-label="On this page"><span class="tag">jump to</span> <a href="#run">Run</a> <a href="#exit-codes">Exit codes</a> <a href="#source">Source</a> <a href="#related">Related</a></nav>
     <section class="detail-section md">
 <p>A runnable example that witnesses what <code>POINT</code> versus <code>CORNER</code> <strong>means</strong> on <code>Mesh.color_attributes</code> once the mesh has shared vertices — the domain is not a storage detail, it decides where colors can live. Companion to <a href="https://github.com/TMHSDigital/Blender-Developer-Tools/tree/main/examples/color-attribute-wheel"><code>color-attribute-wheel</code></a> (which covers <code>color_attributes.new()</code> versus the deprecated alias, CORNER sizing == <code>len(loops)</code>, and <code>active_color</code>); this example covers the trap one step later, when AI code knows the API exists but authors per-face colors into a <code>POINT</code>-domain attribute.</p>
@@ -249,10 +255,12 @@ <h3><a class="stretch" href="../custom-normals-shade/">Custom Normals Shade</a><
           });
         });
       }
-      var copy = document.getElementById('copyRun');
-      if (copy) {
-        wireCopy(copy, function () { return document.getElementById('runCmd').textContent; });
-      }
+      [['copyRun', 'runCmd'], ['copyFalsify', 'falsifyCmd']].forEach(function (ids) {
+        var copy = document.getElementById(ids[0]);
+        if (copy) {
+          wireCopy(copy, function () { return document.getElementById(ids[1]).textContent; });
+        }
+      });
       Array.prototype.forEach.call(document.querySelectorAll('.md pre'), function (block) {
         var wrap = block;
         if (block.tagName === 'PRE') {

docs/gallery/bake-normal-high-to-low/index.html

@@ -55,10 +55,16 @@ <h1>Bake Normal High To Low</h1>
     <p class="zoom-hint">Rendered headless by the example itself. Select it to enlarge.</p>
     <div class="callout"><span class="tag">witnesses</span> Statistical gates not byte-identity: detail frac 0.7211 / MAD 0.09356 vs flat 0.0000 / 0.00277; --flat-source exits 5; type=NORMAL not bake_type; RNA identical on 4.5.11, 5.1.2, 5.2.1</div>
     <p class="taglist"><span class="tag">tags</span> <a href="../#tag=mesh">mesh</a></p>
+    <p class="taglist"><span class="tag">runs on</span> 4.5 LTS &middot; 5.1 &middot; 5.2 LTS</p>
     <div class="runline">
       <pre id="runCmd" tabindex="0">blender --background --python examples/bake-normal-high-to-low/bake_normal_high_to_low.py --</pre>
       <button class="copy-btn" id="copyRun" type="button">Copy</button>
     </div>
+    <p class="taglist"><span class="tag">falsify it</span> Breaks the contract on purpose and must exit 5</p>
+    <div class="runline falsify">
+      <pre id="falsifyCmd" tabindex="0">blender --background --python examples/bake-normal-high-to-low/bake_normal_high_to_low.py -- --flat-source</pre>
+      <button class="copy-btn" id="copyFalsify" type="button">Copy</button>
+    </div>
     <nav class="jumpnav" aria-label="On this page"><span class="tag">jump to</span> <a href="#run">Run</a> <a href="#exit-codes">Exit codes</a> <a href="#source">Source</a> <a href="#related">Related</a></nav>
     <section class="detail-section md">
 <p>A runnable example that cage-bakes a ribbed bronze hatch plate onto a <code>DECIMATE COLLAPSE</code> LOD and asserts the tangent-space normal map carries measurable surface detail — following <a href="https://github.com/TMHSDigital/Blender-Developer-Tools/tree/main/skills/bake-high-to-low/SKILL.md"><code>bake-high-to-low</code></a>.</p>
@@ -256,10 +262,12 @@ <h3><a class="stretch" href="../shape-key-blend/">Shape Key Blend</a></h3>
           });
         });
       }
-      var copy = document.getElementById('copyRun');
-      if (copy) {
-        wireCopy(copy, function () { return document.getElementById('runCmd').textContent; });
-      }
+      [['copyRun', 'runCmd'], ['copyFalsify', 'falsifyCmd']].forEach(function (ids) {
+        var copy = document.getElementById(ids[0]);
+        if (copy) {
+          wireCopy(copy, function () { return document.getElementById(ids[1]).textContent; });
+        }
+      });
       Array.prototype.forEach.call(document.querySelectorAll('.md pre'), function (block) {
         var wrap = block;
         if (block.tagName === 'PRE') {

docs/gallery/bamboo-clump/index.html

@@ -280,10 +280,12 @@ <h3><a class="stretch" href="../wooden-barrel/">Wooden Barrel</a></h3>
           });
         });
       }
-      var copy = document.getElementById('copyRun');
-      if (copy) {
-        wireCopy(copy, function () { return document.getElementById('runCmd').textContent; });
-      }
+      [['copyRun', 'runCmd'], ['copyFalsify', 'falsifyCmd']].forEach(function (ids) {
+        var copy = document.getElementById(ids[0]);
+        if (copy) {
+          wireCopy(copy, function () { return document.getElementById(ids[1]).textContent; });
+        }
+      });
       Array.prototype.forEach.call(document.querySelectorAll('.md pre'), function (block) {
         var wrap = block;
         if (block.tagName === 'PRE') {

docs/gallery/basketball-hoop/index.html

@@ -275,10 +275,12 @@ <h3><a class="stretch" href="../wooden-barrel/">Wooden Barrel</a></h3>
           });
         });
       }
-      var copy = document.getElementById('copyRun');
-      if (copy) {
-        wireCopy(copy, function () { return document.getElementById('runCmd').textContent; });
-      }
+      [['copyRun', 'runCmd'], ['copyFalsify', 'falsifyCmd']].forEach(function (ids) {
+        var copy = document.getElementById(ids[0]);
+        if (copy) {
+          wireCopy(copy, function () { return document.getElementById(ids[1]).textContent; });
+        }
+      });
       Array.prototype.forEach.call(document.querySelectorAll('.md pre'), function (block) {
         var wrap = block;
         if (block.tagName === 'PRE') {

docs/gallery/bmesh-gear/index.html

@@ -55,10 +55,16 @@ <h1>BMesh Gear</h1>
     <p class="zoom-hint">Rendered headless by the example itself. Select it to enlarge.</p>
     <div class="callout"><span class="tag">witnesses</span> Parametric bmesh topology is exactly predictable: verts, edges, and faces match their closed forms, and every edge borders exactly two faces (watertight).</div>
     <p class="taglist"><span class="tag">tags</span> <a href="../#tag=mesh">mesh</a> <a href="../#tag=bmesh">bmesh</a></p>
+    <p class="taglist"><span class="tag">runs on</span> 4.5 LTS &middot; 5.1 &middot; 5.2 LTS</p>
     <div class="runline">
       <pre id="runCmd" tabindex="0">blender --background --python examples/bmesh-gear/bmesh_gear.py --</pre>
       <button class="copy-btn" id="copyRun" type="button">Copy</button>
     </div>
+    <p class="taglist"><span class="tag">falsify it</span> Breaks the contract on purpose and must exit 3</p>
+    <div class="runline falsify">
+      <pre id="falsifyCmd" tabindex="0">blender --background --python examples/bmesh-gear/bmesh_gear.py -- --no-extrude</pre>
+      <button class="copy-btn" id="copyFalsify" type="button">Copy</button>
+    </div>
     <nav class="jumpnav" aria-label="On this page"><span class="tag">jump to</span> <a href="#run">Run</a> <a href="#exit-codes">Exit codes</a> <a href="#source">Source</a> <a href="#related">Related</a></nav>
     <section class="detail-section md">
 <p>A runnable example that builds a 14-tooth gear entirely with bmesh — profile ring, face, <code>extrude_face_region</code>, translate — following the ownership contract from <a href="https://github.com/TMHSDigital/Blender-Developer-Tools/tree/main/skills/mesh-editing-and-bmesh/SKILL.md"><code>mesh-editing-and-bmesh</code></a> and the <a href="https://github.com/TMHSDigital/Blender-Developer-Tools/tree/main/rules/always-free-bmesh.mdc"><code>always-free-bmesh</code></a> rule: every <code>bmesh.new()</code> is paired with <code>bm.free()</code> in a <code>try</code>/<code>finally</code>.</p>
@@ -249,10 +255,12 @@ <h3><a class="stretch" href="../mesh-hygiene-audit/">Mesh Hygiene Audit</a></h3>
           });
         });
       }
-      var copy = document.getElementById('copyRun');
-      if (copy) {
-        wireCopy(copy, function () { return document.getElementById('runCmd').textContent; });
-      }
+      [['copyRun', 'runCmd'], ['copyFalsify', 'falsifyCmd']].forEach(function (ids) {
+        var copy = document.getElementById(ids[0]);
+        if (copy) {
+          wireCopy(copy, function () { return document.getElementById(ids[1]).textContent; });
+        }
+      });
       Array.prototype.forEach.call(document.querySelectorAll('.md pre'), function (block) {
         var wrap = block;
         if (block.tagName === 'PRE') {

docs/gallery/book-trolley/index.html

@@ -274,10 +274,12 @@ <h3><a class="stretch" href="../wooden-barrel/">Wooden Barrel</a></h3>
           });
         });
       }
-      var copy = document.getElementById('copyRun');
-      if (copy) {
-        wireCopy(copy, function () { return document.getElementById('runCmd').textContent; });
-      }
+      [['copyRun', 'runCmd'], ['copyFalsify', 'falsifyCmd']].forEach(function (ids) {
+        var copy = document.getElementById(ids[0]);
+        if (copy) {
+          wireCopy(copy, function () { return document.getElementById(ids[1]).textContent; });
+        }
+      });
       Array.prototype.forEach.call(document.querySelectorAll('.md pre'), function (block) {
         var wrap = block;
         if (block.tagName === 'PRE') {