fix(desktop): usability wiring — rubric fixture ids + cell-jump listener + artifact seed + empty panel

+ docs/integration-final-check.md — 5-item integration gate PASS

examples/desktop/scripts/regen-artifact-board-seed.js

@@ -0,0 +1,27 @@
+#!/usr/bin/env node
+// Regenerates src/renderer/artifact-board-seed.js from
+// docs/artifact-board-fixture.json. Renderer runs at file:// so we inline
+// the fixture instead of fetch().
+//
+// Usage: node scripts/regen-artifact-board-seed.js
+
+'use strict'
+const fs = require('fs')
+const path = require('path')
+
+const root = path.resolve(__dirname, '..')
+const src = path.join(root, 'docs', 'artifact-board-fixture.json')
+const dst = path.join(root, 'src', 'renderer', 'artifact-board-seed.js')
+
+const j = JSON.parse(fs.readFileSync(src, 'utf8'))
+const body = "// Auto-inlined artifact-board fixture. Renderer runs at file:// so we\n" +
+  "// inline docs/artifact-board-fixture.json here instead of relying on fetch().\n" +
+  "// To refresh: node scripts/regen-artifact-board-seed.js\n" +
+  "\n" +
+  "'use strict'\n" +
+  ";(function () {\n" +
+  "  if (typeof window === 'undefined') return\n" +
+  "  window.__dshArtifactBoardSeed = " + JSON.stringify(j, null, 2) + ";\n" +
+  "})()\n"
+fs.writeFileSync(dst, body)
+console.log('wrote', dst, '(' + body.length + ' bytes)')

examples/desktop/scripts/regen-rubric-fusion-seed.js

@@ -0,0 +1,27 @@
+#!/usr/bin/env node
+// Regenerates src/renderer/rubric-fusion-seed.js from
+// docs/rubric-fusion-fixture.json. Renderer runs at file:// so we inline
+// the fixture instead of fetch().
+//
+// Usage: node scripts/regen-rubric-fusion-seed.js
+
+'use strict'
+const fs = require('fs')
+const path = require('path')
+
+const root = path.resolve(__dirname, '..')
+const src = path.join(root, 'docs', 'rubric-fusion-fixture.json')
+const dst = path.join(root, 'src', 'renderer', 'rubric-fusion-seed.js')
+
+const j = JSON.parse(fs.readFileSync(src, 'utf8'))
+const body = "// Auto-inlined fusion fixture. Renderer runs at file:// so we inline\n" +
+  "// docs/rubric-fusion-fixture.json here instead of relying on fetch().\n" +
+  "// To refresh: node scripts/regen-rubric-fusion-seed.js\n" +
+  "\n" +
+  "'use strict'\n" +
+  ";(function () {\n" +
+  "  if (typeof window === 'undefined') return\n" +
+  "  window.__dshRubricFusionSeed = " + JSON.stringify(j, null, 2) + ";\n" +
+  "})()\n"
+fs.writeFileSync(dst, body)
+console.log('wrote', dst, '(' + body.length + ' bytes)')