Polish movement hall interiors: clear doors and bay columns, tone floors and windows.

Document hang keep-outs and period-module fixes; leave columns fixed while packing frames into gaps.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/__tests__/abex-loft-interior.test.js

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+/**
+ * Abstract Expressionism loft must read as an open painter's loft, not a barred cell.
+ *   node --test server/__tests__/abex-loft-interior.test.js
+ */
+const { describe, it } = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+const path = require('node:path');
+
+const ROOT = path.join(__dirname, '..', '..');
+const STYLES = fs.readFileSync(path.join(ROOT, 'client/src/data/movement-interior-styles.ts'), 'utf8');
+const DETAILS = fs.readFileSync(path.join(ROOT, 'client/src/components/hall-details/modernism.tsx'), 'utf8');
+
+function loftStyleBlock() {
+  const start = STYLES.indexOf("'abstract-expressionist-loft'");
+  assert.ok(start >= 0, 'abstract-expressionist-loft style must exist');
+  const next = STYLES.indexOf('mk(', start + 1);
+  return STYLES.slice(start, next > start ? next : undefined);
+}
+
+function loftDetailsBlock() {
+  const start = DETAILS.indexOf('export function LoftDetails');
+  assert.ok(start >= 0, 'LoftDetails must exist');
+  const next = DETAILS.indexOf('export function ', start + 1);
+  return DETAILS.slice(start, next > start ? next : undefined);
+}
+
+describe('Abstract Expressionism loft — open studio, no prison vibe', () => {
+  it('does not use factory windows (iron-bar grid)', () => {
+    const block = loftStyleBlock();
+    assert.doesNotMatch(block, /style: 'factory'/);
+    assert.match(block, /style: 'picture'|style: 'clerestory'|style: 'skylight'/);
+  });
+
+  it('uses open painted / warm loft surfaces, not dingy cell brick-only', () => {
+    const block = loftStyleBlock();
+    assert.match(block, /north-light|painter|studio|loft/i);
+    assert.doesNotMatch(block, /north-light factory windows/);
+  });
+
+  it('LoftDetails has no cast-iron columns or sprinkler prison pipe', () => {
+    const block = loftDetailsBlock();
+    assert.doesNotMatch(block, /Cast-iron|Sprinkler main|cast-iron/);
+    assert.match(block, /timber|wood|joist|painter|studio/i);
+  });
+});