feat: Add Studio UI, intake system, and extractor improvements

Dashboard:
- Add Studio page with drag-drop model upload and Claude chat
- Add intake system for study creation workflow
- Improve session manager and context builder
- Add intake API routes and frontend components

Optimization Engine:
- Add CLI module for command-line operations
- Add intake module for study preprocessing
- Add validation module with gate checks
- Improve Zernike extractor documentation
- Update spec models with better validation
- Enhance solve_simulation robustness

Documentation:
- Add ATOMIZER_STUDIO.md planning doc
- Add ATOMIZER_UX_SYSTEM.md for UX patterns
- Update extractor library docs
- Add study-readme-generator skill

Tools:
- Add test scripts for extraction validation
- Add Zernike recentering test

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

optimization_engine/extractors/extract_zernike.py

@@ -473,23 +473,33 @@ def extract_displacements_by_subcase(
         ngt = darr.node_gridtype.astype(int)
         node_ids = ngt if ngt.ndim == 1 else ngt[:, 0]
 
-        # Try to identify subcase from subtitle or isubcase
+        # Try to identify subcase from subtitle, label, or isubcase
         subtitle = getattr(darr, 'subtitle', None)
+        op2_label = getattr(darr, 'label', None)
         isubcase = getattr(darr, 'isubcase', None)
 
-        # Extract numeric from subtitle
-        label = None
-        if isinstance(subtitle, str):
-            import re
+        # Extract numeric from subtitle first, then label, then isubcase
+        import re
+        subcase_id = None
+
+        # Priority 1: subtitle (e.g., "GRAVITY 20 DEG")
+        if isinstance(subtitle, str) and subtitle.strip():
             m = re.search(r'-?\d+', subtitle)
             if m:
-                label = m.group(0)
+                subcase_id = m.group(0)
 
-        if label is None and isinstance(isubcase, int):
-            label = str(isubcase)
+        # Priority 2: label field (e.g., "90    SUBCASE 1")
+        if subcase_id is None and isinstance(op2_label, str) and op2_label.strip():
+            m = re.search(r'-?\d+', op2_label)
+            if m:
+                subcase_id = m.group(0)
 
-        if label:
-            result[label] = {
+        # Priority 3: isubcase number
+        if subcase_id is None and isinstance(isubcase, int):
+            subcase_id = str(isubcase)
+
+        if subcase_id:
+            result[subcase_id] = {
                 'node_ids': node_ids.astype(int),
                 'disp': dmat.copy()
             }