fix: Restore missing braces in simpleYAMLParse, update to v0.2

Fix two missing closing braces in simpleYAMLParse() that caused a
JS parse error breaking all page functionality (Import YAML button
did nothing). The braces for `if (i < lines.length)` were dropped
when the comment-skipping fix was applied in parseBlock and parseList.

Also:
- Update version v1 → v0.2 and date to 2026-02-28
- Fix quickstart: arena dropdown now "G4.1 (2×12)" (CCW removed)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: mbreiser

experiment_designer.html

@@ -720,7 +720,7 @@ <h1>Experiment Designer</h1>
 
 <!-- Footer -->
 <div class="app-footer">
-    <p><a href="https://github.com/reiserlab/webDisplayTools" target="_blank">Reiser Lab</a> | Experiment Designer v1 | 2026-02-09 21:09 ET</p>
+    <p><a href="https://github.com/reiserlab/webDisplayTools" target="_blank">Reiser Lab</a> | Experiment Designer v0.2 | 2026-02-28</p>
 </div>
 
 <!-- Hidden file input for import -->
@@ -1842,6 +1842,7 @@ <h1>Experiment Designer</h1>
                             obj[key] = parseBlock(nextIndent);
                         }
                     }
+                }
             } else {
                 obj[key] = parseValue(valRaw);
                 i++;
@@ -1895,6 +1896,7 @@ <h1>Experiment Designer</h1>
                                         item[subKey] = parseBlock(nIndent);
                                     }
                                 }
+                            }
                         } else {
                             item[subKey] = parseValue(subVal);
                             i++;

experiment_designer_quickstart.html

@@ -254,7 +254,7 @@ <h2>Walkthrough: create an optomotor protocol</h2>
         <div class="step">
             <span class="step-number">2</span>
             <p><strong>Choose arena configuration</strong> (left panel, Arena section)</p>
-            <p>Select <code>G4.1 CCW (2&times;12) - 360&deg;</code> from the dropdown.</p>
+            <p>Select <code>G4.1 (2&times;12) - 360&deg;</code> from the dropdown.</p>
             <p class="hint">The summary below the dropdown confirms: G4.1 &mdash; 2 rows &times; 12 cols</p>
         </div>