Initial public release

openspec/changes/archive/2026-09-17-auto-crop-panorama-input/tasks.md

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+## 1. Crop Bounds
+
+- [x] 1.1 Add a common helper that returns the largest deterministic centered exact 2:1 integer-pixel bounds and rejects dimensions that cannot produce a positive crop
+- [x] 1.2 Add focused tests for exact, wide, tall, odd-width, uneven-margin, and unusably small dimension cases
+
+## 2. Panorama Conversion
+
+- [x] 2.1 Update Convert to Panorama to keep animated-image validation, compute the crop bounds, and pass them into the shared material color input preparation
+- [x] 2.2 Report one crop warning with original and cropped dimensions only when pixels are removed
+- [x] 2.3 Update panorama operator tests to verify arbitrary aspect ratios submit cropped color and analysis inputs, exact 2:1 input stays unchanged, and unsupported sources remain rejected
+
+## 3. Verification
+
+- [x] 3.1 Run the related common image and panorama conversion test suites and confirm they pass
+- [x] 3.2 Inspect the final diff and search the panorama conversion path to confirm the strict 2:1 rejection and stale expectations are removed