Add Ralph Wiggum agent setup and project specifications

- Add project constitution with vision, principles, and autonomy settings
- Add 15 feature specifications covering full app scope
- Configure agent entry points (AGENTS.md, CLAUDE.md)
- Add build prompt and speckit command for spec creation
- Include comprehensive .gitignore for iOS development

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

specs/02-data-model.md

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+# Data Model & Edit Operations
+
+## Description
+Implement the non-destructive editing data model with operation stack for full undo/redo support.
+
+## Acceptance Criteria
+- [ ] `EditOperation` enum implemented with cases: `.mask`, `.inpaint`, `.adjustment`
+- [ ] `MaskOperation` struct with: id, toolType, maskData (compressed R8), timestamp
+- [ ] `InpaintOperation` struct with: id, maskOperationId, patchRadius, featherAmount, timestamp
+- [ ] `ToolType` enum with cases: `.person`, `.object`, `.wire`, `.brush`
+- [ ] `Project` model that holds:
+  - Original image reference (PHAsset identifier or embedded Data)
+  - Operation stack (array of EditOperation)
+  - Current stack position for undo/redo
+- [ ] All models conform to `Codable`
+- [ ] Undo operation decrements stack position
+- [ ] Redo operation increments stack position
+- [ ] Project can be serialized to/from JSON
+- [ ] Unit tests for operation stack logic
+
+## Technical Notes
+- Original image is NEVER modified
+- Mask data should be compressed (R8 texture format)
+- Store PHAsset `localIdentifier` for Photos-sourced images
+- Store embedded image data for Files-imported images
+- Cached previews should set `isExcludedFromBackup = true`
+
+## Edge Cases
+- Undo at beginning of stack: no-op, return false
+- Redo at end of stack: no-op, return false
+- Empty operation stack: valid state, shows original image