fix(dewarp): drop unreliable auto-dewarp; batch is perspective-only v1.100 The v1.099 curl gate misfired: on a folded two-receipt page UVDoc added a vertical S-wave that the horizontal-line curl metric could not detect, so the gate accepted a worse result. Auto-dewarp flattens some docs but occasionally breaks others, and a reliable "apply only when it helps" metric proved hard (horizontal-only curl misses vertical waviness). - ScanPipeline (batch / KakaoTalk multi-share): perspective crop only, no UVDoc. Predictable, artifact-free. Mild curl may remain but no waves. - EditorFlatten: back to toggle-gated — UVDoc applies only when the "펴기" toggle is on (force); default is perspective only. - Removed AutoDewarp (the curl-gate helper), now unused. Trade-off chosen deliberately: a mild residual curve is acceptable; a wave/skew artifact is not. Curved single docs can still be flattened manually via the editor "펴기" toggle where the user sees the result. Constraint: UVDoc never runs automatically; only the explicit "펴기" toggle triggers it. Confidence: high Scope-risk: module Reversibility: trivial Directive: if automatic flattening is revisited, the gate must measure both horizontal and vertical line straightness and reject UVDoc when either worsens. Tested: assembleDebug + testDebugUnitTest exit=0 (22 tests). Not-tested: on-device re-scan of the folded-receipt page. Related: v1.099 (auto gate, reverted), user folded-receipt wave report 🐙 Autopus