secure_watermark 0.3.0

Visible & invisible watermarking for Flutter. Visible overlays deter screenshots; forensic (spread-spectrum LSB) watermarks embed traceable data in image pixels for post-leak identification.

0.3.0

• feat: example app with two-tab demo (visible + forensic watermarks)
• docs: added GIF showcases to README for both visible and forensic features
• docs: added badges (pub version, points, popularity, likes, license, lints)
• docs: added example app section with run instructions
• fix: example test updated to match new app structure

0.2.0

• feat: forensic (invisible) watermarking via spread-spectrum LSB embedding
• feat: ForensicWatermark static utility with embed() and extract() methods
• feat: ForensicConfig immutable configuration (redundancy, bitsPerChannel)
• feat: ForensicWatermarkImage widget with background isolate processing
• feat: CLI tools — dart run secure_watermark:embed / extract
• feat: DJB2-seeded PRNG with Set-based collision avoidance for deterministic pixel selection
• feat: majority voting across redundancy copies for error correction
• feat: magic number (0x574D) validation for wrong-key detection
• deps: added image ^4.0.0 and args ^2.4.0

0.1.0

• feat: initial release
• feat: Watermark widget with Stack + IgnorePointer + RepaintBoundary overlay
• feat: WatermarkStyle immutable config with opacity, rotation, spacing, staggered mode
• feat: WatermarkPainter using ParagraphBuilder for efficient text tiling
• feat: diagonal tiling with staggered rows (brick pattern) for crop resistance
• feat: enabled flag to toggle watermark without removing from widget tree
• test: widget, painter, and style unit tests