New Captcha Package added

2026-07-25 13:38:18 +05:30
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+# Generated CAPTCHA image styles
+
+The self-hosted and managed engines support 18 concrete renderers plus `random`.
+
+![Renderer gallery](./image-style-gallery.png)
+
+## Concrete styles
+
+| Style | Main effect | Suggested use |
+| --- | --- | --- |
+| `classic` | Dots, crossing lines, glyph jitter | General default pool |
+| `collision` | Overlapping coloured glyphs and bars | Medium or hard challenges |
+| `snow` | Dense snow-like speckles | Medium challenges |
+| `corrosion` | Eroded glyph patches and rust-like noise | Medium or hard challenges |
+| `spiderweb` | Connected web lines and nodes | Medium challenges |
+| `cross-shadow` | Multi-colour offset shadows | Medium challenges |
+| `split` | Horizontally shifted image bands | Medium or hard challenges |
+| `split2` | Vertically shifted image strips | Medium or hard challenges |
+| `cut` | Slashed and interrupted character strokes | Medium challenges |
+| `darts` | Radial lines and target rings | Medium challenges |
+| `distortion` | Two-axis sinusoidal distortion | Medium or hard challenges |
+| `stitch` | Dashed seams and cross stitches | Easy or medium challenges |
+| `striped` | Diagonal and horizontal stripes | Easy or medium challenges |
+| `wave` | Strong wave transformation | Medium or hard challenges |
+| `grid-noise` | Grid lines and translucent cells | Easy or medium challenges |
+| `scribble` | Random-walk line scribbles | Medium challenges |
+| `pixel` | Pixel blocks and shifted regions | Medium challenges |
+| `broken-lines` | Missing stroke segments and fragments | Medium or hard challenges |
+
+## Random pool
+
+```wrn
+<Captcha
+  type="alphanumeric"
+  action="signup"
+  imageStyle="random"
+  allowedStyles="classic,snow,spiderweb,distortion,wave"
+  excludedStyles="collision"
+  disturbance="50"
+/>
+```
+
+The engine resolves one concrete style per challenge. Refreshing creates a new challenge and selects again. Challenge metadata contains `imageStyle`, `requestedImageStyle`, and `imageStylePool`; it never contains the answer.
+
+## Accessibility
+
+Keep `showAudio="true"` or provide another non-visual path. High disturbance and hard renderers should not be the only completion option.