Create shy-planes-report.md

Author: steida

.changeset/shy-planes-report.md

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+---
+"@evolu/common": patch
+---
+
+Evolu identicons
+
+Added `createIdenticon` function for generating visually distinct SVG identicons from Evolu `Id` (including branded IDs like `OwnerId`, etc.). For user avatars, visual identity markers, and differentiating entities in UI without storing images.
+
+### Features
+
+- **Multiple styles**: Choose from 4 styles:
+  - `"github"` (default): 5×5 grid with horizontal mirroring, inspired by GitHub avatars
+  - `"quadrant"`: 2×2 color block grid with direct RGB mapping
+  - `"gradient"`: Diagonal stripe pattern with smooth color gradients
+  - `"sutnar"`: Ladislav Sutnar-inspired compositional design with adaptive colors
+- **SVG output**: Returns SVG string that can be used directly
+
+### Example
+
+```ts
+import { createIdenticon } from "@evolu/common";
+
+// Basic usage with default GitHub style
+const svg = createIdenticon(userId);
+
+const quadrant = createIdenticon(ownerId, "quadrant");
+const gradient = createIdenticon(postId, "gradient");
+const sutnar = createIdenticon(teamId, "sutnar");
+```