Make the favicon configurable via PUBLIC_FAVICON

.env.example

@@ -17,3 +17,4 @@ PUBLIC_BLOSSOM_URL=                    # Blossom server URL for uploads (e.g., h
 # Theme color overrides — quote the value, a leading # is read as a comment otherwise
 PUBLIC_ACCENT_COLOR=                   # override the accent color (default #e32a6d), e.g. "#00ff00"; hover shade derived
 PUBLIC_SECONDARY_COLOR=                # override the secondary color (default #ffaf25), e.g. "#0000ff"; hover shade derived
+PUBLIC_FAVICON=                        # favicon URL (absolute, or /favicon.png for a file in static/); default is a filled circle in the accent color

src/lib/assets/favicon.svg

@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="107" height="128" viewBox="0 0 107 128"><title>svelte-logo</title><path d="M94.157 22.819c-10.4-14.885-30.94-19.297-45.792-9.835L22.282 29.608A29.92 29.92 0 0 0 8.764 49.65a31.5 31.5 0 0 0 3.108 20.231 30 30 0 0 0-4.477 11.183 31.9 31.9 0 0 0 5.448 24.116c10.402 14.887 30.942 19.297 45.791 9.835l26.083-16.624A29.92 29.92 0 0 0 98.235 78.35a31.53 31.53 0 0 0-3.105-20.232 30 30 0 0 0 4.474-11.182 31.88 31.88 0 0 0-5.447-24.116" style="fill:#ff3e00"/><path d="M45.817 106.582a20.72 20.72 0 0 1-22.237-8.243 19.17 19.17 0 0 1-3.277-14.503 18 18 0 0 1 .624-2.435l.49-1.498 1.337.981a33.6 33.6 0 0 0 10.203 5.098l.97.294-.09.968a5.85 5.85 0 0 0 1.052 3.878 6.24 6.24 0 0 0 6.695 2.485 5.8 5.8 0 0 0 1.603-.704L69.27 76.28a5.43 5.43 0 0 0 2.45-3.631 5.8 5.8 0 0 0-.987-4.371 6.24 6.24 0 0 0-6.698-2.487 5.7 5.7 0 0 0-1.6.704l-9.953 6.345a19 19 0 0 1-5.296 2.326 20.72 20.72 0 0 1-22.237-8.243 19.17 19.17 0 0 1-3.277-14.502 17.99 17.99 0 0 1 8.13-12.052l26.081-16.623a19 19 0 0 1 5.3-2.329 20.72 20.72 0 0 1 22.237 8.243 19.17 19.17 0 0 1 3.277 14.503 18 18 0 0 1-.624 2.435l-.49 1.498-1.337-.98a33.6 33.6 0 0 0-10.203-5.1l-.97-.294.09-.968a5.86 5.86 0 0 0-1.052-3.878 6.24 6.24 0 0 0-6.696-2.485 5.8 5.8 0 0 0-1.602.704L37.73 51.72a5.42 5.42 0 0 0-2.449 3.63 5.79 5.79 0 0 0 .986 4.372 6.24 6.24 0 0 0 6.698 2.486 5.8 5.8 0 0 0 1.602-.704l9.952-6.342a19 19 0 0 1 5.295-2.328 20.72 20.72 0 0 1 22.237 8.242 19.17 19.17 0 0 1 3.277 14.503 18 18 0 0 1-8.13 12.053l-26.081 16.622a19 19 0 0 1-5.3 2.328" style="fill:#fff"/></svg>

src/lib/config.ts

@@ -62,3 +62,14 @@ export const BLOSSOM_URL = (env.PUBLIC_BLOSSOM_URL ?? "").replace(/\/$/, "");
 // CSS variables defined in layout.css. Hover shades are derived in the layout.
 export const ACCENT_COLOR = env.PUBLIC_ACCENT_COLOR ?? "";
 export const SECONDARY_COLOR = env.PUBLIC_SECONDARY_COLOR ?? "";
+
+// Favicon: any URL (absolute, or root-relative for a file in static/). The
+// default is a ring in the accent color (a circle with a transparent hole of
+// half its radius), inlined as an SVG data URI.
+const DEFAULT_ACCENT = "#e32a6d";
+export const FAVICON =
+  env.PUBLIC_FAVICON ||
+  "data:image/svg+xml," +
+    encodeURIComponent(
+      `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32"><path fill-rule="evenodd" fill="${ACCENT_COLOR || DEFAULT_ACCENT}" d="M16 0a16 16 0 1 0 0 32a16 16 0 1 0 0-32zM16 8a8 8 0 1 1 0 16a8 8 0 1 1 0-16z"/></svg>`,
+    );

src/routes/+layout.svelte

@@ -1,6 +1,5 @@
 <script lang="ts">
   import "./layout.css";
-  import favicon from "$lib/assets/favicon.svg";
   import Navbar from "$lib/components/Navbar.svelte";
   import LeftSidebar from "$lib/components/LeftSidebar.svelte";
   import MobileMenu from "$lib/components/MobileMenu.svelte";
@@ -33,6 +32,7 @@
     ACCENT_COLOR,
     SECONDARY_COLOR,
     SEARCH_ENABLED,
+    FAVICON,
   } from "$lib/config";
 
   let { children } = $props();
@@ -177,7 +177,7 @@
 </script>
 
 <svelte:head>
-  <link rel="icon" href={favicon} />
+  <link rel="icon" href={FAVICON} />
 </svelte:head>
 
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