feat: add skill packs management with support for category, risk, and source fields

frontend/src/lib/skills-source.ts

@@ -0,0 +1,39 @@
+export const normalizeRepoSourceUrl = (sourceUrl: string): string => {
+  const trimmed = sourceUrl.trim().replace(/\/+$/, "");
+  return trimmed.endsWith(".git") ? trimmed.slice(0, -4) : trimmed;
+};
+
+export const repoBaseFromSkillSourceUrl = (skillSourceUrl: string): string | null => {
+  try {
+    const parsed = new URL(skillSourceUrl);
+    const marker = "/tree/";
+    const markerIndex = parsed.pathname.indexOf(marker);
+    if (markerIndex <= 0) return null;
+    return normalizeRepoSourceUrl(`${parsed.origin}${parsed.pathname.slice(0, markerIndex)}`);
+  } catch {
+    return null;
+  }
+};
+
+export const packUrlFromSkillSourceUrl = (skillSourceUrl: string): string => {
+  const repoBase = repoBaseFromSkillSourceUrl(skillSourceUrl);
+  return repoBase ?? skillSourceUrl;
+};
+
+export const packLabelFromUrl = (packUrl: string): string => {
+  try {
+    const parsed = new URL(packUrl);
+    const segments = parsed.pathname.split("/").filter(Boolean);
+    if (segments.length >= 2) {
+      return `${segments[0]}/${segments[1]}`;
+    }
+    return parsed.host;
+  } catch {
+    return "Open pack";
+  }
+};
+
+export const packsHrefFromPackUrl = (packUrl: string): string => {
+  const params = new URLSearchParams({ source_url: packUrl });
+  return `/skills/packs?${params.toString()}`;
+};