Refactor data loading to use static JSON imports

- Replaced dynamic fetch calls with direct imports of skill category and team data from JSON files for improved performance and reliability.
- Removed obsolete JSON files from the public/data directory to clean up the codebase.
- Updated loadSkillCategories and loadTeams functions to return imported data directly.

lib/data-loader.ts

@@ -1,42 +1,29 @@
 import { SkillCategory, Team } from "./types";
 
+// Import direct des données JSON depuis le dossier /data
+import frontendData from "@/data/skills/frontend.json";
+import backendData from "@/data/skills/backend.json";
+import devopsData from "@/data/skills/devops.json";
+import mobileData from "@/data/skills/mobile.json";
+import dataData from "@/data/skills/data.json";
+import cloudData from "@/data/skills/cloud.json";
+import securityData from "@/data/skills/security.json";
+import designData from "@/data/skills/design.json";
+import teamsData from "@/data/teams.json";
+
 export async function loadSkillCategories(): Promise<SkillCategory[]> {
-  const categories = [
-    "frontend",
-    "backend",
-    "devops",
-    "mobile",
-    "data",
-    "cloud",
-    "security",
-    "design",
-  ];
-  const skillCategories: SkillCategory[] = [];
-
-  for (const category of categories) {
-    try {
-      const response = await fetch(`/data/skills/${category}.json`);
-      if (response.ok) {
-        const data = await response.json();
-        skillCategories.push(data);
-      }
-    } catch (error) {
-      console.error(`Failed to load ${category} skills:`, error);
-    }
-  }
-
-  return skillCategories;
+  return [
+    frontendData,
+    backendData,
+    devopsData,
+    mobileData,
+    dataData,
+    cloudData,
+    securityData,
+    designData,
+  ] as SkillCategory[];
 }
 
 export async function loadTeams(): Promise<Team[]> {
-  try {
-    const response = await fetch("/data/teams.json");
-    if (response.ok) {
-      const data = await response.json();
-      return data.teams;
-    }
-  } catch (error) {
-    console.error("Failed to load teams:", error);
-  }
-  return [];
-}
+  return teamsData.teams as Team[];
+}