diff --git a/.env.example b/.env.example
index 0d7096a..8bfcfd7 100644
--- a/.env.example
+++ b/.env.example
@@ -1,10 +1,7 @@
-# Admin credentials — générer via `npm run hash:password -- monMotDePasse`
+# Admin credentials — générer via `npm run hash:password -- 'monMotDePasse'`
 ADMIN_PASSWORD_HASH=
 ADMIN_JWT_SECRET=
 
 # Port de production (Plesk Node.js)
 PORT=3100
 HOST=0.0.0.0
-
-ADMIN_PASSWORD_HASH=$2b$12$1nXI9CgStfBs/DrtSpJ2buF1hnUCUTpcx6rDZNRczlkuCHXb.AjbK
-ADMIN_JWT_SECRET=wef4R2NWoSko/bnIYFOyaQamI0QqOLe3J4ZSjsGdmvfgtADIT26Y6piFoM0l8h5o
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 5ec0827..dd26266 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,3 +30,6 @@ pnpm-debug.log*
 # runtime data (uploads + JSON content edited via /admin)
 # kept on the server, not deployed via FTP
 data/
+
+# test artifacts (coverage)
+coverage/
diff --git a/package-lock.json b/package-lock.json
index 54a978a..086fd94 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,44 +12,40 @@
         "@astrojs/react": "^5.0.3",
         "@hookform/resolvers": "^5.2.2",
         "@iconify-icon/react": "^3.0.3",
-        "@react-three/drei": "^10.7.7",
-        "@react-three/fiber": "^9.6.0",
         "@tailwindcss/vite": "^4.2.2",
         "@types/react": "^19.2.14",
         "@types/react-dom": "^19.2.3",
         "astro": "^6.1.8",
         "bcryptjs": "^3.0.3",
         "framer-motion": "^12.38.0",
-        "gsap": "^3.15.0",
         "jose": "^6.2.2",
         "lenis": "^1.3.23",
-        "lucide-react": "^1.8.0",
         "react": "^19.2.5",
         "react-dom": "^19.2.5",
         "react-hook-form": "^7.75.0",
         "tailwindcss": "^4.2.2",
-        "three": "^0.184.0",
         "zod": "^4.3.6"
       },
       "devDependencies": {
         "@astrojs/check": "^0.9.8",
         "@types/bcryptjs": "^2.4.6",
         "@types/node": "^25.6.0",
-        "@types/three": "^0.184.0",
-        "typescript": "^5.9.3"
+        "@vitest/coverage-v8": "^4.1.6",
+        "typescript": "^5.9.3",
+        "vitest": "^4.1.6"
       },
       "engines": {
         "node": ">=22.12.0"
       }
     },
     "node_modules/@astrojs/check": {
-      "version": "0.9.8",
-      "resolved": "https://registry.npmjs.org/@astrojs/check/-/check-0.9.8.tgz",
-      "integrity": "sha512-LDng8446QLS5ToKjRHd3bgUdirvemVVExV7nRyJfW2wV36xuv7vDxwy5NWN9zqeSEDgg0Tv84sP+T3yEq+Zlkw==",
+      "version": "0.9.9",
+      "resolved": "https://registry.npmjs.org/@astrojs/check/-/check-0.9.9.tgz",
+      "integrity": "sha512-A5UW8uIuErLWEoRQvzgXpO1gTjUFtK8r7nU2Z7GewAMxUb7bPvpk11qaKKgxqXlHJWlAvaaxy+Xg28A6bmQ1Tg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@astrojs/language-server": "^2.16.5",
+        "@astrojs/language-server": "^2.16.7",
         "chokidar": "^4.0.3",
         "kleur": "^4.1.5",
         "yargs": "^17.7.2"
@@ -58,7 +54,7 @@
         "astro-check": "bin/astro-check.js"
       },
       "peerDependencies": {
-        "typescript": "^5.0.0"
+        "typescript": "^5.0.0 || ^6.0.0"
       }
     },
     "node_modules/@astrojs/check/node_modules/chokidar": {
@@ -92,9 +88,10 @@
       }
     },
     "node_modules/@astrojs/compiler": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/@astrojs/compiler/-/compiler-3.0.1.tgz",
-      "integrity": "sha512-z97oYbdebO5aoWzuJ/8q5hLK232+17KcLZ7cJ8BCWk6+qNzVxn/gftC0KzMBUTD8WAaBkPpNSQK6PXLnNrZ0CA==",
+      "version": "2.13.1",
+      "resolved": "https://registry.npmjs.org/@astrojs/compiler/-/compiler-2.13.1.tgz",
+      "integrity": "sha512-f3FN83d2G/v32ipNClRKgYv30onQlMZX1vCeZMjPsMMPl1mDpmbl0+N5BYo4S/ofzqJyS5hvwacEo0CCVDn/Qg==",
+      "dev": true,
       "license": "MIT"
     },
     "node_modules/@astrojs/internal-helpers": {
@@ -107,9 +104,9 @@
       }
     },
     "node_modules/@astrojs/language-server": {
-      "version": "2.16.6",
-      "resolved": "https://registry.npmjs.org/@astrojs/language-server/-/language-server-2.16.6.tgz",
-      "integrity": "sha512-N990lu+HSFiG57owR0XBkr02BYMgiLCshLf+4QG4v6jjSWkBeQGnzqi+E1L08xFPPJ7eEeXnxPXGLaVv5pa4Ug==",
+      "version": "2.16.8",
+      "resolved": "https://registry.npmjs.org/@astrojs/language-server/-/language-server-2.16.8.tgz",
+      "integrity": "sha512-yg1pZF6hs9FaKr2fgXMOGbW7pDLgFexFjuhWilPAc8VybTU+WSnbfbhYaUL1exm6dAK4sM3aKXGcfVwss+HXbg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -121,7 +118,7 @@
         "@volar/language-server": "~2.4.28",
         "@volar/language-service": "~2.4.28",
         "muggle-string": "^0.4.1",
-        "tinyglobby": "^0.2.15",
+        "tinyglobby": "^0.2.16",
         "volar-service-css": "0.0.70",
         "volar-service-emmet": "0.0.70",
         "volar-service-html": "0.0.70",
@@ -148,20 +145,13 @@
         }
       }
     },
-    "node_modules/@astrojs/language-server/node_modules/@astrojs/compiler": {
-      "version": "2.13.1",
-      "resolved": "https://registry.npmjs.org/@astrojs/compiler/-/compiler-2.13.1.tgz",
-      "integrity": "sha512-f3FN83d2G/v32ipNClRKgYv30onQlMZX1vCeZMjPsMMPl1mDpmbl0+N5BYo4S/ofzqJyS5hvwacEo0CCVDn/Qg==",
-      "dev": true,
-      "license": "MIT"
-    },
     "node_modules/@astrojs/markdown-remark": {
-      "version": "7.1.0",
-      "resolved": "https://registry.npmjs.org/@astrojs/markdown-remark/-/markdown-remark-7.1.0.tgz",
-      "integrity": "sha512-P+HnCsu2js3BoTc8kFmu+E9gOcFeMdPris75g+Zl4sY8+bBRbSQV6xzcBDbZ27eE7yBGEGQoqjpChx+KJYIPYQ==",
+      "version": "7.1.1",
+      "resolved": "https://registry.npmjs.org/@astrojs/markdown-remark/-/markdown-remark-7.1.1.tgz",
+      "integrity": "sha512-C6e9BnLGlbdv6bV8MYGeHpHxsUHrCrB4OuRLqi5LI7oiBVcBcqfUN06zpwFQdHgV48QCCrMmLpyqBr7VqC+swA==",
       "license": "MIT",
       "dependencies": {
-        "@astrojs/internal-helpers": "0.8.0",
+        "@astrojs/internal-helpers": "0.9.0",
         "@astrojs/prism": "4.0.1",
         "github-slugger": "^2.0.0",
         "hast-util-from-html": "^2.0.3",
@@ -184,6 +174,15 @@
         "vfile": "^6.0.3"
       }
     },
+    "node_modules/@astrojs/markdown-remark/node_modules/@astrojs/internal-helpers": {
+      "version": "0.9.0",
+      "resolved": "https://registry.npmjs.org/@astrojs/internal-helpers/-/internal-helpers-0.9.0.tgz",
+      "integrity": "sha512-GdYkzR26re8izmyYlBqf4z2s7zNngmWLFuxw0UKiPNqHraZGS6GKWIwSHgS22RDlu2ePFJ8bzmpBcUszut/SDg==",
+      "license": "MIT",
+      "dependencies": {
+        "picomatch": "^4.0.4"
+      }
+    },
     "node_modules/@astrojs/node": {
       "version": "10.0.5",
       "resolved": "https://registry.npmjs.org/@astrojs/node/-/node-10.0.5.tgz",
@@ -233,13 +232,12 @@
       }
     },
     "node_modules/@astrojs/telemetry": {
-      "version": "3.3.1",
-      "resolved": "https://registry.npmjs.org/@astrojs/telemetry/-/telemetry-3.3.1.tgz",
-      "integrity": "sha512-7fcIxXS9J4ls5tr8b3ww9rbAIz2+HrhNJYZdkAhhB4za/I5IZ/60g+Bs8q7zwG0tOIZfNB4JWhVJ1Qkl/OrNCw==",
+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/@astrojs/telemetry/-/telemetry-3.3.2.tgz",
+      "integrity": "sha512-j8DNruA8ors99Al39RYZPJK4DC1bKkoNm93mAMuBhY9TCNC4R8n1q7ovFnJ5qhGh5Lsh7pa1gpQVpYpsJPeTHQ==",
       "license": "MIT",
       "dependencies": {
         "ci-info": "^4.4.0",
-        "dlv": "^1.1.3",
         "dset": "^3.1.4",
         "is-docker": "^4.0.0",
         "is-wsl": "^3.1.1",
@@ -504,15 +502,6 @@
         "@babel/core": "^7.0.0-0"
       }
     },
-    "node_modules/@babel/runtime": {
-      "version": "7.29.2",
-      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.29.2.tgz",
-      "integrity": "sha512-JiDShH45zKHWyGe4ZNVRrCjBz8Nh9TMmZG1kh4QTK8hCBTWBi8Da+i7s1fJw7/lYpM4ccepSNfqzZ/QvABBi5g==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=6.9.0"
-      }
-    },
     "node_modules/@babel/template": {
       "version": "7.28.6",
       "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.28.6.tgz",
@@ -558,6 +547,16 @@
         "node": ">=6.9.0"
       }
     },
+    "node_modules/@bcoe/v8-coverage": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/@bcoe/v8-coverage/-/v8-coverage-1.0.2.tgz",
+      "integrity": "sha512-6zABk/ECA/QYSCQ1NGiVwwbQerUCZ+TQbp64Q3AgmfNvurHH0j8TtXa1qbShXA6qqkpAj4V5W8pP6mLe1mcMqA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/@capsizecss/unpack": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/@capsizecss/unpack/-/unpack-4.0.0.tgz",
@@ -592,12 +591,6 @@
         "sisteransi": "^1.0.5"
       }
     },
-    "node_modules/@dimforge/rapier3d-compat": {
-      "version": "0.12.0",
-      "resolved": "https://registry.npmjs.org/@dimforge/rapier3d-compat/-/rapier3d-compat-0.12.0.tgz",
-      "integrity": "sha512-uekIGetywIgopfD97oDL5PfeezkFpNhwlzlaEYNOA0N6ghdsOvh/HYjSMek5Q2O1PYvRSDFcqFVJl4r4ZBwOow==",
-      "license": "Apache-2.0"
-    },
     "node_modules/@emmetio/abbreviation": {
       "version": "2.3.3",
       "resolved": "https://registry.npmjs.org/@emmetio/abbreviation/-/abbreviation-2.3.3.tgz",
@@ -1630,118 +1623,12 @@
         "@jridgewell/sourcemap-codec": "^1.4.14"
       }
     },
-    "node_modules/@mediapipe/tasks-vision": {
-      "version": "0.10.17",
-      "resolved": "https://registry.npmjs.org/@mediapipe/tasks-vision/-/tasks-vision-0.10.17.tgz",
-      "integrity": "sha512-CZWV/q6TTe8ta61cZXjfnnHsfWIdFhms03M9T7Cnd5y2mdpylJM0rF1qRq+wsQVRMLz1OYPVEBU9ph2Bx8cxrg==",
-      "license": "Apache-2.0"
-    },
-    "node_modules/@monogrid/gainmap-js": {
-      "version": "3.4.0",
-      "resolved": "https://registry.npmjs.org/@monogrid/gainmap-js/-/gainmap-js-3.4.0.tgz",
-      "integrity": "sha512-2Z0FATFHaoYJ8b+Y4y4Hgfn3FRFwuU5zRrk+9dFWp4uGAdHGqVEdP7HP+gLA3X469KXHmfupJaUbKo1b/aDKIg==",
-      "license": "MIT",
-      "dependencies": {
-        "promise-worker-transferable": "^1.0.4"
-      },
-      "peerDependencies": {
-        "three": ">= 0.159.0"
-      }
-    },
     "node_modules/@oslojs/encoding": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/@oslojs/encoding/-/encoding-1.1.0.tgz",
       "integrity": "sha512-70wQhgYmndg4GCPxPPxPGevRKqTIJ2Nh4OkiMWmDAVYsTQ+Ta7Sq+rPevXyXGdzr30/qZBnyOalCszoMxlyldQ==",
       "license": "MIT"
     },
-    "node_modules/@react-three/drei": {
-      "version": "10.7.7",
-      "resolved": "https://registry.npmjs.org/@react-three/drei/-/drei-10.7.7.tgz",
-      "integrity": "sha512-ff+J5iloR0k4tC++QtD/j9u3w5fzfgFAWDtAGQah9pF2B1YgOq/5JxqY0/aVoQG5r3xSZz0cv5tk2YuBob4xEQ==",
-      "license": "MIT",
-      "dependencies": {
-        "@babel/runtime": "^7.26.0",
-        "@mediapipe/tasks-vision": "0.10.17",
-        "@monogrid/gainmap-js": "^3.0.6",
-        "@use-gesture/react": "^10.3.1",
-        "camera-controls": "^3.1.0",
-        "cross-env": "^7.0.3",
-        "detect-gpu": "^5.0.56",
-        "glsl-noise": "^0.0.0",
-        "hls.js": "^1.5.17",
-        "maath": "^0.10.8",
-        "meshline": "^3.3.1",
-        "stats-gl": "^2.2.8",
-        "stats.js": "^0.17.0",
-        "suspend-react": "^0.1.3",
-        "three-mesh-bvh": "^0.8.3",
-        "three-stdlib": "^2.35.6",
-        "troika-three-text": "^0.52.4",
-        "tunnel-rat": "^0.1.2",
-        "use-sync-external-store": "^1.4.0",
-        "utility-types": "^3.11.0",
-        "zustand": "^5.0.1"
-      },
-      "peerDependencies": {
-        "@react-three/fiber": "^9.0.0",
-        "react": "^19",
-        "react-dom": "^19",
-        "three": ">=0.159"
-      },
-      "peerDependenciesMeta": {
-        "react-dom": {
-          "optional": true
-        }
-      }
-    },
-    "node_modules/@react-three/fiber": {
-      "version": "9.6.0",
-      "resolved": "https://registry.npmjs.org/@react-three/fiber/-/fiber-9.6.0.tgz",
-      "integrity": "sha512-90abYK2q5/qDM+GACs9zRvc5KhEEpEWqWlHSd64zTPNxg+9wCJvTfyD9x2so7hlQhjRYO1Fa6flR3BC/kpTFkA==",
-      "license": "MIT",
-      "dependencies": {
-        "@babel/runtime": "^7.17.8",
-        "@types/webxr": "*",
-        "base64-js": "^1.5.1",
-        "buffer": "^6.0.3",
-        "its-fine": "^2.0.0",
-        "react-use-measure": "^2.1.7",
-        "scheduler": "^0.27.0",
-        "suspend-react": "^0.1.3",
-        "use-sync-external-store": "^1.4.0",
-        "zustand": "^5.0.3"
-      },
-      "peerDependencies": {
-        "expo": ">=43.0",
-        "expo-asset": ">=8.4",
-        "expo-file-system": ">=11.0",
-        "expo-gl": ">=11.0",
-        "react": ">=19 <19.3",
-        "react-dom": ">=19 <19.3",
-        "react-native": ">=0.78",
-        "three": ">=0.156"
-      },
-      "peerDependenciesMeta": {
-        "expo": {
-          "optional": true
-        },
-        "expo-asset": {
-          "optional": true
-        },
-        "expo-file-system": {
-          "optional": true
-        },
-        "expo-gl": {
-          "optional": true
-        },
-        "react-dom": {
-          "optional": true
-        },
-        "react-native": {
-          "optional": true
-        }
-      }
-    },
     "node_modules/@rolldown/pluginutils": {
       "version": "1.0.0-rc.3",
       "resolved": "https://registry.npmjs.org/@rolldown/pluginutils/-/pluginutils-1.0.0-rc.3.tgz",
@@ -2195,6 +2082,13 @@
       "integrity": "sha512-83yeghZ2xxin3Nj8z1NMd/NCuca+gsYXswywDy5bHvwlWL8tpTQmzGeUuHd9FC3E/SBEMvzJRwWEOz5gGes9Qg==",
       "license": "MIT"
     },
+    "node_modules/@standard-schema/spec": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@standard-schema/spec/-/spec-1.1.0.tgz",
+      "integrity": "sha512-l2aFy5jALhniG5HgqrD6jXLi/rUWrKvqN/qJx6yoJsgKhblVd+iqqU4RCXavm/jPityDo5TCvKMnpjKnOriy0w==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@standard-schema/utils": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/@standard-schema/utils/-/utils-0.3.0.tgz",
@@ -2458,12 +2352,6 @@
         "vite": "^5.2.0 || ^6 || ^7 || ^8"
       }
     },
-    "node_modules/@tweenjs/tween.js": {
-      "version": "23.1.3",
-      "resolved": "https://registry.npmjs.org/@tweenjs/tween.js/-/tween.js-23.1.3.tgz",
-      "integrity": "sha512-vJmvvwFxYuGnF2axRtPYocag6Clbb5YS7kLL+SO/TeVFzHqDIWrNKYtcsPMibjDx9O+bu+psAy9NKfWklassUA==",
-      "license": "MIT"
-    },
     "node_modules/@types/babel__core": {
       "version": "7.20.5",
       "resolved": "https://registry.npmjs.org/@types/babel__core/-/babel__core-7.20.5.tgz",
@@ -2512,6 +2400,17 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/chai": {
+      "version": "5.2.3",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-5.2.3.tgz",
+      "integrity": "sha512-Mw558oeA9fFbv65/y4mHtXDs9bPnFMZAL/jxdPFUpOHHIXX91mcgEHbS5Lahr+pwZFR8A7GQleRWeI6cGFC2UA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/deep-eql": "*",
+        "assertion-error": "^2.0.1"
+      }
+    },
     "node_modules/@types/debug": {
       "version": "4.1.13",
       "resolved": "https://registry.npmjs.org/@types/debug/-/debug-4.1.13.tgz",
@@ -2521,10 +2420,11 @@
         "@types/ms": "*"
       }
     },
-    "node_modules/@types/draco3d": {
-      "version": "1.4.10",
-      "resolved": "https://registry.npmjs.org/@types/draco3d/-/draco3d-1.4.10.tgz",
-      "integrity": "sha512-AX22jp8Y7wwaBgAixaSvkoG4M/+PlAcm3Qs4OW8yT9DM4xUpWKeFhLueTAyZF39pviAdcDdeJoACapiAceqNcw==",
+    "node_modules/@types/deep-eql": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/@types/deep-eql/-/deep-eql-4.0.2.tgz",
+      "integrity": "sha512-c9h9dVVMigMPc4bwTvC5dxqtqJZwQPePsWjPlpSOnojbor6pGqdk541lfA7AqFQr5pB1BRdq0juY9db81BwyFw==",
+      "dev": true,
       "license": "MIT"
     },
     "node_modules/@types/estree": {
@@ -2576,12 +2476,6 @@
         "undici-types": "~7.19.0"
       }
     },
-    "node_modules/@types/offscreencanvas": {
-      "version": "2019.7.3",
-      "resolved": "https://registry.npmjs.org/@types/offscreencanvas/-/offscreencanvas-2019.7.3.tgz",
-      "integrity": "sha512-ieXiYmgSRXUDeOntE1InxjWyvEelZGP63M+cGuquuRLuIKKT1osnkXjxev9B7d1nXSug5vpunx+gNlbVxMlC9A==",
-      "license": "MIT"
-    },
     "node_modules/@types/react": {
       "version": "19.2.14",
       "resolved": "https://registry.npmjs.org/@types/react/-/react-19.2.14.tgz",
@@ -2600,71 +2494,18 @@
         "@types/react": "^19.2.0"
       }
     },
-    "node_modules/@types/react-reconciler": {
-      "version": "0.28.9",
-      "resolved": "https://registry.npmjs.org/@types/react-reconciler/-/react-reconciler-0.28.9.tgz",
-      "integrity": "sha512-HHM3nxyUZ3zAylX8ZEyrDNd2XZOnQ0D5XfunJF5FLQnZbHHYq4UWvW1QfelQNXv1ICNkwYhfxjwfnqivYB6bFg==",
-      "license": "MIT",
-      "peerDependencies": {
-        "@types/react": "*"
-      }
-    },
-    "node_modules/@types/stats.js": {
-      "version": "0.17.4",
-      "resolved": "https://registry.npmjs.org/@types/stats.js/-/stats.js-0.17.4.tgz",
-      "integrity": "sha512-jIBvWWShCvlBqBNIZt0KAshWpvSjhkwkEu4ZUcASoAvhmrgAUI2t1dXrjSL4xXVLB4FznPrIsX3nKXFl/Dt4vA==",
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+      "version": "4.1.6",
+      "resolved": "https://registry.npmjs.org/vitest/-/vitest-4.1.6.tgz",
+      "integrity": "sha512-6lvjbS3p9b4CrdCmguzbh2/4uoXhGE2q71R4OX5sqF9R1bo9Xd6fGrMAfvp5wnCzlBnFVdCOp6onuTQVbo8iUQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@vitest/expect": "4.1.6",
+        "@vitest/mocker": "4.1.6",
+        "@vitest/pretty-format": "4.1.6",
+        "@vitest/runner": "4.1.6",
+        "@vitest/snapshot": "4.1.6",
+        "@vitest/spy": "4.1.6",
+        "@vitest/utils": "4.1.6",
+        "es-module-lexer": "^2.0.0",
+        "expect-type": "^1.3.0",
+        "magic-string": "^0.30.21",
+        "obug": "^2.1.1",
+        "pathe": "^2.0.3",
+        "picomatch": "^4.0.3",
+        "std-env": "^4.0.0-rc.1",
+        "tinybench": "^2.9.0",
+        "tinyexec": "^1.0.2",
+        "tinyglobby": "^0.2.15",
+        "tinyrainbow": "^3.1.0",
+        "vite": "^6.0.0 || ^7.0.0 || ^8.0.0",
+        "why-is-node-running": "^2.3.0"
+      },
+      "bin": {
+        "vitest": "vitest.mjs"
+      },
+      "engines": {
+        "node": "^20.0.0 || ^22.0.0 || >=24.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      },
+      "peerDependencies": {
+        "@edge-runtime/vm": "*",
+        "@opentelemetry/api": "^1.9.0",
+        "@types/node": "^20.0.0 || ^22.0.0 || >=24.0.0",
+        "@vitest/browser-playwright": "4.1.6",
+        "@vitest/browser-preview": "4.1.6",
+        "@vitest/browser-webdriverio": "4.1.6",
+        "@vitest/coverage-istanbul": "4.1.6",
+        "@vitest/coverage-v8": "4.1.6",
+        "@vitest/ui": "4.1.6",
+        "happy-dom": "*",
+        "jsdom": "*",
+        "vite": "^6.0.0 || ^7.0.0 || ^8.0.0"
+      },
+      "peerDependenciesMeta": {
+        "@edge-runtime/vm": {
+          "optional": true
+        },
+        "@opentelemetry/api": {
+          "optional": true
+        },
+        "@types/node": {
+          "optional": true
+        },
+        "@vitest/browser-playwright": {
+          "optional": true
+        },
+        "@vitest/browser-preview": {
+          "optional": true
+        },
+        "@vitest/browser-webdriverio": {
+          "optional": true
+        },
+        "@vitest/coverage-istanbul": {
+          "optional": true
+        },
+        "@vitest/coverage-v8": {
+          "optional": true
+        },
+        "@vitest/ui": {
+          "optional": true
+        },
+        "happy-dom": {
+          "optional": true
+        },
+        "jsdom": {
+          "optional": true
+        },
+        "vite": {
+          "optional": false
+        }
+      }
+    },
     "node_modules/volar-service-css": {
       "version": "0.0.70",
       "resolved": "https://registry.npmjs.org/volar-service-css/-/volar-service-css-0.0.70.tgz",
@@ -7606,13 +7452,6 @@
         "npm": ">=7.0.0"
       }
     },
-    "node_modules/vscode-json-languageservice/node_modules/jsonc-parser": {
-      "version": "3.3.1",
-      "resolved": "https://registry.npmjs.org/jsonc-parser/-/jsonc-parser-3.3.1.tgz",
-      "integrity": "sha512-HUgH65KyejrUFPvHFPbqOY0rsFip3Bo5wb4ngvdi1EpCYWUQDC5V+Y7mZws+DLkr4M//zQJoanu1SP+87Dv1oQ==",
-      "dev": true,
-      "license": "MIT"
-    },
     "node_modules/vscode-jsonrpc": {
       "version": "8.2.0",
       "resolved": "https://registry.npmjs.org/vscode-jsonrpc/-/vscode-jsonrpc-8.2.0.tgz",
@@ -7685,32 +7524,6 @@
         "url": "https://github.com/sponsors/wooorm"
       }
     },
-    "node_modules/webgl-constants": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/webgl-constants/-/webgl-constants-1.1.1.tgz",
-      "integrity": "sha512-LkBXKjU5r9vAW7Gcu3T5u+5cvSvh5WwINdr0C+9jpzVB41cjQAP5ePArDtk/WHYdVj0GefCgM73BA7FlIiNtdg=="
-    },
-    "node_modules/webgl-sdf-generator": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/webgl-sdf-generator/-/webgl-sdf-generator-1.1.1.tgz",
-      "integrity": "sha512-9Z0JcMTFxeE+b2x1LJTdnaT8rT8aEp7MVxkNwoycNmJWwPdzoXzMh0BjJSh/AEFP+KPYZUli814h8bJZFIZ2jA==",
-      "license": "MIT"
-    },
-    "node_modules/which": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
-      "integrity": "sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==",
-      "license": "ISC",
-      "dependencies": {
-        "isexe": "^2.0.0"
-      },
-      "bin": {
-        "node-which": "bin/node-which"
-      },
-      "engines": {
-        "node": ">= 8"
-      }
-    },
     "node_modules/which-pm-runs": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/which-pm-runs/-/which-pm-runs-1.1.0.tgz",
@@ -7720,6 +7533,23 @@
         "node": ">=4"
       }
     },
+    "node_modules/why-is-node-running": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/why-is-node-running/-/why-is-node-running-2.3.0.tgz",
+      "integrity": "sha512-hUrmaWBdVDcxvYqnyh09zunKzROWjbZTiNy8dBEjkS7ehEDQibXJ7XvlmtbwuTclUiIyN+CyXQD4Vmko8fNm8w==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "siginfo": "^2.0.0",
+        "stackback": "0.0.2"
+      },
+      "bin": {
+        "why-is-node-running": "cli.js"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/wrap-ansi": {
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-7.0.0.tgz",
@@ -7878,35 +7708,6 @@
         "url": "https://github.com/sponsors/colinhacks"
       }
     },
-    "node_modules/zustand": {
-      "version": "5.0.12",
-      "resolved": "https://registry.npmjs.org/zustand/-/zustand-5.0.12.tgz",
-      "integrity": "sha512-i77ae3aZq4dhMlRhJVCYgMLKuSiZAaUPAct2AksxQ+gOtimhGMdXljRT21P5BNpeT4kXlLIckvkPM029OljD7g==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=12.20.0"
-      },
-      "peerDependencies": {
-        "@types/react": ">=18.0.0",
-        "immer": ">=9.0.6",
-        "react": ">=18.0.0",
-        "use-sync-external-store": ">=1.2.0"
-      },
-      "peerDependenciesMeta": {
-        "@types/react": {
-          "optional": true
-        },
-        "immer": {
-          "optional": true
-        },
-        "react": {
-          "optional": true
-        },
-        "use-sync-external-store": {
-          "optional": true
-        }
-      }
-    },
     "node_modules/zwitch": {
       "version": "2.0.4",
       "resolved": "https://registry.npmjs.org/zwitch/-/zwitch-2.0.4.tgz",
diff --git a/package.json b/package.json
index 173916e..c29c936 100644
--- a/package.json
+++ b/package.json
@@ -12,6 +12,9 @@
     "start": "HOST=0.0.0.0 PORT=3100 node ./dist/server/entry.mjs",
     "astro": "astro",
     "check": "astro check",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "test:coverage": "vitest run --coverage",
     "hash:password": "node scripts/hash-password.mjs"
   },
   "dependencies": {
@@ -19,30 +22,26 @@
     "@astrojs/react": "^5.0.3",
     "@hookform/resolvers": "^5.2.2",
     "@iconify-icon/react": "^3.0.3",
-    "@react-three/drei": "^10.7.7",
-    "@react-three/fiber": "^9.6.0",
     "@tailwindcss/vite": "^4.2.2",
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",
     "astro": "^6.1.8",
     "bcryptjs": "^3.0.3",
     "framer-motion": "^12.38.0",
-    "gsap": "^3.15.0",
     "jose": "^6.2.2",
     "lenis": "^1.3.23",
-    "lucide-react": "^1.8.0",
     "react": "^19.2.5",
     "react-dom": "^19.2.5",
     "react-hook-form": "^7.75.0",
     "tailwindcss": "^4.2.2",
-    "three": "^0.184.0",
     "zod": "^4.3.6"
   },
   "devDependencies": {
     "@astrojs/check": "^0.9.8",
     "@types/bcryptjs": "^2.4.6",
     "@types/node": "^25.6.0",
-    "@types/three": "^0.184.0",
-    "typescript": "^5.9.3"
+    "@vitest/coverage-v8": "^4.1.6",
+    "typescript": "^5.9.3",
+    "vitest": "^4.1.6"
   }
 }
diff --git a/src/components/Header.astro b/src/components/Header.astro
index 51e7290..59a5b2d 100644
--- a/src/components/Header.astro
+++ b/src/components/Header.astro
@@ -198,7 +198,7 @@ const current = Astro.url.pathname;
   </div>
 </header>
 
-<script data-astro-rerun>
+<script is:inline data-astro-rerun>
   // Mobile menu
   const btn = document.getElementById('mobile-menu-btn');
   const menu = document.getElementById('mobile-menu');
diff --git a/src/components/ProjectCard.astro b/src/components/ProjectCard.astro
index 616f356..3e460ab 100644
--- a/src/components/ProjectCard.astro
+++ b/src/components/ProjectCard.astro
@@ -7,7 +7,6 @@ interface Props {
 const { project } = Astro.props;
 const isArchived = project.status === 'archived';
 const isPrivate = project.status === 'private';
-const isWIP = project.status === 'wip';
 const statusLabel =
   project.status === 'live'
     ? 'Live'
diff --git a/src/components/islands/PatchBay.tsx b/src/components/islands/PatchBay.tsx
index 2f736af..76aadc6 100644
--- a/src/components/islands/PatchBay.tsx
+++ b/src/components/islands/PatchBay.tsx
@@ -94,7 +94,7 @@ export default function PatchBay({ technical, soft }: Props) {
           Techniques
         </h3>
         <ul className="space-y-2.5">
-          {technical.map((s, i) => (
+          {technical.map((s) => (
             <li key={s} className="flex items-center gap-3 font-mono text-xs uppercase tracking-wider">
               <span className="text-[color:var(--color-text-muted)] flex-1">{s}</span>
               <span
@@ -122,7 +122,7 @@ export default function PatchBay({ technical, soft }: Props) {
           Transverses
         </h3>
         <ul className="space-y-2.5">
-          {soft.map((s, i) => (
+          {soft.map((s) => (
             <li key={s} className="flex items-center gap-3 font-mono text-xs uppercase tracking-wider">
               <span
                 data-jack="right"
diff --git a/src/content/schemas/formations.ts b/src/content/schemas/formations.ts
index ec31561..6bec90e 100644
--- a/src/content/schemas/formations.ts
+++ b/src/content/schemas/formations.ts
@@ -4,7 +4,7 @@ export const FormationSchema = z.object({
   id: z.string(),
   title: z.string(),
   school: z.string(),
-  schoolUrl: z.string().url().optional(),
+  schoolUrl: z.url().optional(),
   period: z.string(),
   description: z.string().optional(),
 });
diff --git a/src/content/schemas/profile.ts b/src/content/schemas/profile.ts
index 8a3e9d6..54d8d70 100644
--- a/src/content/schemas/profile.ts
+++ b/src/content/schemas/profile.ts
@@ -23,11 +23,11 @@ export const ProfileSchema = z.object({
       .default([]),
   }),
   socials: z.object({
-    email: z.string().email().optional(),
-    github: z.string().url().optional(),
-    gitea: z.string().url().optional(),
-    linkedin: z.string().url().optional(),
-    website: z.string().url().optional(),
+    email: z.email().optional(),
+    github: z.url().optional(),
+    gitea: z.url().optional(),
+    linkedin: z.url().optional(),
+    website: z.url().optional(),
   }),
   cv: z.string().optional(),
 });
diff --git a/src/content/schemas/projects.ts b/src/content/schemas/projects.ts
index 1ca4557..ed97cf4 100644
--- a/src/content/schemas/projects.ts
+++ b/src/content/schemas/projects.ts
@@ -8,8 +8,8 @@ export const ProjectSchema = z.object({
   image: z.string().optional(),
   category: z.enum(['web', 'mobile', 'bot', 'infra', 'other']).default('web'),
   status: z.enum(['live', 'archived', 'private', 'wip']).default('live'),
-  url: z.string().url().optional(),
-  repoUrl: z.string().url().optional(),
+  url: z.url().optional(),
+  repoUrl: z.url().optional(),
   stack: z.array(z.string()).default([]),
   featured: z.boolean().default(false),
 });
diff --git a/src/content/schemas/site.ts b/src/content/schemas/site.ts
index fc12ace..28cb35d 100644
--- a/src/content/schemas/site.ts
+++ b/src/content/schemas/site.ts
@@ -3,7 +3,7 @@ import { z } from 'zod';
 export const SiteSchema = z.object({
   title: z.string(),
   description: z.string(),
-  url: z.string().url(),
+  url: z.url(),
   keywords: z.array(z.string()).default([]),
   ogImage: z.string(),
   twitter: z.string().optional(),
diff --git a/src/lib/auth.ts b/src/lib/auth.ts
index 4087c33..9973fa3 100644
--- a/src/lib/auth.ts
+++ b/src/lib/auth.ts
@@ -9,9 +9,22 @@ const env = {
 };
 
 const ADMIN_PASSWORD_HASH = (env.ADMIN_PASSWORD_HASH as string | undefined) ?? '';
-const JWT_SECRET =
-  (env.ADMIN_JWT_SECRET as string | undefined) ?? 'dev-secret-change-me-in-production';
-const SECRET_KEY = new TextEncoder().encode(JWT_SECRET);
+const JWT_SECRET = (env.ADMIN_JWT_SECRET as string | undefined) ?? '';
+
+// Lazy : on ne throw pas au chargement du module (Astro build importe ce fichier
+// en SSR sans forcément avoir le .env). On throw au premier usage runtime.
+let cachedKey: Uint8Array | null = null;
+function getSecretKey(): Uint8Array {
+  if (cachedKey) return cachedKey;
+  if (!JWT_SECRET || JWT_SECRET.length < 32) {
+    throw new Error(
+      '[auth] ADMIN_JWT_SECRET manquant ou trop court (>= 32 chars). ' +
+        'Générer via `npm run hash:password -- <motdepasse>` et reporter dans .env.',
+    );
+  }
+  cachedKey = new TextEncoder().encode(JWT_SECRET);
+  return cachedKey;
+}
 
 export const ADMIN_COOKIE = 'portfolio_admin';
 
@@ -28,13 +41,13 @@ export async function createSession(): Promise<string> {
     .setProtectedHeader({ alg: 'HS256' })
     .setIssuedAt()
     .setExpirationTime('7d')
-    .sign(SECRET_KEY);
+    .sign(getSecretKey());
 }
 
 export async function verifySession(token: string | undefined): Promise<boolean> {
   if (!token) return false;
   try {
-    await jwtVerify(token, SECRET_KEY);
+    await jwtVerify(token, getSecretKey());
     return true;
   } catch {
     return false;
diff --git a/src/pages/api/content/[section].ts b/src/pages/api/content/[section].ts
index 17c1caf..09428c1 100644
--- a/src/pages/api/content/[section].ts
+++ b/src/pages/api/content/[section].ts
@@ -19,10 +19,8 @@ export const GET: APIRoute = async ({ params }) => {
       headers: { 'Content-Type': 'application/json' },
     });
   } catch (err) {
-    return new Response(
-      JSON.stringify({ error: 'load_failed', message: (err as Error).message }),
-      { status: 500 },
-    );
+    console.error('[content] load_failed', section, err);
+    return new Response(JSON.stringify({ error: 'load_failed' }), { status: 500 });
   }
 };
 
@@ -43,8 +41,10 @@ export const PUT: APIRoute = async ({ params, request }) => {
       headers: { 'Content-Type': 'application/json' },
     });
   } catch (err) {
+    console.error('[content] validation_failed', section, err);
+    const message = err instanceof Error && err.name === 'ZodError' ? err.message : undefined;
     return new Response(
-      JSON.stringify({ error: 'validation_failed', message: (err as Error).message }),
+      JSON.stringify(message ? { error: 'validation_failed', message } : { error: 'validation_failed' }),
       { status: 400 },
     );
   }
diff --git a/src/pages/api/upload.ts b/src/pages/api/upload.ts
index cc33b30..cf70241 100644
--- a/src/pages/api/upload.ts
+++ b/src/pages/api/upload.ts
@@ -6,7 +6,7 @@ import { join, extname, basename } from 'node:path';
 
 const UPLOAD_ROOT = join(process.cwd(), 'data', 'uploads');
 
-const IMAGE_EXT = new Set(['.png', '.jpg', '.jpeg', '.webp', '.svg', '.gif']);
+const IMAGE_EXT = new Set(['.png', '.jpg', '.jpeg', '.webp', '.gif']);
 const DOCUMENT_EXT = new Set(['.pdf']);
 
 const MAX_SIZE: Record<'image' | 'document', number> = {
@@ -43,11 +43,16 @@ export const POST: APIRoute = async ({ request }) => {
   const safeFolder = folder.replace(/[^a-zA-Z0-9_-]/g, '');
   const bucket = kind === 'document' ? 'assets' : 'img';
   const targetDir = safeFolder ? join(UPLOAD_ROOT, bucket, safeFolder) : join(UPLOAD_ROOT, bucket);
-  await mkdir(targetDir, { recursive: true });
-
   const filename = sanitize(file.name);
-  const buffer = Buffer.from(await file.arrayBuffer());
-  await writeFile(join(targetDir, filename), buffer);
+
+  try {
+    await mkdir(targetDir, { recursive: true });
+    const buffer = Buffer.from(await file.arrayBuffer());
+    await writeFile(join(targetDir, filename), buffer);
+  } catch (err) {
+    console.error('[upload] write_failed', err);
+    return new Response(JSON.stringify({ error: 'write_failed' }), { status: 500 });
+  }
 
   const url = `/api/files/${bucket}/${safeFolder ? safeFolder + '/' : ''}${filename}`;
   return new Response(JSON.stringify({ ok: true, url }), {
diff --git a/src/pages/index.astro b/src/pages/index.astro
index 2409681..0d440e6 100644
--- a/src/pages/index.astro
+++ b/src/pages/index.astro
@@ -9,7 +9,7 @@ import BootSequence from '../components/islands/BootSequence';
 import { Icon } from '@iconify-icon/react';
 import { loadAll } from '../lib/content';
 
-const { profile, skills, interests, site } = await loadAll();
+const { profile, skills, interests } = await loadAll();
 ---
 
 <BaseLayout>
diff --git a/tests/__stubs/astro-middleware.ts b/tests/__stubs/astro-middleware.ts
new file mode 100644
index 0000000..2f2fba6
--- /dev/null
+++ b/tests/__stubs/astro-middleware.ts
@@ -0,0 +1,3 @@
+// Stub pour `astro:middleware` (virtual module Astro non résolu en environnement Vitest).
+// On expose juste `defineMiddleware` qui retourne la fonction passée telle quelle.
+export const defineMiddleware = <T extends (...args: never[]) => unknown>(fn: T): T => fn;
diff --git a/tests/api/files.test.ts b/tests/api/files.test.ts
new file mode 100644
index 0000000..28c1e81
--- /dev/null
+++ b/tests/api/files.test.ts
@@ -0,0 +1,71 @@
+import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
+import { mkdtemp, mkdir, writeFile, rm } from 'node:fs/promises';
+import { join } from 'node:path';
+import { tmpdir } from 'node:os';
+import type { APIRoute } from 'astro';
+let workDir: string;
+let GET: APIRoute;
+
+// PNG 1x1 transparent minimal
+const PNG_1X1 = Buffer.from(
+  '89504e470d0a1a0a0000000d49484452000000010000000108060000001f15c4890000000a49444154789c63000100000005000100' +
+    '0d0a2db40000000049454e44ae426082',
+  'hex',
+);
+
+async function setupTmpRoot() {
+  workDir = await mkdtemp(join(tmpdir(), 'portfolio-files-'));
+  await mkdir(join(workDir, 'data', 'uploads', 'img'), { recursive: true });
+  await writeFile(join(workDir, 'data', 'uploads', 'img', 'test.png'), PNG_1X1);
+  vi.spyOn(process, 'cwd').mockReturnValue(workDir);
+  vi.resetModules();
+  const mod = await import('../../src/pages/api/files/[...path]');
+  GET = mod.GET as APIRoute;
+}
+
+async function cleanup() {
+  vi.restoreAllMocks();
+  if (workDir) await rm(workDir, { recursive: true, force: true });
+}
+
+beforeEach(setupTmpRoot);
+afterEach(cleanup);
+
+function call(pathParam: string) {
+  return GET({ params: { path: pathParam } } as unknown as Parameters<APIRoute>[0]) as Promise<Response>;
+}
+
+describe('GET /api/files/[...path]', () => {
+  it('retourne 404 si path vide', async () => {
+    const res = await call('');
+    expect(res.status).toBe(404);
+  });
+
+  it('bloque le path traversal classique (../../etc/passwd)', async () => {
+    const res = await call('../../etc/passwd');
+    expect(res.status).toBe(403);
+  });
+
+  it('bloque le path traversal imbriqué (img/../../../etc/passwd)', async () => {
+    const res = await call('img/../../../etc/passwd');
+    expect(res.status).toBe(403);
+  });
+
+  it('chemin absolu (/etc/passwd) est aplati dans UPLOADS_ROOT → 404 sans accès au vrai /etc/passwd', async () => {
+    const res = await call('/etc/passwd');
+    expect(res.status).toBe(404);
+  });
+
+  it('retourne 404 sur un fichier inexistant dans uploads', async () => {
+    const res = await call('img/missing.png');
+    expect(res.status).toBe(404);
+  });
+
+  it('sert un fichier valide avec le bon Content-Type', async () => {
+    const res = await call('img/test.png');
+    expect(res.status).toBe(200);
+    expect(res.headers.get('Content-Type')).toBe('image/png');
+    const body = Buffer.from(await res.arrayBuffer());
+    expect(body.equals(PNG_1X1)).toBe(true);
+  });
+});
diff --git a/tests/api/upload.test.ts b/tests/api/upload.test.ts
new file mode 100644
index 0000000..9d99b51
--- /dev/null
+++ b/tests/api/upload.test.ts
@@ -0,0 +1,98 @@
+import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
+import { mkdtemp, mkdir, stat, rm } from 'node:fs/promises';
+import { join } from 'node:path';
+import { tmpdir } from 'node:os';
+import type { APIRoute } from 'astro';
+let workDir: string;
+let POST: APIRoute;
+
+async function setupTmpRoot() {
+  workDir = await mkdtemp(join(tmpdir(), 'portfolio-upload-'));
+  await mkdir(join(workDir, 'data', 'uploads'), { recursive: true });
+  vi.spyOn(process, 'cwd').mockReturnValue(workDir);
+  vi.resetModules();
+  const mod = await import('../../src/pages/api/upload');
+  POST = mod.POST as APIRoute;
+}
+
+async function cleanup() {
+  vi.restoreAllMocks();
+  if (workDir) await rm(workDir, { recursive: true, force: true });
+}
+
+beforeEach(setupTmpRoot);
+afterEach(cleanup);
+
+function call(form: FormData) {
+  const request = new Request('http://localhost/api/upload', { method: 'POST', body: form });
+  return POST({ request } as unknown as Parameters<APIRoute>[0]) as Promise<Response>;
+}
+
+describe('POST /api/upload', () => {
+  it('400 no_file quand aucun fichier', async () => {
+    const res = await call(new FormData());
+    expect(res.status).toBe(400);
+    expect(await res.json()).toEqual({ error: 'no_file' });
+  });
+
+  it('400 invalid_extension sur .exe', async () => {
+    const form = new FormData();
+    form.append('file', new File(['x'], 'malware.exe', { type: 'application/octet-stream' }));
+    const res = await call(form);
+    expect(res.status).toBe(400);
+    expect(await res.json()).toEqual({ error: 'invalid_extension' });
+  });
+
+  it('400 invalid_extension sur .svg (retiré pour anti-XSS)', async () => {
+    const form = new FormData();
+    form.append('file', new File(['<svg/>'], 'evil.svg', { type: 'image/svg+xml' }));
+    const res = await call(form);
+    expect(res.status).toBe(400);
+    expect(await res.json()).toEqual({ error: 'invalid_extension' });
+  });
+
+  it('400 file_too_large quand image > 5 MB', async () => {
+    const form = new FormData();
+    const bigBuffer = new Uint8Array(5 * 1024 * 1024 + 1);
+    form.append('file', new File([bigBuffer], 'big.png', { type: 'image/png' }));
+    const res = await call(form);
+    expect(res.status).toBe(400);
+    expect(await res.json()).toEqual({ error: 'file_too_large' });
+  });
+
+  it('200 ok sur une image PNG valide', async () => {
+    const form = new FormData();
+    form.append('file', new File([new Uint8Array(1024)], 'photo.png', { type: 'image/png' }));
+    const res = await call(form);
+    expect(res.status).toBe(200);
+    const body = await res.json();
+    expect(body.ok).toBe(true);
+    expect(body.url).toBe('/api/files/img/photo.png');
+    const written = await stat(join(workDir, 'data', 'uploads', 'img', 'photo.png'));
+    expect(written.size).toBe(1024);
+  });
+
+  it('200 ok sur un PDF avec kind=document → bucket assets', async () => {
+    const form = new FormData();
+    form.append('file', new File([new Uint8Array(2048)], 'cv.pdf', { type: 'application/pdf' }));
+    form.append('kind', 'document');
+    const res = await call(form);
+    expect(res.status).toBe(200);
+    const body = await res.json();
+    expect(body.url).toBe('/api/files/assets/cv.pdf');
+    const written = await stat(join(workDir, 'data', 'uploads', 'assets', 'cv.pdf'));
+    expect(written.size).toBe(2048);
+  });
+
+  it('sanitize folder : "evil/../etc" → "eviletc" (caractères non alphanum retirés)', async () => {
+    const form = new FormData();
+    form.append('file', new File([new Uint8Array(10)], 'a.png', { type: 'image/png' }));
+    form.append('folder', 'evil/../etc');
+    const res = await call(form);
+    expect(res.status).toBe(200);
+    const body = await res.json();
+    expect(body.url).toBe('/api/files/img/eviletc/a.png');
+    const written = await stat(join(workDir, 'data', 'uploads', 'img', 'eviletc', 'a.png'));
+    expect(written.size).toBe(10);
+  });
+});
diff --git a/tests/lib/auth.test.ts b/tests/lib/auth.test.ts
new file mode 100644
index 0000000..ae24a25
--- /dev/null
+++ b/tests/lib/auth.test.ts
@@ -0,0 +1,47 @@
+import { describe, it, expect } from 'vitest';
+import { SignJWT } from 'jose';
+import { createSession, verifySession, verifyPassword } from '../../src/lib/auth';
+
+describe('verifyPassword', () => {
+  it('accepte le mot de passe correct', async () => {
+    expect(await verifyPassword('test-password-123')).toBe(true);
+  });
+
+  it('rejette un mauvais mot de passe', async () => {
+    expect(await verifyPassword('wrong')).toBe(false);
+  });
+
+  it('rejette un mot de passe vide', async () => {
+    expect(await verifyPassword('')).toBe(false);
+  });
+});
+
+describe('verifySession', () => {
+  it('rejette un token undefined', async () => {
+    expect(await verifySession(undefined)).toBe(false);
+  });
+
+  it('rejette un token vide', async () => {
+    expect(await verifySession('')).toBe(false);
+  });
+
+  it('rejette un token mal formé', async () => {
+    expect(await verifySession('not.a.jwt')).toBe(false);
+  });
+
+  it('rejette un JWT signé avec un autre secret', async () => {
+    const otherKey = new TextEncoder().encode('different-secret-of-32-chars-min-aaaa');
+    const token = await new SignJWT({ role: 'admin' })
+      .setProtectedHeader({ alg: 'HS256' })
+      .setIssuedAt()
+      .setExpirationTime('7d')
+      .sign(otherKey);
+    expect(await verifySession(token)).toBe(false);
+  });
+
+  it('round-trip : createSession puis verifySession → true', async () => {
+    const token = await createSession();
+    expect(token).toMatch(/^eyJ/);
+    expect(await verifySession(token)).toBe(true);
+  });
+});
diff --git a/tests/lib/content.test.ts b/tests/lib/content.test.ts
new file mode 100644
index 0000000..a491f2a
--- /dev/null
+++ b/tests/lib/content.test.ts
@@ -0,0 +1,77 @@
+import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
+import { mkdtemp, mkdir, readFile, writeFile, rm, copyFile, readdir } from 'node:fs/promises';
+import { join, resolve } from 'node:path';
+import { tmpdir } from 'node:os';
+
+const PROJECT_ROOT = resolve(import.meta.dirname, '..', '..');
+const REAL_SEED_DIR = join(PROJECT_ROOT, 'public', 'content');
+let workDir: string;
+type ContentModule = typeof import('../../src/lib/content');
+let content: ContentModule;
+
+async function setupTmpRoot() {
+  workDir = await mkdtemp(join(tmpdir(), 'portfolio-content-'));
+  await mkdir(join(workDir, 'data', 'content'), { recursive: true });
+  const tmpSeedDir = join(workDir, 'public', 'content');
+  await mkdir(tmpSeedDir, { recursive: true });
+  for (const file of await readdir(REAL_SEED_DIR)) {
+    await copyFile(join(REAL_SEED_DIR, file), join(tmpSeedDir, file));
+  }
+  vi.spyOn(process, 'cwd').mockReturnValue(workDir);
+  vi.resetModules();
+  content = await import('../../src/lib/content');
+}
+
+async function cleanup() {
+  vi.restoreAllMocks();
+  if (workDir) await rm(workDir, { recursive: true, force: true });
+}
+
+beforeEach(setupTmpRoot);
+afterEach(cleanup);
+
+describe('loadContent', () => {
+  it('copie le seed depuis public/content quand data/content/<key>.json est absent', async () => {
+    const profile = await content.loadContent('profile');
+    expect(profile.name).toBeTruthy();
+    const dataFile = await readFile(join(workDir, 'data', 'content', 'profile.json'), 'utf-8');
+    expect(JSON.parse(dataFile).name).toBe(profile.name);
+  });
+
+  it('lit data/content/<key>.json quand il existe (pas le seed)', async () => {
+    const seed = JSON.parse(
+      await readFile(join(workDir, 'public', 'content', 'profile.json'), 'utf-8'),
+    );
+    const customized = { ...seed, name: 'CustomFromData' };
+    await writeFile(
+      join(workDir, 'data', 'content', 'profile.json'),
+      JSON.stringify(customized),
+      'utf-8',
+    );
+    const profile = await content.loadContent('profile');
+    expect(profile.name).toBe('CustomFromData');
+  });
+});
+
+describe('saveContent', () => {
+  it('écrit data/content/<key>.json et retourne les données validées', async () => {
+    const seed = JSON.parse(
+      await readFile(join(workDir, 'public', 'content', 'profile.json'), 'utf-8'),
+    );
+    const updated = { ...seed, name: 'NouveauNom' };
+    const saved = await content.saveContent('profile', updated);
+    expect(saved.name).toBe('NouveauNom');
+    const onDisk = JSON.parse(
+      await readFile(join(workDir, 'data', 'content', 'profile.json'), 'utf-8'),
+    );
+    expect(onDisk.name).toBe('NouveauNom');
+  });
+
+  it('rejette un payload invalide (ZodError)', async () => {
+    await expect(content.saveContent('profile', { bogus: true })).rejects.toThrow();
+  });
+
+  it('rejette null', async () => {
+    await expect(content.saveContent('profile', null)).rejects.toThrow();
+  });
+});
diff --git a/tests/middleware.test.ts b/tests/middleware.test.ts
new file mode 100644
index 0000000..d80a594
--- /dev/null
+++ b/tests/middleware.test.ts
@@ -0,0 +1,94 @@
+import { describe, it, expect } from 'vitest';
+import { onRequest } from '../src/middleware';
+import { createSession, ADMIN_COOKIE } from '../src/lib/auth';
+
+const NEXT_SENTINEL = new Response('next-ok', { status: 200 });
+const next = async () => NEXT_SENTINEL;
+
+function makeContext(url: string, cookieValue?: string) {
+  return {
+    url: new URL(url),
+    cookies: {
+      get: (name: string) =>
+        name === ADMIN_COOKIE && cookieValue !== undefined ? { value: cookieValue } : undefined,
+    },
+    redirect: (path: string) =>
+      new Response(null, { status: 302, headers: { Location: path } }),
+  } as Parameters<typeof onRequest>[0];
+}
+
+async function run(url: string, cookieValue?: string) {
+  return (await onRequest(makeContext(url, cookieValue), next as Parameters<typeof onRequest>[1])) as Response;
+}
+
+describe('middleware — routes publiques', () => {
+  it('/ sans cookie → next', async () => {
+    const res = await run('http://localhost/');
+    expect(res).toBe(NEXT_SENTINEL);
+  });
+
+  it('/admin/login sans cookie → next (page de login publique)', async () => {
+    const res = await run('http://localhost/admin/login');
+    expect(res).toBe(NEXT_SENTINEL);
+  });
+
+  it('/api/auth/login sans cookie → next (route publique)', async () => {
+    const res = await run('http://localhost/api/auth/login');
+    expect(res).toBe(NEXT_SENTINEL);
+  });
+});
+
+describe('middleware — pages admin', () => {
+  it('/admin sans cookie → redirect /admin/login', async () => {
+    const res = await run('http://localhost/admin');
+    expect(res.status).toBe(302);
+    expect(res.headers.get('Location')).toBe('/admin/login');
+  });
+
+  it('/admin/projets sans cookie → redirect /admin/login', async () => {
+    const res = await run('http://localhost/admin/projets');
+    expect(res.status).toBe(302);
+    expect(res.headers.get('Location')).toBe('/admin/login');
+  });
+
+  it('/admin/projets avec token valide → next', async () => {
+    const token = await createSession();
+    const res = await run('http://localhost/admin/projets', token);
+    expect(res).toBe(NEXT_SENTINEL);
+  });
+
+  it('/admin/projets avec token invalide → redirect /admin/login', async () => {
+    const res = await run('http://localhost/admin/projets', 'not.a.real.jwt');
+    expect(res.status).toBe(302);
+    expect(res.headers.get('Location')).toBe('/admin/login');
+  });
+});
+
+describe('middleware — APIs admin', () => {
+  it('/api/content/profile sans cookie → 401 JSON', async () => {
+    const res = await run('http://localhost/api/content/profile');
+    expect(res.status).toBe(401);
+    expect(await res.json()).toEqual({ error: 'unauthorized' });
+  });
+
+  it('/api/upload sans cookie → 401 JSON', async () => {
+    const res = await run('http://localhost/api/upload');
+    expect(res.status).toBe(401);
+  });
+
+  it('/api/auth/logout sans cookie → 401 JSON', async () => {
+    const res = await run('http://localhost/api/auth/logout');
+    expect(res.status).toBe(401);
+  });
+
+  it('/api/content/profile avec token invalide → 401 JSON', async () => {
+    const res = await run('http://localhost/api/content/profile', 'garbage');
+    expect(res.status).toBe(401);
+  });
+
+  it('/api/content/profile avec token valide → next', async () => {
+    const token = await createSession();
+    const res = await run('http://localhost/api/content/profile', token);
+    expect(res).toBe(NEXT_SENTINEL);
+  });
+});
diff --git a/tests/setup.ts b/tests/setup.ts
new file mode 100644
index 0000000..cde61b8
--- /dev/null
+++ b/tests/setup.ts
@@ -0,0 +1,6 @@
+// Injection des env vars AVANT tout import des modules `src/`.
+// `src/lib/auth.ts` snapshote ADMIN_PASSWORD_HASH et ADMIN_JWT_SECRET au top-level.
+//
+// Hash bcrypt cost=4 du mot de passe 'test-password-123' (cost réduit pour la rapidité).
+process.env.ADMIN_PASSWORD_HASH = '$2b$04$T.yij5GLkm.PKoC.YD5JfedQWRgtrymdp.Nk2U16LdUSkkjonMJ1C';
+process.env.ADMIN_JWT_SECRET = 'test-jwt-secret-at-least-32-characters-long-aaaa';
diff --git a/vitest.config.ts b/vitest.config.ts
new file mode 100644
index 0000000..515777c
--- /dev/null
+++ b/vitest.config.ts
@@ -0,0 +1,22 @@
+import { defineConfig } from 'vitest/config';
+import { fileURLToPath } from 'node:url';
+
+export default defineConfig({
+  resolve: {
+    alias: {
+      'astro:middleware': fileURLToPath(new URL('./tests/__stubs/astro-middleware.ts', import.meta.url)),
+    },
+  },
+  test: {
+    environment: 'node',
+    globals: false,
+    pool: 'forks',
+    setupFiles: ['./tests/setup.ts'],
+    include: ['tests/**/*.test.ts'],
+    coverage: {
+      provider: 'v8',
+      include: ['src/lib/**', 'src/middleware.ts', 'src/pages/api/**'],
+      reporter: ['text', 'html'],
+    },
+  },
+});