fix(auth): corrections runtime LinkedIn OAuth (#88)

- Workaround nonce OIDC LinkedIn (non-conformité) : capture MissingClaimError après échange de code réussi et fetch userinfo séparément
- Ajout token_endpoint_auth_method: client_secret_post (requis par LinkedIn)
- suppress_callback_exceptions=True pour corriger les erreurs Dash multi-pages
- Suppression bouton déconnexion redondant sur /compte/admin et style hover incorrect sur la navbar

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

uv.lock

@@ -66,6 +66,19 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/64/b4/17d4b0b2a2dc85a6df63d1157e028ed19f90d4cd97c36717afef2bc2f395/attrs-26.1.0-py3-none-any.whl", hash = "sha256:c647aa4a12dfbad9333ca4e71fe62ddc36f4e63b2d260a37a8b83d2f043ac309", size = 67548, upload-time = "2026-03-19T14:22:23.645Z" },
 ]
 
+[[package]]
+name = "authlib"
+version = "1.7.2"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "cryptography" },
+    { name = "joserfc" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/36/98/7d93f30d029643c0275dbc0bd6d5a6f670661ee6c9a94d93af7ab4887600/authlib-1.7.2.tar.gz", hash = "sha256:2cea25fefcd4e7173bdf1372c0afc265c8034b23a8cd5dcb6a9164b826c64231", size = 176511, upload-time = "2026-05-06T08:10:23.116Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/fb/95/adcb68e20c34162e9135f370d6e31737719c2b6f94bc953fe7ed1f10fe21/authlib-1.7.2-py2.py3-none-any.whl", hash = "sha256:3e1faedc9d87e7d56a164eca3ccb6ace0d61b94abe83e92242f8dc8bba9b4a9f", size = 259548, upload-time = "2026-05-06T08:10:21.436Z" },
+]
+
 [[package]]
 name = "backports-datetime-fromisoformat"
 version = "2.0.3"
@@ -854,6 +867,7 @@ name = "decp-info"
 version = "2.8.0"
 source = { virtual = "." }
 dependencies = [
+    { name = "authlib" },
     { name = "boto3" },
     { name = "brevo-python" },
     { name = "cryptography" },
@@ -898,6 +912,7 @@ dev = [
 
 [package.metadata]
 requires-dist = [
+    { name = "authlib" },
     { name = "boto3" },
     { name = "brevo-python", specifier = "==5.0.0rc1" },
     { name = "cryptography" },
@@ -1316,6 +1331,18 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/14/2f/967ba146e6d58cf6a652da73885f52fc68001525b4197effc174321d70b4/jmespath-1.1.0-py3-none-any.whl", hash = "sha256:a5663118de4908c91729bea0acadca56526eb2698e83de10cd116ae0f4e97c64", size = 20419, upload-time = "2026-01-22T16:35:24.919Z" },
 ]
 
+[[package]]
+name = "joserfc"
+version = "1.7.1"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "cryptography" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/44/90/25cb27518750218e4f850be63d8bbb2343efaad1c01c3571aaa4b3c33bd7/joserfc-1.7.1.tar.gz", hash = "sha256:77d0b76514879c68c6f433bc5b7357a4ab72008ff1e33d8379fd11d72bd8ca81", size = 233181, upload-time = "2026-06-08T07:21:33.412Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/b3/00/fa62404c3e347f946faa13aa21085205f9cc06ad17671e37f81a51662ae8/joserfc-1.7.1-py3-none-any.whl", hash = "sha256:b3e3d655612e2e1ef67b2600f2f420e12e537b020208fab1761fad647319c164", size = 70423, upload-time = "2026-06-08T07:21:32.001Z" },
+]
+
 [[package]]
 name = "jsbeautifier"
 version = "1.15.4"