granthi-sync v1: granthi-link provisioning service + client daemon + tests

Co-Authored-By: Claude Fable 5 <[email protected]>

server/config.example.json

@@ -0,0 +1,10 @@
+{
+  "gitea_base": "http://127.0.0.1:3041",
+  "public_gitea_base": "http://100.111.127.127:3041",
+  "zitadel_userinfo": "https://id.shre.ai/oidc/v1/userinfo",
+  "admin_token": "MINT-VIA: docker exec -u git gitea-beta-gitea-1 gitea admin user generate-access-token --username nirpa --scopes write:admin,write:user,write:repository --raw",
+  "admin_login": "nirpa",
+  "admin_password": "FROM /opt/gitea-beta/.admin-creds (required: Gitea 1.27 token minting only works via basic auth + Sudo header)",
+  "binds": [["127.0.0.1", 3042], ["100.111.127.127", 3042]],
+  "test_mode": false
+}