RBAC via casbin

config/casbin/model.conf

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+# Casbin access model for the storefront.
+#
+# Request is (subject, object, action) = (role, request-path, HTTP-method);
+# axum-casbin supplies path + method automatically and the subject comes from
+# our JWT-derived CasbinVals (see src/shared/rbac.rs).
+#
+# Deny-override: every request is allowed unless a matching policy line marks it
+# `deny`. That keeps the public storefront fully open and lets the policy file
+# carve out the protected `/admin/*` subtree for non-admins only.
+
+[request_definition]
+r = sub, obj, act
+
+[policy_definition]
+p = sub, obj, act, eft
+
+[role_definition]
+g = _, _
+
+[policy_effect]
+e = !some(where (p.eft == deny))
+
+[matchers]
+m = (r.sub == p.sub || g(r.sub, p.sub)) && keyMatch(r.obj, p.obj) && regexMatch(r.act, p.act)

config/casbin/policy.csv

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+# Authorization policy. Format: p, subject(role), object(path-pattern), action(method-regex), effect
+#
+# DECISION: this app intentionally runs with a SINGLE hardcoded admin (the user
+# whose email matches ADMIN_EMAIL in .env, via guard::is_admin / admin_seeder).
+# Everyone else is `customer` (logged in) or `anonymous` (not). There is no
+# stored `role` column yet. This is a deliberate choice for current scale, not a
+# limitation of the wiring — see src/shared/rbac.rs for the upgrade path.
+#
+# Deny everyone except admins under the admin subtree. `keyMatch` treats the
+# trailing `*` as "anything after /admin/", so /admin/dashboard, /admin/orders/5
+# etc. are all covered; the bare /admin entry point stays open so it can redirect
+# to /login. Admins match no deny rule and so are allowed through.
+#
+# To grow this: give users a real role, emit it as the subject in
+# src/shared/rbac.rs, then add `p` lines (allow/deny) and `g, <user>, <role>`
+# mappings here.
+p, customer, /admin/*, .*, deny
+p, anonymous, /admin/*, .*, deny
+# Admin-only endpoints that live outside the /admin/* subtree: the admin JSON
+# API and the image upload. Public image serving (/images/{filename}) is GET and
+# not matched here, so it stays open.
+p, customer, /api/admin/*, .*, deny
+p, anonymous, /api/admin/*, .*, deny
+p, customer, /images/upload, .*, deny
+p, anonymous, /images/upload, .*, deny