diff --git a/internal/server/http/ui_users.go b/internal/server/http/ui_users.go
index 08ee401..f9c1eec 100644
--- a/internal/server/http/ui_users.go
+++ b/internal/server/http/ui_users.go
@@ -51,6 +51,7 @@ type userRow struct {
 	LastLoginAt        string // pre-formatted "2006-01-02 15:04:05" or "never"
 	Disabled           bool
 	MustChangePassword bool
+	AuthSource         string
 }
 
 func (s *Server) handleUIUsersList(w stdhttp.ResponseWriter, r *stdhttp.Request) {
@@ -104,6 +105,7 @@ func (s *Server) handleUIUsersList(w stdhttp.ResponseWriter, r *stdhttp.Request)
 			Role: string(ux.Role), LastLoginAt: ll,
 			Disabled:           ux.DisabledAt != nil,
 			MustChangePassword: ux.MustChangePassword,
+			AuthSource:         ux.AuthSource,
 		})
 	}
 
@@ -157,7 +159,8 @@ type userFormPage struct {
 	// to add a username that already exists (disabled). Triggers a
 	// banner on the edit page explaining why and steering them at
 	// the Re-enable button. See handleUIUserNewPost's collision branch.
-	Reenable bool
+	Reenable   bool
+	AuthSource string
 }
 
 func (s *Server) handleUIUserNewGet(w stdhttp.ResponseWriter, r *stdhttp.Request) {
@@ -294,8 +297,9 @@ func (s *Server) handleUIUserEditGet(w stdhttp.ResponseWriter, r *stdhttp.Reques
 	view.Page = userFormPage{
 		Mode: "edit", ID: target.ID, Username: target.Username,
 		Email: em, Role: string(target.Role),
-		Disabled: target.DisabledAt != nil,
-		Reenable: r.URL.Query().Get("reenable") == "1",
+		Disabled:   target.DisabledAt != nil,
+		Reenable:   r.URL.Query().Get("reenable") == "1",
+		AuthSource: target.AuthSource,
 	}
 	_ = s.deps.UI.Render(w, "user_edit", view)
 }
@@ -315,6 +319,10 @@ func (s *Server) handleUIUserEditPost(w stdhttp.ResponseWriter, r *stdhttp.Reque
 		stdhttp.NotFound(w, r)
 		return
 	}
+	if target.AuthSource == "oidc" {
+		stdhttp.Error(w, "OIDC users cannot have role/email edited locally", stdhttp.StatusForbidden)
+		return
+	}
 	role, ok := validRole(r.PostForm.Get("role"))
 	if !ok {
 		stdhttp.Error(w, "bad role", stdhttp.StatusBadRequest)
diff --git a/web/templates/pages/user_edit.html b/web/templates/pages/user_edit.html
index 4014fad..9e8cd94 100644
--- a/web/templates/pages/user_edit.html
+++ b/web/templates/pages/user_edit.html
@@ -67,9 +67,20 @@
     {{end}}
   {{else}}
     {{/* new + edit form. */}}
+    {{if and (eq $page.Mode "edit") (eq $page.AuthSource "oidc")}}
+      <div class="panel rounded-[7px] p-4 mb-5 mt-7"
+           style="border-color: color-mix(in oklch, var(--accent), transparent 60%);
+                  background: color-mix(in oklch, var(--accent), transparent 95%);">
+        <div class="text-[12.5px] text-ink-mute leading-[1.6]">
+          This user is provisioned via OIDC. Username, role, and email are
+          managed by your IdP and refreshed on each sign-in. Disable /
+          Enable / Force logout still work locally.
+        </div>
+      </div>
+    {{end}}
     <form method="post"
           action="{{if eq $page.Mode "new"}}/settings/users/new{{else}}/settings/users/{{$page.ID}}/edit{{end}}"
-          class="panel mt-7 rounded-[7px] p-6 space-y-4">
+          class="panel rounded-[7px] p-6 space-y-4 {{if and (eq $page.Mode "edit") (eq $page.AuthSource "oidc")}}mt-3{{else}}mt-7{{end}}">
       <div>
         <label class="field-label" for="username">Username</label>
         <input id="username" name="username" type="text"
@@ -82,11 +93,13 @@
       <div>
         <label class="field-label" for="email">Email <span class="text-ink-fade font-normal">· optional</span></label>
         <input id="email" name="email" type="email" class="field"
+               {{if and (eq $page.Mode "edit") (eq $page.AuthSource "oidc")}}readonly disabled{{end}}
                value="{{$page.Email}}" autocomplete="off" />
       </div>
       <div>
         <label class="field-label" for="role">Role</label>
-        <select id="role" name="role" class="field">
+        <select id="role" name="role" class="field"
+                {{if and (eq $page.Mode "edit") (eq $page.AuthSource "oidc")}}disabled{{end}}>
           <option value="admin"    {{if eq $page.Role "admin"}}selected{{end}}>admin</option>
           <option value="operator" {{if eq $page.Role "operator"}}selected{{end}}>operator</option>
           <option value="viewer"   {{if eq $page.Role "viewer"}}selected{{end}}>viewer</option>
@@ -104,9 +117,11 @@
       <div class="panel mt-5 rounded-[7px] p-6">
         <div class="text-[12.5px] text-ink mb-3 font-medium">Other actions</div>
         <div class="flex gap-2 flex-wrap">
-          <form method="post" action="/settings/users/{{$page.ID}}/regenerate-setup">
-            <button type="submit" class="btn">Regenerate setup link</button>
-          </form>
+          {{if ne $page.AuthSource "oidc"}}
+            <form method="post" action="/settings/users/{{$page.ID}}/regenerate-setup">
+              <button type="submit" class="btn">Regenerate setup link</button>
+            </form>
+          {{end}}
           <form method="post" action="/settings/users/{{$page.ID}}/force-logout">
             <button type="submit" class="btn">Force logout</button>
           </form>
diff --git a/web/templates/pages/users.html b/web/templates/pages/users.html
index 6b411b4..6022c55 100644
--- a/web/templates/pages/users.html
+++ b/web/templates/pages/users.html
@@ -67,6 +67,7 @@
           {{if .Disabled}}<span class="tag" style="color: var(--ink-fade);">disabled</span>
           {{else if .MustChangePassword}}<span class="tag" style="color: var(--warn); border-color: color-mix(in oklch, var(--warn), transparent 60%); background: color-mix(in oklch, var(--warn), transparent 92%);">setup pending</span>
           {{else}}<span class="tag" style="color: var(--ok);">enabled</span>{{end}}
+          {{if eq .AuthSource "oidc"}}<span class="tag" style="color: var(--accent); border-color: color-mix(in oklch, var(--accent), transparent 60%); background: color-mix(in oklch, var(--accent), transparent 92%); margin-left: 4px;">oidc</span>{{end}}
         </div>
         <div class="text-right">
           <a href="/settings/users/{{.ID}}/edit" class="btn">Edit</a>