feat(l4d2-web): blueprint rename moves to footer modal — matches overlay/server pattern

Drops the inline Name input from the blueprint edit form. A Rename link
sits next to Delete in the page footer; clicking opens a one-line modal
that posts to a new POST /blueprints/<id>/rename route. The main edit
form keeps the current name as a hidden input so its full Save still
works unchanged.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

l4d2web/routes/blueprint_routes.py

@@ -142,6 +142,29 @@ def update_blueprint_form(blueprint_id: int) -> Response:
     return redirect(f"/blueprints/{blueprint_id}")
 
 
+@bp.post("/blueprints/<int:blueprint_id>/rename")
+@require_login
+def rename_blueprint(blueprint_id: int) -> Response:
+    user = current_user()
+    assert user is not None
+    name = request.form.get("name", "").strip()
+    if not name:
+        return Response("name is required", status=400)
+
+    with session_scope() as db:
+        blueprint = db.scalar(
+            select(BlueprintModel).where(
+                BlueprintModel.id == blueprint_id,
+                BlueprintModel.user_id == user.id,
+            )
+        )
+        if blueprint is None:
+            return Response(status=404)
+        blueprint.name = name
+
+    return redirect(f"/blueprints/{blueprint_id}")
+
+
 def _delete_blueprint(db, user_id: int, blueprint_id: int) -> Response | None:
     blueprint = db.scalar(
         select(BlueprintModel).where(

l4d2web/templates/blueprint_detail.html

@@ -9,7 +9,7 @@
   </div>
   <form method="post" action="/blueprints/{{ blueprint.id }}" class="stack">
     <input type="hidden" name="csrf_token" value="{{ session.get('csrf_token', '') }}">
-    <label><span class="section-title">Name</span><input name="name" value="{{ blueprint.name }}" required></label>
+    <input type="hidden" name="name" value="{{ blueprint.name }}">
     <label><span class="section-title">Arguments</span><textarea name="arguments" rows="2" spellcheck="false">{{ arguments | join('\n') }}</textarea></label>
     <span class="section-title">Overlays</span>
     <div class="overlay-picker">
@@ -58,8 +58,23 @@
 
 <div class="page-footer-actions">
   <button type="button" class="danger-outline" data-modal-open="delete-blueprint-modal">Delete blueprint</button>
+  <a href="#" class="link-button" data-modal-open="rename-blueprint-modal">Rename</a>
 </div>
 
+<dialog id="rename-blueprint-modal" class="modal" aria-labelledby="rename-blueprint-title">
+  <div class="modal-header">
+    <h2 id="rename-blueprint-title">Rename blueprint</h2>
+    <button type="button" class="modal-close" data-modal-close aria-label="Close">&times;</button>
+  </div>
+  <div class="modal-body">
+    <form method="post" action="/blueprints/{{ blueprint.id }}/rename" class="inline-save">
+      <input type="hidden" name="csrf_token" value="{{ session.get('csrf_token', '') }}">
+      <input name="name" value="{{ blueprint.name }}" required autofocus>
+      <button type="submit">Save</button>
+    </form>
+  </div>
+</dialog>
+
 <dialog id="delete-blueprint-modal" class="modal" aria-labelledby="delete-blueprint-title">
   <div class="modal-header">
     <h2 id="delete-blueprint-title">Delete blueprint "{{ blueprint.name }}"?</h2>