fix: use keyword args for TemplateResponse (Starlette 0.40+ compat)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app.py

@@ -109,7 +109,7 @@ async def dashboard(request: Request):
     conn.close()
 
     authenticated = scheduler.graph is not None and scheduler.graph.is_authenticated()
-    return templates.TemplateResponse("dashboard.html", {
+    return templates.TemplateResponse(name="dashboard.html", context={
         "request": request, "page": "dashboard",
         "devices": device_data, "authenticated": authenticated,
     })
@@ -126,7 +126,7 @@ async def users_page(request: Request):
         ORDER BY u.active DESC, u.display_name
     """).fetchall()
     conn.close()
-    return templates.TemplateResponse("users.html", {
+    return templates.TemplateResponse(name="users.html", context={
         "request": request, "page": "users", "users": users,
     })
 
@@ -196,7 +196,7 @@ async def devices_page(request: Request):
         "SELECT * FROM wled_devices ORDER BY name, hostname"
     ).fetchall()
     conn.close()
-    return templates.TemplateResponse("devices.html", {
+    return templates.TemplateResponse(name="devices.html", context={
         "request": request, "page": "devices", "devices": devices,
     })
 
@@ -265,7 +265,7 @@ async def assignments_page(request: Request):
     ).fetchall()
     conn.close()
 
-    return templates.TemplateResponse("assignments.html", {
+    return templates.TemplateResponse(name="assignments.html", context={
         "request": request, "page": "assignments",
         "assignments": assignments, "users": users, "devices": devices,
     })
@@ -305,7 +305,7 @@ async def colors_page(request: Request):
     conn = database.get_db()
     rules = conn.execute("SELECT * FROM color_rules ORDER BY status").fetchall()
     conn.close()
-    return templates.TemplateResponse("colors.html", {
+    return templates.TemplateResponse(name="colors.html", context={
         "request": request, "page": "colors", "rules": rules,
     })
 
@@ -362,7 +362,7 @@ async def add_color(
 async def settings_page(request: Request):
     settings = database.get_all_settings()
     authenticated = scheduler.graph is not None and scheduler.graph.is_authenticated()
-    return templates.TemplateResponse("settings.html", {
+    return templates.TemplateResponse(name="settings.html", context={
         "request": request, "page": "settings",
         "settings": settings, "authenticated": authenticated,
     })
@@ -401,7 +401,7 @@ async def log_page(request: Request):
         "SELECT * FROM activity_log ORDER BY id DESC LIMIT 200"
     ).fetchall()
     conn.close()
-    return templates.TemplateResponse("log.html", {
+    return templates.TemplateResponse(name="log.html", context={
         "request": request, "page": "log", "logs": logs,
     })