feat: Light mode default, auth, Posts rename, display scaling, TinyMCE improvements

Views/Devices/Create.cshtml

@@ -1,20 +1,16 @@
 @model Device
-@{ ViewData["Title"] = "New Kitten"; }
-<div class="row justify-content-center">
-    <div class="col-md-8 col-lg-6">
-        <div class="card"><div class="card-body">
-            <form asp-action="Create" method="post">
-                @Html.AntiForgeryToken()
-                <div class="mb-3"><label asp-for="Name" class="form-label">Display Name *</label><input asp-for="Name" class="form-control" placeholder="e.g. Front of House" required /><span asp-validation-for="Name" class="text-danger"></span></div>
-                <div class="mb-3"><label asp-for="Slug" class="form-label">URL Slug *</label><div class="input-group"><span class="input-group-text">/</span><input asp-for="Slug" class="form-control font-monospace" placeholder="frontofhouse" /></div><div class="form-text">Lowercase, no spaces. Auto-generated from name if left empty.</div><span asp-validation-for="Slug" class="text-danger"></span></div>
-                <div class="row g-3 mb-3"><div class="col-6"><label asp-for="ResolutionWidth" class="form-label">Width (px)</label><input asp-for="ResolutionWidth" class="form-control" type="number" min="320" max="7680" /></div><div class="col-6"><label asp-for="ResolutionHeight" class="form-label">Height (px)</label><input asp-for="ResolutionHeight" class="form-control" type="number" min="240" max="4320" /></div></div>
-                <div class="mb-3"><label class="form-label">Quick Presets</label><div class="d-flex flex-wrap gap-2"><button type="button" class="btn btn-sm btn-outline-secondary" onclick="setRes(1920,1080)">1080p</button><button type="button" class="btn btn-sm btn-outline-secondary" onclick="setRes(3840,2160)">4K</button><button type="button" class="btn btn-sm btn-outline-secondary" onclick="setRes(1080,1920)">Portrait</button><button type="button" class="btn btn-sm btn-outline-secondary" onclick="setRes(1280,720)">720p</button></div></div>
-                <div class="mb-4"><label asp-for="Transition" class="form-label">Transition Effect</label><select asp-for="Transition" class="form-select"><option value="fade">Fade</option><option value="slide">Slide</option><option value="none">None</option></select></div>
-                <div class="d-grid gap-2"><button type="submit" class="btn btn-primary btn-lg"><i class="bi bi-check-lg me-1"></i>Create Kitten</button><a href="/admin/devices" class="btn btn-outline-secondary">Cancel</a></div>
-            </form>
-        </div></div>
-    </div>
-</div>
+@{ ViewData["Title"] = "New Post"; }
+<div class="row justify-content-center"><div class="col-md-8 col-lg-6"><div class="card"><div class="card-body">
+    <form asp-action="Create" method="post">
+        @Html.AntiForgeryToken()
+        <div class="mb-3"><label asp-for="Name" class="form-label">Display Name *</label><input asp-for="Name" class="form-control" placeholder="e.g. Front of House" required /><span asp-validation-for="Name" class="text-danger"></span></div>
+        <div class="mb-3"><label asp-for="Slug" class="form-label">URL Slug *</label><div class="input-group"><span class="input-group-text">/</span><input asp-for="Slug" class="form-control font-monospace" placeholder="frontofhouse" /></div><div class="form-text">Lowercase, no spaces. Auto-generated from name if left empty.</div><span asp-validation-for="Slug" class="text-danger"></span></div>
+        <div class="row g-3 mb-3"><div class="col-6"><label asp-for="ResolutionWidth" class="form-label">Width (px)</label><input asp-for="ResolutionWidth" class="form-control" type="number" min="320" max="7680" /></div><div class="col-6"><label asp-for="ResolutionHeight" class="form-label">Height (px)</label><input asp-for="ResolutionHeight" class="form-control" type="number" min="240" max="4320" /></div></div>
+        <div class="mb-3"><label class="form-label">Quick Presets</label><div class="d-flex flex-wrap gap-2"><button type="button" class="btn btn-sm btn-outline-secondary" onclick="setRes(1920,1080)">1080p</button><button type="button" class="btn btn-sm btn-outline-secondary" onclick="setRes(3840,2160)">4K</button><button type="button" class="btn btn-sm btn-outline-secondary" onclick="setRes(1080,1920)">Portrait</button><button type="button" class="btn btn-sm btn-outline-secondary" onclick="setRes(1280,720)">720p</button></div></div>
+        <div class="mb-4"><label asp-for="Transition" class="form-label">Transition Effect</label><select asp-for="Transition" class="form-select"><option value="fade">Fade</option><option value="slide">Slide</option><option value="none">None</option></select></div>
+        <div class="d-grid gap-2"><button type="submit" class="btn btn-primary btn-lg"><i class="bi bi-check-lg me-1"></i>Create Post</button><a href="/admin/devices" class="btn btn-outline-secondary">Cancel</a></div>
+    </form>
+</div></div></div></div>
 @section Scripts {
     <script>
         function setRes(w,h){document.getElementById('ResolutionWidth').value=w;document.getElementById('ResolutionHeight').value=h;}

Views/Devices/Delete.cshtml

@@ -3,7 +3,7 @@
 <div class="row justify-content-center"><div class="col-md-6"><div class="card border-danger">
     <div class="card-header bg-danger text-white"><h5 class="mb-0"><i class="bi bi-exclamation-triangle me-2"></i>Confirm Deletion</h5></div>
     <div class="card-body">
-        <p>Are you sure you want to delete the kitten <strong>"@Model.Name"</strong>?</p>
+        <p>Are you sure you want to delete the post <strong>"@Model.Name"</strong>?</p>
         <p class="text-muted">URL: <code>/@Model.Slug</code> · @Model.DeviceSlides.Count slide(s) assigned</p>
         <p class="text-muted">This will remove the device and its playlist. Slides themselves will not be deleted.</p>
         <form asp-action="Delete" method="post">

Views/Devices/Index.cshtml

@@ -1,8 +1,8 @@
 @model List<Device>
-@{ ViewData["Title"] = "Kittens (Devices)"; }
+@{ ViewData["Title"] = "Posts (Devices)"; }
 
 @section HeaderActions {
-    <a href="/admin/devices/create" class="btn btn-primary"><i class="bi bi-plus-lg me-1"></i>New Kitten</a>
+    <a href="/admin/devices/create" class="btn btn-primary"><i class="bi bi-plus-lg me-1"></i>New Post</a>
 }
 
 @if (Model.Any())
@@ -42,8 +42,8 @@ else
 {
     <div class="empty-state">
         <i class="bi bi-display" style="font-size:3em;"></i>
-        <h4 class="mt-3">No kittens yet</h4>
+        <h4 class="mt-3">No posts yet</h4>
         <p class="text-muted">Create your first display device.</p>
-        <a href="/admin/devices/create" class="btn btn-primary"><i class="bi bi-plus-lg me-1"></i>Create Kitten</a>
+        <a href="/admin/devices/create" class="btn btn-primary"><i class="bi bi-plus-lg me-1"></i>Create Post</a>
     </div>
 }

Views/Devices/Playlist.cshtml

@@ -53,7 +53,7 @@
         </div>
     </div>
     <div class="col-lg-4">
-        <div class="card mb-4"><div class="card-header"><h6 class="mb-0">Kitten Info</h6></div><div class="card-body"><p class="mb-1"><strong>@Model.Name</strong></p><p class="mb-1 text-muted"><code>/@Model.Slug</code></p><p class="mb-0 text-muted">@(Model.ResolutionWidth)x@(Model.ResolutionHeight) · @Model.Transition</p></div></div>
+        <div class="card mb-4"><div class="card-header"><h6 class="mb-0">Post Info</h6></div><div class="card-body"><p class="mb-1"><strong>@Model.Name</strong></p><p class="mb-1 text-muted"><code>/@Model.Slug</code></p><p class="mb-0 text-muted">@(Model.ResolutionWidth)x@(Model.ResolutionHeight) · @Model.Transition</p></div></div>
         <div class="card"><div class="card-header"><h6 class="mb-0"><i class="bi bi-plus-circle me-1"></i>Add Meow</h6></div><div class="card-body">
             @if (availableSlides != null && availableSlides.Any())
             {