Add blog feature and fix broken test/build infra

BlogController was an empty stub with no view, so /blog 500'd on every
visit. Adds a real Post model, public listing/detail pages, and an admin
CRUD screen mirroring the existing Exercise admin pattern (image upload
or URL, auto-slug, publish toggle). Seeds 5 real posts so it's not empty
on launch.

Also fixes two things that were silently broken: phpunit.xml pointed
DB_DATABASE at a non-existent "testing" file with no DB_CONNECTION set,
and the stock ExampleTest had RefreshDatabase commented out - both meant
the test suite never actually ran successfully.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

app/Http/Controllers/Admin/PostController.php

@@ -0,0 +1,126 @@
+<?php
+
+namespace App\Http\Controllers\Admin;
+
+use App\Http\Controllers\Controller;
+use App\Models\Post;
+use Illuminate\Http\RedirectResponse;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Auth;
+use Illuminate\Support\Str;
+use Illuminate\View\View;
+
+class PostController extends Controller
+{
+    public function index(Request $request): View
+    {
+        $q = trim((string) $request->query('q', ''));
+        $posts = Post::query()
+            ->when($q !== '', function ($qb) use ($q) {
+                $qb->where('title', 'like', "%{$q}%")
+                   ->orWhere('slug', 'like', "%{$q}%");
+            })
+            ->latest('created_at')
+            ->paginate(20)
+            ->withQueryString();
+
+        return view('admin.posts.index', compact('posts', 'q'));
+    }
+
+    public function create(): View
+    {
+        return view('admin.posts.create');
+    }
+
+    public function store(Request $request): RedirectResponse
+    {
+        $data = $this->validateData($request);
+
+        $slug = trim((string) ($data['slug'] ?? ''));
+        if ($slug === '') {
+            $slug = $this->uniqueSlug($data['title']);
+        }
+
+        $coverImageValue = $data['cover_image'] ?? null;
+        if ($request->hasFile('cover_image_file')) {
+            $coverImageValue = $request->file('cover_image_file')->store('posts/covers', 'public');
+        }
+
+        Post::create([
+            'title' => $data['title'],
+            'slug' => $slug,
+            'excerpt' => $data['excerpt'] ?? null,
+            'body' => $data['body'],
+            'cover_image' => $coverImageValue,
+            'author_id' => Auth::id(),
+            'published_at' => $request->boolean('published') ? now() : null,
+        ]);
+
+        return redirect()->route('admin.posts.index')->with('status', 'Post created');
+    }
+
+    public function edit(Post $post): View
+    {
+        return view('admin.posts.edit', compact('post'));
+    }
+
+    public function update(Request $request, Post $post): RedirectResponse
+    {
+        $data = $this->validateData($request, $post->id);
+
+        $slug = trim((string) ($data['slug'] ?? ''));
+        if ($slug === '') {
+            $slug = $this->uniqueSlug($data['title'], $post->id);
+        }
+
+        $coverImageValue = $data['cover_image'] ?? $post->cover_image;
+        if ($request->hasFile('cover_image_file')) {
+            $coverImageValue = $request->file('cover_image_file')->store('posts/covers', 'public');
+        }
+
+        $post->update([
+            'title' => $data['title'],
+            'slug' => $slug,
+            'excerpt' => $data['excerpt'] ?? null,
+            'body' => $data['body'],
+            'cover_image' => $coverImageValue,
+            'published_at' => $request->boolean('published') ? ($post->published_at ?? now()) : null,
+        ]);
+
+        return redirect()->route('admin.posts.index')->with('status', 'Post updated');
+    }
+
+    public function destroy(Post $post): RedirectResponse
+    {
+        $post->delete();
+
+        return redirect()->route('admin.posts.index')->with('status', 'Post deleted');
+    }
+
+    protected function validateData(Request $request, ?int $ignoreId = null): array
+    {
+        return $request->validate([
+            'title' => ['required', 'string', 'max:255'],
+            'slug' => ['nullable', 'string', 'max:255', 'unique:posts,slug' . ($ignoreId ? ',' . $ignoreId : '')],
+            'excerpt' => ['nullable', 'string', 'max:500'],
+            'body' => ['required', 'string'],
+            'cover_image' => ['nullable', 'string', 'max:2048'],
+            'cover_image_file' => ['nullable', 'image', 'mimes:jpeg,jpg,png,webp,avif,gif', 'max:8192'],
+            'published' => ['nullable', 'boolean'],
+        ]);
+    }
+
+    protected function uniqueSlug(string $title, ?int $ignoreId = null): string
+    {
+        $base = Str::slug($title);
+        if ($base === '') { $base = 'post'; }
+        $slug = $base;
+        $i = 1;
+        while (Post::where('slug', $slug)
+            ->when($ignoreId, fn($q) => $q->where('id', '!=', $ignoreId))
+            ->exists()) {
+            $slug = $base . '-' . (++$i);
+        }
+        return $slug;
+    }
+}

app/Http/Controllers/AdminDashboardController.php

@@ -3,6 +3,7 @@
 namespace App\Http\Controllers;
 
 use App\Models\Exercise;
+use App\Models\Post;
 use App\Models\User;
 use App\Models\Workout;
 use App\Models\WorkoutSession;
@@ -19,6 +20,7 @@ class AdminDashboardController extends Controller
             'sessions' => WorkoutSession::count(),
             'exercises' => Exercise::count(),
             'yogaPoses' => YogaPose::count(),
+            'posts' => Post::count(),
         ];
 
         $recentUsers = User::latest()->limit(5)->get(['id','name','email','created_at']);

app/Http/Controllers/BlogController.php

@@ -2,9 +2,48 @@
 
 namespace App\Http\Controllers;
 
+use App\Models\Post;
 use Illuminate\Http\Request;
+use Illuminate\View\View;
 
 class BlogController extends Controller
 {
-    //
+    public function index(Request $request): View
+    {
+        $q = trim((string) $request->query('q', ''));
+
+        $posts = Post::query()
+            ->published()
+            ->with('author')
+            ->when($q !== '', function ($qb) use ($q) {
+                $qb->where(function ($sub) use ($q) {
+                    $sub->where('title', 'like', "%{$q}%")
+                        ->orWhere('excerpt', 'like', "%{$q}%");
+                });
+            })
+            ->latest('published_at')
+            ->paginate(9)
+            ->withQueryString();
+
+        return view('blog.index', [
+            'posts' => $posts,
+            'filters' => ['q' => $q],
+        ]);
+    }
+
+    public function show(Post $post): View
+    {
+        abort_unless($post->is_published, 404);
+
+        $post->load('author');
+
+        $relatedPosts = Post::query()
+            ->published()
+            ->where('id', '!=', $post->id)
+            ->latest('published_at')
+            ->limit(3)
+            ->get();
+
+        return view('blog.show', compact('post', 'relatedPosts'));
+    }
 }