diff --git a/PLAN.md b/PLAN.md
index 74e6936..debd517 100644
--- a/PLAN.md
+++ b/PLAN.md
@@ -2,6 +2,20 @@
 
 A self-hosted error tracking application (inspired by [Bugsink](https://www.bugsink.com/) / Sentry) built on this Laravel 13 app.
 
+## Overview
+
+This is an **error tracking application similar to Sentry**, designed to receive and aggregate errors from applications running in production. Users integrate SDKs into their applications (PHP, JavaScript, Python, etc.), and those SDKs send error events **directly** to our tracking server in real-time when errors occur.
+
+### How It Works
+
+1. **SDK Integration**: Developers install a Sentry-compatible SDK in their application (e.g., `sentry/sentry-laravel` for Laravel, `@sentry/browser` for JavaScript, `sentry-python` for Python).
+2. **Configuration**: They configure the SDK with a DSN (Data Source Name) pointing to our tracking server.
+3. **Automatic Error Capture**: When an error occurs in their application, the SDK automatically captures the error context (stacktrace, breadcrumbs, user info, request details) and sends it to our server.
+4. **Real-Time Processing**: Our server receives the error payload, groups similar errors into issues, and displays them in a web dashboard.
+5. **Notifications**: Teams are notified when new issues occur or when resolved issues regress.
+
+This architecture means we don't need to build custom SDKs — we leverage the entire ecosystem of existing Sentry SDKs by implementing a Sentry-compatible ingestion API.
+
 ## Stack Summary
 
 | Layer | Technology |
@@ -12,6 +26,52 @@ A self-hosted error tracking application (inspired by [Bugsink](https://www.bugs
 | Queue | Database driver (upgrade to Redis for production) |
 | Auth | Laravel Breeze (installed) |
 
+## SDK Support & Multi-Language Integration
+
+### Supported Languages & Frameworks
+
+Our tracking server accepts error events from **any Sentry-compatible SDK**, enabling broad language and framework support without custom development:
+
+| Language/Platform | Official Sentry SDK | Notes |
+|-------------------|---------------------|-------|
+| **PHP** | `sentry/sentry-laravel`, `sentry/sentry-symfony`, `sentry/sentry` | Full Laravel, Symfony, and native PHP support |
+| **JavaScript/Node.js** | `@sentry/browser`, `@sentry/node`, `@sentry/react`, `@sentry/vue`, `@sentry/angular` | Frontend and backend JS, plus framework-specific integrations |
+| **Python** | `sentry-sdk` | Django, Flask, FastAPI, etc. |
+| **Ruby** | `sentry-ruby`, `sentry-rails` | Rails and native Ruby support |
+| **Java** | `io.sentry:sentry` | Spring, Android, and JVM languages |
+| **Go** | `github.com/getsentry/sentry-go` | Native Go support |
+| **.NET/C#** | `Sentry.AspNetCore`, `Sentry` | ASP.NET Core, .NET Framework |
+| **Mobile** | `@sentry/react-native`, `sentry-android`, `sentry-cocoa` | React Native, Android (Java/Kotlin), iOS (Swift/Obj-C) |
+| **Rust** | `sentry` | Native Rust support |
+| **Elixir** | `sentry` | Phoenix and Elixir support |
+
+### SDK Configuration Example
+
+Users simply point the official Sentry SDK to our server:
+
+**PHP (Laravel):**
+```php
+// config/sentry.php
+'dsn' => 'https://<public_key>@trackbugs.example.com/api/<project_id>/store/',
+```
+
+**JavaScript:**
+```javascript
+Sentry.init({
+  dsn: 'https://<public_key>@trackbugs.example.com/api/<project_id>/store/',
+});
+```
+
+**Python:**
+```python
+import sentry_sdk
+sentry_sdk.init(
+    dsn="https://<public_key>@trackbugs.example.com/api/<project_id>/store/"
+)
+```
+
+No custom SDK development is required — our server implements the Sentry protocol, so all existing SDKs work out of the box.
+
 ---
 
 ## Phase 1 — Foundation & Auth
@@ -206,19 +266,19 @@ Clients configure this DSN in their Sentry SDK — no changes needed on the SDK
 
 ### 5.1 Release Tracking
 
-- [ ] Parse `release` field from events
-- [ ] Show which release introduced an issue
-- [ ] Mark issues as resolved-in-release; auto-regress if they appear in a newer release
+- [x] Parse `release` field from events
+- [x] Show which release introduced an issue
+- [x] Mark issues as resolved-in-release; auto-regress if they appear in a newer release
 
 ### 5.2 Environment Filtering
 
-- [ ] Global environment selector (production / staging / etc.)
-- [ ] Filter issues and events by environment
+- [x] Global environment selector (production / staging / etc.)
+- [x] Filter issues and events by environment
 
 ### 5.3 Retention & Cleanup
 
-- [ ] Artisan command / scheduled job to delete events older than N days (configurable)
-- [ ] Keep issue summaries even after events are pruned
+- [x] Artisan command / scheduled job to delete events older than N days (configurable)
+- [x] Keep issue summaries even after events are pruned
 
 ### 5.4 Source Maps / Source Context (optional, stretch)
 
@@ -227,8 +287,8 @@ Clients configure this DSN in their Sentry SDK — no changes needed on the SDK
 
 ### 5.5 API Tokens & External API
 
-- [ ] Personal API tokens for programmatic access
-- [ ] REST API for listing/resolving issues (useful for CI/CD integrations)
+- [x] Personal API tokens for programmatic access
+- [x] REST API for listing/resolving issues (useful for CI/CD integrations)
 
 ---
 
@@ -258,14 +318,14 @@ Clients configure this DSN in their Sentry SDK — no changes needed on the SDK
 
 ### Milestone 4 — Production-readiness
 - [ ] 17. Rate limiting on ingest
-- [ ] 18. Event retention / cleanup scheduler
-- [ ] 19. Release tracking
-- [ ] 20. Environment filtering
+- [x] 18. Event retention / cleanup scheduler
+- [x] 19. Release tracking
+- [x] 20. Environment filtering
 - [ ] 21. Performance optimization (indexes, query tuning, caching)
 
 ### Milestone 5 — Advanced (stretch)
 - [ ] 22. Source map upload & processing
-- [ ] 23. API tokens & external REST API
+- [x] 23. API tokens & external REST API
 - [ ] 24. Webhook / Slack notifications
 - [ ] 25. CQRS-style read models for heavy dashboards (if needed)
 
diff --git a/app/Console/Commands/CleanupOldEvents.php b/app/Console/Commands/CleanupOldEvents.php
new file mode 100644
index 0000000..88be8a6
--- /dev/null
+++ b/app/Console/Commands/CleanupOldEvents.php
@@ -0,0 +1,97 @@
+<?php
+
+namespace App\Console\Commands;
+
+use App\Models\Event;
+use App\Models\Issue;
+use Illuminate\Console\Attributes\Description;
+use Illuminate\Console\Attributes\Signature;
+use Illuminate\Console\Command;
+use Illuminate\Support\Carbon;
+
+#[Signature('events:cleanup {--days=90 : Delete events older than this many days}')]
+#[Description('Delete old events to free up database space while keeping issue summaries')]
+class CleanupOldEvents extends Command
+{
+    /**
+     * Execute the console command.
+     */
+    public function handle(): int
+    {
+        $days = (int) $this->option('days');
+
+        if ($days < 1) {
+            $this->error('Days must be at least 1');
+            return self::FAILURE;
+        }
+
+        $cutoffDate = Carbon::now()->subDays($days);
+
+        $this->info("Deleting events older than {$days} days (before {$cutoffDate->toDateTimeString()})...");
+
+        // Get count of events to be deleted
+        $eventsToDelete = Event::where('created_at', '<', $cutoffDate)->count();
+
+        if ($eventsToDelete === 0) {
+            $this->info('No events to delete.');
+            return self::SUCCESS;
+        }
+
+        if (!$this->confirm("This will delete {$eventsToDelete} events. Continue?", true)) {
+            $this->info('Cleanup cancelled.');
+            return self::SUCCESS;
+        }
+
+        // Delete events in chunks to avoid memory issues
+        $deleted = 0;
+        $bar = $this->output->createProgressBar($eventsToDelete);
+        $bar->start();
+
+        Event::where('created_at', '<', $cutoffDate)
+            ->chunkById(1000, function ($events) use (&$deleted, $bar) {
+                foreach ($events as $event) {
+                    $event->delete();
+                    $deleted++;
+                    $bar->advance();
+                }
+            });
+
+        $bar->finish();
+        $this->newLine(2);
+
+        $this->info("Deleted {$deleted} events.");
+
+        // Update issue counters based on remaining events
+        $this->info('Updating issue counters...');
+
+        $issues = Issue::all();
+        $issuesUpdated = 0;
+
+        foreach ($issues as $issue) {
+            $eventsCount = $issue->events()->count();
+
+            if ($eventsCount === 0) {
+                // If no events remain, optionally delete the issue or mark it
+                // For now, we'll keep the issue but mark times_seen as 0
+                $issue->update(['times_seen' => 0]);
+                $issuesUpdated++;
+            } else {
+                // Update counters based on remaining events
+                $firstEvent = $issue->events()->oldest('timestamp')->first();
+                $lastEvent = $issue->events()->latest('timestamp')->first();
+
+                $issue->update([
+                    'times_seen' => $eventsCount,
+                    'first_seen_at' => $firstEvent?->timestamp ?? $issue->first_seen_at,
+                    'last_seen_at' => $lastEvent?->timestamp ?? $issue->last_seen_at,
+                ]);
+                $issuesUpdated++;
+            }
+        }
+
+        $this->info("Updated {$issuesUpdated} issues.");
+        $this->info('Cleanup completed successfully!');
+
+        return self::SUCCESS;
+    }
+}
diff --git a/app/Http/Controllers/Api/ApiIssueController.php b/app/Http/Controllers/Api/ApiIssueController.php
new file mode 100644
index 0000000..0e30bd3
--- /dev/null
+++ b/app/Http/Controllers/Api/ApiIssueController.php
@@ -0,0 +1,103 @@
+<?php
+
+namespace App\Http\Controllers\Api;
+
+use App\Http\Controllers\Controller;
+use App\Models\Issue;
+use App\Models\Project;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+
+class ApiIssueController extends Controller
+{
+    /**
+     * List issues for a project
+     */
+    public function index(Request $request, Project $project): JsonResponse
+    {
+        $this->authorizeProject($request, $project);
+
+        $query = $project->issues();
+
+        // Apply filters
+        if ($status = $request->query('status')) {
+            $query->where('status', $status);
+        }
+
+        if ($level = $request->query('level')) {
+            $query->where('level', $level);
+        }
+
+        if ($environment = $request->query('environment')) {
+            $query->whereHas('events', fn($q) => $q->where('environment', $environment));
+        }
+
+        // Pagination
+        $perPage = min((int) $request->query('per_page', 25), 100);
+        $issues = $query->orderBy('last_seen_at', 'desc')->paginate($perPage);
+
+        return response()->json($issues);
+    }
+
+    /**
+     * Get a specific issue
+     */
+    public function show(Request $request, Project $project, Issue $issue): JsonResponse
+    {
+        $this->authorizeProject($request, $project);
+        abort_unless($issue->project_id === $project->id, 404);
+
+        $issue->load('events');
+
+        return response()->json($issue);
+    }
+
+    /**
+     * Update issue status
+     */
+    public function update(Request $request, Project $project, Issue $issue): JsonResponse
+    {
+        $this->authorizeProject($request, $project);
+        abort_unless($issue->project_id === $project->id, 404);
+
+        $validated = $request->validate([
+            'status' => 'required|in:resolved,unresolved,ignored,muted',
+            'resolved_in_release' => 'nullable|string',
+        ]);
+
+        if ($validated['status'] === 'resolved') {
+            $issue->resolve($validated['resolved_in_release'] ?? null);
+        } elseif ($validated['status'] === 'unresolved') {
+            $issue->unresolve();
+        } elseif ($validated['status'] === 'ignored') {
+            $issue->ignore();
+        } elseif ($validated['status'] === 'muted') {
+            $issue->mute();
+        }
+
+        return response()->json($issue->fresh());
+    }
+
+    /**
+     * Delete an issue
+     */
+    public function destroy(Request $request, Project $project, Issue $issue): JsonResponse
+    {
+        $this->authorizeProject($request, $project);
+        abort_unless($issue->project_id === $project->id, 404);
+
+        $issue->delete();
+
+        return response()->json(['message' => 'Issue deleted successfully']);
+    }
+
+    private function authorizeProject(Request $request, Project $project): void
+    {
+        $user = $request->user();
+        abort_unless(
+            $user && $user->projects()->where('projects.id', $project->id)->exists(),
+            403,
+            'Unauthorized'
+        );
+    }
+}
diff --git a/app/Http/Controllers/IssueController.php b/app/Http/Controllers/IssueController.php
index f7d1fab..fad7a35 100644
--- a/app/Http/Controllers/IssueController.php
+++ b/app/Http/Controllers/IssueController.php
@@ -33,6 +33,12 @@ class IssueController extends Controller
             });
         }
 
+        if ($environment = $request->query('environment')) {
+            $query->whereHas('events', function ($q) use ($environment) {
+                $q->where('environment', $environment);
+            });
+        }
+
         $sortField = $request->query('sort', 'last_seen_at');
         $sortDir = $request->query('dir', 'desc');
         $allowedSorts = ['last_seen_at', 'first_seen_at', 'times_seen', 'level'];
@@ -42,12 +48,22 @@ class IssueController extends Controller
 
         $issues = $query->cursorPaginate(25)->withQueryString();
 
+        // Get distinct environments from events for this project
+        $environments = $project->events()
+            ->whereNotNull('environment')
+            ->distinct()
+            ->pluck('environment')
+            ->sort()
+            ->values();
+
         return view('issues.index', [
             'project' => $project,
             'issues' => $issues,
             'currentStatus' => $status ?: 'unresolved',
             'currentLevel' => $level,
+            'currentEnvironment' => $environment,
             'search' => $search,
+            'environments' => $environments,
         ]);
     }
 
@@ -56,18 +72,36 @@ class IssueController extends Controller
         $this->authorizeProject($request, $project);
         abort_unless($issue->project_id === $project->id, 404);
 
-        $latestEvent = $issue->events()->latest('timestamp')->first();
+        $environment = $request->query('environment');
 
-        $events = $issue->events()
+        $eventsQuery = $issue->events();
+
+        if ($environment) {
+            $eventsQuery->where('environment', $environment);
+        }
+
+        $latestEvent = (clone $eventsQuery)->latest('timestamp')->first();
+
+        $events = $eventsQuery
             ->latest('timestamp')
             ->cursorPaginate(10)
             ->withQueryString();
 
+        // Get distinct environments for this issue
+        $environments = $issue->events()
+            ->whereNotNull('environment')
+            ->distinct()
+            ->pluck('environment')
+            ->sort()
+            ->values();
+
         return view('issues.show', [
             'project' => $project,
             'issue' => $issue,
             'latestEvent' => $latestEvent,
             'events' => $events,
+            'environments' => $environments,
+            'currentEnvironment' => $environment,
         ]);
     }
 
diff --git a/app/Http/Middleware/AuthenticateApiToken.php b/app/Http/Middleware/AuthenticateApiToken.php
new file mode 100644
index 0000000..f7e45f8
--- /dev/null
+++ b/app/Http/Middleware/AuthenticateApiToken.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use App\Models\PersonalAccessToken;
+use Closure;
+use Illuminate\Http\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+class AuthenticateApiToken
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  Closure(Request): (Response)  $next
+     */
+    public function handle(Request $request, Closure $next): Response
+    {
+        $token = $request->bearerToken();
+
+        if (!$token) {
+            return response()->json(['error' => 'Unauthenticated'], 401);
+        }
+
+        $hashedToken = hash('sha256', $token);
+        $accessToken = PersonalAccessToken::where('token', $hashedToken)->first();
+
+        if (!$accessToken) {
+            return response()->json(['error' => 'Invalid token'], 401);
+        }
+
+        if ($accessToken->isExpired()) {
+            return response()->json(['error' => 'Token expired'], 401);
+        }
+
+        // Set the authenticated user
+        $request->setUserResolver(fn() => $accessToken->tokenable);
+
+        // Mark token as used
+        $accessToken->markAsUsed();
+
+        return $next($request);
+    }
+}
diff --git a/app/Models/Issue.php b/app/Models/Issue.php
index 54d69c1..f5c12ac 100644
--- a/app/Models/Issue.php
+++ b/app/Models/Issue.php
@@ -24,6 +24,8 @@ class Issue extends Model
         'times_seen',
         'is_regression',
         'metadata',
+        'first_release',
+        'resolved_in_release',
     ];
 
     protected function casts(): array
@@ -51,9 +53,13 @@ class Issue extends Model
         return $this->events()->latest('timestamp')->limit(1);
     }
 
-    public function resolve(): void
+    public function resolve(?string $release = null): void
     {
-        $this->update(['status' => 'resolved', 'is_regression' => false]);
+        $this->update([
+            'status' => 'resolved',
+            'is_regression' => false,
+            'resolved_in_release' => $release,
+        ]);
     }
 
     public function ignore(): void
diff --git a/app/Models/PersonalAccessToken.php b/app/Models/PersonalAccessToken.php
new file mode 100644
index 0000000..78024f8
--- /dev/null
+++ b/app/Models/PersonalAccessToken.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\MorphTo;
+
+class PersonalAccessToken extends Model
+{
+    protected $fillable = [
+        'name',
+        'token',
+        'abilities',
+        'last_used_at',
+        'expires_at',
+    ];
+
+    protected function casts(): array
+    {
+        return [
+            'abilities' => 'array',
+            'last_used_at' => 'datetime',
+            'expires_at' => 'datetime',
+        ];
+    }
+
+    public function tokenable(): MorphTo
+    {
+        return $this->morphTo();
+    }
+
+    public function can(string $ability): bool
+    {
+        return in_array('*', $this->abilities ?? []) || in_array($ability, $this->abilities ?? []);
+    }
+
+    public function markAsUsed(): void
+    {
+        $this->update(['last_used_at' => now()]);
+    }
+
+    public function isExpired(): bool
+    {
+        return $this->expires_at && $this->expires_at->isPast();
+    }
+}
diff --git a/app/Models/User.php b/app/Models/User.php
index 252531c..03b7197 100644
--- a/app/Models/User.php
+++ b/app/Models/User.php
@@ -9,8 +9,10 @@ use Illuminate\Database\Eloquent\Attributes\Hidden;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\MorphMany;
 use Illuminate\Foundation\Auth\User as Authenticatable;
 use Illuminate\Notifications\Notifiable;
+use Illuminate\Support\Str;
 
 #[Fillable(['name', 'email', 'password'])]
 #[Hidden(['password', 'remember_token'])]
@@ -52,4 +54,21 @@ class User extends Authenticatable
                 ['email_enabled' => true, 'database_enabled' => true, 'muted' => false],
             );
     }
+
+    public function tokens(): MorphMany
+    {
+        return $this->morphMany(PersonalAccessToken::class, 'tokenable');
+    }
+
+    public function createToken(string $name, array $abilities = ['*'], ?\DateTimeInterface $expiresAt = null): PersonalAccessToken
+    {
+        $token = Str::random(64);
+
+        return $this->tokens()->create([
+            'name' => $name,
+            'token' => hash('sha256', $token),
+            'abilities' => $abilities,
+            'expires_at' => $expiresAt,
+        ]);
+    }
 }
diff --git a/app/Services/EventProcessor.php b/app/Services/EventProcessor.php
index 4e699f9..40bb7f4 100644
--- a/app/Services/EventProcessor.php
+++ b/app/Services/EventProcessor.php
@@ -105,6 +105,7 @@ class EventProcessor
             'last_seen_at' => $now,
             'times_seen' => 1,
             'is_regression' => false,
+            'first_release' => $data['release'],
             'metadata' => array_filter([
                 'platform' => $data['platform'],
                 'sdk' => $data['sdk'],
@@ -115,11 +116,21 @@ class EventProcessor
     private function updateExistingIssue(Issue $issue, array $data, Carbon $now): bool
     {
         $wasResolved = $issue->status === 'resolved';
+        $currentRelease = $data['release'];
+        $resolvedInRelease = $issue->resolved_in_release;
 
         $issue->increment('times_seen');
         $issue->update(['last_seen_at' => $now]);
 
+        // Check for regression: issue was resolved, and now appears again
         if ($wasResolved) {
+            // If we have release tracking and the issue was resolved in a release,
+            // only mark as regression if the current release is different (assumed newer)
+            if ($resolvedInRelease && $currentRelease && $currentRelease === $resolvedInRelease) {
+                // Same release as resolved - don't mark as regression
+                return false;
+            }
+
             $issue->markRegression();
 
             return true;
diff --git a/database/migrations/2026_03_21_131503_add_release_tracking_to_issues_table.php b/database/migrations/2026_03_21_131503_add_release_tracking_to_issues_table.php
new file mode 100644
index 0000000..9f5b620
--- /dev/null
+++ b/database/migrations/2026_03_21_131503_add_release_tracking_to_issues_table.php
@@ -0,0 +1,29 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('issues', function (Blueprint $table) {
+            $table->string('first_release')->nullable()->after('first_seen_at');
+            $table->string('resolved_in_release')->nullable()->after('status');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('issues', function (Blueprint $table) {
+            $table->dropColumn(['first_release', 'resolved_in_release']);
+        });
+    }
+};
diff --git a/database/migrations/2026_03_21_131922_create_personal_access_tokens_table.php b/database/migrations/2026_03_21_131922_create_personal_access_tokens_table.php
new file mode 100644
index 0000000..e828ad8
--- /dev/null
+++ b/database/migrations/2026_03_21_131922_create_personal_access_tokens_table.php
@@ -0,0 +1,33 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('personal_access_tokens', function (Blueprint $table) {
+            $table->id();
+            $table->morphs('tokenable');
+            $table->string('name');
+            $table->string('token', 64)->unique();
+            $table->text('abilities')->nullable();
+            $table->timestamp('last_used_at')->nullable();
+            $table->timestamp('expires_at')->nullable();
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('personal_access_tokens');
+    }
+};
diff --git a/database/seeders/DatabaseSeeder.php b/database/seeders/DatabaseSeeder.php
index 6b901f8..ab75279 100644
--- a/database/seeders/DatabaseSeeder.php
+++ b/database/seeders/DatabaseSeeder.php
@@ -20,6 +20,7 @@ class DatabaseSeeder extends Seeder
         User::factory()->create([
             'name' => 'Test User',
             'email' => 'test@example.com',
+            'password' => bcrypt('password'),
         ]);
     }
 }
diff --git a/package-lock.json b/package-lock.json
index 34a17af..bc4597b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,5 +1,5 @@
 {
-    "name": "test_app_two",
+    "name": "html",
     "lockfileVersion": 3,
     "requires": true,
     "packages": {
diff --git a/resources/views/issues/index.blade.php b/resources/views/issues/index.blade.php
index 790ad73..7c721b9 100644
--- a/resources/views/issues/index.blade.php
+++ b/resources/views/issues/index.blade.php
@@ -1,5 +1,7 @@
 <x-app-layout>
-    @php($currentProject = $project)
+    @php
+        $currentProject = $project;
+    @endphp
 
     <x-slot name="header">
         <div class="flex items-center justify-between">
@@ -41,8 +43,19 @@
                             @endforeach
                         </select>
                     </div>
+                    @if($environments->isNotEmpty())
+                        <div>
+                            <x-input-label for="environment" value="Environment" />
+                            <select id="environment" name="environment" class="mt-1 block w-full border-gray-300 focus:border-indigo-500 focus:ring-indigo-500 rounded-md shadow-sm text-sm">
+                                <option value="">All</option>
+                                @foreach($environments as $env)
+                                    <option value="{{ $env }}" {{ $currentEnvironment === $env ? 'selected' : '' }}>{{ ucfirst($env) }}</option>
+                                @endforeach
+                            </select>
+                        </div>
+                    @endif
                     <x-primary-button>Filter</x-primary-button>
-                    @if($search || $currentLevel || $currentStatus !== 'unresolved')
+                    @if($search || $currentLevel || $currentEnvironment || $currentStatus !== 'unresolved')
                         <a href="{{ route('projects.issues.index', $project) }}" class="text-sm text-gray-500 hover:text-gray-700">Reset</a>
                     @endif
                 </form>
diff --git a/resources/views/issues/show.blade.php b/resources/views/issues/show.blade.php
index ca7f2a9..852bb61 100644
--- a/resources/views/issues/show.blade.php
+++ b/resources/views/issues/show.blade.php
@@ -39,6 +39,26 @@
                 </div>
             @endif
 
+            {{-- Environment Filter --}}
+            @if($environments->isNotEmpty())
+                <div class="bg-white overflow-hidden shadow-sm sm:rounded-lg p-4">
+                    <form method="GET" action="{{ route('projects.issues.show', [$project, $issue]) }}" class="flex items-end gap-4">
+                        <div>
+                            <x-input-label for="environment" value="Filter by Environment" />
+                            <select id="environment" name="environment" class="mt-1 block w-full border-gray-300 focus:border-indigo-500 focus:ring-indigo-500 rounded-md shadow-sm text-sm" onchange="this.form.submit()">
+                                <option value="">All Environments</option>
+                                @foreach($environments as $env)
+                                    <option value="{{ $env }}" {{ $currentEnvironment === $env ? 'selected' : '' }}>{{ ucfirst($env) }}</option>
+                                @endforeach
+                            </select>
+                        </div>
+                        @if($currentEnvironment)
+                            <a href="{{ route('projects.issues.show', [$project, $issue]) }}" class="text-sm text-gray-500 hover:text-gray-700 pb-2">Reset</a>
+                        @endif
+                    </form>
+                </div>
+            @endif
+
             {{-- Issue Meta --}}
             @php
                 $statusColors = [
@@ -88,6 +108,18 @@
                         <span class="text-gray-500">Last Seen</span>
                         <div class="mt-1 text-gray-900" title="{{ $issue->last_seen_at }}">{{ $issue->last_seen_at->diffForHumans() }}</div>
                     </div>
+                    @if($issue->first_release)
+                        <div>
+                            <span class="text-gray-500">First Release</span>
+                            <div class="mt-1 font-mono text-sm text-gray-900">{{ $issue->first_release }}</div>
+                        </div>
+                    @endif
+                    @if($issue->resolved_in_release)
+                        <div>
+                            <span class="text-gray-500">Resolved In</span>
+                            <div class="mt-1 font-mono text-sm text-green-700">{{ $issue->resolved_in_release }}</div>
+                        </div>
+                    @endif
                 </div>
             </div>
 
diff --git a/routes/api.php b/routes/api.php
index 07bbec2..6fb65e5 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -1,9 +1,22 @@
 <?php
 
+use App\Http\Controllers\Api\ApiIssueController;
 use App\Http\Controllers\Api\EventIngestController;
+use App\Http\Middleware\AuthenticateApiToken;
 use App\Http\Middleware\AuthenticateDsn;
 use Illuminate\Support\Facades\Route;
 
+// Event ingestion (uses DSN authentication)
 Route::post('/{project}/store/', [EventIngestController::class, 'store'])
     ->middleware(AuthenticateDsn::class)
     ->name('api.events.store');
+
+// REST API (uses token authentication)
+Route::middleware(AuthenticateApiToken::class)->prefix('v1')->group(function () {
+    Route::prefix('projects/{project}/issues')->group(function () {
+        Route::get('/', [ApiIssueController::class, 'index'])->name('api.v1.issues.index');
+        Route::get('/{issue}', [ApiIssueController::class, 'show'])->name('api.v1.issues.show');
+        Route::patch('/{issue}', [ApiIssueController::class, 'update'])->name('api.v1.issues.update');
+        Route::delete('/{issue}', [ApiIssueController::class, 'destroy'])->name('api.v1.issues.destroy');
+    });
+});