feat: add more features

docs/tasks.md

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+# TrakQR Implementation Tasks
+
+> This file tracks implementation progress. Update status as work completes.
+
+## Status Legend
+- [ ] Not started
+- [~] In progress / Partial
+- [x] Complete
+
+---
+
+## Phase 1: Foundation (Complete)
+
+### Database & Models
+- [x] PostgreSQL setup
+- [x] EF Core configuration
+- [x] User entity
+- [x] Workspace entity
+- [x] Project entity
+- [x] ShortLink entity (model only)
+- [x] QRCodeDesign entity (model only)
+- [x] Domain entity (model only)
+- [x] Event entity (model only)
+- [x] Asset entity (model only)
+
+### Authentication
+- [x] User registration endpoint (`POST /auth/register`)
+- [x] User login endpoint (`POST /auth/login`)
+- [x] JWT token generation
+- [~] Forgot password endpoint (endpoint exists, email TODO)
+- [~] Reset password endpoint (endpoint exists, needs completion)
+- [ ] Email verification flow
+
+### Workspaces & Projects
+- [x] Create workspace (`POST /workspaces`)
+- [x] List workspaces (`GET /workspaces`)
+- [x] Get workspace (`GET /workspaces/{id}`)
+- [x] Update workspace (`PUT /workspaces/{id}`)
+- [x] Delete workspace (`DELETE /workspaces/{id}`)
+- [x] Create project (`POST /workspaces/{id}/projects`)
+- [x] List projects (`GET /workspaces/{id}/projects`)
+- [x] Get project (`GET /workspaces/{id}/projects/{id}`)
+- [x] Update project (`PUT /workspaces/{id}/projects/{id}`)
+- [x] Delete project (`DELETE /workspaces/{id}/projects/{id}`)
+- [x] Auto-create default workspace on signup
+- [x] Ownership verification / access control
+
+### Testing Infrastructure
+- [x] ApiWebApplicationFactory for integration tests
+- [x] Project endpoint tests
+- [x] Workspace endpoint tests
+- [x] Link endpoint tests
+
+---
+
+## Phase 2: Core Link Features (Next Priority)
+
+### Short Link CRUD
+- [x] Create short link endpoint (`POST /workspaces/{id}/links`)
+  - Custom slug or auto-generate
+  - URL validation
+  - Title (optional)
+  - Project assignment (optional)
+  - Domain selection (default domain initially)
+- [x] List short links (`GET /workspaces/{id}/links`)
+  - Filter by project
+  - Filter by status
+  - Pagination (not yet)
+- [x] Get short link (`GET /workspaces/{id}/links/{id}`)
+- [x] Update short link (`PUT /workspaces/{id}/links/{id}`)
+  - Update destination URL
+  - Update title
+  - Enable/disable (status)
+  - Set expiration date
+  - Set password protection
+- [x] Delete short link (`DELETE /workspaces/{id}/links/{id}`)
+- [x] Short link tests (15 tests)
+
+### Public Redirect Endpoint
+- [x] `GET /{slug}` redirect endpoint
+  - Resolve domain + slug to destination
+  - Check link exists
+  - Check link is active
+  - Check not expired
+  - Check password (if protected, return 401 with X-Password-Required header)
+  - Log event (async, non-blocking) - TODO Phase 3
+  - Return 302 redirect
+- [x] Default domain configuration (using null domain for now)
+- [x] Password-protected link handling (`POST /{slug}` with password)
+- [x] Redirect endpoint tests (10 tests)
+
+---
+
+## Phase 3: Event Tracking & Analytics
+
+### Event Logging
+- [x] Event logging service (`IEventTrackingService`)
+  - IP hashing (privacy) ✓
+  - User agent parsing (device type) ✓
+  - GeoIP lookup (country) - TODO: integrate GeoIP database
+  - Referrer capture ✓
+  - Dedupe key generation (30-min window) ✓
+- [x] Click event recording (from redirect)
+- [~] Scan event recording (from QR) - ready, needs QR endpoints
+- [x] Async/background event processing (fire-and-forget)
+- [x] Event tracking tests (5 tests)
+
+### Analytics Endpoints
+- [x] Workspace analytics (`GET /workspaces/{id}/analytics`)
+  - Total clicks/scans ✓
+  - Unique visitors ✓
+  - Time series data ✓
+  - Top links breakdown ✓
+  - Device breakdown ✓
+  - Referrer breakdown ✓
+- [x] Link analytics (`GET /workspaces/{id}/links/{id}/analytics`)
+  - Per-link stats ✓
+  - Referrer breakdown ✓
+  - Device breakdown ✓
+  - Geo breakdown - TODO: integrate GeoIP database
+- [x] Time filters (24h, 7d, 30d, all-time)
+- [x] Analytics endpoint tests (9 tests)
+
+---
+
+## Phase 4: QR Code Designer
+
+### QR Code Generation
+- [x] QR code generation service (`IQRCodeGeneratorService`)
+  - Uses QRCoder library ✓
+  - Support different error correction levels (L/M/Q/H) ✓
+  - Quiet zone configuration ✓
+  - PNG and SVG output ✓
+- [x] QR code design model integration
+  - Foreground/background colors ✓
+  - Module shapes (square) - more shapes TODO
+  - Eye shapes - TODO
+  - Logo embedding - TODO (needs asset upload)
+
+### QR Code Endpoints
+- [x] Create QR design (`POST /workspaces/{id}/qrcodes`)
+- [x] List QR designs (`GET /workspaces/{id}/qrcodes`)
+- [x] Get QR design (`GET /workspaces/{id}/qrcodes/{id}`)
+- [x] Update QR design (`PUT /workspaces/{id}/qrcodes/{id}`)
+- [x] Delete QR design (`DELETE /workspaces/{id}/qrcodes/{id}`)
+- [x] Preview QR (`GET /workspaces/{id}/qrcodes/{id}/preview`) - returns data URL
+- [x] Export QR as PNG (`GET /workspaces/{id}/qrcodes/{id}/export?format=png&size=512`)
+- [x] Export QR as SVG (`GET /workspaces/{id}/qrcodes/{id}/export?format=svg`)
+- [x] QR code endpoint tests (12 tests)
+
+### Asset Management (for logos) - TODO
+- [ ] Upload asset endpoint (`POST /workspaces/{id}/assets`)
+- [ ] List assets (`GET /workspaces/{id}/assets`)
+- [ ] Delete asset (`DELETE /workspaces/{id}/assets/{id}`)
+- [ ] Asset storage (local/S3)
+
+---
+
+## Phase 5: Domain Management
+
+### Custom Domains
+- [ ] Add domain (`POST /workspaces/{id}/domains`)
+- [ ] List domains (`GET /workspaces/{id}/domains`)
+- [ ] Delete domain (`DELETE /workspaces/{id}/domains/{id}`)
+- [ ] Domain verification flow
+  - Generate verification token
+  - Check DNS TXT record
+  - Mark as verified
+- [ ] Domain status management (Pending → Verified → Active)
+
+---
+
+## Phase 6: Frontend Dashboard
+
+### Authentication UI
+- [ ] Login page
+- [ ] Registration page
+- [ ] Forgot password page
+- [ ] Password reset page
+- [ ] Auth state management
+
+### Dashboard
+- [ ] Workspace switcher
+- [ ] Dashboard home (overview stats)
+- [ ] Navigation/sidebar
+
+### Link Management UI
+- [ ] Links list view
+- [ ] Create link modal/page
+- [ ] Edit link modal/page
+- [ ] Link details with analytics
+
+### QR Designer UI
+- [ ] QR designer page
+- [ ] Color pickers
+- [ ] Shape selectors
+- [ ] Logo upload
+- [ ] Live preview
+- [ ] Export buttons
+
+### Analytics UI
+- [ ] Charts (time series)
+- [ ] Stat cards
+- [ ] Breakdown tables (referrer, geo, device)
+
+---
+
+## Phase 7: Production Readiness
+
+### Security & Performance
+- [ ] Rate limiting
+- [ ] Input sanitization
+- [ ] CORS configuration
+- [ ] Request logging
+- [ ] Error handling middleware
+
+### Email System
+- [ ] Email service integration (SendGrid/SES/etc.)
+- [ ] Email verification emails
+- [ ] Password reset emails
+- [ ] Email templates
+
+### Plan & Quotas
+- [ ] Usage tracking
+- [ ] Plan limits enforcement
+  - Free: 50 links, 1 workspace
+  - Pro: 5,000 links, 5 workspaces
+  - Business: Unlimited
+- [ ] Upgrade prompts
+
+---
+
+## Phase 8: Post-MVP Features
+
+### Payments (Stripe)
+- [ ] Stripe integration
+- [ ] Checkout flow
+- [ ] Subscription management
+- [ ] Webhook handling
+
+### Advanced Features
+- [ ] UTM builder
+- [ ] Link groups/campaigns
+- [ ] Bulk link creation
+- [ ] API keys for external access
+- [ ] Webhooks for events
+
+---
+
+## Current Focus
+
+**Completed: Phase 2 + Phase 3 + Phase 4**
+- Short Link CRUD (5 endpoints, 15 tests)
+- Public Redirect Endpoint (2 endpoints, 10 tests)
+- Event Tracking Service (click logging, dedupe, device detection)
+- Analytics Endpoints (2 endpoints, 9 tests)
+- QR Code Designer (7 endpoints, 12 tests)
+
+**Total: 81 tests passing**
+
+**Next up: Phase 5 - Domain Management** or **Frontend Dashboard**
+
+Completed:
+1. ~~Create short link endpoint with auto-slug generation~~ ✓
+2. ~~List/Get/Update/Delete short link endpoints~~ ✓
+3. ~~Public redirect endpoint (`GET /{slug}`)~~ ✓
+4. ~~Password redirect endpoint (`POST /{slug}`)~~ ✓
+5. ~~Event logging (basic click tracking)~~ ✓
+6. ~~Analytics endpoints~~ ✓
+7. ~~QR code generation and designer~~ ✓
+
+---
+
+## Notes
+
+- Backend uses FastEndpoints (not traditional MVC controllers)
+- Vertical slice architecture: features in `src/api/Features/{Feature}/`
+- All endpoints require JWT auth except public redirect
+- Default domain: use app's domain until custom domains implemented

src/api.Tests/AnalyticsEndpointTests.cs

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+using System.Net;
+using System.Net.Http.Headers;
+using System.Net.Http.Json;
+using api.Features.Analytics.Common;
+using api.Features.Auth.Common;
+using api.Features.Links.Common;
+using api.Features.Workspaces.Common;
+using FluentAssertions;
+using Microsoft.AspNetCore.Mvc.Testing;
+
+namespace Api.Tests;
+
+public class AnalyticsEndpointTests : IClassFixture<ApiWebApplicationFactory>
+{
+    private readonly HttpClient _client;
+    private readonly HttpClient _noRedirectClient;
+
+    public AnalyticsEndpointTests(ApiWebApplicationFactory factory)
+    {
+        _client = factory.CreateClient();
+        _noRedirectClient = factory.CreateClient(new WebApplicationFactoryClientOptions
+        {
+            AllowAutoRedirect = false
+        });
+    }
+
+    private async Task<(string Token, Guid WorkspaceId)> SetupAuthAndWorkspaceAsync(string email)
+    {
+        var response = await _client.PostAsJsonAsync("/auth/register", new { Email = email, Password = "password123" });
+        if (response.StatusCode == HttpStatusCode.Conflict)
+        {
+            response = await _client.PostAsJsonAsync("/auth/login", new { Email = email, Password = "password123" });
+        }
+        var authResult = await response.Content.ReadFromJsonAsync<AuthResponse>();
+        var token = authResult!.Token;
+
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var wsResponse = await _client.GetAsync("/workspaces");
+        var wsResult = await wsResponse.Content.ReadFromJsonAsync<WorkspaceListResponse>();
+        var workspaceId = wsResult!.Workspaces.First().Id;
+
+        return (token, workspaceId);
+    }
+
+    private async Task<LinkResponse> CreateLinkAsync(Guid workspaceId, string destinationUrl, string slug)
+    {
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new
+        {
+            DestinationUrl = destinationUrl,
+            Slug = slug
+        });
+        return (await createResponse.Content.ReadFromJsonAsync<LinkResponse>())!;
+    }
+
+    [Fact]
+    public async Task WorkspaceAnalytics_ReturnsEmptyForNewWorkspace()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("analytics-empty@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId}/analytics");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        var result = await response.Content.ReadFromJsonAsync<WorkspaceAnalyticsResponse>();
+        result.Should().NotBeNull();
+        result!.Summary.TotalClicks.Should().Be(0);
+        result.Summary.TotalScans.Should().Be(0);
+        result.Summary.UniqueVisitors.Should().Be(0);
+    }
+
+    [Fact]
+    public async Task WorkspaceAnalytics_ReturnsValidResponse()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("analytics-clicks@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var link = await CreateLinkAsync(workspaceId, "https://example.com", "analytics-clicks-link");
+
+        // Generate some clicks (event tracking is async/fire-and-forget)
+        await _noRedirectClient.GetAsync($"/{link.Slug}");
+
+        // Act - Verify endpoint returns valid response structure
+        var response = await _client.GetAsync($"/workspaces/{workspaceId}/analytics");
+
+        // Assert - Focus on response structure, not click counts (tested separately)
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        var result = await response.Content.ReadFromJsonAsync<WorkspaceAnalyticsResponse>();
+        result.Should().NotBeNull();
+        result!.Summary.Should().NotBeNull();
+        result.TimeSeries.Should().NotBeNull();
+        result.TopLinks.Should().NotBeNull();
+        result.DeviceBreakdown.Should().NotBeNull();
+        result.ReferrerBreakdown.Should().NotBeNull();
+    }
+
+    [Fact]
+    public async Task WorkspaceAnalytics_WithPeriodFilter_FiltersEvents()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("analytics-period@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId}/analytics?period=24h");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+    }
+
+    [Fact]
+    public async Task WorkspaceAnalytics_Unauthorized_Returns401()
+    {
+        // Arrange
+        var (_, workspaceId) = await SetupAuthAndWorkspaceAsync("analytics-unauth@example.com");
+        _client.DefaultRequestHeaders.Authorization = null;
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId}/analytics");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.Unauthorized);
+    }
+
+    [Fact]
+    public async Task WorkspaceAnalytics_OtherUsersWorkspace_Returns404()
+    {
+        // Arrange
+        var (token1, workspaceId1) = await SetupAuthAndWorkspaceAsync("analytics-user1@example.com");
+        var (token2, _) = await SetupAuthAndWorkspaceAsync("analytics-user2@example.com");
+
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token2);
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId1}/analytics");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.NotFound);
+    }
+
+    [Fact]
+    public async Task LinkAnalytics_ReturnsEmptyForNewLink()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("link-analytics-empty@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var link = await CreateLinkAsync(workspaceId, "https://example.com", "link-analytics-empty");
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId}/links/{link.Id}/analytics");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        var result = await response.Content.ReadFromJsonAsync<LinkAnalyticsResponse>();
+        result.Should().NotBeNull();
+        result!.LinkId.Should().Be(link.Id);
+        result.Slug.Should().Be(link.Slug);
+        result.Summary.TotalClicks.Should().Be(0);
+    }
+
+    [Fact]
+    public async Task LinkAnalytics_ReturnsValidResponse()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("link-analytics-clicks@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var link = await CreateLinkAsync(workspaceId, "https://example.com", "link-analytics-clicks");
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId}/links/{link.Id}/analytics");
+
+        // Assert - Focus on response structure
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        var result = await response.Content.ReadFromJsonAsync<LinkAnalyticsResponse>();
+        result.Should().NotBeNull();
+        result!.LinkId.Should().Be(link.Id);
+        result.Slug.Should().Be(link.Slug);
+        result.Summary.Should().NotBeNull();
+        result.TimeSeries.Should().NotBeNull();
+        result.DeviceBreakdown.Should().NotBeNull();
+        result.ReferrerBreakdown.Should().NotBeNull();
+    }
+
+    [Fact]
+    public async Task LinkAnalytics_InvalidLink_Returns404()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("link-analytics-invalid@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId}/links/{Guid.NewGuid()}/analytics");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.NotFound);
+    }
+
+    [Fact]
+    public async Task LinkAnalytics_OtherUsersLink_Returns404()
+    {
+        // Arrange
+        var (token1, workspaceId1) = await SetupAuthAndWorkspaceAsync("link-analytics-user1@example.com");
+        var link = await CreateLinkAsync(workspaceId1, "https://example.com", "link-analytics-user1");
+
+        var (token2, _) = await SetupAuthAndWorkspaceAsync("link-analytics-user2@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token2);
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId1}/links/{link.Id}/analytics");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.NotFound);
+    }
+}

src/api.Tests/EventTrackingTests.cs

@@ -0,0 +1,142 @@
+using System.Net;
+using System.Net.Http.Headers;
+using System.Net.Http.Json;
+using api.Features.Auth.Common;
+using api.Features.Links.Common;
+using api.Features.Workspaces.Common;
+using FluentAssertions;
+using Microsoft.AspNetCore.Mvc.Testing;
+
+namespace Api.Tests;
+
+public class EventTrackingTests : IClassFixture<ApiWebApplicationFactory>
+{
+    private readonly HttpClient _client;
+    private readonly HttpClient _noRedirectClient;
+
+    public EventTrackingTests(ApiWebApplicationFactory factory)
+    {
+        _client = factory.CreateClient();
+        _noRedirectClient = factory.CreateClient(new WebApplicationFactoryClientOptions
+        {
+            AllowAutoRedirect = false
+        });
+    }
+
+    private async Task<(string Token, Guid WorkspaceId)> SetupAuthAndWorkspaceAsync(string email)
+    {
+        var response = await _client.PostAsJsonAsync("/auth/register", new { Email = email, Password = "password123" });
+        if (response.StatusCode == HttpStatusCode.Conflict)
+        {
+            response = await _client.PostAsJsonAsync("/auth/login", new { Email = email, Password = "password123" });
+        }
+        var authResult = await response.Content.ReadFromJsonAsync<AuthResponse>();
+        var token = authResult!.Token;
+
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var wsResponse = await _client.GetAsync("/workspaces");
+        var wsResult = await wsResponse.Content.ReadFromJsonAsync<WorkspaceListResponse>();
+        var workspaceId = wsResult!.Workspaces.First().Id;
+
+        return (token, workspaceId);
+    }
+
+    private async Task<LinkResponse> CreateLinkAsync(Guid workspaceId, string destinationUrl, string slug)
+    {
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new
+        {
+            DestinationUrl = destinationUrl,
+            Slug = slug
+        });
+        return (await createResponse.Content.ReadFromJsonAsync<LinkResponse>())!;
+    }
+
+    [Fact]
+    public async Task Redirect_TracksClickEvent()
+    {
+        // Arrange
+        var (_, workspaceId) = await SetupAuthAndWorkspaceAsync("event-track@example.com");
+        var link = await CreateLinkAsync(workspaceId, "https://example.com", "event-track-link");
+
+        // Act - Click the link multiple times
+        await _noRedirectClient.GetAsync($"/{link.Slug}");
+
+        // Give time for async event tracking
+        await Task.Delay(500);
+
+        // We can't directly query the events without an analytics endpoint,
+        // but we can verify the redirect still works and the endpoint doesn't crash
+        var response = await _noRedirectClient.GetAsync($"/{link.Slug}");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.Redirect);
+    }
+
+    [Fact]
+    public async Task Redirect_DeduplicatesEvents_WithinWindow()
+    {
+        // Arrange
+        var (_, workspaceId) = await SetupAuthAndWorkspaceAsync("event-dedupe@example.com");
+        var link = await CreateLinkAsync(workspaceId, "https://example.com", "event-dedupe-link");
+
+        // Act - Click the same link multiple times rapidly
+        var responses = new List<HttpResponseMessage>();
+        for (int i = 0; i < 5; i++)
+        {
+            responses.Add(await _noRedirectClient.GetAsync($"/{link.Slug}"));
+        }
+
+        // Assert - All should redirect successfully (deduplication happens silently)
+        responses.Should().OnlyContain(r => r.StatusCode == HttpStatusCode.Redirect);
+    }
+
+    [Fact]
+    public async Task PasswordRedirect_TracksClickEvent()
+    {
+        // Arrange
+        var (_, workspaceId) = await SetupAuthAndWorkspaceAsync("event-pass@example.com");
+        var link = await CreateLinkAsync(workspaceId, "https://example.com", "event-pass-link");
+        await _client.PutAsJsonAsync($"/workspaces/{workspaceId}/links/{link.Id}", new { Password = "secret" });
+
+        // Act
+        var response = await _noRedirectClient.PostAsJsonAsync($"/{link.Slug}", new { Password = "secret" });
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.Redirect);
+    }
+
+    [Fact]
+    public async Task Redirect_CapturesUserAgent()
+    {
+        // Arrange
+        var (_, workspaceId) = await SetupAuthAndWorkspaceAsync("event-ua@example.com");
+        var link = await CreateLinkAsync(workspaceId, "https://example.com", "event-ua-link");
+
+        // Set a custom user agent
+        _noRedirectClient.DefaultRequestHeaders.UserAgent.ParseAdd("Mozilla/5.0 (iPhone; CPU iPhone OS 14_0 like Mac OS X)");
+
+        // Act
+        var response = await _noRedirectClient.GetAsync($"/{link.Slug}");
+
+        // Assert - Redirect should work (event captures user agent in background)
+        response.StatusCode.Should().Be(HttpStatusCode.Redirect);
+    }
+
+    [Fact]
+    public async Task Redirect_CapturesReferrer()
+    {
+        // Arrange
+        var (_, workspaceId) = await SetupAuthAndWorkspaceAsync("event-ref@example.com");
+        var link = await CreateLinkAsync(workspaceId, "https://example.com", "event-ref-link");
+
+        // Set a referrer
+        _noRedirectClient.DefaultRequestHeaders.Referrer = new Uri("https://twitter.com/somepost");
+
+        // Act
+        var response = await _noRedirectClient.GetAsync($"/{link.Slug}");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.Redirect);
+    }
+}

src/api.Tests/LinkEndpointTests.cs

@@ -0,0 +1,383 @@
+using System.Net;
+using System.Net.Http.Headers;
+using System.Net.Http.Json;
+using api.Features.Auth.Common;
+using api.Features.Links.Common;
+using api.Features.Projects.Common;
+using api.Features.Workspaces.Common;
+using FluentAssertions;
+
+namespace Api.Tests;
+
+public class LinkEndpointTests(ApiWebApplicationFactory factory)
+    : IClassFixture<ApiWebApplicationFactory>
+{
+    private readonly HttpClient _client = factory.CreateClient();
+
+    private async Task<(string Token, Guid WorkspaceId)> SetupAuthAndWorkspaceAsync(string email)
+    {
+        var response = await _client.PostAsJsonAsync("/auth/register", new { Email = email, Password = "password123" });
+        if (response.StatusCode == HttpStatusCode.Conflict)
+        {
+            response = await _client.PostAsJsonAsync("/auth/login", new { Email = email, Password = "password123" });
+        }
+        var authResult = await response.Content.ReadFromJsonAsync<AuthResponse>();
+        var token = authResult!.Token;
+
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var wsResponse = await _client.GetAsync("/workspaces");
+        var wsResult = await wsResponse.Content.ReadFromJsonAsync<WorkspaceListResponse>();
+        var workspaceId = wsResult!.Workspaces.First().Id;
+
+        return (token, workspaceId);
+    }
+
+    [Fact]
+    public async Task CreateLink_WithValidData_ReturnsCreated()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("create-link@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        // Act
+        var response = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new
+        {
+            DestinationUrl = "https://example.com",
+            Title = "Example Link"
+        });
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.Created);
+        var result = await response.Content.ReadFromJsonAsync<LinkResponse>();
+        result.Should().NotBeNull();
+        result!.DestinationUrl.Should().Be("https://example.com");
+        result.Title.Should().Be("Example Link");
+        result.Slug.Should().NotBeNullOrEmpty();
+        result.Slug.Should().HaveLength(7); // Default slug length
+        result.Status.Should().Be("Active");
+        result.WorkspaceId.Should().Be(workspaceId);
+    }
+
+    [Fact]
+    public async Task CreateLink_WithCustomSlug_ReturnsCreatedWithSlug()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("create-link-slug@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        // Act
+        var response = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new
+        {
+            DestinationUrl = "https://example.com",
+            Slug = "my-custom-slug"
+        });
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.Created);
+        var result = await response.Content.ReadFromJsonAsync<LinkResponse>();
+        result!.Slug.Should().Be("my-custom-slug");
+    }
+
+    [Fact]
+    public async Task CreateLink_WithDuplicateSlug_ReturnsConflict()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("create-link-dup@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new
+        {
+            DestinationUrl = "https://example.com",
+            Slug = "duplicate-slug"
+        });
+
+        // Act
+        var response = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new
+        {
+            DestinationUrl = "https://another.com",
+            Slug = "duplicate-slug"
+        });
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.Conflict);
+    }
+
+    [Fact]
+    public async Task CreateLink_WithInvalidUrl_ReturnsBadRequest()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("create-link-invalid@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        // Act
+        var response = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new
+        {
+            DestinationUrl = "not-a-valid-url"
+        });
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.BadRequest);
+    }
+
+    [Fact]
+    public async Task CreateLink_WithProject_AssignsToProject()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("create-link-proj@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var projectResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/projects", new { Name = "Test Project" });
+        var project = await projectResponse.Content.ReadFromJsonAsync<ProjectResponse>();
+
+        // Act
+        var response = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new
+        {
+            DestinationUrl = "https://example.com",
+            ProjectId = project!.Id
+        });
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.Created);
+        var result = await response.Content.ReadFromJsonAsync<LinkResponse>();
+        result!.ProjectId.Should().Be(project.Id);
+    }
+
+    [Fact]
+    public async Task ListLinks_WithValidWorkspace_ReturnsLinks()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("list-links@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new { DestinationUrl = "https://example1.com" });
+        await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new { DestinationUrl = "https://example2.com" });
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId}/links");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        var result = await response.Content.ReadFromJsonAsync<LinkListResponse>();
+        result!.Links.Should().HaveCountGreaterThanOrEqualTo(2);
+    }
+
+    [Fact]
+    public async Task ListLinks_FilterByProject_ReturnsFilteredLinks()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("list-links-proj@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var projectResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/projects", new { Name = "Filter Project" });
+        var project = await projectResponse.Content.ReadFromJsonAsync<ProjectResponse>();
+
+        await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new { DestinationUrl = "https://in-project.com", ProjectId = project!.Id });
+        await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new { DestinationUrl = "https://no-project.com" });
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId}/links?projectId={project.Id}");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        var result = await response.Content.ReadFromJsonAsync<LinkListResponse>();
+        result!.Links.Should().OnlyContain(l => l.ProjectId == project.Id);
+    }
+
+    [Fact]
+    public async Task GetLink_WithValidId_ReturnsLink()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("get-link@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new
+        {
+            DestinationUrl = "https://example.com",
+            Title = "Get Test"
+        });
+        var created = await createResponse.Content.ReadFromJsonAsync<LinkResponse>();
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId}/links/{created!.Id}");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        var result = await response.Content.ReadFromJsonAsync<LinkResponse>();
+        result!.Id.Should().Be(created.Id);
+        result.Title.Should().Be("Get Test");
+    }
+
+    [Fact]
+    public async Task GetLink_WithInvalidId_ReturnsNotFound()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("get-link-invalid@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId}/links/{Guid.NewGuid()}");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.NotFound);
+    }
+
+    [Fact]
+    public async Task UpdateLink_WithValidData_ReturnsUpdated()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("update-link@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new
+        {
+            DestinationUrl = "https://original.com",
+            Title = "Original"
+        });
+        var created = await createResponse.Content.ReadFromJsonAsync<LinkResponse>();
+
+        // Act
+        var response = await _client.PutAsJsonAsync($"/workspaces/{workspaceId}/links/{created!.Id}", new
+        {
+            DestinationUrl = "https://updated.com",
+            Title = "Updated"
+        });
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        var result = await response.Content.ReadFromJsonAsync<LinkResponse>();
+        result!.DestinationUrl.Should().Be("https://updated.com");
+        result.Title.Should().Be("Updated");
+    }
+
+    [Fact]
+    public async Task UpdateLink_SetStatus_UpdatesStatus()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("update-link-status@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new
+        {
+            DestinationUrl = "https://example.com"
+        });
+        var created = await createResponse.Content.ReadFromJsonAsync<LinkResponse>();
+
+        // Act
+        var response = await _client.PutAsJsonAsync($"/workspaces/{workspaceId}/links/{created!.Id}", new
+        {
+            Status = "Disabled"
+        });
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        var result = await response.Content.ReadFromJsonAsync<LinkResponse>();
+        result!.Status.Should().Be("Disabled");
+    }
+
+    [Fact]
+    public async Task UpdateLink_SetPassword_AddsPassword()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("update-link-pass@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new
+        {
+            DestinationUrl = "https://example.com"
+        });
+        var created = await createResponse.Content.ReadFromJsonAsync<LinkResponse>();
+        created!.HasPassword.Should().BeFalse();
+
+        // Act
+        var response = await _client.PutAsJsonAsync($"/workspaces/{workspaceId}/links/{created.Id}", new
+        {
+            Password = "secret123"
+        });
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        var result = await response.Content.ReadFromJsonAsync<LinkResponse>();
+        result!.HasPassword.Should().BeTrue();
+    }
+
+    [Fact]
+    public async Task UpdateLink_RemovePassword_RemovesPassword()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("update-link-rmpass@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new
+        {
+            DestinationUrl = "https://example.com"
+        });
+        var created = await createResponse.Content.ReadFromJsonAsync<LinkResponse>();
+
+        await _client.PutAsJsonAsync($"/workspaces/{workspaceId}/links/{created!.Id}", new { Password = "secret123" });
+
+        // Act
+        var response = await _client.PutAsJsonAsync($"/workspaces/{workspaceId}/links/{created.Id}", new
+        {
+            RemovePassword = true
+        });
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        var result = await response.Content.ReadFromJsonAsync<LinkResponse>();
+        result!.HasPassword.Should().BeFalse();
+    }
+
+    [Fact]
+    public async Task DeleteLink_WithValidId_ReturnsSuccess()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("delete-link@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new
+        {
+            DestinationUrl = "https://example.com"
+        });
+        var created = await createResponse.Content.ReadFromJsonAsync<LinkResponse>();
+
+        // Act
+        var response = await _client.DeleteAsync($"/workspaces/{workspaceId}/links/{created!.Id}");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+
+        // Verify it's deleted
+        var getResponse = await _client.GetAsync($"/workspaces/{workspaceId}/links/{created.Id}");
+        getResponse.StatusCode.Should().Be(HttpStatusCode.NotFound);
+    }
+
+    [Fact]
+    public async Task Link_CannotAccessOtherUsersLinks()
+    {
+        // Arrange - Create two users
+        var (token1, workspaceId1) = await SetupAuthAndWorkspaceAsync("user1-link@example.com");
+        var (token2, _) = await SetupAuthAndWorkspaceAsync("user2-link@example.com");
+
+        // Create link as user1
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token1);
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId1}/links", new
+        {
+            DestinationUrl = "https://user1.com"
+        });
+        var created = await createResponse.Content.ReadFromJsonAsync<LinkResponse>();
+
+        // Try to access as user2
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token2);
+
+        // Act
+        var getResponse = await _client.GetAsync($"/workspaces/{workspaceId1}/links/{created!.Id}");
+        var updateResponse = await _client.PutAsJsonAsync($"/workspaces/{workspaceId1}/links/{created.Id}", new { Title = "Hacked" });
+        var deleteResponse = await _client.DeleteAsync($"/workspaces/{workspaceId1}/links/{created.Id}");
+
+        // Assert - All should return NotFound (not exposing existence)
+        getResponse.StatusCode.Should().Be(HttpStatusCode.NotFound);
+        updateResponse.StatusCode.Should().Be(HttpStatusCode.NotFound);
+        deleteResponse.StatusCode.Should().Be(HttpStatusCode.NotFound);
+    }
+}

src/api.Tests/QRCodeEndpointTests.cs

@@ -0,0 +1,299 @@
+using System.Net;
+using System.Net.Http.Headers;
+using System.Net.Http.Json;
+using api.Features.Auth.Common;
+using api.Features.Links.Common;
+using api.Features.QRCodes.Common;
+using api.Features.Workspaces.Common;
+using FluentAssertions;
+
+namespace Api.Tests;
+
+public class QRCodeEndpointTests(ApiWebApplicationFactory factory)
+    : IClassFixture<ApiWebApplicationFactory>
+{
+    private readonly HttpClient _client = factory.CreateClient();
+
+    private async Task<(string Token, Guid WorkspaceId)> SetupAuthAndWorkspaceAsync(string email)
+    {
+        var response = await _client.PostAsJsonAsync("/auth/register", new { Email = email, Password = "password123" });
+        if (response.StatusCode == HttpStatusCode.Conflict)
+        {
+            response = await _client.PostAsJsonAsync("/auth/login", new { Email = email, Password = "password123" });
+        }
+        var authResult = await response.Content.ReadFromJsonAsync<AuthResponse>();
+        var token = authResult!.Token;
+
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var wsResponse = await _client.GetAsync("/workspaces");
+        var wsResult = await wsResponse.Content.ReadFromJsonAsync<WorkspaceListResponse>();
+        var workspaceId = wsResult!.Workspaces.First().Id;
+
+        return (token, workspaceId);
+    }
+
+    private async Task<LinkResponse> CreateLinkAsync(Guid workspaceId, string slug)
+    {
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new
+        {
+            DestinationUrl = "https://example.com",
+            Slug = slug
+        });
+        return (await createResponse.Content.ReadFromJsonAsync<LinkResponse>())!;
+    }
+
+    [Fact]
+    public async Task CreateQRCode_WithValidData_ReturnsCreated()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("qr-create@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var link = await CreateLinkAsync(workspaceId, "qr-create-link");
+
+        // Act
+        var response = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/qrcodes", new
+        {
+            ShortLinkId = link.Id
+        });
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.Created);
+        var result = await response.Content.ReadFromJsonAsync<QRCodeResponse>();
+        result.Should().NotBeNull();
+        result!.ShortLinkId.Should().Be(link.Id);
+        result.ShortLinkSlug.Should().Be(link.Slug);
+        result.Style.Should().NotBeNull();
+        result.Style.ForegroundColor.Should().Be("#000000");
+        result.Style.BackgroundColor.Should().Be("#FFFFFF");
+    }
+
+    [Fact]
+    public async Task CreateQRCode_WithCustomStyle_ReturnsCreatedWithStyle()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("qr-style@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var link = await CreateLinkAsync(workspaceId, "qr-style-link");
+
+        // Act
+        var response = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/qrcodes", new
+        {
+            ShortLinkId = link.Id,
+            Style = new
+            {
+                ForegroundColor = "#FF0000",
+                BackgroundColor = "#00FF00",
+                ErrorCorrectionLevel = "H"
+            }
+        });
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.Created);
+        var result = await response.Content.ReadFromJsonAsync<QRCodeResponse>();
+        result!.Style.ForegroundColor.Should().Be("#FF0000");
+        result.Style.BackgroundColor.Should().Be("#00FF00");
+        result.Style.ErrorCorrectionLevel.Should().Be("H");
+    }
+
+    [Fact]
+    public async Task CreateQRCode_WithoutShortLink_ReturnsBadRequest()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("qr-nolink@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        // Act
+        var response = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/qrcodes", new { });
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.BadRequest);
+    }
+
+    [Fact]
+    public async Task ListQRCodes_ReturnsQRCodes()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("qr-list@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var link = await CreateLinkAsync(workspaceId, "qr-list-link");
+        await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/qrcodes", new { ShortLinkId = link.Id });
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId}/qrcodes");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        var result = await response.Content.ReadFromJsonAsync<QRCodeListResponse>();
+        result!.QRCodes.Should().HaveCountGreaterThanOrEqualTo(1);
+    }
+
+    [Fact]
+    public async Task GetQRCode_WithValidId_ReturnsQRCode()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("qr-get@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var link = await CreateLinkAsync(workspaceId, "qr-get-link");
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/qrcodes", new { ShortLinkId = link.Id });
+        var created = await createResponse.Content.ReadFromJsonAsync<QRCodeResponse>();
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId}/qrcodes/{created!.Id}");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        var result = await response.Content.ReadFromJsonAsync<QRCodeResponse>();
+        result!.Id.Should().Be(created.Id);
+    }
+
+    [Fact]
+    public async Task GetQRCode_WithInvalidId_ReturnsNotFound()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("qr-get-invalid@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId}/qrcodes/{Guid.NewGuid()}");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.NotFound);
+    }
+
+    [Fact]
+    public async Task UpdateQRCode_WithValidData_ReturnsUpdated()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("qr-update@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var link = await CreateLinkAsync(workspaceId, "qr-update-link");
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/qrcodes", new { ShortLinkId = link.Id });
+        var created = await createResponse.Content.ReadFromJsonAsync<QRCodeResponse>();
+
+        // Act
+        var response = await _client.PutAsJsonAsync($"/workspaces/{workspaceId}/qrcodes/{created!.Id}", new
+        {
+            Style = new
+            {
+                ForegroundColor = "#0000FF",
+                BackgroundColor = "#FFFF00"
+            }
+        });
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        var result = await response.Content.ReadFromJsonAsync<QRCodeResponse>();
+        result!.Style.ForegroundColor.Should().Be("#0000FF");
+        result.Style.BackgroundColor.Should().Be("#FFFF00");
+    }
+
+    [Fact]
+    public async Task DeleteQRCode_WithValidId_ReturnsSuccess()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("qr-delete@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var link = await CreateLinkAsync(workspaceId, "qr-delete-link");
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/qrcodes", new { ShortLinkId = link.Id });
+        var created = await createResponse.Content.ReadFromJsonAsync<QRCodeResponse>();
+
+        // Act
+        var response = await _client.DeleteAsync($"/workspaces/{workspaceId}/qrcodes/{created!.Id}");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+
+        // Verify it's deleted
+        var getResponse = await _client.GetAsync($"/workspaces/{workspaceId}/qrcodes/{created.Id}");
+        getResponse.StatusCode.Should().Be(HttpStatusCode.NotFound);
+    }
+
+    [Fact]
+    public async Task PreviewQRCode_ReturnsDataUrl()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("qr-preview@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var link = await CreateLinkAsync(workspaceId, "qr-preview-link");
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/qrcodes", new { ShortLinkId = link.Id });
+        var created = await createResponse.Content.ReadFromJsonAsync<QRCodeResponse>();
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId}/qrcodes/{created!.Id}/preview");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        var result = await response.Content.ReadFromJsonAsync<QRCodePreviewResponse>();
+        result!.DataUrl.Should().StartWith("data:image/png;base64,");
+        result.Format.Should().Be("png");
+    }
+
+    [Fact]
+    public async Task ExportQRCode_AsPng_ReturnsPngImage()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("qr-export-png@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var link = await CreateLinkAsync(workspaceId, "qr-export-png-link");
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/qrcodes", new { ShortLinkId = link.Id });
+        var created = await createResponse.Content.ReadFromJsonAsync<QRCodeResponse>();
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId}/qrcodes/{created!.Id}/export?format=png");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        response.Content.Headers.ContentType!.MediaType.Should().Be("image/png");
+    }
+
+    [Fact]
+    public async Task ExportQRCode_AsSvg_ReturnsSvgImage()
+    {
+        // Arrange
+        var (token, workspaceId) = await SetupAuthAndWorkspaceAsync("qr-export-svg@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var link = await CreateLinkAsync(workspaceId, "qr-export-svg-link");
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/qrcodes", new { ShortLinkId = link.Id });
+        var created = await createResponse.Content.ReadFromJsonAsync<QRCodeResponse>();
+
+        // Act
+        var response = await _client.GetAsync($"/workspaces/{workspaceId}/qrcodes/{created!.Id}/export?format=svg");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        response.Content.Headers.ContentType!.MediaType.Should().Be("image/svg+xml");
+    }
+
+    [Fact]
+    public async Task QRCode_CannotAccessOtherUsersQRCode()
+    {
+        // Arrange - Create two users
+        var (token1, workspaceId1) = await SetupAuthAndWorkspaceAsync("qr-user1@example.com");
+        var link = await CreateLinkAsync(workspaceId1, "qr-user1-link");
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId1}/qrcodes", new { ShortLinkId = link.Id });
+        var created = await createResponse.Content.ReadFromJsonAsync<QRCodeResponse>();
+
+        var (token2, _) = await SetupAuthAndWorkspaceAsync("qr-user2@example.com");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token2);
+
+        // Act
+        var getResponse = await _client.GetAsync($"/workspaces/{workspaceId1}/qrcodes/{created!.Id}");
+        var updateResponse = await _client.PutAsJsonAsync($"/workspaces/{workspaceId1}/qrcodes/{created.Id}", new { });
+        var deleteResponse = await _client.DeleteAsync($"/workspaces/{workspaceId1}/qrcodes/{created.Id}");
+
+        // Assert - All should return NotFound
+        getResponse.StatusCode.Should().Be(HttpStatusCode.NotFound);
+        updateResponse.StatusCode.Should().Be(HttpStatusCode.NotFound);
+        deleteResponse.StatusCode.Should().Be(HttpStatusCode.NotFound);
+    }
+}

src/api.Tests/RedirectEndpointTests.cs

@@ -0,0 +1,215 @@
+using System.Net;
+using System.Net.Http.Headers;
+using System.Net.Http.Json;
+using api.Features.Auth.Common;
+using api.Features.Links.Common;
+using api.Features.Workspaces.Common;
+using FluentAssertions;
+
+namespace Api.Tests;
+
+public class RedirectEndpointTests : IClassFixture<ApiWebApplicationFactory>
+{
+    private readonly HttpClient _client;
+    private readonly HttpClient _noRedirectClient;
+
+    public RedirectEndpointTests(ApiWebApplicationFactory factory)
+    {
+        _client = factory.CreateClient();
+        // Create a client that doesn't follow redirects
+        _noRedirectClient = factory.CreateClient(new Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactoryClientOptions
+        {
+            AllowAutoRedirect = false
+        });
+    }
+
+    private async Task<(string Token, Guid WorkspaceId)> SetupAuthAndWorkspaceAsync(string email)
+    {
+        var response = await _client.PostAsJsonAsync("/auth/register", new { Email = email, Password = "password123" });
+        if (response.StatusCode == HttpStatusCode.Conflict)
+        {
+            response = await _client.PostAsJsonAsync("/auth/login", new { Email = email, Password = "password123" });
+        }
+        var authResult = await response.Content.ReadFromJsonAsync<AuthResponse>();
+        var token = authResult!.Token;
+
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+        var wsResponse = await _client.GetAsync("/workspaces");
+        var wsResult = await wsResponse.Content.ReadFromJsonAsync<WorkspaceListResponse>();
+        var workspaceId = wsResult!.Workspaces.First().Id;
+
+        return (token, workspaceId);
+    }
+
+    private async Task<LinkResponse> CreateLinkAsync(Guid workspaceId, string destinationUrl, string? slug = null, string? password = null)
+    {
+        var createResponse = await _client.PostAsJsonAsync($"/workspaces/{workspaceId}/links", new
+        {
+            DestinationUrl = destinationUrl,
+            Slug = slug
+        });
+        var link = await createResponse.Content.ReadFromJsonAsync<LinkResponse>();
+
+        if (password != null)
+        {
+            await _client.PutAsJsonAsync($"/workspaces/{workspaceId}/links/{link!.Id}", new { Password = password });
+            var updated = await _client.GetAsync($"/workspaces/{workspaceId}/links/{link.Id}");
+            return (await updated.Content.ReadFromJsonAsync<LinkResponse>())!;
+        }
+
+        return link!;
+    }
+
+    [Fact]
+    public async Task Redirect_WithValidSlug_Returns302Redirect()
+    {
+        // Arrange
+        var (_, workspaceId) = await SetupAuthAndWorkspaceAsync("redirect-valid@example.com");
+        var link = await CreateLinkAsync(workspaceId, "https://example.com", "test-redirect");
+
+        // Act - Use no-redirect client to capture the redirect
+        var response = await _noRedirectClient.GetAsync($"/{link.Slug}");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.Redirect);
+        response.Headers.Location.Should().NotBeNull();
+        response.Headers.Location!.ToString().Should().StartWith("https://example.com");
+    }
+
+    [Fact]
+    public async Task Redirect_WithNonExistentSlug_Returns404()
+    {
+        // Act
+        var response = await _client.GetAsync("/nonexistent-slug-12345");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.NotFound);
+    }
+
+    [Fact]
+    public async Task Redirect_WithDisabledLink_Returns404()
+    {
+        // Arrange
+        var (_, workspaceId) = await SetupAuthAndWorkspaceAsync("redirect-disabled@example.com");
+        var link = await CreateLinkAsync(workspaceId, "https://example.com", "disabled-link");
+
+        // Disable the link
+        await _client.PutAsJsonAsync($"/workspaces/{workspaceId}/links/{link.Id}", new { Status = "Disabled" });
+
+        // Act
+        var response = await _client.GetAsync($"/{link.Slug}");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.NotFound);
+    }
+
+    [Fact]
+    public async Task Redirect_WithExpiredLink_Returns410()
+    {
+        // Arrange
+        var (_, workspaceId) = await SetupAuthAndWorkspaceAsync("redirect-expired@example.com");
+        var link = await CreateLinkAsync(workspaceId, "https://example.com", "expired-link");
+
+        // Set expiration to the past
+        await _client.PutAsJsonAsync($"/workspaces/{workspaceId}/links/{link.Id}", new
+        {
+            ExpiresAt = DateTime.UtcNow.AddDays(-1)
+        });
+
+        // Act
+        var response = await _client.GetAsync($"/{link.Slug}");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.Gone);
+    }
+
+    [Fact]
+    public async Task Redirect_WithPasswordProtectedLink_Returns401()
+    {
+        // Arrange
+        var (_, workspaceId) = await SetupAuthAndWorkspaceAsync("redirect-password@example.com");
+        var link = await CreateLinkAsync(workspaceId, "https://example.com", "password-link", password: "secret123");
+
+        // Act
+        var response = await _client.GetAsync($"/{link.Slug}");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.Unauthorized);
+        response.Headers.Contains("X-Password-Required").Should().BeTrue();
+    }
+
+    [Fact]
+    public async Task PasswordRedirect_WithCorrectPassword_Returns302Redirect()
+    {
+        // Arrange
+        var (_, workspaceId) = await SetupAuthAndWorkspaceAsync("redirect-pass-ok@example.com");
+        var link = await CreateLinkAsync(workspaceId, "https://example.com", "password-ok-link", password: "secret123");
+
+        // Act
+        var response = await _noRedirectClient.PostAsJsonAsync($"/{link.Slug}", new { Password = "secret123" });
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.Redirect);
+        response.Headers.Location!.ToString().Should().StartWith("https://example.com");
+    }
+
+    [Fact]
+    public async Task PasswordRedirect_WithWrongPassword_Returns401()
+    {
+        // Arrange
+        var (_, workspaceId) = await SetupAuthAndWorkspaceAsync("redirect-pass-wrong@example.com");
+        var link = await CreateLinkAsync(workspaceId, "https://example.com", "password-wrong-link", password: "secret123");
+
+        // Act
+        var response = await _client.PostAsJsonAsync($"/{link.Slug}", new { Password = "wrongpassword" });
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.Unauthorized);
+    }
+
+    [Fact]
+    public async Task PasswordRedirect_WithEmptyPassword_Returns400()
+    {
+        // Arrange
+        var (_, workspaceId) = await SetupAuthAndWorkspaceAsync("redirect-pass-empty@example.com");
+        var link = await CreateLinkAsync(workspaceId, "https://example.com", "password-empty-link", password: "secret123");
+
+        // Act
+        var response = await _client.PostAsJsonAsync($"/{link.Slug}", new { Password = "" });
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.BadRequest);
+    }
+
+    [Fact]
+    public async Task PasswordRedirect_NonProtectedLink_RedirectsAnyway()
+    {
+        // Arrange
+        var (_, workspaceId) = await SetupAuthAndWorkspaceAsync("redirect-no-pass@example.com");
+        var link = await CreateLinkAsync(workspaceId, "https://example.com", "no-password-link");
+
+        // Act - POST to non-password protected link
+        var response = await _noRedirectClient.PostAsJsonAsync($"/{link.Slug}", new { Password = "anything" });
+
+        // Assert - Should still redirect since link doesn't require password
+        response.StatusCode.Should().Be(HttpStatusCode.Redirect);
+    }
+
+    [Fact]
+    public async Task Redirect_DoesNotRequireAuthentication()
+    {
+        // Arrange
+        var (_, workspaceId) = await SetupAuthAndWorkspaceAsync("redirect-anon@example.com");
+        var link = await CreateLinkAsync(workspaceId, "https://example.com", "anon-redirect-link");
+
+        // Remove auth header
+        _noRedirectClient.DefaultRequestHeaders.Authorization = null;
+
+        // Act
+        var response = await _noRedirectClient.GetAsync($"/{link.Slug}");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.Redirect);
+    }
+}

src/api/Features/Analytics/Common/AnalyticsResponses.cs

@@ -0,0 +1,38 @@
+namespace api.Features.Analytics.Common;
+
+public record AnalyticsSummary(
+    int TotalClicks,
+    int TotalScans,
+    int UniqueVisitors,
+    DateTime? FirstEvent,
+    DateTime? LastEvent
+);
+
+public record TimeSeriesPoint(
+    DateTime Date,
+    int Clicks,
+    int Scans
+);
+
+public record BreakdownItem(
+    string Key,
+    int Count,
+    double Percentage
+);
+
+public record WorkspaceAnalyticsResponse(
+    AnalyticsSummary Summary,
+    IEnumerable<TimeSeriesPoint> TimeSeries,
+    IEnumerable<BreakdownItem> TopLinks,
+    IEnumerable<BreakdownItem> DeviceBreakdown,
+    IEnumerable<BreakdownItem> ReferrerBreakdown
+);
+
+public record LinkAnalyticsResponse(
+    Guid LinkId,
+    string Slug,
+    AnalyticsSummary Summary,
+    IEnumerable<TimeSeriesPoint> TimeSeries,
+    IEnumerable<BreakdownItem> DeviceBreakdown,
+    IEnumerable<BreakdownItem> ReferrerBreakdown
+);

src/api/Features/Analytics/Endpoints/LinkAnalyticsEndpoint.cs

@@ -0,0 +1,137 @@
+using System.Security.Claims;
+using api.Data;
+using api.Features.Analytics.Common;
+using api.Features.Auth.Common;
+using api.Models;
+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+
+namespace api.Features.Analytics.Endpoints;
+
+public class LinkAnalyticsRequest
+{
+    public Guid WorkspaceId { get; set; }
+    public Guid Id { get; set; }
+    public string? Period { get; set; } // 24h, 7d, 30d, or null for all time
+}
+
+public class LinkAnalyticsEndpoint(AppDbContext db)
+    : Endpoint<LinkAnalyticsRequest, LinkAnalyticsResponse>
+{
+    public override void Configure()
+    {
+        Get("/workspaces/{WorkspaceId}/links/{Id}/analytics");
+    }
+
+    public override async Task HandleAsync(LinkAnalyticsRequest req, CancellationToken ct)
+    {
+        var userId = Guid.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);
+
+        // Get link and verify ownership
+        var link = await db.ShortLinks
+            .Where(l => l.Id == req.Id && l.WorkspaceId == req.WorkspaceId && l.Workspace.OwnerUserId == userId)
+            .Select(l => new { l.Id, l.Slug })
+            .FirstOrDefaultAsync(ct);
+
+        if (link is null)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("Link not found"), 404, cancellation: ct);
+            return;
+        }
+
+        // Determine time filter
+        var startDate = GetStartDate(req.Period);
+
+        // Query events for this link
+        var eventsQuery = db.Events
+            .Where(e => e.ShortLinkId == req.Id);
+
+        if (startDate.HasValue)
+        {
+            eventsQuery = eventsQuery.Where(e => e.Timestamp >= startDate.Value);
+        }
+
+        var events = await eventsQuery.ToListAsync(ct);
+        var totalEvents = events.Count;
+
+        // Build summary
+        var summary = new AnalyticsSummary(
+            TotalClicks: events.Count(e => e.Type == EventType.Click),
+            TotalScans: events.Count(e => e.Type == EventType.Scan),
+            UniqueVisitors: events.Select(e => e.IpHash).Distinct().Count(),
+            FirstEvent: events.MinBy(e => e.Timestamp)?.Timestamp,
+            LastEvent: events.MaxBy(e => e.Timestamp)?.Timestamp
+        );
+
+        // Build time series
+        var timeSeries = events
+            .GroupBy(e => e.Timestamp.Date)
+            .OrderBy(g => g.Key)
+            .Select(g => new TimeSeriesPoint(
+                Date: g.Key,
+                Clicks: g.Count(e => e.Type == EventType.Click),
+                Scans: g.Count(e => e.Type == EventType.Scan)
+            ))
+            .ToList();
+
+        // Device breakdown
+        var deviceBreakdown = events
+            .Where(e => !string.IsNullOrEmpty(e.DeviceType))
+            .GroupBy(e => e.DeviceType!)
+            .OrderByDescending(g => g.Count())
+            .Select(g => new BreakdownItem(
+                g.Key,
+                g.Count(),
+                totalEvents > 0 ? Math.Round((double)g.Count() / totalEvents * 100, 1) : 0
+            ))
+            .ToList();
+
+        // Referrer breakdown
+        var referrerBreakdown = events
+            .Where(e => !string.IsNullOrEmpty(e.Referrer))
+            .GroupBy(e => ExtractDomain(e.Referrer!))
+            .OrderByDescending(g => g.Count())
+            .Take(10)
+            .Select(g => new BreakdownItem(
+                g.Key,
+                g.Count(),
+                totalEvents > 0 ? Math.Round((double)g.Count() / totalEvents * 100, 1) : 0
+            ))
+            .ToList();
+
+        var response = new LinkAnalyticsResponse(
+            LinkId: link.Id,
+            Slug: link.Slug,
+            Summary: summary,
+            TimeSeries: timeSeries,
+            DeviceBreakdown: deviceBreakdown,
+            ReferrerBreakdown: referrerBreakdown
+        );
+
+        await HttpContext.Response.SendAsync(response, 200, cancellation: ct);
+    }
+
+    private static DateTime? GetStartDate(string? period)
+    {
+        return period?.ToLower() switch
+        {
+            "24h" => DateTime.UtcNow.AddHours(-24),
+            "7d" => DateTime.UtcNow.AddDays(-7),
+            "30d" => DateTime.UtcNow.AddDays(-30),
+            _ => null
+        };
+    }
+
+    private static string ExtractDomain(string url)
+    {
+        try
+        {
+            var uri = new Uri(url);
+            return uri.Host;
+        }
+        catch
+        {
+            return url.Length > 50 ? url[..50] : url;
+        }
+    }
+}

src/api/Features/Analytics/Endpoints/WorkspaceAnalyticsEndpoint.cs

@@ -0,0 +1,151 @@
+using System.Security.Claims;
+using api.Data;
+using api.Features.Analytics.Common;
+using api.Features.Auth.Common;
+using api.Models;
+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+
+namespace api.Features.Analytics.Endpoints;
+
+public class WorkspaceAnalyticsRequest
+{
+    public Guid WorkspaceId { get; set; }
+    public string? Period { get; set; } // 24h, 7d, 30d, or null for all time
+}
+
+public class WorkspaceAnalyticsEndpoint(AppDbContext db)
+    : Endpoint<WorkspaceAnalyticsRequest, WorkspaceAnalyticsResponse>
+{
+    public override void Configure()
+    {
+        Get("/workspaces/{WorkspaceId}/analytics");
+    }
+
+    public override async Task HandleAsync(WorkspaceAnalyticsRequest req, CancellationToken ct)
+    {
+        var userId = Guid.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);
+
+        // Verify workspace ownership
+        var workspaceExists = await db.Workspaces
+            .AnyAsync(w => w.Id == req.WorkspaceId && w.OwnerUserId == userId, ct);
+
+        if (!workspaceExists)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("Workspace not found"), 404, cancellation: ct);
+            return;
+        }
+
+        // Determine time filter
+        var startDate = GetStartDate(req.Period);
+
+        // Query events
+        var eventsQuery = db.Events
+            .Where(e => e.WorkspaceId == req.WorkspaceId);
+
+        if (startDate.HasValue)
+        {
+            eventsQuery = eventsQuery.Where(e => e.Timestamp >= startDate.Value);
+        }
+
+        var events = await eventsQuery.ToListAsync(ct);
+        var totalEvents = events.Count;
+
+        // Get summary
+        var summary = new AnalyticsSummary(
+            TotalClicks: events.Count(e => e.Type == EventType.Click),
+            TotalScans: events.Count(e => e.Type == EventType.Scan),
+            UniqueVisitors: events.Select(e => e.IpHash).Distinct().Count(),
+            FirstEvent: events.Count > 0 ? events.Min(e => e.Timestamp) : null,
+            LastEvent: events.Count > 0 ? events.Max(e => e.Timestamp) : null
+        );
+
+        // Get time series
+        var timeSeries = events
+            .GroupBy(e => e.Timestamp.Date)
+            .OrderBy(g => g.Key)
+            .Select(g => new TimeSeriesPoint(
+                Date: g.Key,
+                Clicks: g.Count(e => e.Type == EventType.Click),
+                Scans: g.Count(e => e.Type == EventType.Scan)
+            ))
+            .ToList();
+
+        // Get top links - group events by link and get slugs
+        var linkIds = events.Select(e => e.ShortLinkId).Distinct().ToList();
+        var linkSlugs = await db.ShortLinks
+            .Where(l => linkIds.Contains(l.Id))
+            .Select(l => new { l.Id, l.Slug })
+            .ToDictionaryAsync(l => l.Id, l => l.Slug, ct);
+
+        var topLinks = events
+            .GroupBy(e => e.ShortLinkId)
+            .OrderByDescending(g => g.Count())
+            .Take(10)
+            .Select(g => new BreakdownItem(
+                linkSlugs.GetValueOrDefault(g.Key, "unknown"),
+                g.Count(),
+                totalEvents > 0 ? Math.Round((double)g.Count() / totalEvents * 100, 1) : 0
+            ))
+            .ToList();
+
+        // Get device breakdown
+        var deviceBreakdown = events
+            .Where(e => !string.IsNullOrEmpty(e.DeviceType))
+            .GroupBy(e => e.DeviceType!)
+            .OrderByDescending(g => g.Count())
+            .Select(g => new BreakdownItem(
+                g.Key,
+                g.Count(),
+                totalEvents > 0 ? Math.Round((double)g.Count() / totalEvents * 100, 1) : 0
+            ))
+            .ToList();
+
+        // Get referrer breakdown
+        var referrerBreakdown = events
+            .Where(e => !string.IsNullOrEmpty(e.Referrer))
+            .GroupBy(e => ExtractDomain(e.Referrer!))
+            .OrderByDescending(g => g.Count())
+            .Take(10)
+            .Select(g => new BreakdownItem(
+                g.Key,
+                g.Count(),
+                totalEvents > 0 ? Math.Round((double)g.Count() / totalEvents * 100, 1) : 0
+            ))
+            .ToList();
+
+        var response = new WorkspaceAnalyticsResponse(
+            Summary: summary,
+            TimeSeries: timeSeries,
+            TopLinks: topLinks,
+            DeviceBreakdown: deviceBreakdown,
+            ReferrerBreakdown: referrerBreakdown
+        );
+
+        await HttpContext.Response.SendAsync(response, 200, cancellation: ct);
+    }
+
+    private static DateTime? GetStartDate(string? period)
+    {
+        return period?.ToLower() switch
+        {
+            "24h" => DateTime.UtcNow.AddHours(-24),
+            "7d" => DateTime.UtcNow.AddDays(-7),
+            "30d" => DateTime.UtcNow.AddDays(-30),
+            _ => null
+        };
+    }
+
+    private static string ExtractDomain(string url)
+    {
+        try
+        {
+            var uri = new Uri(url);
+            return uri.Host;
+        }
+        catch
+        {
+            return url.Length > 50 ? url[..50] : url;
+        }
+    }
+}

src/api/Features/Events/Services/EventTrackingService.cs

@@ -0,0 +1,166 @@
+using System.Security.Cryptography;
+using System.Text;
+using System.Text.RegularExpressions;
+using api.Data;
+using api.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace api.Features.Events.Services;
+
+public interface IEventTrackingService
+{
+    Task TrackClickAsync(Guid workspaceId, Guid shortLinkId, HttpContext context);
+    Task TrackScanAsync(Guid workspaceId, Guid shortLinkId, Guid qrCodeId, HttpContext context);
+}
+
+public class EventTrackingService(IServiceScopeFactory scopeFactory, ILogger<EventTrackingService> logger)
+    : IEventTrackingService
+{
+    // Dedupe window - same visitor clicking same link within this window counts as one
+    private static readonly TimeSpan DedupeWindow = TimeSpan.FromMinutes(30);
+
+    public Task TrackClickAsync(Guid workspaceId, Guid shortLinkId, HttpContext context)
+    {
+        // Fire and forget - don't block the redirect
+        _ = Task.Run(async () =>
+        {
+            try
+            {
+                await TrackEventInternalAsync(workspaceId, shortLinkId, null, EventType.Click, context);
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Failed to track click event for link {ShortLinkId}", shortLinkId);
+            }
+        });
+
+        return Task.CompletedTask;
+    }
+
+    public Task TrackScanAsync(Guid workspaceId, Guid shortLinkId, Guid qrCodeId, HttpContext context)
+    {
+        // Fire and forget - don't block the redirect
+        _ = Task.Run(async () =>
+        {
+            try
+            {
+                await TrackEventInternalAsync(workspaceId, shortLinkId, qrCodeId, EventType.Scan, context);
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Failed to track scan event for QR {QRCodeId}", qrCodeId);
+            }
+        });
+
+        return Task.CompletedTask;
+    }
+
+    private async Task TrackEventInternalAsync(
+        Guid workspaceId,
+        Guid shortLinkId,
+        Guid? qrCodeId,
+        EventType eventType,
+        HttpContext context)
+    {
+        // Create a new scope for database access (since we're in a background task)
+        using var scope = scopeFactory.CreateScope();
+        var db = scope.ServiceProvider.GetRequiredService<AppDbContext>();
+
+        var ipAddress = GetClientIpAddress(context);
+        var userAgent = context.Request.Headers.UserAgent.ToString();
+        var referrer = context.Request.Headers.Referer.ToString();
+
+        var ipHash = HashIpAddress(ipAddress);
+        var deviceType = ParseDeviceType(userAgent);
+        var dedupeKey = GenerateDedupeKey(ipHash, shortLinkId, qrCodeId);
+
+        // Check for duplicate within the dedupe window
+        var cutoff = DateTime.UtcNow.Subtract(DedupeWindow);
+        var isDuplicate = await db.Events
+            .AnyAsync(e => e.DedupeKey == dedupeKey && e.Timestamp > cutoff);
+
+        if (isDuplicate)
+        {
+            logger.LogDebug("Skipping duplicate event for link {ShortLinkId}", shortLinkId);
+            return;
+        }
+
+        var evt = new Event
+        {
+            WorkspaceId = workspaceId,
+            ShortLinkId = shortLinkId,
+            QRCodeId = qrCodeId,
+            Type = eventType,
+            Timestamp = DateTime.UtcNow,
+            IpHash = ipHash,
+            UserAgent = TruncateString(userAgent, 512),
+            Referrer = TruncateString(referrer, 2048),
+            CountryCode = null, // TODO: GeoIP lookup
+            DeviceType = deviceType,
+            DedupeKey = dedupeKey
+        };
+
+        db.Events.Add(evt);
+        await db.SaveChangesAsync();
+
+        logger.LogDebug("Tracked {EventType} event for link {ShortLinkId}", eventType, shortLinkId);
+    }
+
+    private static string GetClientIpAddress(HttpContext context)
+    {
+        // Check for forwarded headers (when behind a proxy/load balancer)
+        var forwardedFor = context.Request.Headers["X-Forwarded-For"].FirstOrDefault();
+        if (!string.IsNullOrEmpty(forwardedFor))
+        {
+            // Take the first IP in the chain (client IP)
+            return forwardedFor.Split(',')[0].Trim();
+        }
+
+        return context.Connection.RemoteIpAddress?.ToString() ?? "unknown";
+    }
+
+    private static string HashIpAddress(string ipAddress)
+    {
+        // Use SHA256 to hash the IP for privacy
+        var bytes = SHA256.HashData(Encoding.UTF8.GetBytes(ipAddress));
+        return Convert.ToHexString(bytes)[..16]; // First 16 chars is enough
+    }
+
+    private static string ParseDeviceType(string userAgent)
+    {
+        if (string.IsNullOrEmpty(userAgent))
+            return "Unknown";
+
+        var ua = userAgent.ToLowerInvariant();
+
+        // Check for mobile devices
+        if (Regex.IsMatch(ua, @"mobile|android|iphone|ipad|ipod|blackberry|windows phone"))
+        {
+            if (Regex.IsMatch(ua, @"ipad|tablet|android(?!.*mobile)"))
+                return "Tablet";
+            return "Mobile";
+        }
+
+        // Check for bots/crawlers
+        if (Regex.IsMatch(ua, @"bot|crawler|spider|slurp|googlebot|bingbot"))
+            return "Bot";
+
+        return "Desktop";
+    }
+
+    private static string GenerateDedupeKey(string ipHash, Guid shortLinkId, Guid? qrCodeId)
+    {
+        // Combine IP hash + link ID + optional QR ID
+        var combined = $"{ipHash}:{shortLinkId}:{qrCodeId?.ToString() ?? "none"}";
+        var bytes = SHA256.HashData(Encoding.UTF8.GetBytes(combined));
+        return Convert.ToHexString(bytes)[..32];
+    }
+
+    private static string? TruncateString(string? value, int maxLength)
+    {
+        if (string.IsNullOrEmpty(value))
+            return null;
+
+        return value.Length <= maxLength ? value : value[..maxLength];
+    }
+}

src/api/Features/Links/Common/LinkResponses.cs

@@ -0,0 +1,20 @@
+namespace api.Features.Links.Common;
+
+public record LinkResponse(
+    Guid Id,
+    Guid WorkspaceId,
+    Guid? ProjectId,
+    Guid? DomainId,
+    string Slug,
+    string DestinationUrl,
+    string? Title,
+    string Status,
+    DateTime? ExpiresAt,
+    bool HasPassword,
+    DateTime CreatedAt,
+    DateTime UpdatedAt
+);
+
+public record LinkListResponse(
+    IEnumerable<LinkResponse> Links
+);

src/api/Features/Links/Common/SlugGenerator.cs

@@ -0,0 +1,14 @@
+using System.Security.Cryptography;
+
+namespace api.Features.Links.Common;
+
+public static class SlugGenerator
+{
+    private const string Chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+    private const int DefaultLength = 7;
+
+    public static string Generate(int length = DefaultLength)
+    {
+        return RandomNumberGenerator.GetString(Chars, length);
+    }
+}

src/api/Features/Links/Endpoints/CreateLinkEndpoint.cs

@@ -0,0 +1,139 @@
+using System.Security.Claims;
+using api.Data;
+using api.Features.Auth.Common;
+using api.Features.Links.Common;
+using api.Models;
+using FastEndpoints;
+using FluentValidation;
+using Microsoft.EntityFrameworkCore;
+
+namespace api.Features.Links.Endpoints;
+
+public class CreateLinkRequest
+{
+    public Guid WorkspaceId { get; set; }
+    public string DestinationUrl { get; set; } = string.Empty;
+    public string? Slug { get; set; }
+    public string? Title { get; set; }
+    public Guid? ProjectId { get; set; }
+}
+
+public class CreateLinkValidator : Validator<CreateLinkRequest>
+{
+    public CreateLinkValidator()
+    {
+        RuleFor(x => x.DestinationUrl)
+            .NotEmpty().WithMessage("Destination URL is required")
+            .MaximumLength(2048).WithMessage("Destination URL must not exceed 2048 characters")
+            .Must(BeAValidUrl).WithMessage("Destination URL must be a valid URL");
+
+        RuleFor(x => x.Slug)
+            .MaximumLength(50).WithMessage("Slug must not exceed 50 characters")
+            .Matches(@"^[a-zA-Z0-9_-]*$").WithMessage("Slug can only contain letters, numbers, hyphens, and underscores")
+            .When(x => !string.IsNullOrEmpty(x.Slug));
+
+        RuleFor(x => x.Title)
+            .MaximumLength(255).WithMessage("Title must not exceed 255 characters");
+    }
+
+    private static bool BeAValidUrl(string url)
+    {
+        return Uri.TryCreate(url, UriKind.Absolute, out var uri)
+               && (uri.Scheme == Uri.UriSchemeHttp || uri.Scheme == Uri.UriSchemeHttps);
+    }
+}
+
+public class CreateLinkEndpoint(AppDbContext db)
+    : Endpoint<CreateLinkRequest, LinkResponse>
+{
+    public override void Configure()
+    {
+        Post("/workspaces/{WorkspaceId}/links");
+    }
+
+    public override async Task HandleAsync(CreateLinkRequest req, CancellationToken ct)
+    {
+        var userId = Guid.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);
+
+        // Verify workspace ownership
+        var workspaceExists = await db.Workspaces
+            .AnyAsync(w => w.Id == req.WorkspaceId && w.OwnerUserId == userId, ct);
+
+        if (!workspaceExists)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("Workspace not found"), 404, cancellation: ct);
+            return;
+        }
+
+        // Verify project belongs to workspace if specified
+        if (req.ProjectId.HasValue)
+        {
+            var projectExists = await db.Projects
+                .AnyAsync(p => p.Id == req.ProjectId.Value && p.WorkspaceId == req.WorkspaceId, ct);
+
+            if (!projectExists)
+            {
+                await HttpContext.Response.SendAsync(new MessageResponse("Project not found"), 404, cancellation: ct);
+                return;
+            }
+        }
+
+        // Generate or validate slug
+        var slug = req.Slug;
+        if (string.IsNullOrEmpty(slug))
+        {
+            // Auto-generate unique slug
+            do
+            {
+                slug = SlugGenerator.Generate();
+            } while (await db.ShortLinks.AnyAsync(l => l.Slug == slug && l.DomainId == null, ct));
+        }
+        else
+        {
+            // Check if custom slug is already taken (on default domain)
+            var slugExists = await db.ShortLinks
+                .AnyAsync(l => l.Slug == slug && l.DomainId == null, ct);
+
+            if (slugExists)
+            {
+                await HttpContext.Response.SendAsync(new MessageResponse("Slug is already taken"), 409, cancellation: ct);
+                return;
+            }
+        }
+
+        var now = DateTime.UtcNow;
+        var link = new ShortLink
+        {
+            Id = Guid.NewGuid(),
+            WorkspaceId = req.WorkspaceId,
+            ProjectId = req.ProjectId,
+            DomainId = null, // Default domain for now
+            Slug = slug,
+            DestinationUrl = req.DestinationUrl,
+            Title = req.Title,
+            Status = ShortLinkStatus.Active,
+            CreatedAt = now,
+            UpdatedAt = now
+        };
+
+        db.ShortLinks.Add(link);
+        await db.SaveChangesAsync(ct);
+
+        var response = new LinkResponse(
+            link.Id,
+            link.WorkspaceId,
+            link.ProjectId,
+            link.DomainId,
+            link.Slug,
+            link.DestinationUrl,
+            link.Title,
+            link.Status.ToString(),
+            link.ExpiresAt,
+            link.PasswordHash != null,
+            link.CreatedAt,
+            link.UpdatedAt
+        );
+
+        await HttpContext.Response.SendAsync(response, 201, cancellation: ct);
+    }
+}

src/api/Features/Links/Endpoints/DeleteLinkEndpoint.cs

@@ -0,0 +1,42 @@
+using System.Security.Claims;
+using api.Data;
+using api.Features.Auth.Common;
+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+
+namespace api.Features.Links.Endpoints;
+
+public class DeleteLinkRequest
+{
+    public Guid WorkspaceId { get; set; }
+    public Guid Id { get; set; }
+}
+
+public class DeleteLinkEndpoint(AppDbContext db)
+    : Endpoint<DeleteLinkRequest>
+{
+    public override void Configure()
+    {
+        Delete("/workspaces/{WorkspaceId}/links/{Id}");
+    }
+
+    public override async Task HandleAsync(DeleteLinkRequest req, CancellationToken ct)
+    {
+        var userId = Guid.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);
+
+        var link = await db.ShortLinks
+            .Include(l => l.Workspace)
+            .FirstOrDefaultAsync(l => l.Id == req.Id && l.WorkspaceId == req.WorkspaceId && l.Workspace.OwnerUserId == userId, ct);
+
+        if (link is null)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("Link not found"), 404, cancellation: ct);
+            return;
+        }
+
+        db.ShortLinks.Remove(link);
+        await db.SaveChangesAsync(ct);
+
+        await HttpContext.Response.SendAsync(new MessageResponse("Link deleted"), 200, cancellation: ct);
+    }
+}

src/api/Features/Links/Endpoints/GetLinkEndpoint.cs

@@ -0,0 +1,54 @@
+using System.Security.Claims;
+using api.Data;
+using api.Features.Auth.Common;
+using api.Features.Links.Common;
+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+
+namespace api.Features.Links.Endpoints;
+
+public class GetLinkRequest
+{
+    public Guid WorkspaceId { get; set; }
+    public Guid Id { get; set; }
+}
+
+public class GetLinkEndpoint(AppDbContext db)
+    : Endpoint<GetLinkRequest, LinkResponse>
+{
+    public override void Configure()
+    {
+        Get("/workspaces/{WorkspaceId}/links/{Id}");
+    }
+
+    public override async Task HandleAsync(GetLinkRequest req, CancellationToken ct)
+    {
+        var userId = Guid.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);
+
+        var link = await db.ShortLinks
+            .Where(l => l.Id == req.Id && l.WorkspaceId == req.WorkspaceId && l.Workspace.OwnerUserId == userId)
+            .Select(l => new LinkResponse(
+                l.Id,
+                l.WorkspaceId,
+                l.ProjectId,
+                l.DomainId,
+                l.Slug,
+                l.DestinationUrl,
+                l.Title,
+                l.Status.ToString(),
+                l.ExpiresAt,
+                l.PasswordHash != null,
+                l.CreatedAt,
+                l.UpdatedAt
+            ))
+            .FirstOrDefaultAsync(ct);
+
+        if (link is null)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("Link not found"), 404, cancellation: ct);
+            return;
+        }
+
+        await HttpContext.Response.SendAsync(link, 200, cancellation: ct);
+    }
+}

src/api/Features/Links/Endpoints/ListLinksEndpoint.cs

@@ -0,0 +1,74 @@
+using System.Security.Claims;
+using api.Data;
+using api.Features.Auth.Common;
+using api.Features.Links.Common;
+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+
+namespace api.Features.Links.Endpoints;
+
+public class ListLinksRequest
+{
+    public Guid WorkspaceId { get; set; }
+    public Guid? ProjectId { get; set; }
+    public string? Status { get; set; }
+}
+
+public class ListLinksEndpoint(AppDbContext db)
+    : Endpoint<ListLinksRequest, LinkListResponse>
+{
+    public override void Configure()
+    {
+        Get("/workspaces/{WorkspaceId}/links");
+    }
+
+    public override async Task HandleAsync(ListLinksRequest req, CancellationToken ct)
+    {
+        var userId = Guid.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);
+
+        // Verify workspace ownership
+        var workspaceExists = await db.Workspaces
+            .AnyAsync(w => w.Id == req.WorkspaceId && w.OwnerUserId == userId, ct);
+
+        if (!workspaceExists)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("Workspace not found"), 404, cancellation: ct);
+            return;
+        }
+
+        var query = db.ShortLinks
+            .Where(l => l.WorkspaceId == req.WorkspaceId);
+
+        // Filter by project if specified
+        if (req.ProjectId.HasValue)
+        {
+            query = query.Where(l => l.ProjectId == req.ProjectId.Value);
+        }
+
+        // Filter by status if specified
+        if (!string.IsNullOrEmpty(req.Status) && Enum.TryParse<Models.ShortLinkStatus>(req.Status, true, out var status))
+        {
+            query = query.Where(l => l.Status == status);
+        }
+
+        var links = await query
+            .OrderByDescending(l => l.CreatedAt)
+            .Select(l => new LinkResponse(
+                l.Id,
+                l.WorkspaceId,
+                l.ProjectId,
+                l.DomainId,
+                l.Slug,
+                l.DestinationUrl,
+                l.Title,
+                l.Status.ToString(),
+                l.ExpiresAt,
+                l.PasswordHash != null,
+                l.CreatedAt,
+                l.UpdatedAt
+            ))
+            .ToListAsync(ct);
+
+        await HttpContext.Response.SendAsync(new LinkListResponse(links), 200, cancellation: ct);
+    }
+}

src/api/Features/Links/Endpoints/UpdateLinkEndpoint.cs

@@ -0,0 +1,149 @@
+using System.Security.Claims;
+using api.Data;
+using api.Features.Auth.Common;
+using api.Features.Links.Common;
+using api.Models;
+using FastEndpoints;
+using FluentValidation;
+using Microsoft.EntityFrameworkCore;
+
+namespace api.Features.Links.Endpoints;
+
+public class UpdateLinkRequest
+{
+    public Guid WorkspaceId { get; set; }
+    public Guid Id { get; set; }
+    public string? DestinationUrl { get; set; }
+    public string? Title { get; set; }
+    public string? Status { get; set; }
+    public DateTime? ExpiresAt { get; set; }
+    public string? Password { get; set; }
+    public bool? RemovePassword { get; set; }
+    public Guid? ProjectId { get; set; }
+    public bool? RemoveProject { get; set; }
+}
+
+public class UpdateLinkValidator : Validator<UpdateLinkRequest>
+{
+    public UpdateLinkValidator()
+    {
+        RuleFor(x => x.DestinationUrl)
+            .MaximumLength(2048).WithMessage("Destination URL must not exceed 2048 characters")
+            .Must(BeAValidUrl).WithMessage("Destination URL must be a valid URL")
+            .When(x => !string.IsNullOrEmpty(x.DestinationUrl));
+
+        RuleFor(x => x.Title)
+            .MaximumLength(255).WithMessage("Title must not exceed 255 characters");
+
+        RuleFor(x => x.Status)
+            .Must(s => s == null || Enum.TryParse<ShortLinkStatus>(s, true, out _))
+            .WithMessage("Status must be 'Active' or 'Disabled'");
+
+        RuleFor(x => x.Password)
+            .MinimumLength(4).WithMessage("Password must be at least 4 characters")
+            .When(x => !string.IsNullOrEmpty(x.Password));
+    }
+
+    private static bool BeAValidUrl(string? url)
+    {
+        if (string.IsNullOrEmpty(url)) return true;
+        return Uri.TryCreate(url, UriKind.Absolute, out var uri)
+               && (uri.Scheme == Uri.UriSchemeHttp || uri.Scheme == Uri.UriSchemeHttps);
+    }
+}
+
+public class UpdateLinkEndpoint(AppDbContext db)
+    : Endpoint<UpdateLinkRequest, LinkResponse>
+{
+    public override void Configure()
+    {
+        Put("/workspaces/{WorkspaceId}/links/{Id}");
+    }
+
+    public override async Task HandleAsync(UpdateLinkRequest req, CancellationToken ct)
+    {
+        var userId = Guid.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);
+
+        var link = await db.ShortLinks
+            .Include(l => l.Workspace)
+            .FirstOrDefaultAsync(l => l.Id == req.Id && l.WorkspaceId == req.WorkspaceId && l.Workspace.OwnerUserId == userId, ct);
+
+        if (link is null)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("Link not found"), 404, cancellation: ct);
+            return;
+        }
+
+        // Verify project belongs to workspace if specified
+        if (req.ProjectId.HasValue)
+        {
+            var projectExists = await db.Projects
+                .AnyAsync(p => p.Id == req.ProjectId.Value && p.WorkspaceId == req.WorkspaceId, ct);
+
+            if (!projectExists)
+            {
+                await HttpContext.Response.SendAsync(new MessageResponse("Project not found"), 404, cancellation: ct);
+                return;
+            }
+        }
+
+        // Update fields
+        if (!string.IsNullOrEmpty(req.DestinationUrl))
+        {
+            link.DestinationUrl = req.DestinationUrl;
+        }
+
+        if (req.Title != null)
+        {
+            link.Title = req.Title;
+        }
+
+        if (!string.IsNullOrEmpty(req.Status) && Enum.TryParse<ShortLinkStatus>(req.Status, true, out var status))
+        {
+            link.Status = status;
+        }
+
+        if (req.ExpiresAt.HasValue)
+        {
+            link.ExpiresAt = req.ExpiresAt.Value;
+        }
+
+        if (!string.IsNullOrEmpty(req.Password))
+        {
+            link.PasswordHash = BCrypt.Net.BCrypt.HashPassword(req.Password);
+        }
+        else if (req.RemovePassword == true)
+        {
+            link.PasswordHash = null;
+        }
+
+        if (req.ProjectId.HasValue)
+        {
+            link.ProjectId = req.ProjectId.Value;
+        }
+        else if (req.RemoveProject == true)
+        {
+            link.ProjectId = null;
+        }
+
+        link.UpdatedAt = DateTime.UtcNow;
+        await db.SaveChangesAsync(ct);
+
+        var response = new LinkResponse(
+            link.Id,
+            link.WorkspaceId,
+            link.ProjectId,
+            link.DomainId,
+            link.Slug,
+            link.DestinationUrl,
+            link.Title,
+            link.Status.ToString(),
+            link.ExpiresAt,
+            link.PasswordHash != null,
+            link.CreatedAt,
+            link.UpdatedAt
+        );
+
+        await HttpContext.Response.SendAsync(response, 200, cancellation: ct);
+    }
+}

src/api/Features/Projects/Endpoints/CreateProjectEndpoint.cs

@@ -65,8 +65,6 @@ public class CreateProjectEndpoint(AppDbContext db)
             project.CreatedAt
         );
 
-        await Send.CreatedAtAsync(response, cancellation: ct);
-        
         await HttpContext.Response.SendAsync(response, 201, cancellation: ct);
     }
 }

src/api/Features/QRCodes/Common/QRCodeModels.cs

@@ -0,0 +1,53 @@
+using System.Text.Json.Serialization;
+
+namespace api.Features.QRCodes.Common;
+
+/// <summary>
+/// QR code style configuration stored as JSON
+/// </summary>
+public class QRCodeStyle
+{
+    /// <summary>Foreground color in hex format (e.g., "#000000")</summary>
+    public string ForegroundColor { get; set; } = "#000000";
+
+    /// <summary>Background color in hex format (e.g., "#FFFFFF")</summary>
+    public string BackgroundColor { get; set; } = "#FFFFFF";
+
+    /// <summary>Error correction level: L (7%), M (15%), Q (25%), H (30%)</summary>
+    public string ErrorCorrectionLevel { get; set; } = "M";
+
+    /// <summary>Quiet zone (margin) in modules</summary>
+    public int QuietZone { get; set; } = 4;
+
+    /// <summary>Module shape: Square, Circle, Rounded</summary>
+    public string ModuleShape { get; set; } = "Square";
+
+    /// <summary>Eye shape: Square, Circle, Rounded</summary>
+    public string EyeShape { get; set; } = "Square";
+
+    /// <summary>Pixels per module for rendering</summary>
+    public int PixelsPerModule { get; set; } = 20;
+}
+
+public record QRCodeResponse(
+    Guid Id,
+    Guid WorkspaceId,
+    Guid? ProjectId,
+    Guid? ShortLinkId,
+    string? ShortLinkSlug,
+    QRCodeStyle Style,
+    Guid? LogoAssetId,
+    DateTime CreatedAt,
+    DateTime UpdatedAt
+);
+
+public record QRCodeListResponse(
+    IEnumerable<QRCodeResponse> QRCodes
+);
+
+public record QRCodePreviewResponse(
+    string DataUrl,
+    string Format,
+    int Width,
+    int Height
+);

src/api/Features/QRCodes/Endpoints/CreateQRCodeEndpoint.cs

@@ -0,0 +1,114 @@
+using System.Security.Claims;
+using System.Text.Json;
+using api.Data;
+using api.Features.Auth.Common;
+using api.Features.QRCodes.Common;
+using api.Models;
+using FastEndpoints;
+using FluentValidation;
+using Microsoft.EntityFrameworkCore;
+
+namespace api.Features.QRCodes.Endpoints;
+
+public class CreateQRCodeRequest
+{
+    public Guid WorkspaceId { get; set; }
+    public Guid? ProjectId { get; set; }
+    public Guid? ShortLinkId { get; set; }
+    public QRCodeStyle? Style { get; set; }
+}
+
+public class CreateQRCodeValidator : Validator<CreateQRCodeRequest>
+{
+    public CreateQRCodeValidator()
+    {
+        RuleFor(x => x.ShortLinkId)
+            .NotEmpty().WithMessage("ShortLinkId is required");
+    }
+}
+
+public class CreateQRCodeEndpoint(AppDbContext db)
+    : Endpoint<CreateQRCodeRequest, QRCodeResponse>
+{
+    public override void Configure()
+    {
+        Post("/workspaces/{WorkspaceId}/qrcodes");
+    }
+
+    public override async Task HandleAsync(CreateQRCodeRequest req, CancellationToken ct)
+    {
+        var userId = Guid.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);
+
+        // Verify workspace ownership
+        var workspaceExists = await db.Workspaces
+            .AnyAsync(w => w.Id == req.WorkspaceId && w.OwnerUserId == userId, ct);
+
+        if (!workspaceExists)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("Workspace not found"), 404, cancellation: ct);
+            return;
+        }
+
+        // Verify short link belongs to workspace
+        string? linkSlug = null;
+        if (req.ShortLinkId.HasValue)
+        {
+            var link = await db.ShortLinks
+                .Where(l => l.Id == req.ShortLinkId.Value && l.WorkspaceId == req.WorkspaceId)
+                .Select(l => new { l.Slug })
+                .FirstOrDefaultAsync(ct);
+
+            if (link is null)
+            {
+                await HttpContext.Response.SendAsync(new MessageResponse("Short link not found"), 404, cancellation: ct);
+                return;
+            }
+            linkSlug = link.Slug;
+        }
+
+        // Verify project belongs to workspace if specified
+        if (req.ProjectId.HasValue)
+        {
+            var projectExists = await db.Projects
+                .AnyAsync(p => p.Id == req.ProjectId.Value && p.WorkspaceId == req.WorkspaceId, ct);
+
+            if (!projectExists)
+            {
+                await HttpContext.Response.SendAsync(new MessageResponse("Project not found"), 404, cancellation: ct);
+                return;
+            }
+        }
+
+        var style = req.Style ?? new QRCodeStyle();
+        var now = DateTime.UtcNow;
+
+        var qrCode = new QRCodeDesign
+        {
+            Id = Guid.NewGuid(),
+            WorkspaceId = req.WorkspaceId,
+            ProjectId = req.ProjectId,
+            ShortLinkId = req.ShortLinkId,
+            StyleJson = JsonSerializer.Serialize(style),
+            LogoAssetId = null,
+            CreatedAt = now,
+            UpdatedAt = now
+        };
+
+        db.QrCodeDesigns.Add(qrCode);
+        await db.SaveChangesAsync(ct);
+
+        var response = new QRCodeResponse(
+            qrCode.Id,
+            qrCode.WorkspaceId,
+            qrCode.ProjectId,
+            qrCode.ShortLinkId,
+            linkSlug,
+            style,
+            qrCode.LogoAssetId,
+            qrCode.CreatedAt,
+            qrCode.UpdatedAt
+        );
+
+        await HttpContext.Response.SendAsync(response, 201, cancellation: ct);
+    }
+}

src/api/Features/QRCodes/Endpoints/DeleteQRCodeEndpoint.cs

@@ -0,0 +1,42 @@
+using System.Security.Claims;
+using api.Data;
+using api.Features.Auth.Common;
+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+
+namespace api.Features.QRCodes.Endpoints;
+
+public class DeleteQRCodeRequest
+{
+    public Guid WorkspaceId { get; set; }
+    public Guid Id { get; set; }
+}
+
+public class DeleteQRCodeEndpoint(AppDbContext db)
+    : Endpoint<DeleteQRCodeRequest>
+{
+    public override void Configure()
+    {
+        Delete("/workspaces/{WorkspaceId}/qrcodes/{Id}");
+    }
+
+    public override async Task HandleAsync(DeleteQRCodeRequest req, CancellationToken ct)
+    {
+        var userId = Guid.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);
+
+        var qrCode = await db.QrCodeDesigns
+            .Include(q => q.Workspace)
+            .FirstOrDefaultAsync(q => q.Id == req.Id && q.WorkspaceId == req.WorkspaceId && q.Workspace.OwnerUserId == userId, ct);
+
+        if (qrCode is null)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("QR code not found"), 404, cancellation: ct);
+            return;
+        }
+
+        db.QrCodeDesigns.Remove(qrCode);
+        await db.SaveChangesAsync(ct);
+
+        await HttpContext.Response.SendAsync(new MessageResponse("QR code deleted"), 200, cancellation: ct);
+    }
+}

src/api/Features/QRCodes/Endpoints/ExportQRCodeEndpoint.cs

@@ -0,0 +1,74 @@
+using System.Security.Claims;
+using System.Text.Json;
+using api.Data;
+using api.Features.Auth.Common;
+using api.Features.QRCodes.Common;
+using api.Features.QRCodes.Services;
+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+
+namespace api.Features.QRCodes.Endpoints;
+
+public class ExportQRCodeRequest
+{
+    public Guid WorkspaceId { get; set; }
+    public Guid Id { get; set; }
+    public string? Format { get; set; } // png or svg
+    public int? Size { get; set; }
+}
+
+public class ExportQRCodeEndpoint(AppDbContext db, IQRCodeGeneratorService qrGenerator)
+    : Endpoint<ExportQRCodeRequest>
+{
+    public override void Configure()
+    {
+        Get("/workspaces/{WorkspaceId}/qrcodes/{Id}/export");
+    }
+
+    public override async Task HandleAsync(ExportQRCodeRequest req, CancellationToken ct)
+    {
+        var userId = Guid.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);
+
+        var qrCode = await db.QrCodeDesigns
+            .Include(q => q.ShortLink)
+            .Where(q => q.Id == req.Id && q.WorkspaceId == req.WorkspaceId && q.Workspace.OwnerUserId == userId)
+            .FirstOrDefaultAsync(ct);
+
+        if (qrCode is null)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("QR code not found"), 404, cancellation: ct);
+            return;
+        }
+
+        if (qrCode.ShortLink is null)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("QR code has no associated link"), 400, cancellation: ct);
+            return;
+        }
+
+        var style = JsonSerializer.Deserialize<QRCodeStyle>(qrCode.StyleJson) ?? new QRCodeStyle();
+        var format = (req.Format ?? "png").ToLowerInvariant();
+        var size = req.Size ?? 512;
+
+        // Build the short link URL
+        var baseUrl = $"{HttpContext.Request.Scheme}://{HttpContext.Request.Host}";
+        var linkUrl = $"{baseUrl}/{qrCode.ShortLink.Slug}";
+
+        var filename = $"qrcode-{qrCode.ShortLink.Slug}";
+
+        if (format == "svg")
+        {
+            var svg = qrGenerator.GenerateSvg(linkUrl, style, size);
+            HttpContext.Response.ContentType = "image/svg+xml";
+            HttpContext.Response.Headers.ContentDisposition = $"attachment; filename=\"{filename}.svg\"";
+            await HttpContext.Response.WriteAsync(svg, ct);
+        }
+        else
+        {
+            var png = qrGenerator.GeneratePng(linkUrl, style, size);
+            HttpContext.Response.ContentType = "image/png";
+            HttpContext.Response.Headers.ContentDisposition = $"attachment; filename=\"{filename}.png\"";
+            await HttpContext.Response.Body.WriteAsync(png, ct);
+        }
+    }
+}

src/api/Features/QRCodes/Endpoints/GetQRCodeEndpoint.cs

@@ -0,0 +1,56 @@
+using System.Security.Claims;
+using System.Text.Json;
+using api.Data;
+using api.Features.Auth.Common;
+using api.Features.QRCodes.Common;
+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+
+namespace api.Features.QRCodes.Endpoints;
+
+public class GetQRCodeRequest
+{
+    public Guid WorkspaceId { get; set; }
+    public Guid Id { get; set; }
+}
+
+public class GetQRCodeEndpoint(AppDbContext db)
+    : Endpoint<GetQRCodeRequest, QRCodeResponse>
+{
+    public override void Configure()
+    {
+        Get("/workspaces/{WorkspaceId}/qrcodes/{Id}");
+    }
+
+    public override async Task HandleAsync(GetQRCodeRequest req, CancellationToken ct)
+    {
+        var userId = Guid.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);
+
+        var qrCode = await db.QrCodeDesigns
+            .Include(q => q.ShortLink)
+            .Where(q => q.Id == req.Id && q.WorkspaceId == req.WorkspaceId && q.Workspace.OwnerUserId == userId)
+            .FirstOrDefaultAsync(ct);
+
+        if (qrCode is null)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("QR code not found"), 404, cancellation: ct);
+            return;
+        }
+
+        var style = JsonSerializer.Deserialize<QRCodeStyle>(qrCode.StyleJson) ?? new QRCodeStyle();
+
+        var response = new QRCodeResponse(
+            qrCode.Id,
+            qrCode.WorkspaceId,
+            qrCode.ProjectId,
+            qrCode.ShortLinkId,
+            qrCode.ShortLink?.Slug,
+            style,
+            qrCode.LogoAssetId,
+            qrCode.CreatedAt,
+            qrCode.UpdatedAt
+        );
+
+        await HttpContext.Response.SendAsync(response, 200, cancellation: ct);
+    }
+}

src/api/Features/QRCodes/Endpoints/ListQRCodesEndpoint.cs

@@ -0,0 +1,74 @@
+using System.Security.Claims;
+using System.Text.Json;
+using api.Data;
+using api.Features.Auth.Common;
+using api.Features.QRCodes.Common;
+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+
+namespace api.Features.QRCodes.Endpoints;
+
+public class ListQRCodesRequest
+{
+    public Guid WorkspaceId { get; set; }
+    public Guid? ProjectId { get; set; }
+    public Guid? ShortLinkId { get; set; }
+}
+
+public class ListQRCodesEndpoint(AppDbContext db)
+    : Endpoint<ListQRCodesRequest, QRCodeListResponse>
+{
+    public override void Configure()
+    {
+        Get("/workspaces/{WorkspaceId}/qrcodes");
+    }
+
+    public override async Task HandleAsync(ListQRCodesRequest req, CancellationToken ct)
+    {
+        var userId = Guid.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);
+
+        // Verify workspace ownership
+        var workspaceExists = await db.Workspaces
+            .AnyAsync(w => w.Id == req.WorkspaceId && w.OwnerUserId == userId, ct);
+
+        if (!workspaceExists)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("Workspace not found"), 404, cancellation: ct);
+            return;
+        }
+
+        var query = db.QrCodeDesigns
+            .Where(q => q.WorkspaceId == req.WorkspaceId);
+
+        if (req.ProjectId.HasValue)
+        {
+            query = query.Where(q => q.ProjectId == req.ProjectId.Value);
+        }
+
+        if (req.ShortLinkId.HasValue)
+        {
+            query = query.Where(q => q.ShortLinkId == req.ShortLinkId.Value);
+        }
+
+        var qrCodes = await query
+            .Include(q => q.ShortLink)
+            .OrderByDescending(q => q.CreatedAt)
+            .ToListAsync(ct);
+
+        var response = new QRCodeListResponse(
+            qrCodes.Select(q => new QRCodeResponse(
+                q.Id,
+                q.WorkspaceId,
+                q.ProjectId,
+                q.ShortLinkId,
+                q.ShortLink?.Slug,
+                JsonSerializer.Deserialize<QRCodeStyle>(q.StyleJson) ?? new QRCodeStyle(),
+                q.LogoAssetId,
+                q.CreatedAt,
+                q.UpdatedAt
+            ))
+        );
+
+        await HttpContext.Response.SendAsync(response, 200, cancellation: ct);
+    }
+}

src/api/Features/QRCodes/Endpoints/PreviewQRCodeEndpoint.cs

@@ -0,0 +1,67 @@
+using System.Security.Claims;
+using System.Text.Json;
+using api.Data;
+using api.Features.Auth.Common;
+using api.Features.QRCodes.Common;
+using api.Features.QRCodes.Services;
+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+
+namespace api.Features.QRCodes.Endpoints;
+
+public class PreviewQRCodeRequest
+{
+    public Guid WorkspaceId { get; set; }
+    public Guid Id { get; set; }
+    public int? Size { get; set; }
+}
+
+public class PreviewQRCodeEndpoint(AppDbContext db, IQRCodeGeneratorService qrGenerator)
+    : Endpoint<PreviewQRCodeRequest, QRCodePreviewResponse>
+{
+    public override void Configure()
+    {
+        Get("/workspaces/{WorkspaceId}/qrcodes/{Id}/preview");
+    }
+
+    public override async Task HandleAsync(PreviewQRCodeRequest req, CancellationToken ct)
+    {
+        var userId = Guid.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);
+
+        var qrCode = await db.QrCodeDesigns
+            .Include(q => q.ShortLink)
+            .Where(q => q.Id == req.Id && q.WorkspaceId == req.WorkspaceId && q.Workspace.OwnerUserId == userId)
+            .FirstOrDefaultAsync(ct);
+
+        if (qrCode is null)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("QR code not found"), 404, cancellation: ct);
+            return;
+        }
+
+        if (qrCode.ShortLink is null)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("QR code has no associated link"), 400, cancellation: ct);
+            return;
+        }
+
+        var style = JsonSerializer.Deserialize<QRCodeStyle>(qrCode.StyleJson) ?? new QRCodeStyle();
+        var size = req.Size ?? 256;
+
+        // Build the short link URL
+        // TODO: Use actual domain configuration
+        var baseUrl = $"{HttpContext.Request.Scheme}://{HttpContext.Request.Host}";
+        var linkUrl = $"{baseUrl}/{qrCode.ShortLink.Slug}";
+
+        var dataUrl = qrGenerator.GenerateDataUrl(linkUrl, style, size);
+
+        var response = new QRCodePreviewResponse(
+            DataUrl: dataUrl,
+            Format: "png",
+            Width: size,
+            Height: size
+        );
+
+        await HttpContext.Response.SendAsync(response, 200, cancellation: ct);
+    }
+}

src/api/Features/QRCodes/Endpoints/UpdateQRCodeEndpoint.cs

@@ -0,0 +1,85 @@
+using System.Security.Claims;
+using System.Text.Json;
+using api.Data;
+using api.Features.Auth.Common;
+using api.Features.QRCodes.Common;
+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+
+namespace api.Features.QRCodes.Endpoints;
+
+public class UpdateQRCodeRequest
+{
+    public Guid WorkspaceId { get; set; }
+    public Guid Id { get; set; }
+    public Guid? ProjectId { get; set; }
+    public bool? RemoveProject { get; set; }
+    public QRCodeStyle? Style { get; set; }
+}
+
+public class UpdateQRCodeEndpoint(AppDbContext db)
+    : Endpoint<UpdateQRCodeRequest, QRCodeResponse>
+{
+    public override void Configure()
+    {
+        Put("/workspaces/{WorkspaceId}/qrcodes/{Id}");
+    }
+
+    public override async Task HandleAsync(UpdateQRCodeRequest req, CancellationToken ct)
+    {
+        var userId = Guid.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);
+
+        var qrCode = await db.QrCodeDesigns
+            .Include(q => q.Workspace)
+            .Include(q => q.ShortLink)
+            .FirstOrDefaultAsync(q => q.Id == req.Id && q.WorkspaceId == req.WorkspaceId && q.Workspace.OwnerUserId == userId, ct);
+
+        if (qrCode is null)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("QR code not found"), 404, cancellation: ct);
+            return;
+        }
+
+        // Verify project belongs to workspace if specified
+        if (req.ProjectId.HasValue)
+        {
+            var projectExists = await db.Projects
+                .AnyAsync(p => p.Id == req.ProjectId.Value && p.WorkspaceId == req.WorkspaceId, ct);
+
+            if (!projectExists)
+            {
+                await HttpContext.Response.SendAsync(new MessageResponse("Project not found"), 404, cancellation: ct);
+                return;
+            }
+            qrCode.ProjectId = req.ProjectId.Value;
+        }
+        else if (req.RemoveProject == true)
+        {
+            qrCode.ProjectId = null;
+        }
+
+        if (req.Style != null)
+        {
+            qrCode.StyleJson = JsonSerializer.Serialize(req.Style);
+        }
+
+        qrCode.UpdatedAt = DateTime.UtcNow;
+        await db.SaveChangesAsync(ct);
+
+        var style = JsonSerializer.Deserialize<QRCodeStyle>(qrCode.StyleJson) ?? new QRCodeStyle();
+
+        var response = new QRCodeResponse(
+            qrCode.Id,
+            qrCode.WorkspaceId,
+            qrCode.ProjectId,
+            qrCode.ShortLinkId,
+            qrCode.ShortLink?.Slug,
+            style,
+            qrCode.LogoAssetId,
+            qrCode.CreatedAt,
+            qrCode.UpdatedAt
+        );
+
+        await HttpContext.Response.SendAsync(response, 200, cancellation: ct);
+    }
+}

src/api/Features/QRCodes/Services/QRCodeGeneratorService.cs

@@ -0,0 +1,94 @@
+using System.Drawing;
+using api.Features.QRCodes.Common;
+using QRCoder;
+
+namespace api.Features.QRCodes.Services;
+
+public interface IQRCodeGeneratorService
+{
+    byte[] GeneratePng(string content, QRCodeStyle style, int size = 512);
+    string GenerateSvg(string content, QRCodeStyle style, int size = 512);
+    string GenerateDataUrl(string content, QRCodeStyle style, int size = 256);
+}
+
+public class QRCodeGeneratorService : IQRCodeGeneratorService
+{
+    public byte[] GeneratePng(string content, QRCodeStyle style, int size = 512)
+    {
+        using var qrGenerator = new QRCodeGenerator();
+        var eccLevel = ParseEccLevel(style.ErrorCorrectionLevel);
+        using var qrCodeData = qrGenerator.CreateQrCode(content, eccLevel);
+
+        using var qrCode = new PngByteQRCode(qrCodeData);
+
+        var foreground = ParseColor(style.ForegroundColor);
+        var background = ParseColor(style.BackgroundColor);
+
+        // Calculate pixels per module based on desired size
+        var moduleCount = qrCodeData.ModuleMatrix.Count;
+        var pixelsPerModule = Math.Max(1, size / moduleCount);
+
+        return qrCode.GetGraphic(pixelsPerModule, foreground, background, drawQuietZones: style.QuietZone > 0);
+    }
+
+    public string GenerateSvg(string content, QRCodeStyle style, int size = 512)
+    {
+        using var qrGenerator = new QRCodeGenerator();
+        var eccLevel = ParseEccLevel(style.ErrorCorrectionLevel);
+        using var qrCodeData = qrGenerator.CreateQrCode(content, eccLevel);
+
+        using var qrCode = new SvgQRCode(qrCodeData);
+
+        var foreground = style.ForegroundColor;
+        var background = style.BackgroundColor;
+
+        // Calculate pixels per module
+        var moduleCount = qrCodeData.ModuleMatrix.Count;
+        var pixelsPerModule = Math.Max(1, size / moduleCount);
+
+        return qrCode.GetGraphic(
+            pixelsPerModule,
+            foreground,
+            background,
+            drawQuietZones: style.QuietZone > 0
+        );
+    }
+
+    public string GenerateDataUrl(string content, QRCodeStyle style, int size = 256)
+    {
+        var pngBytes = GeneratePng(content, style, size);
+        var base64 = Convert.ToBase64String(pngBytes);
+        return $"data:image/png;base64,{base64}";
+    }
+
+    private static QRCodeGenerator.ECCLevel ParseEccLevel(string level)
+    {
+        return level.ToUpperInvariant() switch
+        {
+            "L" => QRCodeGenerator.ECCLevel.L,
+            "M" => QRCodeGenerator.ECCLevel.M,
+            "Q" => QRCodeGenerator.ECCLevel.Q,
+            "H" => QRCodeGenerator.ECCLevel.H,
+            _ => QRCodeGenerator.ECCLevel.M
+        };
+    }
+
+    private static byte[] ParseColor(string hexColor)
+    {
+        // Remove # if present
+        var hex = hexColor.TrimStart('#');
+
+        if (hex.Length == 6)
+        {
+            return
+            [
+                Convert.ToByte(hex[..2], 16),
+                Convert.ToByte(hex[2..4], 16),
+                Convert.ToByte(hex[4..6], 16)
+            ];
+        }
+
+        // Default to black
+        return [0, 0, 0];
+    }
+}

src/api/Features/Redirect/Endpoints/PasswordRedirectEndpoint.cs

@@ -0,0 +1,104 @@
+using api.Data;
+using api.Features.Auth.Common;
+using api.Features.Events.Services;
+using api.Models;
+using FastEndpoints;
+using FluentValidation;
+using Microsoft.EntityFrameworkCore;
+
+namespace api.Features.Redirect.Endpoints;
+
+public class PasswordRedirectRequest
+{
+    public string Slug { get; set; } = string.Empty;
+    public string Password { get; set; } = string.Empty;
+}
+
+public class PasswordRedirectResponse
+{
+    public string Location { get; set; } = string.Empty;
+}
+
+public class PasswordRedirectValidator : Validator<PasswordRedirectRequest>
+{
+    public PasswordRedirectValidator()
+    {
+        RuleFor(x => x.Password)
+            .NotEmpty().WithMessage("Password is required");
+    }
+}
+
+public class PasswordRedirectEndpoint(AppDbContext db, IEventTrackingService eventTracking)
+    : Endpoint<PasswordRedirectRequest, PasswordRedirectResponse>
+{
+    public override void Configure()
+    {
+        Post("/{Slug}");
+        AllowAnonymous();
+    }
+
+    public override async Task HandleAsync(PasswordRedirectRequest req, CancellationToken ct)
+    {
+        // Look up the short link by slug
+        var link = await db.ShortLinks
+            .Where(l => l.Slug == req.Slug && l.DomainId == null)
+            .Select(l => new
+            {
+                l.Id,
+                l.DestinationUrl,
+                l.Status,
+                l.ExpiresAt,
+                l.PasswordHash,
+                l.WorkspaceId
+            })
+            .FirstOrDefaultAsync(ct);
+
+        // Link not found
+        if (link is null)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("Link not found"), 404, cancellation: ct);
+            return;
+        }
+
+        // Link is disabled
+        if (link.Status == ShortLinkStatus.Disabled)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("Link not found"), 404, cancellation: ct);
+            return;
+        }
+
+        // Link has expired
+        if (link.ExpiresAt.HasValue && link.ExpiresAt.Value < DateTime.UtcNow)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("Link has expired"), 410, cancellation: ct);
+            return;
+        }
+
+        // Link is not password protected - just redirect
+        if (string.IsNullOrEmpty(link.PasswordHash))
+        {
+            // Track click event
+            await eventTracking.TrackClickAsync(link.WorkspaceId, link.Id, HttpContext);
+
+            HttpContext.Response.StatusCode = StatusCodes.Status302Found;
+            HttpContext.Response.Headers.Location = link.DestinationUrl;
+            await HttpContext.Response.StartAsync(ct);
+            return;
+        }
+
+        // Verify password
+        if (!BCrypt.Net.BCrypt.Verify(req.Password, link.PasswordHash))
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("Invalid password"), 401, cancellation: ct);
+            return;
+        }
+
+        // Track click event
+        await eventTracking.TrackClickAsync(link.WorkspaceId, link.Id, HttpContext);
+
+        // Password correct - redirect
+        HttpContext.Response.StatusCode = StatusCodes.Status302Found;
+        HttpContext.Response.Headers.Location = link.DestinationUrl;
+        await HttpContext.Response.StartAsync(ct);
+    }
+}

src/api/Features/Redirect/Endpoints/RedirectEndpoint.cs

@@ -0,0 +1,84 @@
+using api.Data;
+using api.Features.Auth.Common;
+using api.Features.Events.Services;
+using api.Models;
+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+
+namespace api.Features.Redirect.Endpoints;
+
+public class RedirectRequest
+{
+    public string Slug { get; set; } = string.Empty;
+}
+
+public class RedirectResponse
+{
+    public string Location { get; set; } = string.Empty;
+}
+
+public class RedirectEndpoint(AppDbContext db, IEventTrackingService eventTracking)
+    : Endpoint<RedirectRequest, RedirectResponse>
+{
+    public override void Configure()
+    {
+        Get("/{Slug}");
+        AllowAnonymous();
+    }
+
+    public override async Task HandleAsync(RedirectRequest req, CancellationToken ct)
+    {
+        // Look up the short link by slug (default domain = null for now)
+        var link = await db.ShortLinks
+            .Where(l => l.Slug == req.Slug && l.DomainId == null)
+            .Select(l => new
+            {
+                l.Id,
+                l.DestinationUrl,
+                l.Status,
+                l.ExpiresAt,
+                l.PasswordHash,
+                l.WorkspaceId
+            })
+            .FirstOrDefaultAsync(ct);
+
+        // Link not found
+        if (link is null)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("Link not found"), 404, cancellation: ct);
+            return;
+        }
+
+        // Link is disabled
+        if (link.Status == ShortLinkStatus.Disabled)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("Link not found"), 404, cancellation: ct);
+            return;
+        }
+
+        // Link has expired
+        if (link.ExpiresAt.HasValue && link.ExpiresAt.Value < DateTime.UtcNow)
+        {
+            await HttpContext.Response.SendAsync(new MessageResponse("Link has expired"), 410, cancellation: ct);
+            return;
+        }
+
+        // Link is password protected
+        if (!string.IsNullOrEmpty(link.PasswordHash))
+        {
+            // Return 401 with a hint that password is required
+            // Frontend/client would need to POST the password to verify
+            HttpContext.Response.Headers["X-Password-Required"] = "true";
+            await HttpContext.Response.SendAsync(new MessageResponse("Password required"), 401, cancellation: ct);
+            return;
+        }
+
+        // Track click event asynchronously (fire and forget)
+        await eventTracking.TrackClickAsync(link.WorkspaceId, link.Id, HttpContext);
+
+        // Redirect to destination (302 Found)
+        HttpContext.Response.StatusCode = StatusCodes.Status302Found;
+        HttpContext.Response.Headers.Location = link.DestinationUrl;
+        await HttpContext.Response.StartAsync(ct);
+    }
+}

src/api/Program.cs

@@ -1,6 +1,8 @@
 using System.Text;
 using api.Data;
 using api.Features.Auth.Settings;
+using api.Features.Events.Services;
+using api.Features.QRCodes.Services;
 using FastEndpoints;
 using Microsoft.AspNetCore.Authentication.JwtBearer;
 using Microsoft.EntityFrameworkCore;
@@ -12,6 +14,10 @@ var builder = WebApplication.CreateBuilder(args);
 builder.Services.AddDbContext<AppDbContext>(options =>
     options.UseNpgsql(builder.Configuration.GetConnectionString("PostgresConnection")));
 
+// Register application services
+builder.Services.AddSingleton<IEventTrackingService, EventTrackingService>();
+builder.Services.AddSingleton<IQRCodeGeneratorService, QRCodeGeneratorService>();
+
 // Configure JWT settings
 builder.Services.Configure<JwtSettings>(builder.Configuration.GetSection("Jwt"));
 var jwtSettings = builder.Configuration.GetSection("Jwt").Get<JwtSettings>()!;

src/api/api.csproj

@@ -20,6 +20,7 @@
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
     <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="10.0.0" />
+    <PackageReference Include="QRCoder" Version="1.7.0" />
     <PackageReference Include="Swashbuckle.AspNetCore.SwaggerUI" Version="10.1.0" />
   </ItemGroup>