.vscode/launch.json

@@ -13,7 +13,7 @@
         "pipeCwd": "${workspaceFolder}",
         "quoteArgs": false
       },
-      "preLaunchTask": "docker-compose up (backend only)",
+      "preLaunchTask": "docker-compose up (debug backend only)",
       "sourceFileMap": {
         "/src/src/ParagonPlayground.Api": "${workspaceFolder}/src/ParagonPlayground/backend/src/ParagonPlayground.Api",
         "/src/src/ParagonPlayground.Domain": "${workspaceFolder}/src/ParagonPlayground/backend/src/ParagonPlayground.Domain",
@@ -39,8 +39,7 @@
     },
     {
       "name": "Attach to All",
-      "type": "compound",
+      "preLaunchTask": "docker-compose up (debug)",
-      "preLaunchTask": "docker-compose up",
       "configurations": ["Attach to Backend", "Attach to Frontend"]
     }
   ],

.vscode/settings.json

@@ -1,3 +1,6 @@
 {
-  "FSharp.suggestGitignore": false
+  "FSharp.suggestGitignore": false,
+  "cSpell.words": [
+    "useparagon"
+  ]
 }

.vscode/tasks.json

@@ -45,6 +45,28 @@
       "group": "none",
       "detail": "Restart all services"
     },
+    {
+      "label": "docker-compose up (debug)",
+      "type": "shell",
+      "command": "docker compose -f docker-compose.debug.yml up -d --build",
+      "options": {
+        "cwd": "${workspaceFolder}/src/ParagonPlayground"
+      },
+      "problemMatcher": [],
+      "group": "none",
+      "detail": "Build and start all services using the debug stage (compiled binary, debugger-ready)"
+    },
+    {
+      "label": "docker-compose up (debug backend only)",
+      "type": "shell",
+      "command": "docker compose -f docker-compose.debug.yml up -d --build mongodb backend nginx",
+      "options": {
+        "cwd": "${workspaceFolder}/src/ParagonPlayground"
+      },
+      "problemMatcher": [],
+      "group": "none",
+      "detail": "Backend only in debug mode (no frontend container)"
+    },
     {
       "label": "build backend",
       "type": "shell",

src/ParagonPlayground/backend/Dockerfile

@@ -1,22 +1,8 @@
-FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
+# === Development stage ===
+# Hot reload via dotnet watch with source volume mount
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS development
 WORKDIR /src
-
-COPY ParagonPlayground.slnx ./
-COPY Directory.Build.props ./
-COPY src/Directory.Build.props src/
-COPY src/Directory.Packages.props src/
-COPY src/ParagonPlayground.Domain/ParagonPlayground.Domain.csproj src/ParagonPlayground.Domain/
-COPY src/ParagonPlayground.Infrastructure/ParagonPlayground.Infrastructure.csproj src/ParagonPlayground.Infrastructure/
-COPY src/ParagonPlayground.Api/ParagonPlayground.Api.csproj src/ParagonPlayground.Api/
-RUN dotnet restore src/ParagonPlayground.Api/ParagonPlayground.Api.csproj
-
 COPY . .
-RUN dotnet publish src/ParagonPlayground.Api/ParagonPlayground.Api.csproj -c Debug -o /app
-
-FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS runtime
-WORKDIR /app
-EXPOSE 8080
-COPY --from=build /app .
 
 RUN apt-get update && \
     apt-get install -y unzip curl && \
@@ -24,4 +10,30 @@ RUN apt-get update && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*
 
+EXPOSE 8080
+ENV ASPNETCORE_URLS=http://+:8080
+ENV ASPNETCORE_ENVIRONMENT=Development
+CMD ["dotnet", "watch", "run", "--project", "src/ParagonPlayground.Api/ParagonPlayground.Api.csproj", "--no-launch-profile"]
+
+# === Build stage ===
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
+WORKDIR /src
+COPY . .
+RUN dotnet publish src/ParagonPlayground.Api/ParagonPlayground.Api.csproj -c Debug -o /app
+
+# === Debug stage ===
+# Compiled binary with vsdbg for debugger attachment
+FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS debug
+WORKDIR /app
+EXPOSE 8080
+
+RUN apt-get update && \
+    apt-get install -y unzip curl && \
+    curl -sSL https://aka.ms/getvsdbgsh | /bin/sh /dev/stdin -v latest -l /vsdbg && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+COPY --from=build /app .
+ENV ASPNETCORE_URLS=http://+:8080
+ENV ASPNETCORE_ENVIRONMENT=Development
 ENTRYPOINT ["dotnet", "ParagonPlayground.Api.dll"]

src/ParagonPlayground/backend/src/Directory.Packages.props

@@ -13,6 +13,8 @@
     <PackageVersion Include="BCrypt.Net-Next" Version="4.2.0" />
     <PackageVersion Include="Microsoft.AspNetCore.Http.Abstractions" Version="2.3.11" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="10.0.10" />
+    <PackageVersion Include="System.IdentityModel.Tokens.Jwt" Version="8.4.0" />
+    <PackageVersion Include="Microsoft.Extensions.Http.Resilience" Version="10.1.0" />
   </ItemGroup>
 
 </Project>

src/ParagonPlayground/backend/src/ParagonPlayground.Api/Auth/AuthPolicies.cs

@@ -0,0 +1,36 @@
+namespace ParagonPlayground.Api.Auth;
+
+internal static class PolicyNames
+{
+  internal const string AdminOnly = "AdminOnly";
+}
+
+internal static class RoleNames
+{
+  internal const string Admin = "admin";
+}
+
+internal static class SessionAuthDefaults
+{
+  internal const string Scheme = "Session";
+}
+
+internal static class ClaimNames
+{
+  internal const string OrganizationId = "OrganizationId";
+
+  internal const string OrganizationName = "OrganizationName";
+
+  internal const string OrganizationSlug = "OrganizationSlug";
+}
+
+internal static class EndpointAuthorizationExtensions
+{
+  internal static RouteHandlerBuilder RequireAdmin(this RouteHandlerBuilder builder)
+  {
+    ArgumentNullException.ThrowIfNull(builder);
+
+    _ = builder.RequireAuthorization(PolicyNames.AdminOnly);
+    return builder;
+  }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Api/Auth/SessionAuthenticationHandler.cs

@@ -0,0 +1,80 @@
+using System.Security.Claims;
+using System.Text.Encodings.Web;
+
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.Extensions.Options;
+
+using ParagonPlayground.Api.Context;
+using ParagonPlayground.Api.Infrastructure;
+using ParagonPlayground.Infrastructure.Data;
+using ParagonPlayground.Infrastructure.Services;
+
+namespace ParagonPlayground.Api.Auth;
+
+internal sealed class SessionAuthenticationHandler(
+  IOptionsMonitor<AuthenticationSchemeOptions> options,
+  ILoggerFactory logger,
+  UrlEncoder encoder,
+  CookieService cookieService,
+  SessionRepository sessionRepository,
+  UserRepository userRepository,
+  OrganizationRepository organizationRepository
+) : AuthenticationHandler<AuthenticationSchemeOptions>(options, logger, encoder)
+{
+  private readonly CookieService _cookieService = cookieService;
+  private readonly SessionRepository _sessionRepository = sessionRepository;
+  private readonly UserRepository _userRepository = userRepository;
+  private readonly OrganizationRepository _organizationRepository = organizationRepository;
+
+  protected override async Task<AuthenticateResult> HandleAuthenticateAsync()
+  {
+    var sessionToken = _cookieService.GetSessionToken(Context);
+
+    if (string.IsNullOrEmpty(sessionToken))
+    {
+      return AuthenticateResult.NoResult();
+    }
+
+    var tokenHash = TokenHelper.HashToken(sessionToken);
+    var session = await _sessionRepository.GetByTokenHashAsync(tokenHash, Context.RequestAborted);
+
+    if (session is null || session.ExpiresAt <= DateTime.UtcNow)
+    {
+      return AuthenticateResult.Fail("Session token is invalid or expired.");
+    }
+
+    var user = await _userRepository.GetByIdAsync(session.UserId, Context.RequestAborted);
+
+    if (user is null)
+    {
+      return AuthenticateResult.Fail("The user associated with this session no longer exists.");
+    }
+
+    var organization = await _organizationRepository.GetByIdAsync(user.OrganizationId, Context.RequestAborted);
+
+    if (organization is null)
+    {
+      return AuthenticateResult.Fail("The organization associated with this session no longer exists.");
+    }
+
+    Context.SetSession(session);
+    Context.SetSessionToken(sessionToken);
+    Context.SetUser(user);
+    Context.SetOrganization(organization);
+
+    var identity = new ClaimsIdentity(
+      [
+        new Claim(ClaimTypes.NameIdentifier, user.Id),
+        new Claim(ClaimTypes.Name, user.DisplayName),
+        new Claim(ClaimTypes.Email, user.Email),
+        new Claim(ClaimTypes.Role, user.Role),
+        new Claim(ClaimNames.OrganizationId, organization.Id),
+        new Claim(ClaimNames.OrganizationName, organization.Name),
+        new Claim(ClaimNames.OrganizationSlug, organization.Slug),
+      ],
+      Scheme.Name
+    );
+
+    return AuthenticateResult.Success(new AuthenticationTicket(new ClaimsPrincipal(identity), Scheme.Name));
+  }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Api/Context/HttpContextExtensions.cs

@@ -29,9 +29,16 @@ internal static class HttpContextExtensions
     context.Items[ContextKeys.User] = user;
   }
 
-  internal static User? GetUser(this HttpContext context)
+  internal static User GetUser(this HttpContext context)
   {
-    return context.Items[ContextKeys.User] as User;
+    return context.Items[ContextKeys.User] as User
+      ?? throw new NotAuthenticatedException("The authenticated user is not available for this request.");
+  }
+
+  internal static bool TryGetUser(this HttpContext context, out User? user)
+  {
+    user = context.Items[ContextKeys.User] as User;
+    return user is not null;
   }
 
   internal static void SetOrganization(this HttpContext context, Organization? org)
@@ -39,8 +46,15 @@ internal static class HttpContextExtensions
     context.Items[ContextKeys.Organization] = org;
   }
 
-  internal static Organization? GetOrganization(this HttpContext context)
+  internal static Organization GetOrganization(this HttpContext context)
   {
-    return context.Items[ContextKeys.Organization] as Organization;
+    return context.Items[ContextKeys.Organization] as Organization
+      ?? throw new NotAuthenticatedException("The authenticated organization is not available for this request.");
+  }
+
+  internal static bool TryGetOrganization(this HttpContext context, out Organization? organization)
+  {
+    organization = context.Items[ContextKeys.Organization] as Organization;
+    return organization is not null;
   }
 }

src/ParagonPlayground/backend/src/ParagonPlayground.Api/Context/NotAuthenticatedException.cs

@@ -0,0 +1,16 @@
+namespace ParagonPlayground.Api.Context;
+
+internal sealed class NotAuthenticatedException : Exception
+{
+  public NotAuthenticatedException()
+  {
+  }
+
+  public NotAuthenticatedException(string message) : base(message)
+  {
+  }
+
+  public NotAuthenticatedException(string message, Exception innerException) : base(message, innerException)
+  {
+  }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Api/Endpoints/AuthEndpoints.cs

@@ -16,8 +16,8 @@ internal static class AuthEndpoints
   internal static RouteGroupBuilder MapAuthEndpoints(this RouteGroupBuilder group)
   {
     _ = group.MapPost("/login", LoginAsync);
-    _ = group.MapPost("/logout", LogoutAsync);
+    _ = group.MapPost("/logout", LogoutAsync).RequireAuthorization();
-    _ = group.MapGet("/me", Me);
+    _ = group.MapGet("/me", Me).RequireAuthorization();
     return group;
   }
 
@@ -38,7 +38,7 @@ internal static class AuthEndpoints
 
     if (user is null || passwordService.Verify(request.Password, user.PasswordHash) is false)
     {
-      return Results.Json(new { error = "Invalid email or password" }, statusCode: StatusCodes.Status401Unauthorized);
+      return Results.Problem(detail: "Invalid email or password", statusCode: StatusCodes.Status401Unauthorized);
     }
 
     var org = await orgRepo.GetByIdAsync(user.OrganizationId, ct);
@@ -65,6 +65,7 @@ internal static class AuthEndpoints
       Id = user.Id,
       Email = user.Email,
       DisplayName = user.DisplayName,
+      Role = user.Role,
       OrganizationId = org?.Id ?? string.Empty,
       OrganizationName = org?.Name ?? string.Empty,
       OrganizationSlug = org?.Slug ?? string.Empty,
@@ -88,18 +89,13 @@ internal static class AuthEndpoints
     cookieService.ClearSessionCookie(context);
     cookieService.ClearXsrfCookie(context);
 
-    return Results.Ok(new { message = "Logged out" });
+    return Results.NoContent();
   }
 
   private static IResult Me(HttpContext context)
   {
     var user = context.GetUser();
 
-    if (user is null)
-    {
-      return Results.Json(new { error = "Not authenticated" }, statusCode: StatusCodes.Status401Unauthorized);
-    }
-
     var org = context.GetOrganization();
 
     return Results.Ok(new UserResponse
@@ -107,6 +103,7 @@ internal static class AuthEndpoints
       Id = user.Id,
       Email = user.Email,
       DisplayName = user.DisplayName,
+      Role = user.Role,
       OrganizationId = org?.Id ?? string.Empty,
       OrganizationName = org?.Name ?? string.Empty,
       OrganizationSlug = org?.Slug ?? string.Empty,

src/ParagonPlayground/backend/src/ParagonPlayground.Api/Endpoints/IntegrationEndpoints.cs

@@ -0,0 +1,214 @@
+using MongoDB.Bson;
+
+using ParagonPlayground.Api.Auth;
+using ParagonPlayground.Api.Context;
+using ParagonPlayground.Api.Services;
+using ParagonPlayground.Domain.DTOs;
+using ParagonPlayground.Domain.Entities;
+using ParagonPlayground.Infrastructure.Data;
+
+namespace ParagonPlayground.Api.Endpoints;
+
+internal static class IntegrationEndpoints
+{
+  internal static RouteGroupBuilder MapIntegrationEndpoints(this RouteGroupBuilder group)
+  {
+    _ = group.MapGet("/config", GetConfig);
+    _ = group.MapPut("/config", PutConfig).RequireAdmin();
+    _ = group.MapGet("/credentials", GetCredentials);
+    _ = group.MapGet("/credentials/org", GetOrgCredentials).RequireAdmin();
+    _ = group.MapPost("/credentials", PostCredential);
+    _ = group.MapDelete("/credentials/org", PurgeOrgCredentials).RequireAdmin();
+    _ = group.MapDelete("/credentials/{credentialId}", DeleteCredential);
+    _ = group.RequireAuthorization();
+    return group;
+  }
+
+  private static async Task<IResult> GetConfig(
+    HttpContext context,
+    OrganizationIntegrationRepository repo,
+    CancellationToken ct
+  )
+  {
+    var org = context.GetOrganization();
+
+    var config = await repo.GetByOrganizationIdAsync(org.Id, ct);
+
+    if (config is null)
+    {
+      return Results.Problem(detail: "Integration configuration not found", statusCode: StatusCodes.Status404NotFound);
+    }
+
+    return Results.Ok(new IntegrationConfigResponse
+    {
+      Id = config.Id,
+      OrganizationId = config.OrganizationId,
+      ConnectionMode = config.ConnectionMode,
+      SharePointSiteUrl = config.SharePointSiteUrl,
+      SharePointSiteId = config.SharePointSiteId,
+      SharePointFolderPath = config.SharePointFolderPath,
+      UpdatedAt = config.UpdatedAt,
+    });
+  }
+
+  private static async Task<IResult> PutConfig(
+    IntegrationConfigRequest request,
+    HttpContext context,
+    OrganizationIntegrationRepository repo,
+    UserCredentialRepository credRepo,
+    ParagonService paragon,
+    CancellationToken ct
+  )
+  {
+    var user = context.GetUser();
+    var org = context.GetOrganization();
+
+    var config = await repo.GetByOrganizationIdAsync(org.Id, ct);
+
+    config ??= new OrganizationIntegration
+    {
+      Id = ObjectId.GenerateNewId().ToString(),
+      OrganizationId = org.Id,
+    };
+
+    config.ConnectionMode = request.ConnectionMode;
+    config.SharePointFolderPath = request.SharePointFolderPath?.Trim();
+    config.UpdatedAt = DateTime.UtcNow;
+
+    if (string.IsNullOrWhiteSpace(request.SharePointSiteUrl) is false)
+    {
+      config.SharePointSiteUrl = request.SharePointSiteUrl.Trim();
+
+      var credentials = await credRepo.GetByUserIdAsync(user.Id, ct);
+      var spCredential = credentials.FirstOrDefault(c =>
+        c.IntegrationType.Equals("sharepoint", StringComparison.OrdinalIgnoreCase)
+      );
+
+      if (spCredential is not null && paragon.IsConfigured)
+      {
+        var jwt = paragon.GenerateToken(org.Id, spCredential.CredentialId);
+
+        config.SharePointSiteId = await paragon.ResolveSiteUrlAsync(
+          jwt,
+          spCredential.CredentialId,
+          config.SharePointSiteUrl,
+          ct
+        );
+      }
+    }
+
+    await repo.UpsertAsync(config, ct);
+
+    return Results.Ok(new IntegrationConfigResponse
+    {
+      Id = config.Id,
+      OrganizationId = config.OrganizationId,
+      ConnectionMode = config.ConnectionMode,
+      SharePointSiteUrl = config.SharePointSiteUrl,
+      SharePointSiteId = config.SharePointSiteId,
+      SharePointFolderPath = config.SharePointFolderPath,
+      UpdatedAt = config.UpdatedAt,
+    });
+  }
+
+  private static async Task<IResult> GetCredentials(
+    HttpContext context,
+    UserCredentialRepository repo,
+    CancellationToken ct
+  )
+  {
+    var user = context.GetUser();
+
+    var credentials = await repo.GetByUserIdAsync(user.Id, ct);
+
+    return Results.Ok(credentials.Select(c => new CredentialResponse
+    {
+      Id = c.Id,
+      CredentialId = c.CredentialId,
+      IntegrationType = c.IntegrationType,
+      ConnectedAt = c.ConnectedAt,
+    }));
+  }
+
+  private static async Task<IResult> GetOrgCredentials(
+    HttpContext context,
+    UserCredentialRepository repo,
+    CancellationToken ct
+  )
+  {
+    var org = context.GetOrganization();
+
+    var credentials = await repo.GetByOrganizationIdAsync(org.Id, ct);
+
+    return Results.Ok(credentials.Select(c => new CredentialResponse
+    {
+      Id = c.Id,
+      CredentialId = c.CredentialId,
+      IntegrationType = c.IntegrationType,
+      ConnectedAt = c.ConnectedAt,
+    }));
+  }
+
+  private static async Task<IResult> PostCredential(
+    CredentialRequest request,
+    HttpContext context,
+    UserCredentialRepository repo,
+    CancellationToken ct
+  )
+  {
+    var user = context.GetUser();
+    var org = context.GetOrganization();
+
+    var credential = new UserCredential
+    {
+      Id = ObjectId.GenerateNewId().ToString(),
+      UserId = user.Id,
+      OrganizationId = org.Id,
+      CredentialId = request.CredentialId,
+      IntegrationType = request.IntegrationType,
+      ConnectedAt = DateTime.UtcNow,
+    };
+
+    await repo.CreateAsync(credential, ct);
+
+    return Results.Created($"/api/integration/credentials/{credential.Id}", new CredentialResponse
+    {
+      Id = credential.Id,
+      CredentialId = credential.CredentialId,
+      IntegrationType = credential.IntegrationType,
+      ConnectedAt = credential.ConnectedAt,
+    });
+  }
+
+  private static async Task<IResult> PurgeOrgCredentials(
+    HttpContext context,
+    UserCredentialRepository repo,
+    CancellationToken ct
+  )
+  {
+    var org = context.GetOrganization();
+
+    _ = await repo.DeleteByOrganizationIdAsync(org.Id, ct);
+
+    return Results.NoContent();
+  }
+
+  private static async Task<IResult> DeleteCredential(
+    string credentialId,
+    HttpContext context,
+    UserCredentialRepository repo,
+    CancellationToken ct
+  )
+  {
+    var user = context.GetUser();
+
+    var deleted = await repo.DeleteByCredentialIdAsync(credentialId, user.Id, ct);
+
+    if (deleted is false)
+    {
+      return Results.Problem(detail: "Credential not found", statusCode: StatusCodes.Status404NotFound);
+    }
+
+    return Results.NoContent();
+  }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Api/Endpoints/ParagonEndpoints.cs

@@ -0,0 +1,46 @@
+using ParagonPlayground.Api.Context;
+using ParagonPlayground.Api.Services;
+using ParagonPlayground.Domain.DTOs;
+using ParagonPlayground.Infrastructure.Data;
+
+namespace ParagonPlayground.Api.Endpoints;
+
+internal static class ParagonEndpoints
+{
+  internal static RouteGroupBuilder MapParagonEndpoints(this RouteGroupBuilder group)
+  {
+    _ = group.MapGet("/token", GenerateToken);
+    _ = group.RequireAuthorization();
+    return group;
+  }
+
+  private static async Task<IResult> GenerateToken(
+    HttpContext context,
+    ParagonService paragon,
+    UserCredentialRepository credRepo,
+    CancellationToken ct
+  )
+  {
+    var user = context.GetUser();
+    var org = context.GetOrganization();
+
+    if (paragon.IsConfigured is false)
+    {
+      return Results.Problem(
+        detail: "Paragon integration is not configured. Set Paragon:ProjectId and Paragon:SigningKey.",
+        statusCode: StatusCodes.Status400BadRequest
+      );
+    }
+
+    var credentials = await credRepo.GetByUserIdAsync(user.Id, ct);
+    var spCredential = credentials.FirstOrDefault(c => c.IntegrationType.Equals("sharepoint", StringComparison.OrdinalIgnoreCase));
+
+    var jwt = paragon.GenerateToken(org.Id, spCredential?.CredentialId);
+
+    return Results.Ok(new ParagonTokenResponse
+    {
+      ParagonJwt = jwt,
+      ProjectId = paragon.ProjectId,
+    });
+  }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Api/Endpoints/StorageEndpoints.cs

@@ -0,0 +1,329 @@
+using System.Text.Json;
+
+using MongoDB.Bson;
+
+using ParagonPlayground.Api.Context;
+using ParagonPlayground.Api.Services;
+using ParagonPlayground.Domain.DTOs;
+using ParagonPlayground.Domain.Entities;
+using ParagonPlayground.Infrastructure.Data;
+
+namespace ParagonPlayground.Api.Endpoints;
+
+internal static class StorageEndpoints
+{
+  internal static RouteGroupBuilder MapStorageEndpoints(this RouteGroupBuilder group)
+  {
+    _ = group.MapGet("/", ListItems);
+    _ = group.MapPost("/folders", CreateFolder);
+    _ = group.MapPost("/files", UploadFile);
+    _ = group.MapDelete("/{id}", DeleteItem);
+    _ = group.MapGet("/{id}/download", GetDownloadUrls);
+    _ = group.MapGet("/{id}/content", ProxyContent);
+    _ = group.RequireAuthorization();
+    return group;
+  }
+
+  private static async Task<IResult> ListItems(
+    string? parentId,
+    HttpContext context,
+    StorageItemRepository repo,
+    UserRepository userRepo,
+    CancellationToken ct
+  )
+  {
+    var org = context.GetOrganization();
+
+    var items = await repo.GetByParentIdAsync(org.Id, parentId, ct);
+    var userIds = items.Select(i => i.CreatedByUserId).Distinct().ToList();
+    var users = new Dictionary<string, string>();
+
+    foreach (var uid in userIds)
+    {
+      var u = await userRepo.GetByIdAsync(uid, ct);
+      users[uid] = u?.DisplayName ?? "Unknown";
+    }
+
+    return Results.Ok(items.Select(i => new StorageItemResponse
+    {
+      Id = i.Id,
+      Name = i.Name,
+      IsFolder = i.IsFolder,
+      ParentId = i.ParentId,
+      ContentType = i.ContentType,
+      FileSize = i.FileSize,
+      SharePointWebUrl = i.SharePointWebUrl,
+      CreatedByUserId = i.CreatedByUserId,
+      CreatedByDisplayName = users.GetValueOrDefault(i.CreatedByUserId, "Unknown"),
+      CreatedAt = i.CreatedAt,
+    }));
+  }
+
+  private static async Task<IResult> CreateFolder(
+    CreateFolderRequest request,
+    HttpContext context,
+    StorageItemRepository repo,
+    CancellationToken ct
+  )
+  {
+    var user = context.GetUser();
+    var org = context.GetOrganization();
+
+    if (string.IsNullOrWhiteSpace(request.Name))
+    {
+      return Results.Problem(detail: "Folder name is required", statusCode: StatusCodes.Status400BadRequest);
+    }
+
+    var item = new StorageItem
+    {
+      Id = ObjectId.GenerateNewId().ToString(),
+      OrganizationId = org.Id,
+      Name = request.Name.Trim(),
+      IsFolder = true,
+      ParentId = request.ParentId,
+      CreatedByUserId = user.Id,
+      CreatedAt = DateTime.UtcNow,
+    };
+
+    await repo.CreateAsync(item, ct);
+
+    return Results.Created($"/api/storage/{item.Id}", new StorageItemResponse
+    {
+      Id = item.Id,
+      Name = item.Name,
+      IsFolder = true,
+      ParentId = item.ParentId,
+      CreatedByUserId = item.CreatedByUserId,
+      CreatedByDisplayName = user.DisplayName,
+      CreatedAt = item.CreatedAt,
+    });
+  }
+
+  private static async Task<IResult> UploadFile(
+    HttpContext context,
+    StorageItemRepository storageRepo,
+    UserCredentialRepository credRepo,
+    OrganizationIntegrationRepository configRepo,
+    ParagonService paragon,
+    UserRepository userRepo,
+    CancellationToken ct
+  )
+  {
+    var user = context.GetUser();
+    var org = context.GetOrganization();
+
+    var file = context.Request.Form.Files.Count > 0 ? context.Request.Form.Files[0] : null;
+
+    if (file is null || file.Length is 0)
+    {
+      return Results.Problem(detail: "File is required", statusCode: StatusCodes.Status400BadRequest);
+    }
+
+    var parentId = (string?)context.Request.Form["parentId"];
+
+    var config = await configRepo.GetByOrganizationIdAsync(org.Id, ct);
+
+    if (config is null || string.IsNullOrWhiteSpace(config.SharePointSiteId))
+    {
+      return Results.Problem(
+        detail: "SharePoint integration is not configured. Ask an admin to set it up.",
+        statusCode: StatusCodes.Status400BadRequest
+      );
+    }
+
+    var credentials = await credRepo.GetByUserIdAsync(user.Id, ct);
+    var spCredential = credentials.FirstOrDefault(c =>
+      c.IntegrationType.Equals("sharepoint", StringComparison.OrdinalIgnoreCase)
+    );
+
+    if (spCredential is null)
+    {
+      return Results.Problem(
+        detail: "No SharePoint credential found. Connect to SharePoint first.",
+        statusCode: StatusCodes.Status400BadRequest
+      );
+    }
+
+    if (paragon.IsConfigured is false)
+    {
+      return Results.Problem(
+        detail: "Paragon integration is not configured on the server.",
+        statusCode: StatusCodes.Status500InternalServerError
+      );
+    }
+
+    var jwt = paragon.GenerateToken(org.Id, spCredential.CredentialId);
+
+    string sharePointResponse;
+
+    await using (var stream = file.OpenReadStream())
+    {
+      sharePointResponse = await paragon.UploadFileAsync(
+        jwt,
+        spCredential.CredentialId,
+        config.SharePointSiteId,
+        config.SharePointFolderPath ?? "",
+        file.FileName,
+        stream,
+        file.ContentType,
+        ct
+      );
+    }
+
+    string? driveItemId = null;
+    string? webUrl = null;
+
+    try
+    {
+      using var doc = JsonDocument.Parse(sharePointResponse);
+
+      if (doc.RootElement.TryGetProperty("output", out var output))
+      {
+        driveItemId = output.TryGetProperty("id", out var id) ? id.GetString() : null;
+        webUrl = output.TryGetProperty("webUrl", out var wu) ? wu.GetString() : null;
+      }
+    }
+    catch (JsonException)
+    {
+      // Response parsing is best-effort; store what we have
+    }
+
+    var storageItem = new StorageItem
+    {
+      Id = ObjectId.GenerateNewId().ToString(),
+      OrganizationId = org.Id,
+      Name = file.FileName,
+      IsFolder = false,
+      ParentId = parentId,
+      ContentType = file.ContentType,
+      FileSize = file.Length,
+      SharePointSiteId = config.SharePointSiteId,
+      SharePointDriveItemId = driveItemId,
+      SharePointWebUrl = webUrl,
+      CreatedByUserId = user.Id,
+      CreatedAt = DateTime.UtcNow,
+    };
+
+    await storageRepo.CreateAsync(storageItem, ct);
+
+    return Results.Created($"/api/storage/{storageItem.Id}", new StorageItemResponse
+    {
+      Id = storageItem.Id,
+      Name = storageItem.Name,
+      IsFolder = false,
+      ParentId = storageItem.ParentId,
+      ContentType = storageItem.ContentType,
+      FileSize = storageItem.FileSize,
+      SharePointWebUrl = storageItem.SharePointWebUrl,
+      CreatedByUserId = storageItem.CreatedByUserId,
+      CreatedByDisplayName = user.DisplayName,
+      CreatedAt = storageItem.CreatedAt,
+    });
+  }
+
+  private static async Task<IResult> DeleteItem(
+    string id,
+    HttpContext context,
+    StorageItemRepository repo,
+    CancellationToken ct
+  )
+  {
+    var org = context.GetOrganization();
+
+    var item = await repo.GetByIdAsync(id, ct);
+
+    if (item is null || item.OrganizationId != org.Id)
+    {
+      return Results.Problem(detail: "Item not found", statusCode: StatusCodes.Status404NotFound);
+    }
+
+    await repo.DeleteAsync(id, ct);
+
+    return Results.NoContent();
+  }
+
+  private static async Task<IResult> GetDownloadUrls(
+    string id,
+    HttpContext context,
+    StorageItemRepository repo,
+    CancellationToken ct
+  )
+  {
+    var org = context.GetOrganization();
+
+    var item = await repo.GetByIdAsync(id, ct);
+
+    if (item is null || item.OrganizationId != org.Id || item.IsFolder)
+    {
+      return Results.Problem(detail: "Item not found", statusCode: StatusCodes.Status404NotFound);
+    }
+
+    var baseUrl = $"{context.Request.Scheme}://{context.Request.Host}";
+
+    return Results.Ok(new DownloadResponse
+    {
+      SharePointUrl = item.SharePointWebUrl,
+      ProxyUrl = $"{baseUrl}/api/storage/{item.Id}/content",
+    });
+  }
+
+  private static async Task<IResult> ProxyContent(
+    string id,
+    HttpContext context,
+    StorageItemRepository storageRepo,
+    UserCredentialRepository credRepo,
+    ParagonService paragon,
+    CancellationToken ct
+  )
+  {
+    var user = context.GetUser();
+    var org = context.GetOrganization();
+
+    var item = await storageRepo.GetByIdAsync(id, ct);
+
+    if (item is null || item.OrganizationId != org.Id || item.IsFolder)
+    {
+      return Results.Problem(detail: "Item not found", statusCode: StatusCodes.Status404NotFound);
+    }
+
+    if (string.IsNullOrEmpty(item.SharePointDriveItemId) || string.IsNullOrEmpty(item.SharePointSiteId))
+    {
+      return Results.Problem(
+        detail: "No SharePoint reference available for this file.",
+        statusCode: StatusCodes.Status400BadRequest
+      );
+    }
+
+    var credentials = await credRepo.GetByUserIdAsync(user.Id, ct);
+    var spCredential = credentials.FirstOrDefault(c =>
+      c.IntegrationType.Equals("sharepoint", StringComparison.OrdinalIgnoreCase)
+    );
+
+    if (spCredential is null)
+    {
+      return Results.Problem(
+        detail: "No SharePoint credential found.",
+        statusCode: StatusCodes.Status400BadRequest
+      );
+    }
+
+    if (paragon.IsConfigured is false)
+    {
+      return Results.Problem(
+        detail: "Paragon integration is not configured.",
+        statusCode: StatusCodes.Status500InternalServerError
+      );
+    }
+
+    var jwt = paragon.GenerateToken(org.Id, spCredential.CredentialId);
+    var fileStream = await paragon.DownloadFileAsync(
+      jwt,
+      spCredential.CredentialId,
+      item.SharePointSiteId,
+      item.SharePointDriveItemId,
+      ct
+    );
+
+    return Results.Stream(fileStream, item.ContentType ?? "application/octet-stream", item.Name);
+  }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Api/Middleware/NotAuthenticatedExceptionHandler.cs

@@ -0,0 +1,50 @@
+using Microsoft.AspNetCore.Diagnostics;
+using Microsoft.AspNetCore.Mvc;
+
+using ParagonPlayground.Api.Context;
+
+namespace ParagonPlayground.Api.Middleware;
+
+internal sealed class NotAuthenticatedExceptionHandler(ILogger<NotAuthenticatedExceptionHandler> logger) : IExceptionHandler
+{
+  private static readonly Action<ILogger, string, Exception> LogUnauthorizedAccess =
+    LoggerMessage.Define<string>(
+      LogLevel.Warning,
+      new EventId(1, "NotAuthenticatedException"),
+      "Session state was accessed without an authenticated request. Path: {Path}"
+    );
+
+  private readonly ILogger<NotAuthenticatedExceptionHandler> _logger = logger;
+
+  public ValueTask<bool> TryHandleAsync(
+    HttpContext httpContext,
+    Exception exception,
+    CancellationToken cancellationToken
+  )
+  {
+    if (exception is not NotAuthenticatedException)
+    {
+      return ValueTask.FromResult(false);
+    }
+
+    LogUnauthorizedAccess(_logger, httpContext.Request.Path.ToString(), exception);
+
+    httpContext.Response.StatusCode = StatusCodes.Status401Unauthorized;
+
+    if (httpContext.RequestServices.GetService<IProblemDetailsService>() is { } problemDetailsService)
+    {
+      return problemDetailsService.TryWriteAsync(new ProblemDetailsContext
+      {
+        HttpContext = httpContext,
+        ProblemDetails = new ProblemDetails
+        {
+          Status = StatusCodes.Status401Unauthorized,
+          Title = "Unauthorized",
+          Detail = exception.Message,
+        },
+      });
+    }
+
+    return ValueTask.FromResult(false);
+  }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Api/Middleware/SessionAuthMiddleware.cs

@@ -1,52 +0,0 @@
-using ParagonPlayground.Api.Context;
-using ParagonPlayground.Api.Infrastructure;
-using ParagonPlayground.Infrastructure.Data;
-using ParagonPlayground.Infrastructure.Services;
-
-namespace ParagonPlayground.Api.Middleware;
-
-internal class SessionAuthMiddleware(RequestDelegate next)
-{
-  private readonly RequestDelegate _next = next;
-
-  public async Task InvokeAsync(
-    HttpContext context,
-    SessionRepository sessionRepo,
-    UserRepository userRepo,
-    OrganizationRepository orgRepo,
-    CookieService cookieService
-  )
-  {
-    var ct = context.RequestAborted;
-    var sessionToken = cookieService.GetSessionToken(context);
-
-    if (string.IsNullOrEmpty(sessionToken) is false)
-    {
-      var tokenHash = TokenHelper.HashToken(sessionToken);
-      var session = await sessionRepo.GetByTokenHashAsync(tokenHash, ct);
-
-      if (session is not null && session.ExpiresAt > DateTime.UtcNow)
-      {
-        context.SetSession(session);
-        context.SetSessionToken(sessionToken);
-
-        var user = await userRepo.GetByIdAsync(session.UserId, ct);
-
-        if (user is not null)
-        {
-          context.SetUser(user);
-
-          var org = await orgRepo.GetByIdAsync(user.OrganizationId, ct);
-
-          if (org is not null)
-          {
-            context.SetOrganization(org);
-          }
-        }
-      }
-    }
-
-    await _next(context);
-  }
-
-}

src/ParagonPlayground/backend/src/ParagonPlayground.Api/Options/ParagonOptions.cs

@@ -0,0 +1,12 @@
+namespace ParagonPlayground.Api.Options;
+
+internal class ParagonOptions
+{
+  public const string SectionName = "Paragon";
+
+  public string ProjectId { get; set; } = string.Empty;
+
+  public string SigningKey { get; set; } = string.Empty;
+
+  public string ProxyBaseUrl { get; set; } = "https://proxy.useparagon.com";
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Api/ParagonPlayground.Api.csproj

@@ -2,6 +2,8 @@
 
   <ItemGroup>
     <PackageReference Include="MongoDB.Driver" />
+    <PackageReference Include="System.IdentityModel.Tokens.Jwt" />
+    <PackageReference Include="Microsoft.Extensions.Http.Resilience" />
   </ItemGroup>
 
   <ItemGroup>

src/ParagonPlayground/backend/src/ParagonPlayground.Api/Program.cs

@@ -1,17 +1,22 @@
+using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.HttpOverrides;
+using Microsoft.Extensions.Options;
 
+using ParagonPlayground.Api.Auth;
 using ParagonPlayground.Api.Endpoints;
 using ParagonPlayground.Api.Middleware;
 using ParagonPlayground.Api.Options;
+using ParagonPlayground.Api.Services;
 using ParagonPlayground.Infrastructure.Data;
 using ParagonPlayground.Infrastructure.Services;
 
 var builder = WebApplication.CreateBuilder(args);
 
 builder.Services.Configure<MongoDbOptions>(builder.Configuration.GetSection(MongoDbOptions.SectionName));
+
 builder.Services.AddSingleton(static sp =>
 {
-  var opts = sp.GetRequiredService<Microsoft.Extensions.Options.IOptions<MongoDbOptions>>().Value;
+  var opts = sp.GetRequiredService<IOptions<MongoDbOptions>>().Value;
   return new MongoDbContext(opts.ConnectionString, opts.DatabaseName);
 });
 
@@ -20,6 +25,29 @@ builder.Services.AddSingleton<CookieService>();
 builder.Services.AddSingleton<OrganizationRepository>();
 builder.Services.AddSingleton<UserRepository>();
 builder.Services.AddSingleton<SessionRepository>();
+builder.Services.AddSingleton<StorageItemRepository>();
+builder.Services.AddSingleton<UserCredentialRepository>();
+builder.Services.AddSingleton<OrganizationIntegrationRepository>();
+builder.Services.AddSingleton<ParagonService>();
+
+builder.Services.Configure<ParagonOptions>(builder.Configuration.GetSection(ParagonOptions.SectionName));
+
+builder.Services.AddHttpClient<ParagonApiClient>()
+  .AddStandardResilienceHandler();
+
+builder.Services.AddProblemDetails();
+builder.Services.AddExceptionHandler<NotAuthenticatedExceptionHandler>();
+
+builder.Services
+  .AddAuthentication(SessionAuthDefaults.Scheme)
+  .AddScheme<AuthenticationSchemeOptions, SessionAuthenticationHandler>(
+    SessionAuthDefaults.Scheme,
+    _ => { }
+  );
+
+builder.Services
+  .AddAuthorizationBuilder()
+  .AddPolicy(PolicyNames.AdminOnly, policy => policy.RequireRole(RoleNames.Admin));
 
 builder.Services.Configure<ForwardedHeadersOptions>(static options =>
 {
@@ -29,8 +57,14 @@ builder.Services.Configure<ForwardedHeadersOptions>(static options =>
 var app = builder.Build();
 
 app.UseForwardedHeaders();
+app.UseExceptionHandler();
+app.UseStatusCodePages();
 app.UseMiddleware<TenantResolutionMiddleware>();
-app.UseMiddleware<SessionAuthMiddleware>();
+app.UseAuthentication();
+app.UseAuthorization();
 app.MapGroup("/api/auth").MapAuthEndpoints();
+app.MapGroup("/api/paragon").MapParagonEndpoints();
+app.MapGroup("/api/integration").MapIntegrationEndpoints();
+app.MapGroup("/api/storage").MapStorageEndpoints();
 
 app.Run();

src/ParagonPlayground/backend/src/ParagonPlayground.Api/Services/ParagonApiClient.cs

@@ -0,0 +1,107 @@
+using System.Net.Http.Headers;
+using System.Text.Json;
+
+using Microsoft.Extensions.Options;
+
+using ParagonPlayground.Api.Options;
+
+namespace ParagonPlayground.Api.Services;
+
+internal sealed class ParagonApiClient
+{
+  private readonly HttpClient _httpClient;
+  private readonly string _projectId;
+
+  public ParagonApiClient(HttpClient httpClient, IOptions<ParagonOptions> options)
+  {
+    _httpClient = httpClient;
+    _projectId = options.Value.ProjectId;
+    _httpClient.BaseAddress = new Uri(options.Value.ProxyBaseUrl.TrimEnd('/') + "/");
+  }
+
+  public async Task<string> UploadFileAsync(
+    string jwt,
+    string credentialId,
+    string siteId,
+    string folderPath,
+    string fileName,
+    Stream fileStream,
+    string contentType,
+    CancellationToken ct
+  )
+  {
+    var url = $"projects/{_projectId}/sdk/proxy/sharepoint"
+      + $"/sites/{siteId}/drive/root:/{folderPath.Trim('/')}/{fileName}:/content";
+
+    using var ms = new MemoryStream();
+    await fileStream.CopyToAsync(ms, ct).ConfigureAwait(false);
+    ms.Position = 0;
+
+    using var request = new HttpRequestMessage(HttpMethod.Put, url)
+    {
+      Content = new StreamContent(ms),
+    };
+
+    _ = request.Headers.TryAddWithoutValidation("Authorization", $"Bearer {jwt}");
+    _ = request.Headers.TryAddWithoutValidation("X-Paragon-Credential", credentialId);
+    request.Content.Headers.ContentType = new MediaTypeHeaderValue(contentType);
+
+    using var response = await _httpClient.SendAsync(request, ct).ConfigureAwait(false);
+    _ = response.EnsureSuccessStatusCode();
+
+    return await response.Content.ReadAsStringAsync(ct).ConfigureAwait(false);
+  }
+
+  public async Task<Stream> DownloadFileAsync(
+    string jwt,
+    string credentialId,
+    string siteId,
+    string driveItemId,
+    CancellationToken ct
+  )
+  {
+    var url = $"projects/{_projectId}/sdk/proxy/sharepoint"
+      + $"/sites/{siteId}/drive/items/{driveItemId}/content";
+
+    using var request = new HttpRequestMessage(HttpMethod.Get, url);
+
+    _ = request.Headers.TryAddWithoutValidation("Authorization", $"Bearer {jwt}");
+    _ = request.Headers.TryAddWithoutValidation("X-Paragon-Credential", credentialId);
+
+    var response = await _httpClient.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, ct).ConfigureAwait(false);
+    _ = response.EnsureSuccessStatusCode();
+
+    return await response.Content.ReadAsStreamAsync(ct).ConfigureAwait(false);
+  }
+
+  public async Task<string> ResolveSiteUrlAsync(
+    string jwt,
+    string credentialId,
+    string siteUrl,
+    CancellationToken ct
+  )
+  {
+    var uri = new Uri(siteUrl);
+    var segments = uri.AbsolutePath.TrimEnd('/')
+      .Split('/', StringSplitOptions.RemoveEmptyEntries);
+    var encodedPath = segments.Length > 0
+      ? ":/" + string.Join("/", segments.Select(Uri.EscapeDataString))
+      : "";
+
+    var proxyUrl = $"projects/{_projectId}/sdk/proxy/sharepoint/sites/{uri.Host}{encodedPath}";
+
+    using var request = new HttpRequestMessage(HttpMethod.Get, proxyUrl);
+    _ = request.Headers.TryAddWithoutValidation("Authorization", $"Bearer {jwt}");
+    _ = request.Headers.TryAddWithoutValidation("X-Paragon-Credential", credentialId);
+
+    using var response = await _httpClient.SendAsync(request, ct).ConfigureAwait(false);
+    _ = response.EnsureSuccessStatusCode();
+
+    var json = await response.Content.ReadAsStringAsync(ct).ConfigureAwait(false);
+    using var doc = JsonDocument.Parse(json);
+
+    var output = doc.RootElement.GetProperty("output");
+    var idProp = output.GetProperty("id");
+    return idProp.GetString() ?? "";
+  }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Api/Services/ParagonService.cs

@@ -0,0 +1,106 @@
+using System.IdentityModel.Tokens.Jwt;
+using System.Security.Claims;
+using System.Security.Cryptography;
+using System.Text.Json;
+
+using Microsoft.Extensions.Options;
+using Microsoft.IdentityModel.Tokens;
+
+using ParagonPlayground.Api.Options;
+
+namespace ParagonPlayground.Api.Services;
+
+internal sealed class ParagonService(IOptions<ParagonOptions> options, ParagonApiClient apiClient)
+{
+  private readonly ParagonOptions _options = options.Value;
+  private readonly ParagonApiClient _apiClient = apiClient;
+
+  public string ProjectId => _options.ProjectId;
+
+  public bool IsConfigured =>
+    string.IsNullOrEmpty(_options.ProjectId) is false
+    && string.IsNullOrEmpty(_options.SigningKey) is false;
+
+  public string GenerateToken(string organizationId, string? credentialId = null)
+  {
+    if (IsConfigured is false)
+    {
+      throw new InvalidOperationException("Paragon is not configured. Set Paragon:ProjectId and Paragon:SigningKey.");
+    }
+
+    using var rsa = RSA.Create();
+    rsa.ImportFromPem(_options.SigningKey);
+
+    var key = new RsaSecurityKey(rsa.ExportParameters(true)) { KeyId = "paragon" };
+    var signingCredentials = new SigningCredentials(key, SecurityAlgorithms.RsaSha256);
+
+    var now = DateTime.UtcNow;
+
+    var permissions = credentialId is not null
+      ? new Dictionary<string, object>
+      {
+        ["integration:sharepoint"] = new Dictionary<string, object>
+        {
+          [$"credential:{credentialId}"] = true,
+        },
+      }
+      : (object)new Dictionary<string, object>
+      {
+        ["integration:sharepoint"] = new Dictionary<string, object>
+        {
+          ["credential:*"] = new[] { "credential:write" },
+        },
+      };
+
+    var claims = new[]
+    {
+      new Claim("sub", $"org:{organizationId}"),
+      new Claim("aud", $"useparagon.com/{_options.ProjectId}"),
+      new Claim("urn:useparagon:connect:permissions", JsonSerializer.Serialize(permissions)),
+    };
+
+    var token = new JwtSecurityToken(
+      claims: claims,
+      notBefore: now,
+      expires: now.AddHours(1),
+      signingCredentials: signingCredentials
+    );
+
+    return new JwtSecurityTokenHandler().WriteToken(token);
+  }
+
+  public Task<string> UploadFileAsync(
+    string jwt,
+    string credentialId,
+    string siteId,
+    string folderPath,
+    string fileName,
+    Stream fileStream,
+    string contentType,
+    CancellationToken ct
+  )
+  {
+    return _apiClient.UploadFileAsync(jwt, credentialId, siteId, folderPath, fileName, fileStream, contentType, ct);
+  }
+
+  public Task<string> ResolveSiteUrlAsync(
+    string jwt,
+    string credentialId,
+    string siteUrl,
+    CancellationToken ct
+  )
+  {
+    return _apiClient.ResolveSiteUrlAsync(jwt, credentialId, siteUrl, ct);
+  }
+
+  public Task<Stream> DownloadFileAsync(
+    string jwt,
+    string credentialId,
+    string siteId,
+    string driveItemId,
+    CancellationToken ct
+  )
+  {
+    return _apiClient.DownloadFileAsync(jwt, credentialId, siteId, driveItemId, ct);
+  }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Cli/Commands/ProvisionUserCommand.cs

@@ -14,7 +14,8 @@ namespace ParagonPlayground.Cli.Commands;
 internal class ProvisionUserCommand(
   OrganizationRepository orgRepo,
   UserRepository userRepo,
-  PasswordService passwordService) : AsyncCommand<ProvisionUserCommand.Settings>
+  PasswordService passwordService
+) : AsyncCommand<ProvisionUserCommand.Settings>
 {
   internal class Settings : CommandSettings
   {
@@ -33,6 +34,10 @@ internal class ProvisionUserCommand(
     [Description("Organization slug")]
     [CommandOption("-o|--org-slug")]
     public required string OrgSlug { get; set; }
+
+    [Description("User role (admin or member)")]
+    [CommandOption("-r|--role")]
+    public string Role { get; set; } = "member";
   }
 
   protected override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
@@ -60,6 +65,7 @@ internal class ProvisionUserCommand(
       DisplayName = settings.Name,
       PasswordHash = passwordService.Hash(settings.Password),
       OrganizationId = org.Id,
+      Role = settings.Role,
       CreatedAt = DateTime.UtcNow,
     };
 

src/ParagonPlayground/backend/src/ParagonPlayground.Cli/Commands/SeedCommand.cs

@@ -41,11 +41,11 @@ internal class SeedCommand(
 
     var users = new[]
     {
-      (Email: "alice@acme.com", Name: "Alice", Password: "password123"),
+      (Email: "alice@acme.com", Name: "Alice", Password: "password123", Role: "admin"),
-      (Email: "bob@acme.com", Name: "Bob", Password: "password123"),
+      (Email: "bob@acme.com", Name: "Bob", Password: "password123", Role: "member"),
     };
 
-    foreach (var (email, name, password) in users)
+    foreach (var (email, name, password, role) in users)
     {
       var existing = await userRepo.GetByEmailAsync(email, cancellationToken);
 
@@ -58,6 +58,7 @@ internal class SeedCommand(
           DisplayName = name,
           PasswordHash = passwordService.Hash(password),
           OrganizationId = org.Id,
+          Role = role,
           CreatedAt = DateTime.UtcNow,
         };
 
@@ -66,10 +67,19 @@ internal class SeedCommand(
         AnsiConsole.MarkupLine($"[green]Created user: {user.Email} ({user.DisplayName})[/]");
       }
       else
+      {
+        if (existing.Role != role)
+        {
+          existing.Role = role;
+          await userRepo.ReplaceAsync(existing, cancellationToken);
+          AnsiConsole.MarkupLine($"[yellow]User '{email}' role updated to '{role}'[/]");
+        }
+        else
         {
           AnsiConsole.MarkupLine($"[yellow]User '{email}' already exists[/]");
         }
       }
+    }
 
     AnsiConsole.MarkupLine("[bold green]Seed complete![/]");
 

src/ParagonPlayground/backend/src/ParagonPlayground.Domain/.editorconfig

@@ -0,0 +1,2 @@
+[*.{cs,vb}]
+dotnet_diagnostic.CA1056.severity = none

src/ParagonPlayground/backend/src/ParagonPlayground.Domain/DTOs/CreateFolderRequest.cs

@@ -0,0 +1,11 @@
+namespace ParagonPlayground.Domain.DTOs;
+
+/// <summary>Request to create a new virtual folder.</summary>
+public class CreateFolderRequest
+{
+  /// <summary>Folder name.</summary>
+  public string Name { get; set; } = string.Empty;
+
+  /// <summary>Optional parent folder ID (null for root).</summary>
+  public string? ParentId { get; set; }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Domain/DTOs/CredentialRequest.cs

@@ -0,0 +1,11 @@
+namespace ParagonPlayground.Domain.DTOs;
+
+/// <summary>Request to store a new Paragon credential mapping.</summary>
+public class CredentialRequest
+{
+  /// <summary>Paragon credential ID from the integration install flow.</summary>
+  public string CredentialId { get; set; } = string.Empty;
+
+  /// <summary>Integration type (e.g. "sharepoint").</summary>
+  public string IntegrationType { get; set; } = string.Empty;
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Domain/DTOs/CredentialResponse.cs

@@ -0,0 +1,17 @@
+namespace ParagonPlayground.Domain.DTOs;
+
+/// <summary>Stored Paragon credential for the current user.</summary>
+public class CredentialResponse
+{
+  /// <summary>Unique identifier.</summary>
+  public string Id { get; set; } = string.Empty;
+
+  /// <summary>Paragon credential ID.</summary>
+  public string CredentialId { get; set; } = string.Empty;
+
+  /// <summary>Integration type (e.g. "sharepoint").</summary>
+  public string IntegrationType { get; set; } = string.Empty;
+
+  /// <summary>Timestamp when the credential was connected.</summary>
+  public DateTime ConnectedAt { get; set; }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Domain/DTOs/DownloadResponse.cs

@@ -0,0 +1,11 @@
+namespace ParagonPlayground.Domain.DTOs;
+
+/// <summary>Download URLs for a stored file.</summary>
+public class DownloadResponse
+{
+  /// <summary>Direct SharePoint web URL (opens in SharePoint).</summary>
+  public string? SharePointUrl { get; set; }
+
+  /// <summary>App-proxied download URL (streams through the backend via Paragon).</summary>
+  public string? ProxyUrl { get; set; }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Domain/DTOs/IntegrationConfigRequest.cs

@@ -0,0 +1,14 @@
+namespace ParagonPlayground.Domain.DTOs;
+
+/// <summary>Request to create or update the organization's integration configuration.</summary>
+public class IntegrationConfigRequest
+{
+  /// <summary>Connection mode: "default" (ISV-provided app) or "byo" (user-configured OAuth).</summary>
+  public string ConnectionMode { get; set; } = "default";
+
+  /// <summary>Target SharePoint site URL (e.g. https://contoso.sharepoint.com/sites/MySite).</summary>
+  public string? SharePointSiteUrl { get; set; }
+
+  /// <summary>Target folder path within the SharePoint site.</summary>
+  public string? SharePointFolderPath { get; set; }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Domain/DTOs/IntegrationConfigResponse.cs

@@ -0,0 +1,26 @@
+namespace ParagonPlayground.Domain.DTOs;
+
+/// <summary>Organization's Paragon/SharePoint integration configuration.</summary>
+public class IntegrationConfigResponse
+{
+  /// <summary>Unique identifier.</summary>
+  public string Id { get; set; } = string.Empty;
+
+  /// <summary>Organization this config belongs to.</summary>
+  public string OrganizationId { get; set; } = string.Empty;
+
+  /// <summary>Connection mode: "default" (ISV-provided app) or "byo" (user-configured OAuth).</summary>
+  public string ConnectionMode { get; set; } = "default";
+
+  /// <summary>Full SharePoint site URL (e.g. https://contoso.sharepoint.com/sites/MySite).</summary>
+  public string? SharePointSiteUrl { get; set; }
+
+  /// <summary>Resolved SharePoint site ID (e.g. contoso.sharepoint.com,guid,guid).</summary>
+  public string? SharePointSiteId { get; set; }
+
+  /// <summary>Target folder path within SharePoint.</summary>
+  public string? SharePointFolderPath { get; set; }
+
+  /// <summary>Timestamp of last update.</summary>
+  public DateTime UpdatedAt { get; set; }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Domain/DTOs/ParagonTokenResponse.cs

@@ -0,0 +1,11 @@
+namespace ParagonPlayground.Domain.DTOs;
+
+/// <summary>Response containing a signed Paragon JWT and project ID.</summary>
+public class ParagonTokenResponse
+{
+  /// <summary>Signed JWT for authenticating with the Paragon SDK.</summary>
+  public string ParagonJwt { get; set; } = string.Empty;
+
+  /// <summary>Paragon project ID for SDK initialization.</summary>
+  public string ProjectId { get; set; } = string.Empty;
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Domain/DTOs/StorageItemResponse.cs

@@ -0,0 +1,35 @@
+namespace ParagonPlayground.Domain.DTOs;
+
+/// <summary>File or folder returned by the storage API.</summary>
+public class StorageItemResponse
+{
+  /// <summary>Unique identifier.</summary>
+  public string Id { get; set; } = string.Empty;
+
+  /// <summary>Display name.</summary>
+  public string Name { get; set; } = string.Empty;
+
+  /// <summary>True for folders, false for files.</summary>
+  public bool IsFolder { get; set; }
+
+  /// <summary>Parent folder ID (null for root items).</summary>
+  public string? ParentId { get; set; }
+
+  /// <summary>MIME type (null for folders).</summary>
+  public string? ContentType { get; set; }
+
+  /// <summary>File size in bytes (0 for folders).</summary>
+  public long FileSize { get; set; }
+
+  /// <summary>Direct SharePoint web URL (null for folders).</summary>
+  public string? SharePointWebUrl { get; set; }
+
+  /// <summary>User who created this item.</summary>
+  public string CreatedByUserId { get; set; } = string.Empty;
+
+  /// <summary>Display name of the creator.</summary>
+  public string CreatedByDisplayName { get; set; } = string.Empty;
+
+  /// <summary>Timestamp when the item was created.</summary>
+  public DateTime CreatedAt { get; set; }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Domain/DTOs/UserResponse.cs

@@ -20,4 +20,7 @@ public class UserResponse
 
   /// <summary>URL-friendly slug of the user's organization.</summary>
   public string OrganizationSlug { get; set; } = string.Empty;
+
+  /// <summary>User's role within the organization ("admin" or "member").</summary>
+  public string Role { get; set; } = "member";
 }

src/ParagonPlayground/backend/src/ParagonPlayground.Domain/Entities/OrganizationIntegration.cs

@@ -0,0 +1,26 @@
+namespace ParagonPlayground.Domain.Entities;
+
+/// <summary>Per-organization Paragon/SharePoint integration configuration.</summary>
+public class OrganizationIntegration
+{
+  /// <summary>Unique identifier (MongoDB ObjectId).</summary>
+  public string Id { get; set; } = string.Empty;
+
+  /// <summary>Organization this config belongs to.</summary>
+  public string OrganizationId { get; set; } = string.Empty;
+
+  /// <summary>Connection mode: "default" (ISV-provided app) or "byo" (user-configured OAuth).</summary>
+  public string ConnectionMode { get; set; } = "default";
+
+  /// <summary>Full SharePoint site URL (e.g. https://contoso.sharepoint.com/sites/MySite).</summary>
+  public string? SharePointSiteUrl { get; set; }
+
+  /// <summary>Resolved SharePoint site ID (e.g. contoso.sharepoint.com,guid,guid).</summary>
+  public string? SharePointSiteId { get; set; }
+
+  /// <summary>Target folder path within the SharePoint site.</summary>
+  public string? SharePointFolderPath { get; set; }
+
+  /// <summary>Timestamp of the last configuration update.</summary>
+  public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Domain/Entities/StorageItem.cs

@@ -0,0 +1,41 @@
+namespace ParagonPlayground.Domain.Entities;
+
+/// <summary>Represents a file or folder in the virtual storage tree (independent of SharePoint structure).</summary>
+public class StorageItem
+{
+  /// <summary>Unique identifier (MongoDB ObjectId).</summary>
+  public string Id { get; set; } = string.Empty;
+
+  /// <summary>Organization this item belongs to.</summary>
+  public string OrganizationId { get; set; } = string.Empty;
+
+  /// <summary>Display name of the file or folder.</summary>
+  public string Name { get; set; } = string.Empty;
+
+  /// <summary>True if this is a folder, false if it's a file.</summary>
+  public bool IsFolder { get; set; }
+
+  /// <summary>Parent folder ID (null for root-level items).</summary>
+  public string? ParentId { get; set; }
+
+  /// <summary>MIME type of the file (null for folders).</summary>
+  public string? ContentType { get; set; }
+
+  /// <summary>File size in bytes (0 for folders).</summary>
+  public long FileSize { get; set; }
+
+  /// <summary>SharePoint site ID where the file was uploaded (null for folders).</summary>
+  public string? SharePointSiteId { get; set; }
+
+  /// <summary>SharePoint drive item ID (null for folders).</summary>
+  public string? SharePointDriveItemId { get; set; }
+
+  /// <summary>SharePoint web URL for direct access (null for folders).</summary>
+  public string? SharePointWebUrl { get; set; }
+
+  /// <summary>User who created this item.</summary>
+  public string CreatedByUserId { get; set; } = string.Empty;
+
+  /// <summary>Timestamp when the item was created.</summary>
+  public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Domain/Entities/User.cs

@@ -18,6 +18,9 @@ public class User
   /// <summary>Identifier of the organization this user belongs to.</summary>
   public string OrganizationId { get; set; } = string.Empty;
 
+  /// <summary>Role within the organization: "admin" or "member".</summary>
+  public string Role { get; set; } = "member";
+
   /// <summary>Timestamp when the user was created.</summary>
   public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
 }

src/ParagonPlayground/backend/src/ParagonPlayground.Domain/Entities/UserCredential.cs

@@ -0,0 +1,23 @@
+namespace ParagonPlayground.Domain.Entities;
+
+/// <summary>Maps an app user to their Paragon integration credential.</summary>
+public class UserCredential
+{
+  /// <summary>Unique identifier (MongoDB ObjectId).</summary>
+  public string Id { get; set; } = string.Empty;
+
+  /// <summary>App user who owns this credential.</summary>
+  public string UserId { get; set; } = string.Empty;
+
+  /// <summary>Organization the user belongs to.</summary>
+  public string OrganizationId { get; set; } = string.Empty;
+
+  /// <summary>Paragon credential ID from the integration install flow.</summary>
+  public string CredentialId { get; set; } = string.Empty;
+
+  /// <summary>Integration type (e.g. "sharepoint").</summary>
+  public string IntegrationType { get; set; } = string.Empty;
+
+  /// <summary>Timestamp when the credential was connected.</summary>
+  public DateTime ConnectedAt { get; set; } = DateTime.UtcNow;
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Infrastructure/Data/MongoDbContext.cs

@@ -22,6 +22,18 @@ public sealed class MongoDbContext : IDisposable
   public IMongoCollection<Session> Sessions =>
       _database.GetCollection<Session>("Sessions");
 
+  /// <summary>Storage items collection.</summary>
+  public IMongoCollection<StorageItem> StorageItems =>
+      _database.GetCollection<StorageItem>("StorageItems");
+
+  /// <summary>User credentials collection.</summary>
+  public IMongoCollection<UserCredential> UserCredentials =>
+      _database.GetCollection<UserCredential>("UserCredentials");
+
+  /// <summary>Organization integrations collection.</summary>
+  public IMongoCollection<OrganizationIntegration> OrganizationIntegrations =>
+      _database.GetCollection<OrganizationIntegration>("OrganizationIntegrations");
+
   /// <summary>Initializes a new MongoDbContext and connects to the specified database.</summary>
   public MongoDbContext(string connectionString, string databaseName)
   {

src/ParagonPlayground/backend/src/ParagonPlayground.Infrastructure/Data/OrganizationIntegrationRepository.cs

@@ -0,0 +1,38 @@
+using MongoDB.Driver;
+
+using ParagonPlayground.Domain.Entities;
+
+namespace ParagonPlayground.Infrastructure.Data;
+
+/// <summary>Repository for organization integration configuration data access.</summary>
+public class OrganizationIntegrationRepository(MongoDbContext context)
+{
+  private readonly MongoDbContext _context = context;
+
+  /// <summary>Finds the integration config for an organization.</summary>
+  public async Task<OrganizationIntegration?> GetByOrganizationIdAsync(
+    string organizationId,
+    CancellationToken ct
+  )
+  {
+    return await _context.OrganizationIntegrations
+      .Find(c => c.OrganizationId == organizationId)
+      .FirstOrDefaultAsync(ct)
+      .ConfigureAwait(false);
+  }
+
+  /// <summary>Creates or replaces the integration config for an organization.</summary>
+  public async Task UpsertAsync(OrganizationIntegration config, CancellationToken ct)
+  {
+    ArgumentNullException.ThrowIfNull(config);
+
+    var filter = Builders<OrganizationIntegration>.Filter
+      .Eq(c => c.OrganizationId, config.OrganizationId);
+
+    var options = new ReplaceOptions() { IsUpsert = true };
+
+    _ = await _context.OrganizationIntegrations
+      .ReplaceOneAsync(filter, config, options, ct)
+      .ConfigureAwait(false);
+  }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Infrastructure/Data/OrganizationRepository.cs

@@ -12,18 +12,26 @@ public class OrganizationRepository(MongoDbContext context)
   /// <summary>Finds an organization by its URL slug.</summary>
   public async Task<Organization?> GetBySlugAsync(string slug, CancellationToken cancellationToken)
   {
-    return await _context.Organizations.Find(o => o.Slug == slug).FirstOrDefaultAsync(cancellationToken).ConfigureAwait(false);
+    return await _context.Organizations
+      .Find(o => o.Slug == slug)
+      .FirstOrDefaultAsync(cancellationToken)
+      .ConfigureAwait(false);
   }
 
   /// <summary>Finds an organization by its unique identifier.</summary>
   public async Task<Organization?> GetByIdAsync(string id, CancellationToken cancellationToken)
   {
-    return await _context.Organizations.Find(o => o.Id == id).FirstOrDefaultAsync(cancellationToken).ConfigureAwait(false);
+    return await _context.Organizations
+      .Find(o => o.Id == id)
+      .FirstOrDefaultAsync(cancellationToken)
+      .ConfigureAwait(false);
   }
 
   /// <summary>Creates a new organization in the database.</summary>
   public async Task CreateAsync(Organization organization, CancellationToken cancellationToken)
   {
-    await _context.Organizations.InsertOneAsync(organization, cancellationToken: cancellationToken).ConfigureAwait(false);
+    await _context.Organizations
+      .InsertOneAsync(organization, cancellationToken: cancellationToken)
+      .ConfigureAwait(false);
   }
 }

src/ParagonPlayground/backend/src/ParagonPlayground.Infrastructure/Data/SessionRepository.cs

@@ -12,24 +12,33 @@ public class SessionRepository(MongoDbContext context)
   /// <summary>Finds a session by its token hash.</summary>
   public async Task<Session?> GetByTokenHashAsync(string tokenHash, CancellationToken cancellationToken)
   {
-    return await _context.Sessions.Find(s => s.TokenHash == tokenHash).FirstOrDefaultAsync(cancellationToken).ConfigureAwait(false);
+    return await _context.Sessions
+      .Find(s => s.TokenHash == tokenHash)
+      .FirstOrDefaultAsync(cancellationToken)
+      .ConfigureAwait(false);
   }
 
   /// <summary>Creates a new session in the database.</summary>
   public async Task CreateAsync(Session session, CancellationToken cancellationToken)
   {
-    await _context.Sessions.InsertOneAsync(session, new InsertOneOptions(), cancellationToken).ConfigureAwait(false);
+    await _context.Sessions
+      .InsertOneAsync(session, new InsertOneOptions(), cancellationToken)
+      .ConfigureAwait(false);
   }
 
   /// <summary>Deletes a session by its unique identifier.</summary>
   public async Task DeleteAsync(string id, CancellationToken cancellationToken)
   {
-    _ = await _context.Sessions.DeleteOneAsync(s => s.Id == id, cancellationToken).ConfigureAwait(false);
+    _ = await _context.Sessions
+      .DeleteOneAsync(s => s.Id == id, cancellationToken)
+      .ConfigureAwait(false);
   }
 
   /// <summary>Deletes all sessions for a given user.</summary>
   public async Task DeleteByUserIdAsync(string userId, CancellationToken cancellationToken)
   {
-    _ = await _context.Sessions.DeleteManyAsync(s => s.UserId == userId, cancellationToken).ConfigureAwait(false);
+    _ = await _context.Sessions
+      .DeleteManyAsync(s => s.UserId == userId, cancellationToken)
+      .ConfigureAwait(false);
   }
 }

src/ParagonPlayground/backend/src/ParagonPlayground.Infrastructure/Data/StorageItemRepository.cs

@@ -0,0 +1,51 @@
+using MongoDB.Driver;
+
+using ParagonPlayground.Domain.Entities;
+
+namespace ParagonPlayground.Infrastructure.Data;
+
+/// <summary>Repository for storage item (file/folder) data access.</summary>
+public class StorageItemRepository(MongoDbContext context)
+{
+  private readonly MongoDbContext _context = context;
+
+  /// <summary>Lists items in a folder (or root items when parentId is null).</summary>
+  public async Task<List<StorageItem>> GetByParentIdAsync(
+    string organizationId, string? parentId, CancellationToken ct)
+  {
+    var filter = Builders<StorageItem>.Filter.Eq(i => i.OrganizationId, organizationId)
+      & Builders<StorageItem>.Filter.Eq(i => i.ParentId, parentId);
+
+    return await _context.StorageItems.Find(filter)
+      .SortByDescending(i => i.IsFolder)
+      .ThenBy(i => i.Name)
+      .ToListAsync(ct)
+      .ConfigureAwait(false);
+  }
+
+  /// <summary>Finds a storage item by ID.</summary>
+  public async Task<StorageItem?> GetByIdAsync(string id, CancellationToken ct)
+  {
+    return await _context.StorageItems.Find(i => i.Id == id)
+      .FirstOrDefaultAsync(ct)
+      .ConfigureAwait(false);
+  }
+
+  /// <summary>Creates a new storage item.</summary>
+  public async Task CreateAsync(StorageItem item, CancellationToken ct)
+  {
+    ArgumentNullException.ThrowIfNull(item);
+
+    await _context.StorageItems
+      .InsertOneAsync(item, cancellationToken: ct)
+      .ConfigureAwait(false);
+  }
+
+  /// <summary>Deletes a storage item by ID.</summary>
+  public async Task DeleteAsync(string id, CancellationToken ct)
+  {
+    _ = await _context.StorageItems
+      .DeleteOneAsync(i => i.Id == id, ct)
+      .ConfigureAwait(false);
+  }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Infrastructure/Data/UserCredentialRepository.cs

@@ -0,0 +1,64 @@
+using MongoDB.Driver;
+
+using ParagonPlayground.Domain.Entities;
+
+namespace ParagonPlayground.Infrastructure.Data;
+
+/// <summary>Repository for user credential data access.</summary>
+public class UserCredentialRepository(MongoDbContext context)
+{
+  private readonly MongoDbContext _context = context;
+
+  /// <summary>Finds all credentials for a given user.</summary>
+  public async Task<List<UserCredential>> GetByUserIdAsync(string userId, CancellationToken ct)
+  {
+    return await _context.UserCredentials
+      .Find(c => c.UserId == userId)
+      .ToListAsync(ct)
+      .ConfigureAwait(false);
+  }
+
+  /// <summary>Finds all credentials for a given organization.</summary>
+  public async Task<List<UserCredential>> GetByOrganizationIdAsync(string organizationId, CancellationToken ct)
+  {
+    return await _context.UserCredentials
+      .Find(c => c.OrganizationId == organizationId)
+      .ToListAsync(ct)
+      .ConfigureAwait(false);
+  }
+
+  /// <summary>Stores a new credential mapping.</summary>
+  public async Task CreateAsync(UserCredential credential, CancellationToken ct)
+  {
+    ArgumentNullException.ThrowIfNull(credential);
+
+    await _context.UserCredentials
+      .InsertOneAsync(credential, cancellationToken: ct)
+      .ConfigureAwait(false);
+  }
+
+  /// <summary>Deletes all credentials for a given organization.</summary>
+  public async Task<long> DeleteByOrganizationIdAsync(string organizationId, CancellationToken ct)
+  {
+    var result = await _context.UserCredentials
+      .DeleteManyAsync(c => c.OrganizationId == organizationId, ct)
+      .ConfigureAwait(false);
+
+    return result.DeletedCount;
+  }
+
+  /// <summary>Deletes a credential by its Paragon credential ID for a given user.</summary>
+  public async Task<bool> DeleteByCredentialIdAsync(string credentialId, string userId, CancellationToken ct)
+  {
+    var filter = Builders<UserCredential>.Filter.And(
+      Builders<UserCredential>.Filter.Eq(c => c.CredentialId, credentialId),
+      Builders<UserCredential>.Filter.Eq(c => c.UserId, userId)
+    );
+
+    var result = await _context.UserCredentials
+      .DeleteOneAsync(filter, ct)
+      .ConfigureAwait(false);
+
+    return result.DeletedCount > 0;
+  }
+}

src/ParagonPlayground/backend/src/ParagonPlayground.Infrastructure/Data/UserRepository.cs

@@ -18,12 +18,27 @@ public class UserRepository(MongoDbContext context)
   /// <summary>Finds a user by their unique identifier.</summary>
   public async Task<User?> GetByIdAsync(string id, CancellationToken cancellationToken)
   {
-    return await _context.Users.Find(u => u.Id == id).FirstOrDefaultAsync(cancellationToken).ConfigureAwait(false);
+    return await _context.Users
+      .Find(u => u.Id == id)
+      .FirstOrDefaultAsync(cancellationToken)
+      .ConfigureAwait(false);
   }
 
   /// <summary>Creates a new user in the database.</summary>
   public async Task CreateAsync(User user, CancellationToken cancellationToken)
   {
-    await _context.Users.InsertOneAsync(user, new InsertOneOptions(), cancellationToken).ConfigureAwait(false);
+    await _context.Users
+      .InsertOneAsync(user, new InsertOneOptions(), cancellationToken)
+      .ConfigureAwait(false);
+  }
+
+  /// <summary>Replaces an existing user document.</summary>
+  public async Task ReplaceAsync(User user, CancellationToken cancellationToken)
+  {
+    ArgumentNullException.ThrowIfNull(user);
+
+    _ = await _context.Users
+      .ReplaceOneAsync(u => u.Id == user.Id, user, cancellationToken: cancellationToken)
+      .ConfigureAwait(false);
   }
 }

src/ParagonPlayground/docker-compose.debug.yml

@@ -0,0 +1,52 @@
+services:
+  mongodb:
+    image: mongo:7
+    ports:
+      - "27017:27017"
+    volumes:
+      - mongo_data:/data/db
+    healthcheck:
+      test: echo 'db.runCommand("ping").ok' | mongosh --quiet
+      interval: 10s
+      retries: 5
+      start_period: 20s
+  backend:
+    container_name: paragonplayground-backend
+    build:
+      context: ./backend
+      dockerfile: Dockerfile
+      target: debug
+    ports:
+      - "5000:8080"
+    environment:
+      - MongoDb__ConnectionString=mongodb://mongodb:27017
+      - MongoDb__DatabaseName=paragon_playground
+      - ASPNETCORE_ENVIRONMENT=Development
+      - ASPNETCORE_URLS=http://+:8080
+    depends_on:
+      mongodb:
+        condition: service_healthy
+  frontend:
+    container_name: paragonplayground-frontend
+    build:
+      context: ./frontend
+      dockerfile: Dockerfile
+    ports:
+      - "3000:3000"
+    volumes:
+      - ./frontend/src:/app/src
+    depends_on:
+      - backend
+  nginx:
+    image: nginx:alpine
+    ports:
+      - "80:80"
+      - "443:443"
+    volumes:
+      - ./nginx/nginx.conf:/etc/nginx/conf.d/default.conf
+      - ./certs:/etc/nginx/certs
+    depends_on:
+      - backend
+      - frontend
+volumes:
+  mongo_data:

src/ParagonPlayground/docker-compose.dev.yml

@@ -15,8 +15,11 @@ services:
     build:
       context: ./backend
       dockerfile: Dockerfile
+      target: development
     ports:
       - "5000:8080"
+    volumes:
+      - ./backend:/src
     environment:
       - MongoDb__ConnectionString=mongodb://mongodb:27017
       - MongoDb__DatabaseName=paragon_playground

src/ParagonPlayground/frontend/.prettierrc

@@ -1,8 +1,12 @@
 {
-  "semi": false,
+  "semi": true,
   "singleQuote": true,
   "trailingComma": "all",
   "printWidth": 100,
   "tabWidth": 2,
-  "arrowParens": "always"
+  "arrowParens": "always",
+  "bracketSpacing": true,
+  "vueIndentScriptAndStyle": true,
+  "endOfLine": "auto",
+  "singleAttributePerLine": true
 }

src/ParagonPlayground/frontend/eslint.config.js

@@ -1,7 +1,8 @@
-import js from '@eslint/js'
+import js from '@eslint/js';
-import tseslint from 'typescript-eslint'
+import tseslint from 'typescript-eslint';
-import pluginVue from 'eslint-plugin-vue'
+import pluginVue from 'eslint-plugin-vue';
-import prettier from 'eslint-config-prettier'
+import prettier from 'eslint-config-prettier';
+import globals from 'globals';
 
 export default tseslint.config(
   js.configs.recommended,
@@ -13,10 +14,21 @@ export default tseslint.config(
       parserOptions: {
         parser: tseslint.parser,
       },
+      globals: {
+        ...globals.browser,
+      },
+    },
+  },
+  {
+    files: ['*.ts', '**/*.ts'],
+    languageOptions: {
+      globals: {
+        ...globals.browser,
+      },
     },
   },
   prettier,
   {
     ignores: ['dist/', 'node_modules/'],
   },
-)
+);

src/ParagonPlayground/frontend/index.html

@@ -2,11 +2,17 @@
 <html lang="en">
   <head>
     <meta charset="UTF-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta
+      name="viewport"
+      content="width=device-width, initial-scale=1.0"
+    />
     <title>paragon-playground</title>
   </head>
   <body>
     <div id="app"></div>
-    <script type="module" src="/src/main.ts"></script>
+    <script
+      type="module"
+      src="/src/main.ts"
+    ></script>
   </body>
 </html>

src/ParagonPlayground/frontend/package.json

@@ -12,6 +12,7 @@
     "format": "prettier --write ."
   },
   "dependencies": {
+    "@useparagon/connect": "^2.5.0",
     "vue": "^3.5.39",
     "vue-router": "^4.6.4"
   },
@@ -23,10 +24,12 @@
     "eslint": "^10.8.0",
     "eslint-config-prettier": "^10.1.8",
     "eslint-plugin-vue": "^10.10.0",
+    "globals": "^17.8.0",
     "prettier": "^3.9.6",
     "typescript": "~6.0.2",
     "typescript-eslint": "^8.65.0",
     "vite": "^8.1.1",
+    "vite-plugin-vue-devtools": "^8.2.1",
     "vue-tsc": "^3.3.5"
   }
 }

src/ParagonPlayground/frontend/src/App.vue

@@ -1,6 +1,111 @@
 <script setup lang="ts">
+  import { computed, onMounted } from 'vue';
+  import { useRoute, useRouter } from 'vue-router';
+  import { useCurrentUser } from './composables/useCurrentUser';
+  import { logout } from './services/auth';
+
+  const route = useRoute();
+  const router = useRouter();
+  const { currentUser, fetchCurrentUser, clearCurrentUser } = useCurrentUser();
+
+  const showNav = computed(() => route.meta.public !== true);
+
+  const isActive = (name: string) => route.name === name;
+
+  onMounted(async () => {
+    if (!currentUser.value) {
+      await fetchCurrentUser();
+    }
+  });
+
+  async function handleLogout() {
+    await logout();
+    clearCurrentUser();
+    router.push('/login');
+  }
 </script>
 
 <template>
+  <div class="app-shell">
+    <nav
+      v-if="showNav"
+      class="app-nav"
+    >
+      <span class="app-brand">Paragon Playground</span>
+      <div class="nav-links">
+        <router-link
+          to="/"
+          :class="{ active: isActive('dashboard') }"
+        >
+          Dashboard
+        </router-link>
+        <router-link
+          to="/settings"
+          :class="{ active: isActive('settings') }"
+        >
+          Settings
+        </router-link>
+        <router-link
+          v-if="currentUser?.role === 'admin'"
+          to="/integrations"
+          :class="{ active: isActive('integrations') }"
+        >
+          Integrations
+        </router-link>
+      </div>
+      <button
+        class="btn"
+        @click="handleLogout"
+      >
+        Sign out
+      </button>
+    </nav>
+
     <router-view />
+  </div>
 </template>
+
+<style scoped>
+  .app-nav {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    gap: 1rem;
+    height: 3.25rem;
+    padding: 0 1rem;
+    border-bottom: 1px solid var(--color-border);
+    background: var(--color-bg);
+  }
+
+  .app-brand {
+    font-weight: 650;
+    font-size: var(--text-sm);
+    letter-spacing: 0.01em;
+    color: var(--color-accent-strong);
+  }
+
+  .app-nav .nav-links {
+    height: 100%;
+    gap: 1.25rem;
+  }
+
+  .app-nav .nav-links a {
+    display: inline-flex;
+    align-items: center;
+    height: 100%;
+    padding: 0 0.125rem;
+    border-bottom: 2px solid transparent;
+    color: var(--color-text-secondary);
+    transition: color 0.12s;
+  }
+
+  .app-nav .nav-links a:hover {
+    color: var(--color-text);
+  }
+
+  .app-nav .nav-links a.active {
+    color: var(--color-accent);
+    border-bottom-color: var(--color-accent);
+    font-weight: 600;
+  }
+</style>

src/ParagonPlayground/frontend/src/components/AppIcon.vue

@@ -0,0 +1,53 @@
+<script setup lang="ts">
+  type IconName =
+    | 'folder'
+    | 'file'
+    | 'upload'
+    | 'download'
+    | 'external'
+    | 'trash'
+    | 'x'
+    | 'plus';
+
+  const props = withDefaults(defineProps<{ name: IconName; size?: number }>(), {
+    size: 16,
+  });
+
+  const paths: Record<IconName, string[]> = {
+    folder: [
+      'M20 20a2 2 0 0 0 2-2V8a2 2 0 0 0-2-2h-7.9a2 2 0 0 1-1.69-.9L9.6 3.9A2 2 0 0 0 7.93 3H4a2 2 0 0 0-2 2v13a2 2 0 0 0 2 2Z',
+    ],
+    file: ['M15 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V7Z', 'M14 2v4a2 2 0 0 0 2 2h4'],
+    upload: ['M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4', 'M17 8l-5-5-5 5', 'M12 3v12'],
+    download: ['M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4', 'M7 10l5 5 5-5', 'M12 15V3'],
+    external: ['M15 3h6v6', 'M10 14 21 3', 'M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6'],
+    trash: [
+      'M3 6h18',
+      'M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6',
+      'M8 6V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2',
+    ],
+    x: ['M18 6 6 18', 'm6 6 12 12'],
+    plus: ['M5 12h14', 'M12 5v14'],
+  };
+</script>
+
+<template>
+  <svg
+    xmlns="http://www.w3.org/2000/svg"
+    viewBox="0 0 24 24"
+    :width="size"
+    :height="size"
+    fill="none"
+    stroke="currentColor"
+    stroke-width="1.75"
+    stroke-linecap="round"
+    stroke-linejoin="round"
+    aria-hidden="true"
+  >
+    <path
+      v-for="(d, i) in paths[props.name]"
+      :key="i"
+      :d="d"
+    />
+  </svg>
+</template>

src/ParagonPlayground/frontend/src/composables/useCurrentUser.ts

@@ -0,0 +1,22 @@
+import { ref } from 'vue';
+import { me, type UserResponse } from '../services/auth';
+
+const currentUser = ref<UserResponse | null>(null);
+
+export function useCurrentUser() {
+  async function fetchCurrentUser(): Promise<UserResponse | null> {
+    try {
+      currentUser.value = await me();
+    } catch {
+      currentUser.value = null;
+    }
+
+    return currentUser.value;
+  }
+
+  function clearCurrentUser() {
+    currentUser.value = null;
+  }
+
+  return { currentUser, fetchCurrentUser, clearCurrentUser };
+}

src/ParagonPlayground/frontend/src/main.ts

@@ -2,6 +2,9 @@ import { createApp } from 'vue';
 import App from './App.vue';
 import router from './router';
 
+import './styles/tokens.css';
+import './styles/main.css';
+
 const app = createApp(App);
 app.use(router);
 app.mount('#app');

src/ParagonPlayground/frontend/src/router/index.ts

@@ -1,28 +1,90 @@
 import { createRouter, createWebHistory } from 'vue-router';
 import LoginPage from '../views/LoginPage.vue';
 import DashboardPage from '../views/DashboardPage.vue';
-import { me } from '../services/auth';
+import IntegrationsPage from '../views/IntegrationsPage.vue';
+import FileExplorerPage from '../views/FileExplorerPage.vue';
+import SettingsPage from '../views/SettingsPage.vue';
+import ErrorPage from '../views/ErrorPage.vue';
+import { useCurrentUser } from '../composables/useCurrentUser';
 
 const router = createRouter({
   history: createWebHistory(),
   routes: [
-    { path: '/login', name: 'login', component: LoginPage },
+    {
+      path: '/login',
+      name: 'login',
+      component: LoginPage,
+      meta: { public: true },
+    },
     {
       path: '/',
       name: 'dashboard',
       component: DashboardPage,
       meta: { requiresAuth: true },
     },
+    {
+      path: '/integrations',
+      name: 'integrations',
+      component: IntegrationsPage,
+      meta: { requiresAuth: true, requiresAdmin: true },
+    },
+    {
+      path: '/settings',
+      name: 'settings',
+      component: SettingsPage,
+      meta: { requiresAuth: true },
+    },
+    {
+      path: '/files/:pathMatch(.*)*',
+      name: 'files',
+      component: FileExplorerPage,
+      meta: { requiresAuth: true },
+    },
+    {
+      path: '/forbidden',
+      name: 'forbidden',
+      component: ErrorPage,
+      props: {
+        status: '403',
+        heading: 'Forbidden',
+        title: "You don't have access to this area",
+        message:
+          "Your account doesn't have permission to view this page. Contact your admin if you believe this is a mistake.",
+      },
+      meta: { requiresAuth: true },
+    },
+    {
+      path: '/:pathMatch(.*)*',
+      name: 'not-found',
+      component: ErrorPage,
+      props: {
+        status: '404',
+        heading: 'Page Not Found',
+        title: "We couldn't find that page",
+        message: 'The URL may be incorrect, or the page may have been moved or removed.',
+      },
+      meta: { requiresAuth: true },
+    },
   ],
 });
 
 router.beforeEach(async (to) => {
-  if (to.meta.requiresAuth) {
+  const { currentUser, fetchCurrentUser } = useCurrentUser();
-    try {
+
-      await me();
+  if (currentUser.value === null) {
-    } catch {
+    await fetchCurrentUser();
+  }
+
+  if (to.meta.public) {
+    return currentUser.value ? { name: 'dashboard' } : true;
+  }
+
+  if (currentUser.value === null) {
     return { name: 'login' };
   }
+
+  if (to.meta.requiresAdmin && currentUser.value.role !== 'admin') {
+    return { name: 'forbidden' };
   }
 });
 

src/ParagonPlayground/frontend/src/services/api.ts

@@ -23,8 +23,8 @@ export async function api<T>(path: string, init?: RequestInit): Promise<T> {
   });
 
   if (!res.ok) {
-    const body = await res.json().catch(() => ({ error: res.statusText }));
+    const body = await res.json().catch(() => ({}));
-    throw new Error(body.error ?? `HTTP ${res.status}`);
+    throw new Error(body.detail ?? body.title ?? res.statusText);
   }
 
   if (res.status === 204) {

src/ParagonPlayground/frontend/src/services/auth.ts

@@ -4,6 +4,7 @@ export interface UserResponse {
   id: string;
   email: string;
   displayName: string;
+  role: string;
   organizationId: string;
   organizationName: string;
   organizationSlug: string;

src/ParagonPlayground/frontend/src/services/integration.ts

@@ -0,0 +1,76 @@
+import { api } from './api';
+
+export interface ParagonTokenResponse {
+  paragonJwt: string;
+  projectId: string;
+}
+
+export interface IntegrationConfig {
+  id: string;
+  organizationId: string;
+  connectionMode: string;
+  sharePointSiteUrl: string | null;
+  sharePointSiteId: string | null;
+  sharePointFolderPath: string | null;
+  updatedAt: string;
+}
+
+export interface IntegrationConfigRequest {
+  connectionMode: string;
+  sharePointSiteUrl: string | null;
+  sharePointFolderPath: string | null;
+}
+
+export interface CredentialResponse {
+  id: string;
+  credentialId: string;
+  integrationType: string;
+  connectedAt: string;
+}
+
+export interface CredentialRequest {
+  credentialId: string;
+  integrationType: string;
+}
+
+export async function getParagonToken(): Promise<ParagonTokenResponse> {
+  return api<ParagonTokenResponse>('/paragon/token');
+}
+
+export async function getConfig(): Promise<IntegrationConfig> {
+  return api<IntegrationConfig>('/integration/config');
+}
+
+export async function updateConfig(config: IntegrationConfigRequest): Promise<IntegrationConfig> {
+  return api<IntegrationConfig>('/integration/config', {
+    method: 'PUT',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify(config),
+  });
+}
+
+export async function getCredentials(): Promise<CredentialResponse[]> {
+  return api<CredentialResponse[]>('/integration/credentials');
+}
+
+export async function getOrgCredentials(): Promise<CredentialResponse[]> {
+  return api<CredentialResponse[]>('/integration/credentials/org');
+}
+
+export async function saveCredential(req: CredentialRequest): Promise<CredentialResponse> {
+  return api<CredentialResponse>('/integration/credentials', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify(req),
+  });
+}
+
+export async function deleteCredential(credentialId: string): Promise<void> {
+  await api<void>(`/integration/credentials/${encodeURIComponent(credentialId)}`, {
+    method: 'DELETE',
+  });
+}
+
+export async function purgeOrgCredentials(): Promise<void> {
+  await api<void>('/integration/credentials/org', { method: 'DELETE' });
+}

src/ParagonPlayground/frontend/src/services/storage.ts

@@ -0,0 +1,60 @@
+import { api } from './api';
+
+export interface StorageItem {
+  id: string;
+  name: string;
+  isFolder: boolean;
+  parentId: string | null;
+  contentType: string | null;
+  fileSize: number;
+  sharePointWebUrl: string | null;
+  createdByUserId: string;
+  createdByDisplayName: string;
+  createdAt: string;
+}
+
+export interface CreateFolderRequest {
+  name: string;
+  parentId: string | null;
+}
+
+export interface DownloadResponse {
+  sharePointUrl: string | null;
+  proxyUrl: string | null;
+}
+
+export async function getItems(parentId?: string | null): Promise<StorageItem[]> {
+  const params = parentId ? `?parentId=${encodeURIComponent(parentId)}` : '';
+  return api<StorageItem[]>(`/storage${params}`);
+}
+
+export async function createFolder(req: CreateFolderRequest): Promise<StorageItem> {
+  return api<StorageItem>('/storage/folders', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify(req),
+  });
+}
+
+export async function uploadFile(file: File, parentId?: string | null): Promise<StorageItem> {
+  const form = new FormData();
+  form.append('file', file);
+  if (parentId) {
+    form.append('parentId', parentId);
+  }
+
+  return api<StorageItem>('/storage/files', {
+    method: 'POST',
+    body: form,
+  });
+}
+
+export async function deleteItem(id: string): Promise<void> {
+  await api<void>(`/storage/${encodeURIComponent(id)}`, {
+    method: 'DELETE',
+  });
+}
+
+export async function getDownloadUrls(id: string): Promise<DownloadResponse> {
+  return api<DownloadResponse>(`/storage/${encodeURIComponent(id)}/download`);
+}

src/ParagonPlayground/frontend/src/styles/main.css

@@ -0,0 +1,244 @@
+* {
+  box-sizing: border-box;
+}
+
+:focus-visible {
+  outline: 2px solid var(--color-accent);
+  outline-offset: 2px;
+}
+
+body {
+  margin: 0;
+  background: var(--color-bg);
+  color: var(--color-text);
+  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
+  font-size: var(--text-base);
+  line-height: var(--leading-normal);
+}
+
+h1,
+h2,
+h3 {
+  line-height: var(--leading-tight);
+}
+
+h1 {
+  font-size: var(--text-xl);
+  font-weight: 650;
+}
+
+h2 {
+  font-size: var(--text-lg);
+  font-weight: 650;
+}
+
+h3 {
+  font-size: var(--text-base);
+  font-weight: 600;
+}
+
+input,
+select,
+button {
+  font: inherit;
+}
+
+input,
+select {
+  padding: 0.5rem 0.625rem;
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius);
+  font-size: var(--text-sm);
+  background: var(--color-surface);
+  color: var(--color-text);
+}
+
+input:focus,
+select:focus {
+  border-color: var(--color-accent);
+}
+
+.page {
+  max-width: 800px;
+  margin: 0 auto;
+  padding: 1.5rem 1rem 3rem;
+}
+
+.page-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: baseline;
+  gap: 1rem;
+  margin-bottom: 1.5rem;
+}
+
+.page-header h1 {
+  margin: 0;
+  color: var(--color-accent-strong);
+}
+
+.section {
+  border-top: 1px solid var(--color-border);
+  padding: 1.25rem 0;
+}
+
+.section h2 {
+  margin: 0 0 0.5rem;
+}
+
+.nav-links {
+  display: flex;
+  align-items: center;
+  gap: 1rem;
+}
+
+.nav-links a {
+  color: var(--color-text-secondary);
+  text-decoration: none;
+  font-size: var(--text-sm);
+}
+
+.btn {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.375rem;
+  padding: 0.5rem 0.875rem;
+  border-radius: var(--radius);
+  font-size: var(--text-sm);
+  font-weight: 500;
+  cursor: pointer;
+  border: 1px solid var(--color-border);
+  background: var(--color-surface);
+  color: var(--color-text);
+  transition:
+    background-color 0.12s,
+    border-color 0.12s,
+    color 0.12s;
+}
+
+.btn:hover:not(:disabled) {
+  background: var(--color-surface-subtle);
+}
+
+.btn:active:not(:disabled) {
+  transform: translateY(1px);
+}
+
+.btn:disabled {
+  opacity: 0.55;
+  cursor: not-allowed;
+}
+
+.btn-primary {
+  background: var(--color-accent);
+  color: var(--color-on-accent);
+  border-color: transparent;
+}
+
+.btn-primary:hover:not(:disabled) {
+  background: var(--color-accent-strong);
+}
+
+.btn-secondary {
+  border-color: var(--color-accent);
+  color: var(--color-accent);
+}
+
+.btn-secondary:hover:not(:disabled) {
+  background: var(--color-accent-soft);
+}
+
+.btn-danger {
+  background: var(--color-danger);
+  color: var(--color-on-danger);
+  border-color: transparent;
+}
+
+.btn-small {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  padding: 0.25rem 0.5rem;
+  border-radius: var(--radius);
+  font-size: var(--text-xs);
+  cursor: pointer;
+  border: 1px solid var(--color-border);
+  background: var(--color-surface);
+  color: var(--color-text-secondary);
+  transition:
+    background-color 0.12s,
+    color 0.12s,
+    border-color 0.12s;
+}
+
+.btn-small:hover:not(:disabled) {
+  background: var(--color-surface-subtle);
+  color: var(--color-accent);
+  border-color: var(--color-accent);
+}
+
+.btn-small:disabled {
+  opacity: 0.55;
+  cursor: not-allowed;
+}
+
+.btn-small-danger {
+  background: var(--color-danger-soft);
+  color: var(--color-danger);
+  border-color: transparent;
+}
+
+.btn-small-danger:hover:not(:disabled) {
+  background: var(--color-danger);
+  color: var(--color-on-danger);
+  border-color: transparent;
+}
+
+.alert {
+  padding: 0.625rem 0.875rem;
+  border-left: 3px solid var(--color-border);
+  margin-bottom: 1rem;
+  font-size: var(--text-sm);
+}
+
+.alert.error {
+  background: var(--color-danger-soft);
+  color: var(--color-danger);
+  border-left-color: var(--color-danger);
+}
+
+.alert.success {
+  background: var(--color-success-soft);
+  color: var(--color-success);
+  border-left-color: var(--color-success);
+}
+
+.alert.warning {
+  background: var(--color-warning-soft);
+  color: var(--color-warning);
+  border-left-color: var(--color-warning);
+}
+
+.loading {
+  text-align: center;
+  color: var(--color-text-secondary);
+  padding: 3rem 1rem;
+  font-size: var(--text-sm);
+}
+
+.empty {
+  text-align: center;
+  color: var(--color-text-muted);
+  padding: 3rem 1rem;
+  font-size: var(--text-sm);
+}
+
+.help-text {
+  color: var(--color-text-secondary);
+  font-size: var(--text-sm);
+  margin: 0 0 1rem;
+}
+
+.text-muted {
+  color: var(--color-text-muted);
+}

src/ParagonPlayground/frontend/src/styles/tokens.css

@@ -0,0 +1,62 @@
+:root {
+  --color-bg: #ffffff;
+  --color-surface: #ffffff;
+  --color-surface-subtle: #fafafa;
+
+  --color-text: #1b1c1f;
+  --color-text-secondary: #5b5d63;
+  --color-text-muted: #90939b;
+
+  --color-border: #e2e3e7;
+
+  --color-accent: #b39cd0;
+  --color-accent-strong: #a088c0;
+  --color-accent-soft: rgba(179, 156, 208, 0.15);
+  --color-on-accent: #1b1c1f;
+
+  --color-danger: #d47373;
+  --color-danger-soft: rgba(212, 115, 115, 0.15);
+  --color-on-danger: #1b1c1f;
+  --color-success: #7ec8c0;
+  --color-success-soft: rgba(126, 200, 192, 0.15);
+  --color-warning: #cc6b2c;
+  --color-warning-soft: rgba(204, 107, 44, 0.15);
+
+  --radius: 0.375rem;
+
+  --text-xs: 0.75rem;
+  --text-sm: 0.875rem;
+  --text-base: 1rem;
+  --text-lg: 1.125rem;
+  --text-xl: 1.375rem;
+
+  --leading-tight: 1.3;
+  --leading-normal: 1.5;
+}
+
+@media (prefers-color-scheme: dark) {
+  :root {
+    --color-bg: #161718;
+    --color-surface: #1c1d1f;
+    --color-surface-subtle: #222326;
+
+    --color-text: #e7e5ef;
+    --color-text-secondary: #a5a3b3;
+    --color-text-muted: #7a7891;
+
+    --color-border: #2e2b3d;
+
+    --color-accent: #b39cd0;
+    --color-accent-strong: #a088c0;
+    --color-accent-soft: rgba(179, 156, 208, 0.18);
+    --color-on-accent: #171622;
+
+    --color-danger: #d47373;
+    --color-danger-soft: rgba(212, 115, 115, 0.15);
+    --color-on-danger: #171622;
+    --color-success: #7ec8c0;
+    --color-success-soft: rgba(126, 200, 192, 0.15);
+    --color-warning: #cc6b2c;
+    --color-warning-soft: rgba(204, 107, 44, 0.15);
+  }
+}

src/ParagonPlayground/frontend/src/utils/utils.ts

@@ -0,0 +1,18 @@
+export function formatLocaleDate(iso: string): string {
+  return new Date(iso).toLocaleDateString(undefined, {
+    year: 'numeric',
+    month: 'short',
+    day: 'numeric',
+  });
+}
+
+export function formatLocaleDateWithTime(iso: string): string {
+  return new Date(iso).toLocaleDateString(undefined, {
+    year: 'numeric',
+    month: 'short',
+    day: 'numeric',
+    hour: '2-digit',
+    minute: '2-digit',
+  });
+}
+

src/ParagonPlayground/frontend/src/views/DashboardPage.vue

@@ -1,108 +1,93 @@
 <script setup lang="ts">
   import { ref, onMounted } from 'vue';
-import { useRouter } from 'vue-router';
+  import { me, type UserResponse } from '../services/auth';
-import { me, logout, type UserResponse } from '../services/auth';
 
-const router = useRouter();
   const user = ref<UserResponse | null>(null);
 
   onMounted(async () => {
     user.value = await me();
   });
-
-async function handleLogout() {
-  await logout();
-  router.push('/login');
-}
 </script>
 
 <template>
-  <div class="dashboard">
+  <div class="page">
-    <header>
+    <header class="page-header">
       <h1>Paragon Playground</h1>
-      <button class="logout" @click="handleLogout">Sign out</button>
     </header>
 
     <main v-if="user">
-      <section class="card">
+      <section class="section">
         <h2>Welcome, {{ user.displayName }}</h2>
         <dl>
           <dt>Email</dt>
           <dd>{{ user.email }}</dd>
           <dt>Organization</dt>
           <dd>{{ user.organizationName }} ({{ user.organizationSlug }})</dd>
+          <dt>Role</dt>
+          <dd>{{ user.role }}</dd>
         </dl>
       </section>
 
-      <section class="card">
+      <section class="section">
-        <h2>Next Steps</h2>
+        <h2>Examples</h2>
-        <p>This harness is for Paragon integration exploration.</p>
+        <div class="actions">
+          <router-link
+            to="/files"
+            class="action-card"
+          >
+            <h3>File Explorer</h3>
+            <p>Browse, upload, and manage files</p>
+          </router-link>
+        </div>
       </section>
     </main>
   </div>
 </template>
 
 <style scoped>
-.dashboard {
+  .actions {
-  max-width: 800px;
+    display: grid;
-  margin: 0 auto;
+    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
-  padding: 1rem;
+    gap: 0.75rem;
+    margin-top: 0.75rem;
   }
 
-header {
+  .action-card {
-  display: flex;
+    display: block;
-  justify-content: space-between;
+    text-decoration: none;
-  align-items: center;
+    color: inherit;
-  margin-bottom: 2rem;
+    border: 1px solid var(--color-border);
+    border-radius: var(--radius);
+    padding: 1rem 1.125rem;
+    transition:
+      border-color 0.12s,
+      background-color 0.12s;
   }
 
-header h1 {
+  .action-card:hover {
-  font-size: 1.25rem;
+    border-color: var(--color-accent);
+    background: var(--color-surface-subtle);
   }
 
-.logout {
+  .action-card h3 {
-  padding: 0.5rem 1rem;
+    margin: 0 0 0.25rem;
-  background: none;
-  border: 1px solid #ccc;
-  border-radius: 4px;
-  cursor: pointer;
   }
 
-.card {
+  .action-card p {
-  background: white;
+    margin: 0;
-  padding: 1.5rem;
+    font-size: var(--text-sm);
-  border-radius: 8px;
+    color: var(--color-text-secondary);
-  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
-  margin-bottom: 1rem;
-}
-
-.card h2 {
-  margin: 0 0 1rem;
-  font-size: 1.1rem;
   }
 
   dl dt {
     font-weight: 600;
     margin-top: 0.5rem;
-  color: #555;
+    color: var(--color-text-secondary);
+    font-size: var(--text-sm);
   }
 
   dl dd {
     margin: 0 0 0.5rem;
-}
+    font-size: var(--text-sm);
-
-code {
-  background: #f0f0f0;
-  padding: 0.1rem 0.3rem;
-  border-radius: 3px;
-  font-size: 0.9rem;
-}
-
-ul {
-  padding-left: 1.25rem;
-}
-
-li {
-  margin-bottom: 0.5rem;
   }
 </style>

src/ParagonPlayground/frontend/src/views/ErrorPage.vue

@@ -0,0 +1,47 @@
+<script setup lang="ts">
+  import { useRouter } from 'vue-router';
+
+  defineProps<{
+    status: string;
+    heading: string;
+    title: string;
+    message: string;
+  }>();
+
+  const router = useRouter();
+</script>
+
+<template>
+  <div class="page">
+    <header class="page-header">
+      <h1>{{ heading }}</h1>
+    </header>
+
+    <section class="section">
+      <p class="status-eyebrow">{{ status }}</p>
+      <h2>{{ title }}</h2>
+      <p class="help-text">{{ message }}</p>
+      <button
+        class="btn btn-primary"
+        @click="router.push('/')"
+      >
+        Back to Dashboard
+      </button>
+    </section>
+  </div>
+</template>
+
+<style scoped>
+  .status-eyebrow {
+    margin: 0 0 0.25rem;
+    font-size: var(--text-xs);
+    font-weight: 600;
+    letter-spacing: 0.08em;
+    text-transform: uppercase;
+    color: var(--color-accent);
+  }
+
+  h2 {
+    margin: 0 0 0.75rem;
+  }
+</style>

src/ParagonPlayground/frontend/src/views/FileExplorerPage.vue

@@ -0,0 +1,490 @@
+<script setup lang="ts">
+  import { ref, onMounted, computed, watch } from 'vue';
+  import { useRoute, useRouter } from 'vue-router';
+  import AppIcon from '../components/AppIcon.vue';
+  import {
+    getItems,
+    createFolder,
+    uploadFile,
+    deleteItem,
+    getDownloadUrls,
+    type StorageItem,
+  } from '../services/storage';
+import { formatLocaleDate } from '../utils/utils';
+
+  const route = useRoute();
+  const router = useRouter();
+
+  const items = ref<StorageItem[]>([]);
+  const loading = ref(true);
+  const error = ref('');
+  const currentFolderId = ref<string | null>(null);
+  const breadcrumbs = ref<{ id: string | null; name: string }[]>([]);
+  const showNewFolder = ref(false);
+  const newFolderName = ref('');
+
+  const folders = computed(() => items.value.filter((i) => i.isFolder));
+  const files = computed(() => items.value.filter((i) => !i.isFolder));
+
+  const pathSegments = computed(() => {
+    const raw = route.params.pathMatch;
+
+    if (!raw) {
+      return [];
+    }
+
+    return (Array.isArray(raw) ? raw : [raw]).filter(Boolean);
+  });
+
+  onMounted(() => {
+    navigateToPath(pathSegments.value);
+  });
+
+  watch(pathSegments, (newPath) => {
+    navigateToPath(newPath);
+  });
+
+  async function navigateToPath(segments: string[]) {
+    loading.value = true;
+    error.value = '';
+
+    try {
+      let parentId: string | null = null;
+      const crumbs: { id: string | null; name: string }[] = [];
+
+      for (const name of segments) {
+        const children = await getItems(parentId);
+        const folder = children.find((i) => i.isFolder && i.name === name);
+
+        if (!folder) {
+          error.value = `Folder "${name}" not found`;
+          items.value = [];
+          return;
+        }
+
+        crumbs.push({ id: folder.id, name: folder.name });
+        parentId = folder.id;
+      }
+
+      currentFolderId.value = parentId;
+      breadcrumbs.value = crumbs;
+
+      items.value = await getItems(currentFolderId.value);
+    } catch (e: unknown) {
+      error.value = e instanceof Error ? e.message : 'Failed to navigate';
+      items.value = [];
+    } finally {
+      loading.value = false;
+    }
+  }
+
+  function openFolder(folder: StorageItem) {
+    router.push({ params: { pathMatch: [...pathSegments.value, folder.name] } });
+  }
+
+  function navigateToBreadcrumb(index: number) {
+    router.push({ params: { pathMatch: pathSegments.value.slice(0, index) } });
+  }
+
+  async function handleCreateFolder() {
+    if (!newFolderName.value.trim()) {
+      return;
+    }
+
+    try {
+      await createFolder({
+        name: newFolderName.value.trim(),
+        parentId: currentFolderId.value,
+      });
+
+      newFolderName.value = '';
+      showNewFolder.value = false;
+
+      await navigateToPath(pathSegments.value);
+    } catch (e: unknown) {
+      error.value = e instanceof Error ? e.message : 'Failed to create folder';
+    }
+  }
+
+  async function handleUpload(e: Event) {
+    const input = e.target as HTMLInputElement;
+    const file = input.files?.[0];
+
+    if (!file) {
+      return;
+    }
+
+    try {
+      await uploadFile(file, currentFolderId.value);
+
+      input.value = '';
+
+      await navigateToPath(pathSegments.value);
+    } catch (e: unknown) {
+      error.value = e instanceof Error ? e.message : 'Failed to upload file';
+    }
+  }
+
+  async function handleDelete(id: string) {
+    if (!confirm('Delete this item? The file will remain in SharePoint.')) {
+      return;
+    }
+
+    try {
+      await deleteItem(id);
+      await navigateToPath(pathSegments.value);
+    } catch (e: unknown) {
+      error.value = e instanceof Error ? e.message : 'Failed to delete item';
+    }
+  }
+
+  async function handleDownload(id: string) {
+    try {
+      const urls = await getDownloadUrls(id);
+
+      if (urls.sharePointUrl) {
+        open(urls.sharePointUrl, '_blank');
+      }
+    } catch (e: unknown) {
+      error.value = e instanceof Error ? e.message : 'Failed to get download URL';
+    }
+  }
+
+  async function handleProxyDownload(id: string) {
+    try {
+      const urls = await getDownloadUrls(id);
+
+      if (urls.proxyUrl) {
+        open(urls.proxyUrl, '_blank');
+      }
+    } catch (e: unknown) {
+      error.value = e instanceof Error ? e.message : 'Failed to get download URL';
+    }
+  }
+
+  function formatSize(bytes: number): string {
+    if (bytes < 1024) return `${bytes} B`;
+    if (bytes < 1048576) return `${(bytes / 1024).toFixed(1)} KB`;
+    return `${(bytes / 1048576).toFixed(1)} MB`;
+  }
+</script>
+
+<template>
+  <div class="page">
+    <header class="page-header">
+      <h1>Files</h1>
+    </header>
+
+    <div
+      v-if="error"
+      class="alert error"
+    >
+      {{ error }}
+    </div>
+
+    <nav class="breadcrumbs">
+      <button
+        class="crumb"
+        :class="{ active: currentFolderId === null }"
+        @click="navigateToBreadcrumb(0)"
+      >
+        Root
+      </button>
+      <template
+        v-for="(crumb, i) in breadcrumbs"
+        :key="i"
+      >
+        <span class="crumb-sep">/</span>
+        <button
+          class="crumb"
+          :class="{ active: i === breadcrumbs.length - 1 }"
+          @click="navigateToBreadcrumb(i + 1)"
+        >
+          {{ crumb.name }}
+        </button>
+      </template>
+    </nav>
+
+    <div class="toolbar">
+      <button
+        class="btn"
+        @click="showNewFolder = !showNewFolder"
+      >
+        <AppIcon
+          v-if="!showNewFolder"
+          name="plus"
+          :size="14"
+        />
+        {{ showNewFolder ? 'Cancel' : 'New Folder' }}
+      </button>
+
+      <label class="btn btn-primary upload-label">
+        <AppIcon
+          name="upload"
+          :size="14"
+        />
+        Upload File
+        <input
+          type="file"
+          hidden
+          @change="handleUpload"
+        />
+      </label>
+    </div>
+
+    <div
+      v-if="showNewFolder"
+      class="inline-form"
+    >
+      <input
+        v-model="newFolderName"
+        type="text"
+        placeholder="Folder name"
+        @keyup.enter="handleCreateFolder"
+      />
+      <button
+        class="btn btn-primary"
+        @click="handleCreateFolder"
+      >
+        Create
+      </button>
+    </div>
+
+    <div
+      v-if="loading"
+      class="loading"
+    >
+      Loading...
+    </div>
+
+    <div
+      v-else-if="items.length === 0"
+      class="empty"
+    >
+      <p>This folder is empty.</p>
+    </div>
+
+    <div
+      v-else
+      class="item-list"
+    >
+      <div
+        v-for="folder in folders"
+        :key="folder.id"
+        class="item-row folder"
+        @dblclick="openFolder(folder)"
+      >
+        <span class="item-icon"
+          ><AppIcon
+            name="folder"
+            :size="16"
+        /></span>
+        <span
+          class="item-name"
+          @click="openFolder(folder)"
+          >{{ folder.name }}</span
+        >
+        <span class="item-meta">Folder</span>
+        <span class="item-user">{{ folder.createdByDisplayName }}</span>
+        <span class="item-date">{{ formatLocaleDate(folder.createdAt) }}</span>
+        <span class="item-actions">
+          <button
+            class="btn-small btn-small-danger"
+            title="Delete"
+            @click="handleDelete(folder.id)"
+          >
+            <AppIcon
+              name="trash"
+              :size="14"
+            />
+          </button>
+        </span>
+      </div>
+
+      <div
+        v-for="file in files"
+        :key="file.id"
+        class="item-row file"
+      >
+        <span class="item-icon"
+          ><AppIcon
+            name="file"
+            :size="16"
+        /></span>
+        <span class="item-name">{{ file.name }}</span>
+        <span class="item-meta">{{ formatSize(file.fileSize) }}</span>
+        <span class="item-user">{{ file.createdByDisplayName }}</span>
+        <span class="item-date">{{ formatLocaleDate(file.createdAt) }}</span>
+        <span class="item-actions">
+          <button
+            class="btn-small"
+            title="Open in SharePoint"
+            @click="handleDownload(file.id)"
+          >
+            <AppIcon
+              name="external"
+              :size="14"
+            />
+          </button>
+          <button
+            class="btn-small"
+            title="Download via app"
+            @click="handleProxyDownload(file.id)"
+          >
+            <AppIcon
+              name="download"
+              :size="14"
+            />
+          </button>
+          <button
+            class="btn-small btn-small-danger"
+            title="Delete"
+            @click="handleDelete(file.id)"
+          >
+            <AppIcon
+              name="trash"
+              :size="14"
+            />
+          </button>
+        </span>
+      </div>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+  .page {
+    max-width: 960px;
+  }
+
+  .page-header {
+    margin-bottom: 1rem;
+  }
+
+  .breadcrumbs {
+    display: flex;
+    align-items: center;
+    gap: 0.25rem;
+    margin-bottom: 1rem;
+    padding: 0.5rem 0;
+    border-bottom: 1px solid var(--color-border);
+  }
+
+  .crumb {
+    background: none;
+    border: none;
+    padding: 0.25rem 0.5rem;
+    border-radius: var(--radius);
+    cursor: pointer;
+    font-size: var(--text-sm);
+    color: var(--color-accent);
+  }
+
+  .crumb.active {
+    font-weight: 600;
+    color: var(--color-text);
+    cursor: default;
+  }
+
+  .crumb-sep {
+    color: var(--color-text-muted);
+    font-size: var(--text-sm);
+  }
+
+  .toolbar {
+    display: flex;
+    gap: 0.5rem;
+    margin-bottom: 1rem;
+  }
+
+  .upload-label {
+    cursor: pointer;
+  }
+
+  .inline-form {
+    display: flex;
+    gap: 0.5rem;
+    margin-bottom: 1rem;
+    align-items: center;
+  }
+
+  .inline-form input {
+    flex: 1;
+  }
+
+  .item-list {
+    border: 1px solid var(--color-border);
+    overflow: hidden;
+  }
+
+  .item-row {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    padding: 0.5rem 0.75rem;
+    border-bottom: 1px solid var(--color-border);
+    font-size: var(--text-sm);
+  }
+
+  .item-row:last-child {
+    border-bottom: none;
+  }
+
+  .item-row.folder {
+    cursor: pointer;
+  }
+
+  .item-row.folder:hover {
+    background: var(--color-surface-subtle);
+  }
+
+  .item-icon {
+    display: inline-flex;
+    align-items: center;
+    flex-shrink: 0;
+    color: var(--color-text-muted);
+  }
+
+  .folder .item-icon {
+    color: var(--color-accent);
+  }
+
+  .item-name {
+    flex: 1;
+    font-weight: 500;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .folder .item-name {
+    color: var(--color-accent);
+  }
+
+  .item-meta {
+    width: 5rem;
+    text-align: right;
+    color: var(--color-text-secondary);
+    flex-shrink: 0;
+  }
+
+  .item-user {
+    width: 8rem;
+    color: var(--color-text-secondary);
+    flex-shrink: 0;
+  }
+
+  .item-date {
+    width: 7rem;
+    color: var(--color-text-muted);
+    flex-shrink: 0;
+  }
+
+  .item-actions {
+    display: flex;
+    gap: 0.25rem;
+    flex-shrink: 0;
+    width: 6.5rem;
+    justify-content: flex-end;
+  }
+</style>

src/ParagonPlayground/frontend/src/views/IntegrationsPage.vue

@@ -0,0 +1,320 @@
+<script setup lang="ts">
+  import { ref, computed, onMounted } from 'vue';
+  import type { IntegrationInstallEvent } from '@useparagon/connect';
+  import {
+    getParagonToken,
+    getConfig,
+    updateConfig,
+    getCredentials,
+    saveCredential,
+    purgeOrgCredentials,
+    type IntegrationConfig,
+    type IntegrationConfigRequest,
+    type CredentialResponse,
+  } from '../services/integration';
+import { formatLocaleDateWithTime } from '../utils/utils';
+
+  const config = ref<IntegrationConfig | null>(null);
+  const credentials = ref<CredentialResponse[]>([]);
+
+  const loading = ref(true);
+  const saving = ref(false);
+  const uninstalling = ref(false);
+
+  const error = ref('');
+  const success = ref('');
+
+  const form = ref<IntegrationConfigRequest>({
+    connectionMode: 'default',
+    sharePointSiteUrl: null,
+    sharePointFolderPath: null,
+  });
+
+  const hasOrgIntegration = computed(() =>
+    credentials.value.some((c) => c.integrationType === 'sharepoint'),
+  );
+
+  const submitLabel = computed(() => {
+    if (saving.value) {
+      return 'Saving...';
+    }
+
+    return hasOrgIntegration.value ? 'Save Configuration' : 'Save & Set Up Integration';
+  });
+
+  onMounted(() => {
+    loadData();
+  });
+
+  async function loadData() {
+    loading.value = true;
+    error.value = '';
+
+    try {
+      const [cfg, myCreds] = await Promise.all([
+        getConfig().catch(() => null),
+        getCredentials().catch(() => []),
+      ]);
+
+      config.value = cfg;
+      credentials.value = myCreds;
+
+      if (cfg) {
+        form.value = {
+          connectionMode: cfg.connectionMode,
+          sharePointSiteUrl: cfg.sharePointSiteUrl,
+          sharePointFolderPath: cfg.sharePointFolderPath,
+        };
+      }
+    } catch {
+      error.value = 'Failed to load integration data';
+    } finally {
+      loading.value = false;
+    }
+  }
+
+  async function saveConfig() {
+    if (!form.value.sharePointSiteUrl?.trim()) {
+      error.value = 'SharePoint Site URL is required to set up the integration.';
+      return;
+    }
+
+    saving.value = true;
+    error.value = '';
+
+    try {
+      if (hasOrgIntegration.value) {
+        const updated = await updateConfig(form.value);
+
+        config.value = updated;
+        success.value = 'Configuration saved';
+      } else {
+        await installAndSave();
+      }
+    } catch (e: unknown) {
+      error.value = e instanceof Error ? e.message : 'Failed to save configuration';
+    } finally {
+      saving.value = false;
+    }
+  }
+
+  async function installAndSave() {
+    const tokenResponse = await getParagonToken();
+    const { paragon, SDK_EVENT } = await import('@useparagon/connect');
+    await paragon.authenticate(tokenResponse.projectId, tokenResponse.paragonJwt);
+
+    const unsubscribeInstall = paragon.subscribe(
+      SDK_EVENT.ON_INTEGRATION_INSTALL,
+      async (event: IntegrationInstallEvent) => {
+        if (!event.credentialId) {
+          return;
+        }
+
+        unsubscribeInstall();
+        saving.value = true;
+
+        try {
+          await saveCredential({
+            credentialId: event.credentialId,
+            integrationType: 'sharepoint',
+          });
+
+          const updated = await updateConfig(form.value);
+
+          config.value = updated;
+          success.value = 'SharePoint integration installed and configured!';
+
+          await loadData();
+        } catch (e: unknown) {
+          error.value = e instanceof Error ? e.message : 'Failed to complete setup';
+        } finally {
+          saving.value = false;
+        }
+      },
+    );
+
+    try {
+      paragon.installIntegration('sharepoint', {
+        allowMultipleCredentials: true,
+        ...(form.value.connectionMode === 'byo' ? { accountType: ['user-configured-oauth'] } : {}),
+      });
+    } catch (e: unknown) {
+      error.value = e instanceof Error ? e.message : 'Failed to start setup';
+      unsubscribeInstall();
+    }
+  }
+
+  async function uninstallOrgIntegration() {
+    uninstalling.value = true;
+    error.value = '';
+
+    try {
+      const tokenResponse = await getParagonToken();
+      const { paragon } = await import('@useparagon/connect');
+      await paragon.authenticate(tokenResponse.projectId, tokenResponse.paragonJwt);
+
+      await paragon.uninstallIntegration('sharepoint');
+      await purgeOrgCredentials();
+
+      success.value = 'SharePoint integration removed from organization.';
+
+      await loadData();
+    } catch (e: unknown) {
+      error.value = e instanceof Error ? e.message : 'Failed to uninstall integration';
+    } finally {
+      uninstalling.value = false;
+    }
+  }
+</script>
+
+<template>
+  <div class="page">
+    <header class="page-header">
+      <h1>Integrations</h1>
+    </header>
+
+    <div
+      v-if="error"
+      class="alert error"
+    >
+      {{ error }}
+    </div>
+    <div
+      v-if="success"
+      class="alert success"
+    >
+      {{ success }}
+    </div>
+
+    <div
+      v-if="loading"
+      class="loading"
+    >
+      Loading...
+    </div>
+
+    <template v-if="!loading">
+      <section class="section">
+        <h2>Integration Configuration</h2>
+        <p class="help-text">
+          Choose how users authenticate to Microsoft and where files are stored. First-time setup
+          connects the integration before saving.
+        </p>
+
+        <form
+          class="config-form"
+          @submit.prevent="saveConfig"
+        >
+          <label>
+            <span class="label-title">Connection Mode</span>
+            <select v-model="form.connectionMode">
+              <option value="default">Default — ISV-provided Azure AD app</option>
+              <option value="byo">
+                User-Configured OAuth — organization provides their own Azure AD app
+              </option>
+            </select>
+            <span class="field-note">
+              Default uses our Azure AD app; BYO uses the organization's own.
+            </span>
+          </label>
+
+          <label>
+            <span class="label-title">SharePoint Site URL</span>
+            <input
+              v-model="form.sharePointSiteUrl"
+              type="url"
+              placeholder="https://contoso.sharepoint.com/sites/MySite"
+            />
+            <span class="field-note"
+              >Site ID is resolved from this URL using the connected admin account, which must have
+              access to the site.</span
+            >
+          </label>
+
+          <label>
+            <span class="label-title">SharePoint Folder Path</span>
+            <input
+              v-model="form.sharePointFolderPath"
+              type="text"
+              placeholder="e.g. Uploads/MyApp"
+            />
+            <span class="field-note">Created automatically if it doesn't exist.</span>
+          </label>
+
+          <div class="connect-actions">
+            <button
+              class="btn btn-primary"
+              type="submit"
+              :disabled="saving || uninstalling"
+            >
+              {{ submitLabel }}
+            </button>
+
+            <button
+              v-if="hasOrgIntegration"
+              class="btn btn-danger"
+              type="button"
+              :disabled="saving || uninstalling"
+              @click="uninstallOrgIntegration()"
+            >
+              {{ uninstalling ? 'Uninstalling...' : 'Uninstall Organization Integration' }}
+            </button>
+          </div>
+        </form>
+
+        <div
+          v-if="config"
+          class="config-meta"
+        >
+          Last updated: {{ formatLocaleDateWithTime(config.updatedAt) }}
+        </div>
+      </section>
+
+      <p class="help-text text-muted">
+        Users connect and manage their own accounts from the Settings page.
+      </p>
+    </template>
+  </div>
+</template>
+
+<style scoped>
+  .connect-actions {
+    display: flex;
+    gap: 0.75rem;
+    flex-wrap: wrap;
+    margin-top: 1rem;
+  }
+
+  .config-form label {
+    display: block;
+    margin-bottom: 0.75rem;
+    font-weight: 600;
+    font-size: var(--text-sm);
+  }
+
+  .label-title {
+    display: block;
+    margin-bottom: 0.25rem;
+  }
+
+  .config-form input,
+  .config-form select {
+    display: block;
+    width: 100%;
+    margin-top: 0.25rem;
+  }
+
+  .field-note {
+    display: block;
+    margin-top: 0.25rem;
+    font-weight: 400;
+    font-size: var(--text-xs);
+    color: var(--color-text-muted);
+  }
+
+  .config-meta {
+    margin-top: 1rem;
+    font-size: var(--text-xs);
+    color: var(--color-text-muted);
+  }
+</style>

src/ParagonPlayground/frontend/src/views/LoginPage.vue

@@ -1,23 +1,23 @@
 <script setup lang="ts">
-import { ref } from "vue";
+  import { ref } from 'vue';
-import { useRouter } from "vue-router";
+  import { useRouter } from 'vue-router';
-import { login } from "../services/auth";
+  import { login } from '../services/auth';
 
   const router = useRouter();
-const email = ref("");
+  const email = ref('');
-const password = ref("");
+  const password = ref('');
-const error = ref("");
+  const error = ref('');
   const loading = ref(false);
 
   async function handleSubmit() {
-  error.value = "";
+    error.value = '';
     loading.value = true;
 
     try {
       await login(email.value, password.value);
-    router.push("/");
+      router.push('/');
     } catch (e: unknown) {
-    error.value = e instanceof Error ? e.message : "Login failed";
+      error.value = e instanceof Error ? e.message : 'Login failed';
     } finally {
       loading.value = false;
     }
@@ -26,15 +26,28 @@ async function handleSubmit() {
 
 <template>
   <div class="login-container">
-    <form class="login-form" @submit.prevent="handleSubmit">
+    <form
+      class="login-form"
+      @submit.prevent="handleSubmit"
+    >
       <h1>Paragon Playground</h1>
       <p class="subtitle">Sign in to your account</p>
 
-      <div v-if="error" class="error">{{ error }}</div>
+      <div
+        v-if="error"
+        class="alert error"
+      >
+        {{ error }}
+      </div>
 
       <label>
         Email
-        <input v-model="email" type="email" required autocomplete="email" />
+        <input
+          v-model="email"
+          type="email"
+          required
+          autocomplete="email"
+        />
       </label>
 
       <label>
@@ -47,8 +60,12 @@ async function handleSubmit() {
         />
       </label>
 
-      <button type="submit" :disabled="loading">
+      <button
-        {{ loading ? "Signing in..." : "Sign in" }}
+        class="btn btn-primary login-submit"
+        type="submit"
+        :disabled="loading"
+      >
+        {{ loading ? 'Signing in...' : 'Sign in' }}
       </button>
     </form>
   </div>
@@ -60,64 +77,45 @@ async function handleSubmit() {
     justify-content: center;
     align-items: center;
     min-height: 100vh;
-  background: #f5f5f5;
+    padding: 1rem;
   }
 
   .login-form {
-  background: white;
+    background: var(--color-surface);
+    border: 1px solid var(--color-border);
+    border-radius: var(--radius);
     padding: 2rem;
-  border-radius: 8px;
-  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
     width: 100%;
     max-width: 400px;
   }
 
   .login-form h1 {
     margin: 0 0 0.25rem;
-  font-size: 1.5rem;
+    font-size: var(--text-xl);
+    font-weight: 650;
   }
 
   .subtitle {
-  color: #666;
+    color: var(--color-text-secondary);
+    font-size: var(--text-sm);
     margin-bottom: 1.5rem;
   }
 
-.error {
-  background: #fee;
-  color: #c00;
-  padding: 0.5rem;
-  border-radius: 4px;
-  margin-bottom: 1rem;
-}
-
   label {
     display: block;
     margin-bottom: 1rem;
     font-weight: 600;
+    font-size: var(--text-sm);
   }
 
   input {
     display: block;
     width: 100%;
-  padding: 0.5rem;
     margin-top: 0.25rem;
-  border: 1px solid #ccc;
-  border-radius: 4px;
-  font-size: 1rem;
   }
 
-button {
+  .login-submit {
     width: 100%;
-  padding: 0.75rem;
+    padding: 0.625rem;
-  background: #1a73e8;
-  color: white;
-  border: none;
-  border-radius: 4px;
-  font-size: 1rem;
-  cursor: pointer;
-}
-
-button:disabled {
-  opacity: 0.6;
   }
 </style>

src/ParagonPlayground/frontend/src/views/SettingsPage.vue

@@ -0,0 +1,325 @@
+<script setup lang="ts">
+  import { ref, computed, onMounted } from 'vue';
+  import type { IntegrationInstallEvent } from '@useparagon/connect';
+  import AppIcon from '../components/AppIcon.vue';
+  import {
+    getParagonToken,
+    getConfig,
+    getCredentials,
+    saveCredential,
+    deleteCredential,
+    type IntegrationConfig,
+    type CredentialResponse,
+  } from '../services/integration';
+import { formatLocaleDateWithTime } from '../utils/utils';
+
+  const config = ref<IntegrationConfig | null>(null);
+  const credentials = ref<CredentialResponse[]>([]);
+
+  const loading = ref(true);
+  const managing = ref(false);
+  const connecting = ref(false);
+  const disconnecting = ref(false);
+
+  const error = ref('');
+  const success = ref('');
+
+  const spCredential = computed(() =>
+    credentials.value.find((c) => c.integrationType === 'sharepoint'),
+  );
+
+  const integrationConfigured = computed(() => Boolean(config.value?.sharePointSiteId));
+
+  const connectionMode = computed(() => config.value?.connectionMode ?? 'default');
+
+  onMounted(() => {
+    loadData();
+  });
+
+  async function loadData() {
+    loading.value = true;
+    error.value = '';
+
+    try {
+      const [cfg, creds] = await Promise.all([
+        getConfig().catch(() => null),
+        getCredentials().catch(() => []),
+      ]);
+
+      config.value = cfg;
+      credentials.value = creds;
+    } catch {
+      error.value = 'Failed to load settings data';
+    } finally {
+      loading.value = false;
+    }
+  }
+
+  async function manageConnection(accountType?: string[]) {
+    managing.value = true;
+    error.value = '';
+
+    try {
+      const tokenResponse = await getParagonToken();
+      const { paragon } = await import('@useparagon/connect');
+      await paragon.authenticate(tokenResponse.projectId, tokenResponse.paragonJwt);
+
+      void paragon.connect('sharepoint', {
+        selectedCredentialId: spCredential.value!.credentialId,
+        ...(accountType ? { accountType } : {}),
+        onClose: async () => {
+          managing.value = false;
+          await loadData();
+        },
+      });
+    } catch (e: unknown) {
+      error.value = e instanceof Error ? e.message : 'Failed to open connection manager';
+      managing.value = false;
+    }
+  }
+
+  async function connectAccount(accountType?: string[]) {
+    connecting.value = true;
+    error.value = '';
+
+    try {
+      const tokenResponse = await getParagonToken();
+      const { paragon, SDK_EVENT } = await import('@useparagon/connect');
+      await paragon.authenticate(tokenResponse.projectId, tokenResponse.paragonJwt);
+
+      const unsub = paragon.subscribe(
+        SDK_EVENT.ON_INTEGRATION_INSTALL,
+        async (event: IntegrationInstallEvent) => {
+          if (!event.credentialId) {
+            return;
+          }
+
+          try {
+            await saveCredential({
+              credentialId: event.credentialId,
+              integrationType: 'sharepoint',
+            });
+            success.value = 'SharePoint account connected!';
+            unsub();
+            await loadData();
+          } catch {
+            error.value = 'Failed to save credential';
+          }
+        },
+      );
+
+      paragon.installIntegration('sharepoint', {
+        allowMultipleCredentials: true,
+        ...(accountType ? { accountType } : {}),
+      });
+    } catch (e: unknown) {
+      error.value = e instanceof Error ? e.message : 'Failed to connect account';
+    } finally {
+      connecting.value = false;
+    }
+  }
+
+  async function disconnectAccount() {
+    disconnecting.value = true;
+    error.value = '';
+
+    try {
+      const tokenResponse = await getParagonToken();
+      const { paragon } = await import('@useparagon/connect');
+      await paragon.authenticate(tokenResponse.projectId, tokenResponse.paragonJwt);
+
+      await paragon.uninstallIntegration('sharepoint', {
+        selectedCredentialId: spCredential.value!.credentialId,
+      });
+
+      await deleteCredential(spCredential.value!.credentialId);
+      success.value = 'SharePoint account disconnected.';
+      await loadData();
+    } catch (e: unknown) {
+      error.value = e instanceof Error ? e.message : 'Failed to disconnect account';
+    } finally {
+      disconnecting.value = false;
+    }
+  }
+
+</script>
+
+<template>
+  <div class="page">
+    <header class="page-header">
+      <h1>Settings</h1>
+    </header>
+
+    <div
+      v-if="error"
+      class="alert error"
+    >
+      {{ error }}
+    </div>
+    <div
+      v-if="success"
+      class="alert success"
+    >
+      {{ success }}
+    </div>
+
+    <div
+      v-if="loading"
+      class="loading"
+    >
+      Loading...
+    </div>
+
+    <template v-if="!loading">
+      <section class="section">
+        <h2>Integrations</h2>
+
+        <template v-if="integrationConfigured">
+          <div class="integration-row">
+            <div class="integration-info">
+              <span class="integration-icon"><AppIcon
+                name="folder"
+                :size="20"
+              /></span>
+              <div>
+                <h3 class="integration-name">SharePoint</h3>
+                <p class="help-text integration-desc">
+                  Connect your SharePoint account to upload and manage files.
+                </p>
+              </div>
+            </div>
+
+            <div class="connect-actions">
+              <template v-if="spCredential">
+                <button
+                  class="btn btn-primary"
+                  :disabled="managing"
+                  @click="
+                    manageConnection(
+                      connectionMode === 'byo' ? ['user-configured-oauth'] : undefined,
+                    )
+                  "
+                >
+                  {{ managing ? 'Loading...' : 'Manage Connection' }}
+                </button>
+
+                <button
+                  class="btn btn-danger"
+                  :disabled="disconnecting"
+                  @click="disconnectAccount()"
+                >
+                  {{ disconnecting ? 'Disconnecting...' : 'Disconnect Account' }}
+                </button>
+              </template>
+
+              <button
+                v-else
+                class="btn btn-primary"
+                :disabled="connecting"
+                @click="
+                  connectAccount(
+                    connectionMode === 'byo' ? ['user-configured-oauth'] : undefined,
+                  )
+                "
+              >
+                {{ connecting ? 'Connecting...' : 'Connect Account' }}
+              </button>
+            </div>
+          </div>
+
+          <div
+            v-if="credentials.length > 0"
+            class="credentials-list"
+          >
+            <h3>Your Connected Accounts</h3>
+            <div
+              v-for="cred in credentials"
+              :key="cred.id"
+              class="credential-row"
+            >
+              <span class="cred-type">{{ cred.integrationType }}</span>
+              <span class="cred-date">Connected {{ formatLocaleDateWithTime(cred.connectedAt) }}</span>
+              <span class="cred-id">{{ cred.credentialId.slice(0, 12) }}...</span>
+            </div>
+          </div>
+        </template>
+
+        <template v-else>
+          <p class="help-text text-muted">
+            No integrations configured by your organization's admin yet.
+          </p>
+        </template>
+      </section>
+    </template>
+  </div>
+</template>
+
+<style scoped>
+  .integration-row {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    gap: 1rem;
+    flex-wrap: wrap;
+  }
+
+  .integration-info {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+  }
+
+  .integration-icon {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    width: 2.25rem;
+    height: 2.25rem;
+    border: 1px solid var(--color-border);
+    border-radius: var(--radius);
+    color: var(--color-accent);
+    flex-shrink: 0;
+  }
+
+  .integration-name {
+    margin: 0;
+  }
+
+  .integration-desc {
+    margin: 0.25rem 0 0;
+  }
+
+  .connect-actions {
+    display: flex;
+    gap: 0.75rem;
+    flex-wrap: wrap;
+  }
+
+  .credentials-list {
+    margin-top: 1.25rem;
+    border-top: 1px solid var(--color-border);
+  }
+
+  .credential-row {
+    display: flex;
+    gap: 1rem;
+    align-items: center;
+    padding: 0.5rem 0;
+    font-size: var(--text-sm);
+  }
+
+  .cred-type {
+    font-weight: 600;
+    text-transform: capitalize;
+    min-width: 6rem;
+  }
+
+  .cred-date {
+    color: var(--color-text-secondary);
+  }
+
+  .cred-id {
+    color: var(--color-text-muted);
+    font-family: ui-monospace, 'Cascadia Code', Consolas, monospace;
+  }
+</style>

src/ParagonPlayground/frontend/tsconfig.json

@@ -1,7 +1,4 @@
 {
   "files": [],
-  "references": [
+  "references": [{ "path": "./tsconfig.app.json" }, { "path": "./tsconfig.node.json" }]
-    { "path": "./tsconfig.app.json" },
-    { "path": "./tsconfig.node.json" }
-  ]
 }

src/ParagonPlayground/frontend/vite.config.ts

@@ -1,10 +1,14 @@
-import { defineConfig } from 'vite'
+import { defineConfig } from 'vite';
-import vue from '@vitejs/plugin-vue'
+import vue from '@vitejs/plugin-vue';
+import vueDevTools from 'vite-plugin-vue-devtools';
 
-export default defineConfig({
+export default defineConfig(({ command }) => ({
-  plugins: [vue()],
+  plugins: [vue(), ...(command === 'serve' ? [vueDevTools()] : [])],
   server: {
     port: 3000,
+    watch: {
+      usePolling: true,
+    },
     proxy: {
       '/api': {
         target: 'http://localhost:5000',
@@ -12,4 +16,4 @@ export default defineConfig({
       },
     },
   },
-})
+}));

src/ParagonPlayground/nginx/nginx.conf

@@ -6,6 +6,7 @@ server {
     ssl_certificate_key /etc/nginx/certs/_wildcard.paragonplayground.localhost-key.pem;
 
     location /api/ {
+        client_max_body_size 0;
         proxy_pass http://backend:8080;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;