diff --git a/CHANGELOG.md b/CHANGELOG.md
index 502e86f..02d33df 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -38,10 +38,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - TeamContext provider for managing current team selection
   - TeamSelector dropdown component (persists selection in localStorage)
   - Teams list page at `/teams`
-  - Team dashboard page at `/teams/{slug}`
+  - Team dashboard page at `/teams/{slug}` with inline project creation
   - Team settings page at `/teams/{slug}/settings`
   - Team members page at `/teams/{slug}/members`
   - Teams navigation link in header (authenticated users only)
+- Updated seed data to create a "Demo Team" and assign all seed projects to it
 - Added TypeScript types and API client functions for teams
 - Added integration tests for team CRUD, membership, and project operations
 - Added unit tests for TeamAuthorizationService
diff --git a/backend/app/seed.py b/backend/app/seed.py
index ed1a29d..fdd3c07 100644
--- a/backend/app/seed.py
+++ b/backend/app/seed.py
@@ -5,7 +5,7 @@ import hashlib
 import logging
 from sqlalchemy.orm import Session
 
-from .models import Project, Package, Artifact, Tag, Upload, PackageVersion, ArtifactDependency
+from .models import Project, Package, Artifact, Tag, Upload, PackageVersion, ArtifactDependency, Team, TeamMembership, User
 from .storage import get_storage
 
 logger = logging.getLogger(__name__)
@@ -149,6 +149,33 @@ def seed_database(db: Session) -> None:
     logger.info("Seeding database with test data...")
     storage = get_storage()
 
+    # Find or use admin user for team ownership
+    admin_user = db.query(User).filter(User.username == "admin").first()
+    team_owner_username = admin_user.username if admin_user else "seed-user"
+
+    # Create a demo team
+    demo_team = Team(
+        name="Demo Team",
+        slug="demo-team",
+        description="A demonstration team with sample projects",
+        created_by=team_owner_username,
+    )
+    db.add(demo_team)
+    db.flush()
+
+    # Add admin user as team owner if they exist
+    if admin_user:
+        membership = TeamMembership(
+            team_id=demo_team.id,
+            user_id=admin_user.id,
+            role="owner",
+            invited_by=team_owner_username,
+        )
+        db.add(membership)
+        db.flush()
+
+    logger.info(f"Created team: {demo_team.name} ({demo_team.slug})")
+
     # Create projects and packages
     project_map = {}
     package_map = {}
@@ -158,7 +185,8 @@ def seed_database(db: Session) -> None:
             name=project_data["name"],
             description=project_data["description"],
             is_public=project_data["is_public"],
-            created_by="seed-user",
+            created_by=team_owner_username,
+            team_id=demo_team.id,  # Assign to demo team
         )
         db.add(project)
         db.flush()  # Get the ID
@@ -174,7 +202,7 @@ def seed_database(db: Session) -> None:
             db.flush()
             package_map[(project_data["name"], package_data["name"])] = package
 
-    logger.info(f"Created {len(project_map)} projects and {len(package_map)} packages")
+    logger.info(f"Created {len(project_map)} projects and {len(package_map)} packages (assigned to {demo_team.slug})")
 
     # Create artifacts, tags, and versions
     artifact_count = 0
@@ -212,7 +240,7 @@ def seed_database(db: Session) -> None:
             size=size,
             content_type=artifact_data["content_type"],
             original_name=artifact_data["filename"],
-            created_by="seed-user",
+            created_by=team_owner_username,
             s3_key=s3_key,
             ref_count=ref_count,
         )
@@ -235,7 +263,7 @@ def seed_database(db: Session) -> None:
                 artifact_id=sha256_hash,
                 version=artifact_data["version"],
                 version_source="explicit",
-                created_by="seed-user",
+                created_by=team_owner_username,
             )
             db.add(version)
             version_count += 1
@@ -246,7 +274,7 @@ def seed_database(db: Session) -> None:
                 package_id=package.id,
                 name=tag_name,
                 artifact_id=sha256_hash,
-                created_by="seed-user",
+                created_by=team_owner_username,
             )
             db.add(tag)
             tag_count += 1
diff --git a/frontend/src/api.ts b/frontend/src/api.ts
index b78b7a1..6260fa7 100644
--- a/frontend/src/api.ts
+++ b/frontend/src/api.ts
@@ -166,7 +166,7 @@ export async function listProjectsSimple(params: ListParams = {}): Promise<Proje
   return data.items;
 }
 
-export async function createProject(data: { name: string; description?: string; is_public?: boolean }): Promise<Project> {
+export async function createProject(data: { name: string; description?: string; is_public?: boolean; team_id?: string }): Promise<Project> {
   const response = await fetch(`${API_BASE}/projects`, {
     method: 'POST',
     headers: { 'Content-Type': 'application/json' },
diff --git a/frontend/src/pages/TeamDashboardPage.css b/frontend/src/pages/TeamDashboardPage.css
index c784988..5493f08 100644
--- a/frontend/src/pages/TeamDashboardPage.css
+++ b/frontend/src/pages/TeamDashboardPage.css
@@ -221,3 +221,100 @@
 .btn-secondary:hover {
   background: var(--color-bg-tertiary);
 }
+
+/* Modal */
+.modal-overlay {
+  position: fixed;
+  inset: 0;
+  background: rgba(0, 0, 0, 0.5);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 1000;
+  padding: 1rem;
+}
+
+.modal-content {
+  background: var(--color-bg);
+  border-radius: var(--radius-lg);
+  padding: 1.5rem;
+  width: 100%;
+  max-width: 480px;
+  max-height: 90vh;
+  overflow-y: auto;
+}
+
+.modal-content h2 {
+  margin: 0 0 1.5rem;
+  font-size: 1.25rem;
+}
+
+/* Form */
+.form-group {
+  margin-bottom: 1rem;
+}
+
+.form-group label {
+  display: block;
+  margin-bottom: 0.5rem;
+  font-weight: 500;
+  font-size: 0.875rem;
+}
+
+.form-group input[type="text"],
+.form-group textarea {
+  width: 100%;
+  padding: 0.625rem 0.75rem;
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-md);
+  background: var(--color-bg);
+  color: var(--color-text);
+  font-size: 0.875rem;
+}
+
+.form-group input:focus,
+.form-group textarea:focus {
+  outline: none;
+  border-color: var(--color-primary);
+  box-shadow: 0 0 0 3px var(--color-primary-alpha);
+}
+
+.form-group textarea {
+  resize: vertical;
+  min-height: 80px;
+}
+
+.checkbox-group label {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  cursor: pointer;
+}
+
+.checkbox-group input[type="checkbox"] {
+  width: 1rem;
+  height: 1rem;
+}
+
+.form-hint {
+  display: block;
+  font-size: 0.8125rem;
+  color: var(--color-text-muted);
+  margin-top: 0.375rem;
+}
+
+.form-actions {
+  display: flex;
+  justify-content: flex-end;
+  gap: 0.75rem;
+  margin-top: 1.5rem;
+}
+
+.btn:disabled {
+  opacity: 0.6;
+  cursor: not-allowed;
+}
+
+.empty-state .btn {
+  margin-top: 1rem;
+}
diff --git a/frontend/src/pages/TeamDashboardPage.tsx b/frontend/src/pages/TeamDashboardPage.tsx
index f37b55e..a1e00db 100644
--- a/frontend/src/pages/TeamDashboardPage.tsx
+++ b/frontend/src/pages/TeamDashboardPage.tsx
@@ -1,7 +1,7 @@
 import { useState, useEffect, useCallback } from 'react';
 import { Link, useParams, useNavigate } from 'react-router-dom';
 import { TeamDetail, Project, PaginatedResponse } from '../types';
-import { getTeam, listTeamProjects } from '../api';
+import { getTeam, listTeamProjects, createProject } from '../api';
 import { useAuth } from '../contexts/AuthContext';
 import { Badge } from '../components/Badge';
 import { Breadcrumb } from '../components/Breadcrumb';
@@ -15,6 +15,9 @@ function TeamDashboardPage() {
   const [projects, setProjects] = useState<PaginatedResponse<Project> | null>(null);
   const [loading, setLoading] = useState(true);
   const [error, setError] = useState<string | null>(null);
+  const [showProjectForm, setShowProjectForm] = useState(false);
+  const [newProject, setNewProject] = useState({ name: '', description: '', is_public: true });
+  const [creating, setCreating] = useState(false);
 
   const loadTeamData = useCallback(async () => {
     if (!slug) return;
@@ -38,6 +41,22 @@ function TeamDashboardPage() {
     loadTeamData();
   }, [loadTeamData]);
 
+  async function handleCreateProject(e: React.FormEvent) {
+    e.preventDefault();
+    if (!team) return;
+    try {
+      setCreating(true);
+      const project = await createProject({ ...newProject, team_id: team.id });
+      setNewProject({ name: '', description: '', is_public: true });
+      setShowProjectForm(false);
+      navigate(`/project/${project.name}`);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Failed to create project');
+    } finally {
+      setCreating(false);
+    }
+  }
+
   if (loading) {
     return (
       <div className="team-dashboard">
@@ -124,13 +143,64 @@ function TeamDashboardPage() {
         </div>
       )}
 
+      {showProjectForm && (
+        <div className="modal-overlay" onClick={() => setShowProjectForm(false)}>
+          <div className="modal-content" onClick={e => e.stopPropagation()}>
+            <h2>Create New Project</h2>
+            <form onSubmit={handleCreateProject}>
+              <div className="form-group">
+                <label htmlFor="project-name">Project Name</label>
+                <input
+                  id="project-name"
+                  type="text"
+                  value={newProject.name}
+                  onChange={e => setNewProject({ ...newProject, name: e.target.value })}
+                  placeholder="my-project"
+                  required
+                  autoFocus
+                />
+              </div>
+              <div className="form-group">
+                <label htmlFor="project-description">Description (optional)</label>
+                <textarea
+                  id="project-description"
+                  value={newProject.description}
+                  onChange={e => setNewProject({ ...newProject, description: e.target.value })}
+                  placeholder="What is this project for?"
+                  rows={3}
+                />
+              </div>
+              <div className="form-group checkbox-group">
+                <label>
+                  <input
+                    type="checkbox"
+                    checked={newProject.is_public}
+                    onChange={e => setNewProject({ ...newProject, is_public: e.target.checked })}
+                  />
+                  Public project
+                </label>
+                <span className="form-hint">Public projects are visible to everyone</span>
+              </div>
+              <div className="form-actions">
+                <button type="button" className="btn btn-secondary" onClick={() => setShowProjectForm(false)}>
+                  Cancel
+                </button>
+                <button type="submit" className="btn btn-primary" disabled={creating}>
+                  {creating ? 'Creating...' : 'Create Project'}
+                </button>
+              </div>
+            </form>
+          </div>
+        </div>
+      )}
+
       <div className="team-section">
         <div className="section-header">
           <h2>Projects</h2>
           {isAdminOrOwner && (
-            <Link to="/" className="btn btn-primary btn-sm">
+            <button className="btn btn-primary btn-sm" onClick={() => setShowProjectForm(true)}>
               + New Project
-            </Link>
+            </button>
           )}
         </div>
 
@@ -138,7 +208,9 @@ function TeamDashboardPage() {
           <div className="empty-state">
             <p>No projects in this team yet.</p>
             {isAdminOrOwner && (
-              <p className="empty-hint">Create a project and assign it to this team to get started.</p>
+              <button className="btn btn-primary" onClick={() => setShowProjectForm(true)}>
+                Create Project
+              </button>
             )}
           </div>
         ) : (