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backend/app/__init__.py

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+import os
+from flask import Flask, send_from_directory
+from .extensions import db, migrate, cors
+from config import config
+
+def create_app(config_name=None):
+    if config_name is None:
+        config_name = os.environ.get('FLASK_ENV', 'production')
+
+    app = Flask(__name__, static_folder='static', static_url_path='')
+    app.config.from_object(config.get(config_name, config['default']))
+
+    db.init_app(app)
+    migrate.init_app(app, db)
+    cors.init_app(app, resources={r'/api/*': {'origins': '*'}})
+
+    from .routes.projects import projects_bp
+    from .routes.deliverables import deliverables_bp
+    app.register_blueprint(projects_bp, url_prefix='/api')
+    app.register_blueprint(deliverables_bp, url_prefix='/api')
+
+    with app.app_context():
+        db.create_all()
+
+    @app.route('/', defaults={'path': ''})
+    @app.route('/<path:path>')
+    def serve_react(path):
+        static_folder = app.static_folder
+        if path and os.path.exists(os.path.join(static_folder, path)):
+            return send_from_directory(static_folder, path)
+        return send_from_directory(static_folder, 'index.html')
+
+    return app

backend/app/extensions.py

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+from flask_sqlalchemy import SQLAlchemy
+from flask_migrate import Migrate
+from flask_cors import CORS
+
+db = SQLAlchemy()
+migrate = Migrate()
+cors = CORS()

backend/app/models.py

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+from .extensions import db
+from datetime import datetime
+
+class Project(db.Model):
+    __tablename__ = 'projects'
+
+    id          = db.Column(db.Integer, primary_key=True)
+    name        = db.Column(db.String(200), nullable=False)
+    color       = db.Column(db.String(7), nullable=False, default='#C9A84C')
+    description = db.Column(db.Text)
+    created_at  = db.Column(db.DateTime, default=datetime.utcnow)
+
+    deliverables = db.relationship(
+        'Deliverable', backref='project',
+        cascade='all, delete-orphan', lazy=True
+    )
+
+    def to_dict(self, include_deliverables=True):
+        data = {
+            'id':          self.id,
+            'name':        self.name,
+            'color':       self.color,
+            'description': self.description,
+            'created_at':  self.created_at.isoformat() if self.created_at else None,
+        }
+        if include_deliverables:
+            data['deliverables'] = [
+                d.to_dict() for d in sorted(self.deliverables, key=lambda x: x.due_date)
+            ]
+        return data
+
+
+class Deliverable(db.Model):
+    __tablename__ = 'deliverables'
+
+    id         = db.Column(db.Integer, primary_key=True)
+    project_id = db.Column(db.Integer, db.ForeignKey('projects.id', ondelete='CASCADE'), nullable=False)
+    title      = db.Column(db.String(300), nullable=False)
+    due_date   = db.Column(db.Date, nullable=False)
+    status     = db.Column(db.String(20), nullable=False, default='upcoming')
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+
+    def to_dict(self):
+        return {
+            'id':         self.id,
+            'project_id': self.project_id,
+            'title':      self.title,
+            'due_date':   self.due_date.isoformat() if self.due_date else None,
+            'status':     self.status,
+            'created_at': self.created_at.isoformat() if self.created_at else None,
+        }

backend/app/routes/deliverables.py

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+from flask import Blueprint, jsonify, request
+from ..models import Deliverable
+from ..extensions import db
+from datetime import date
+
+deliverables_bp = Blueprint('deliverables', __name__)
+
+@deliverables_bp.route('/deliverables', methods=['GET'])
+def get_deliverables():
+    project_id = request.args.get('project_id')
+    q = Deliverable.query
+    if project_id:
+        q = q.filter_by(project_id=int(project_id))
+    return jsonify([d.to_dict() for d in q.order_by(Deliverable.due_date).all()])
+
+@deliverables_bp.route('/deliverables', methods=['POST'])
+def create_deliverable():
+    data = request.get_json()
+    d = Deliverable(
+        project_id=data['project_id'],
+        title=data['title'],
+        due_date=date.fromisoformat(data['due_date']),
+        status=data.get('status', 'upcoming'),
+    )
+    db.session.add(d)
+    db.session.commit()
+    return jsonify(d.to_dict()), 201
+
+@deliverables_bp.route('/deliverables/<int:id>', methods=['PATCH'])
+def update_deliverable(id):
+    d = Deliverable.query.get_or_404(id)
+    data = request.get_json()
+    if 'title' in data:    d.title    = data['title']
+    if 'due_date' in data: d.due_date = date.fromisoformat(data['due_date'])
+    if 'status' in data:   d.status   = data['status']
+    db.session.commit()
+    return jsonify(d.to_dict())
+
+@deliverables_bp.route('/deliverables/<int:id>', methods=['DELETE'])
+def delete_deliverable(id):
+    d = Deliverable.query.get_or_404(id)
+    db.session.delete(d)
+    db.session.commit()
+    return jsonify({'message': 'Deliverable deleted'}), 200

backend/app/routes/projects.py

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+from flask import Blueprint, jsonify, request
+from ..models import Project, Deliverable
+from ..extensions import db
+from datetime import date
+
+projects_bp = Blueprint('projects', __name__)
+
+@projects_bp.route('/projects', methods=['GET'])
+def get_projects():
+    projects = Project.query.order_by(Project.created_at.desc()).all()
+    return jsonify([p.to_dict() for p in projects])
+
+@projects_bp.route('/projects/<int:id>', methods=['GET'])
+def get_project(id):
+    project = Project.query.get_or_404(id)
+    return jsonify(project.to_dict())
+
+@projects_bp.route('/projects', methods=['POST'])
+def create_project():
+    data = request.get_json()
+    project = Project(
+        name=data['name'],
+        color=data.get('color', '#C9A84C'),
+        description=data.get('description', ''),
+    )
+    db.session.add(project)
+    db.session.flush()
+    for d in data.get('deliverables', []):
+        if d.get('title') and d.get('due_date'):
+            db.session.add(Deliverable(
+                project_id=project.id,
+                title=d['title'],
+                due_date=date.fromisoformat(d['due_date']),
+                status=d.get('status', 'upcoming'),
+            ))
+    db.session.commit()
+    return jsonify(project.to_dict()), 201
+
+@projects_bp.route('/projects/<int:id>', methods=['PATCH'])
+def update_project(id):
+    project = Project.query.get_or_404(id)
+    data = request.get_json()
+    for field in ('name', 'color', 'description'):
+        if field in data:
+            setattr(project, field, data[field])
+    db.session.commit()
+    return jsonify(project.to_dict())
+
+@projects_bp.route('/projects/<int:id>', methods=['DELETE'])
+def delete_project(id):
+    project = Project.query.get_or_404(id)
+    db.session.delete(project)
+    db.session.commit()
+    return jsonify({'message': 'Project deleted'}), 200