feat: add more roles (tech_lead, scrum_master, product_owner, designer, qa)

- Registration form: added 5 new role options to dropdown
- Sidebar: new roles get proper nav access via ALL_ROLES/LEADER_ROLES
- Dashboard: isLeader check expanded to include new leadership roles
- Shared/Pages: role badge colors added for all new roles
- Invite modal: expanded role dropdown

server/Dockerfile

@@ -2,8 +2,8 @@ FROM node:22-alpine
 
 WORKDIR /app
 
-COPY package.json package-lock.json* ./
-RUN npm install
+COPY package*.json ./
+RUN npm ci --only=production
 
 COPY . .