feat: implement Phase 1 Foundation for AutoScheduler GTD System

- Initialize npm workspaces monorepo (backend, frontend, shared-types)
- Scaffold NestJS backend with modules: Auth, Users, Tasks, Projects, Inbox, Health
- Create React frontend with Vite, TailwindCSS, Radix UI
- Implement TypeORM entities: User, InboxItem, Task, Project
- Add JWT authentication with Passport.js and bcrypt
- Build Inbox capture API (POST /inbox, GET /inbox, POST /inbox/:id/process)
- Create Inbox UI with quick-add form and GTD processing workflow modal
- Configure Docker Compose stack (postgres, redis, backend, frontend)
- Add health check endpoint with database/Redis status
- Write unit tests for auth and inbox services

Phase 1 features complete:
- GTD Inbox Capture: Manual tasks via web form quick-add
- GTD Processing Workflow: Interactive inbox processing interface

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/backend/Dockerfile

@@ -0,0 +1,32 @@
+FROM node:20-alpine AS base
+RUN corepack enable && corepack prepare pnpm@9.0.0 --activate
+
+FROM base AS builder
+WORKDIR /app
+
+COPY package.json pnpm-workspace.yaml pnpm-lock.yaml* ./
+COPY packages/shared-types/package.json ./packages/shared-types/
+COPY packages/backend/package.json ./packages/backend/
+
+RUN pnpm install --frozen-lockfile || pnpm install
+
+COPY packages/shared-types ./packages/shared-types
+COPY packages/backend ./packages/backend
+
+RUN pnpm --filter @nick-tracker/shared-types build
+RUN pnpm --filter @nick-tracker/backend build
+
+FROM base AS runner
+WORKDIR /app
+
+COPY --from=builder /app/node_modules ./node_modules
+COPY --from=builder /app/packages/shared-types/dist ./packages/shared-types/dist
+COPY --from=builder /app/packages/shared-types/package.json ./packages/shared-types/
+COPY --from=builder /app/packages/backend/dist ./packages/backend/dist
+COPY --from=builder /app/packages/backend/package.json ./packages/backend/
+COPY --from=builder /app/packages/backend/node_modules ./packages/backend/node_modules
+
+WORKDIR /app/packages/backend
+
+EXPOSE 3000
+CMD ["node", "dist/main.js"]