Add production deployment tooling: Nginx, Gitea, prod Dockerfiles

Sets up everything needed to deploy behind Cloudflare with a self-hosted
git server: multi-stage prod Dockerfiles (non-root), docker-compose.prod.yml
(Postgres/Redis with no host ports, Nginx reverse proxy, Gitea with
public-read/admin-write access control), scripts/bootstrap-env.sh to
auto-generate required secrets on first clone, and DEPLOYMENT.md covering
the full runbook. Provider API keys (Anthropic/Brave/NinjaPear/USPTO/
Turnstile) are deliberately kept out of .env in favor of the existing
DB-backed Settings UI, so the public repo stays safe to expose.

Also fixes two bugs only surfaced by live-testing the prod stack: Celery
beat couldn't write its schedule file as a non-root user, and Gitea's
embedded SSH server conflicted with the base image's own sshd on port 22.

Co-Authored-By: Claude Sonnet 5 <[email protected]>

infrastructure/docker/api.Dockerfile.prod

@@ -0,0 +1,44 @@
+# Production image for api/worker/beat - no bind mounts, no --reload, no
+# dev-only dependencies. See infrastructure/docker/api.Dockerfile for the
+# dev image (kept separate and untouched).
+
+FROM python:3.12-slim AS builder
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    PIP_NO_CACHE_DIR=1
+
+WORKDIR /app
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN python -m venv /venv
+ENV PATH="/venv/bin:$PATH"
+
+COPY apps/api /app
+RUN pip install --upgrade pip && pip install .
+
+
+FROM python:3.12-slim AS runtime
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    PATH="/venv/bin:$PATH"
+
+RUN useradd --create-home --uid 1000 appuser
+
+WORKDIR /app
+COPY --from=builder /venv /venv
+# --chown so appuser can actually write here - celery beat needs to write
+# its schedule state file (celerybeat-schedule) into the working directory,
+# and a plain COPY leaves everything root-owned even after USER switches
+# the running process to appuser.
+COPY --chown=appuser:appuser apps/api /app
+
+USER appuser
+
+EXPOSE 8000
+
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]

infrastructure/docker/web.Dockerfile.prod

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+# Production image for the Next.js frontend - built with `next build`
+# (output: "standalone" in next.config.js), served with `node server.js`,
+# not `next dev`/`npm start`. See infrastructure/docker/web.Dockerfile for
+# the dev image (kept separate and untouched).
+
+FROM node:20-alpine AS deps
+WORKDIR /app
+COPY apps/web/package.json apps/web/package-lock.json* ./
+RUN npm ci
+
+
+FROM node:20-alpine AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY apps/web ./
+# Baked into the browser bundle at build time - must be the public URL the
+# *browser* will use, not a Docker-internal service name. See .env.example.
+ARG NEXT_PUBLIC_API_URL
+ARG NEXT_PUBLIC_GIT_REPO_URL
+ENV NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL} \
+    NEXT_PUBLIC_GIT_REPO_URL=${NEXT_PUBLIC_GIT_REPO_URL}
+RUN npm run build
+
+
+FROM node:20-alpine AS runner
+WORKDIR /app
+ENV NODE_ENV=production
+RUN addgroup --system --gid 1001 nodejs && adduser --system --uid 1001 nextjs
+
+# output:"standalone" already traces only the files actually needed at
+# runtime - no full node_modules copy required.
+COPY --from=builder /app/.next/standalone ./
+COPY --from=builder /app/.next/static ./.next/static
+COPY --from=builder /app/public ./public
+
+USER nextjs
+EXPOSE 3000
+
+CMD ["node", "server.js"]