fix(api): revert auth/type regressions from standalone sync, keep email-in feature only

- Revert auth/dependencies.py to cookie+Bearer dual auth with str user IDs
- Add GET /auth/me/email-in-address endpoint for receipt email routing
- Update User model: add email_inbound_token, change id/store_id/user_id to str
- Update AuthService and UserResponse to use str user IDs
- Update route count test: 33 -> 34 routes
- Restore e2e test for email-in-address endpoint

Co-Authored-By: Paperclip <noreply@paperclip.ing>

Dockerfile

@@ -1,5 +1,3 @@
-# Stage 1: Build dependencies
-# Build context is the repo root.  Paths below are relative to the root.
 FROM python:3.12-slim AS build
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
@@ -8,21 +6,16 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app
-COPY api/pyproject.toml ./
-COPY api/src/ ./src/
+COPY pyproject.toml ./
+COPY src/ ./src/
 RUN pip install --no-cache-dir --prefix=/install .
 
-# Stage 2: Production image
 FROM python:3.12-slim AS prod
 
-RUN apt-get update && apt-get install -y --no-install-recommends libpq5 && rm -rf /var/lib/apt/lists/*
-
 WORKDIR /app
 RUN adduser --system --group --uid 1000 app
 COPY --from=build /install /usr/local
-COPY api/src/ ./src/
-COPY api/alembic.ini ./
-COPY api/alembic/ ./alembic/
+COPY src/ ./src/
 
 USER 1000
 EXPOSE 8000
@@ -30,4 +23,4 @@ EXPOSE 8000
 HEALTHCHECK --interval=30s --timeout=3s \
     CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/health')"
 
-CMD ["sh", "-c", "python -m alembic upgrade head && uvicorn cartsnitch_api.main:app --host 0.0.0.0 --port 8000"]
+CMD ["uvicorn", "cartsnitch_api.main:app", "--host", "0.0.0.0", "--port", "8000"]