build: container paths point at roundtable package

Keeps the image buildable after the package rename. Image name, container
name, compose service, and env vars still flip in PR 4.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Dockerfile

@@ -16,7 +16,7 @@ RUN pip install --upgrade pip
 WORKDIR /app
 
 COPY pyproject.toml .
-COPY fabledscryer/ fabledscryer/
+COPY roundtable/ roundtable/
 RUN pip install --no-cache-dir .
 
 COPY alembic.ini .
@@ -34,4 +34,4 @@ RUN useradd -m -u 1000 app \
 EXPOSE 5000
 
 ENTRYPOINT ["/entrypoint.sh"]
-CMD ["fabledscryer", "--host", "0.0.0.0", "--port", "5000"]
+CMD ["roundtable", "--host", "0.0.0.0", "--port", "5000"]