feat: Add team registration executable and API for auto-registration.

Dockerfile

@@ -88,8 +88,13 @@ WORKDIR /app
 # Copy binary from builder
 COPY --from=backend-builder /app/codex-pool /app/codex-pool
 
+# Copy team-reg executable (if exists) - for auto-registration feature
+# 注意: 需要提供 Linux 版本的 team-reg 可执行文件
+COPY backend/team-reg* /app/
+
 # Create data directory
-RUN mkdir -p /app/data
+RUN mkdir -p /app/data && \
+    chmod +x /app/team-reg* 2>/dev/null || true
 
 # Expose port
 EXPOSE 8848
@@ -100,3 +105,4 @@ HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
 
 # Run the application
 ENTRYPOINT ["/app/codex-pool"]
+