delivery slot api creation

Dockerfile

@@ -65,6 +65,15 @@ ENV NUTRITION_BASE=https://mcp.nearle.ai.in/api
 # config.Load applies: production insists on a signing secret and never falls
 # back to localhost values. Every other real value comes from the platform's
 # environment settings, exactly as before.
+# The clock every business rule is decided on.
+#
+# tzdata was already installed and nothing set TZ, so the container ran UTC.
+# That was invisible while time.Now() only ever stamped records — nothing
+# compared a stored time of day against the current one. Delivery windows are
+# the first rule that does: a shop setting morning as 08:00-10:00 would have had
+# it close at 10:00 UTC, which is 15:30 where the shop is standing.
+ENV TZ=Asia/Kolkata
+
 ENV APP_ENV=production
 
 # Must match APP_PORT in the platform's environment (1009 in production).