Merge pull request #81 from fparrav/main

fix: improve timezone support and 30-day chart format

Author: nullure

backend/Dockerfile

@@ -38,6 +38,9 @@ FROM node:20-alpine AS production
 
 WORKDIR /app
 
+# Install timezone data for proper TZ support
+RUN apk add --no-cache tzdata
+
 # Create a dedicated non-root user for security
 RUN addgroup -g 1001 -S appgroup \
  && adduser -u 1001 -S appuser -G appgroup

backend/src/server/routes/dashboard.ts

@@ -301,12 +301,14 @@ export function dash(app: any) {
                     : "strftime('%Y-%m-%d', datetime(created_at/1000, 'unixepoch', 'localtime'))";
                 timeKey = "day";
             } else {
-                // For longer periods, group by week (ISO week format for consistency)
+                // For longer periods (30 days), group by day showing month-day
                 displayFormat = is_pg
-                    ? "to_char(to_timestamp(created_at/1000), 'IYYY-\"W\"IW')"
-                    : "strftime('%Y-W%W', datetime(created_at/1000, 'unixepoch', 'localtime'))";
-                sortFormat = displayFormat;
-                timeKey = "week";
+                    ? "to_char(to_timestamp(created_at/1000), 'MM-DD')"
+                    : "strftime('%m-%d', datetime(created_at/1000, 'unixepoch', 'localtime'))";
+                sortFormat = is_pg
+                    ? "to_char(to_timestamp(created_at/1000), 'YYYY-MM-DD')"
+                    : "strftime('%Y-%m-%d', datetime(created_at/1000, 'unixepoch', 'localtime'))";
+                timeKey = "day";
             }
 
             const tl = await all_async(