feat: redesign my webiste from scratch

- remove hugo and paper box theme
- inspiration https://jay.fish
- use astro based system

Signed-off-by: Avinal Kumar <avinal.xlvii@gmail.com>

src/lib/activity.ts

@@ -0,0 +1,78 @@
+import type { ContributionData, ContributionDay } from "./github";
+import type { WakaTimeData } from "./wakatime";
+
+export interface ActivityDay {
+  date: string;
+  githubCount: number;
+  githubLevel: number; // 0-4
+  wakaSeconds: number;
+  wakaText: string;
+  /** Combined level 0-4 for coloring (higher of the two sources) */
+  combinedLevel: number;
+}
+
+export interface ActivityData {
+  weeks: ActivityDay[][];
+  github: {
+    total: number;
+  };
+  wakatime: {
+    totalText: string;
+    dailyAvgText: string;
+    bestDayText: string;
+    available: boolean;
+  };
+}
+
+function wakaLevel(seconds: number): number {
+  if (seconds <= 0) return 0;
+  if (seconds < 1800) return 1; // < 30min
+  if (seconds < 3600) return 2; // < 1h
+  if (seconds < 7200) return 3; // < 2h
+  return 4; // 2h+
+}
+
+/**
+ * Merge GitHub contributions and WakaTime daily summaries into
+ * a unified per-day activity dataset for the graph.
+ */
+export function mergeActivity(
+  gh: ContributionData | null,
+  waka: WakaTimeData | null,
+): ActivityData {
+  const weeks: ActivityDay[][] = [];
+
+  if (gh) {
+    for (const week of gh.weeks) {
+      const merged: ActivityDay[] = [];
+      for (const day of week) {
+        const ws = waka?.days.get(day.date);
+        const wSecs = ws?.totalSeconds ?? 0;
+        const wLvl = wakaLevel(wSecs);
+
+        merged.push({
+          date: day.date,
+          githubCount: day.count,
+          githubLevel: day.level,
+          wakaSeconds: wSecs,
+          wakaText: ws?.text ?? "0m",
+          combinedLevel: Math.max(day.level, wLvl),
+        });
+      }
+      weeks.push(merged);
+    }
+  }
+
+  return {
+    weeks,
+    github: {
+      total: gh?.total ?? 0,
+    },
+    wakatime: {
+      totalText: waka?.totalText ?? "—",
+      dailyAvgText: waka?.dailyAvgText ?? "—",
+      bestDayText: waka?.bestDayText ?? "—",
+      available: waka !== null,
+    },
+  };
+}