feat: release v0.2.0 profiles, chat, freeze, and bots

Ship the product pass on the v0.1.3 schema with additive migrations, a replica migration lock, and bot accounts kept out of people lists.

backend/internal/api/me_export_time_test.go

@@ -0,0 +1,27 @@
+package api
+
+import (
+	"testing"
+	"time"
+)
+
+func TestGregorianToJalaliKnownDates(t *testing.T) {
+	cases := []struct {
+		y, m, d    int
+		jy, jm, jd int
+	}{
+		{2026, 3, 21, 1405, 1, 1},
+		{2026, 10, 10, 1405, 7, 18},
+		{2024, 3, 20, 1403, 1, 1},
+	}
+	for _, c := range cases {
+		jy, jm, jd := gregorianToJalali(c.y, c.m, c.d)
+		if jy != c.jy || jm != c.jm || jd != c.jd {
+			t.Fatalf("%04d-%02d-%02d: got %d-%d-%d want %d-%d-%d", c.y, c.m, c.d, jy, jm, jd, c.jy, c.jm, c.jd)
+		}
+	}
+	stamp := formatJalaliStamp(time.Date(2026, 3, 21, 12, 0, 0, 0, time.UTC))
+	if stamp != "۱ فروردین · ۱۵:۳۰" {
+		t.Fatalf("stamp: %q", stamp)
+	}
+}