feat: release v0.1.3 chat, profiles, and media

Keep read receipts for the other person only, and let photos, voice, and files stay cached until they are actually replaced.

backend/internal/api/profile.go

@@ -0,0 +1,42 @@
+package api
+
+import (
+	"errors"
+	"net/http"
+
+	"pargar/backend/internal/store"
+)
+
+func (s *Server) handlePublicProfile(w http.ResponseWriter, r *http.Request) {
+	id := routeID(r, "id")
+	if id <= 0 {
+		writeErr(w, http.StatusNotFound, "کاربر پیدا نشد")
+		return
+	}
+	u, err := s.store.GetUserByID(r.Context(), id)
+	if err != nil {
+		if errors.Is(err, store.ErrNotFound) {
+			writeErr(w, http.StatusNotFound, "کاربر پیدا نشد")
+			return
+		}
+		writeErr(w, http.StatusInternalServerError, "بارگذاری پروفایل ممکن نشد")
+		return
+	}
+	s.signUserMedia(u)
+	writeJSON(w, http.StatusOK, map[string]any{
+		"user": map[string]any{
+			"id":            u.ID,
+			"name":          u.Name,
+			"username":      u.Username,
+			"role":          u.Role,
+			"xp":            u.XP,
+			"hearts":        u.Hearts,
+			"streakCurrent": u.StreakCurrent,
+			"streakLongest": u.StreakLongest,
+			"avatarVariant": u.AvatarVariant,
+			"avatarPalette": u.AvatarPalette,
+			"avatarPhoto":   u.AvatarPhoto,
+			"isLocked":      u.IsLocked,
+		},
+	})
+}