Initial commit: smartrun MVP

Garmin run classification and progression tracker. Go backend (MCP
client to mcp-garmin, SQLite store, deterministic rule engine, REST
API) and React/TS frontend (Dashboard, Review Queue, Workout Kinds).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

backend/internal/api/review.go

@@ -0,0 +1,78 @@
+package api
+
+import (
+	"encoding/json"
+	"net/http"
+	"strconv"
+
+	"github.com/go-chi/chi/v5"
+
+	"smartrun/backend/internal/store"
+)
+
+func (s *Server) handleReviewQueue(w http.ResponseWriter, r *http.Request) {
+	queue, err := s.DB.ReviewQueue(r.Context())
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+
+	type item struct {
+		store.KindAssignment
+		Activity store.Activity `json:"activity"`
+	}
+	items := make([]item, 0, len(queue))
+	for _, a := range queue {
+		activity, ok, err := s.DB.GetActivity(r.Context(), a.ActivityID)
+		if err != nil {
+			writeError(w, http.StatusInternalServerError, err.Error())
+			return
+		}
+		if !ok {
+			continue
+		}
+		items = append(items, item{KindAssignment: a, Activity: activity})
+	}
+	writeJSON(w, http.StatusOK, items)
+}
+
+func (s *Server) handleResolveReview(w http.ResponseWriter, r *http.Request) {
+	activityID, err := strconv.ParseInt(chi.URLParam(r, "activityID"), 10, 64)
+	if err != nil {
+		writeError(w, http.StatusBadRequest, "invalid activity id")
+		return
+	}
+
+	var body struct {
+		WorkoutKindID int64 `json:"workout_kind_id"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
+		writeError(w, http.StatusBadRequest, "invalid request body")
+		return
+	}
+	if body.WorkoutKindID == 0 {
+		writeError(w, http.StatusBadRequest, "workout_kind_id is required")
+		return
+	}
+
+	if _, ok, err := s.DB.GetWorkoutKind(r.Context(), body.WorkoutKindID); err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	} else if !ok {
+		writeError(w, http.StatusBadRequest, "workout kind not found")
+		return
+	}
+
+	kindID := body.WorkoutKindID
+	if _, err := s.DB.InsertKindAssignment(r.Context(), store.KindAssignment{
+		ActivityID:         activityID,
+		WorkoutKindID:      &kindID,
+		AssignmentSource:   store.AssignmentSourceManual,
+		Status:             store.AssignmentStatusAssigned,
+		CandidateKindsJSON: "[]",
+	}); err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]string{"status": "resolved"})
+}