feat: explorer API, wallet, CCIP scripts, and config refresh

- Backend REST/gateway/track routes, analytics, Blockscout proxy paths.
- Frontend wallet and liquidity surfaces; MetaMask token list alignment.
- Deployment docs, verification scripts, address inventory updates.

Check: go build ./... under backend/ (pass).
Made-with: Cursor

backend/api/rest/routes_proxy_test.go

@@ -0,0 +1,54 @@
+package rest
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestRouteProxyPreservesTargetBasePath(t *testing.T) {
+	var gotPath string
+	var gotQuery string
+	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		gotPath = r.URL.Path
+		gotQuery = r.URL.RawQuery
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = w.Write([]byte(`{"ok":true}`))
+	}))
+	defer upstream.Close()
+
+	t.Setenv("TOKEN_AGGREGATION_API_BASE", upstream.URL+"/token-aggregation")
+
+	server := NewServer(nil, 138)
+	req := httptest.NewRequest(http.MethodGet, "/api/v1/routes/tree?chainId=138&amountIn=1000000", nil)
+	w := httptest.NewRecorder()
+
+	server.handleRouteDecisionTree(w, req)
+
+	require.Equal(t, http.StatusOK, w.Code)
+	require.Equal(t, "/token-aggregation/api/v1/routes/tree", gotPath)
+	require.Equal(t, "chainId=138&amountIn=1000000", gotQuery)
+}
+
+func TestRouteProxyHandlesBaseURLWithoutPath(t *testing.T) {
+	var gotPath string
+	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		gotPath = r.URL.Path
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = w.Write([]byte(`{"ok":true}`))
+	}))
+	defer upstream.Close()
+
+	t.Setenv("TOKEN_AGGREGATION_API_BASE", upstream.URL)
+
+	server := NewServer(nil, 138)
+	req := httptest.NewRequest(http.MethodGet, "/api/v1/routes/depth?chainId=138", nil)
+	w := httptest.NewRecorder()
+
+	server.handleRouteDepth(w, req)
+
+	require.Equal(t, http.StatusOK, w.Code)
+	require.Equal(t, "/api/v1/routes/depth", gotPath)
+}