Implement default precision=0 for upstream weatherapi endpoints

internal/adapters/weatherapi/client_test.go

@@ -135,9 +135,15 @@ func TestFetchBundleBuildsExpectedQueries(t *testing.T) {
 			t.Fatalf("request %q missing units=us", rawURL)
 		}
 		if strings.HasPrefix(rawURL, "/forecast/") {
-			if !strings.Contains(rawURL, "precision=1") || !strings.Contains(rawURL, "tz=America%2FChicago") {
+			if !strings.Contains(rawURL, "precision=0") || !strings.Contains(rawURL, "tz=America%2FChicago") {
 				t.Fatalf("forecast request %q missing precision or tz", rawURL)
 			}
+			continue
+		}
+		if rawURL == defaultWarmupEndpoint || strings.HasPrefix(rawURL, defaultWarmupEndpoint+"?") || strings.HasPrefix(rawURL, "/observations?") {
+			if !strings.Contains(rawURL, "precision=0") {
+				t.Fatalf("request %q missing precision=0", rawURL)
+			}
 		}
 	}
 }

internal/config/config_test.go

@@ -28,6 +28,9 @@ func TestDefaults(t *testing.T) {
 	if cfg.WeatherAPI.Format != "json" {
 		t.Fatalf("Format = %q, want json", cfg.WeatherAPI.Format)
 	}
+	if cfg.WeatherAPI.Precision != 0 {
+		t.Fatalf("Precision = %d, want 0", cfg.WeatherAPI.Precision)
+	}
 	if cfg.Location.ID != "home" || cfg.Location.Name != "Brentwood" || cfg.Location.Region != "St. Louis Metro" {
 		t.Fatalf("Location = %#v, want home/Brentwood/St. Louis Metro", cfg.Location)
 	}

internal/config/defaults.go

@@ -8,7 +8,7 @@ func Defaults() Config {
 	return Config{
 		WeatherAPI: WeatherAPIConfig{
 			Timeout:   10 * time.Second,
-			Precision: 1,
+			Precision: 0,
 			Units:     "us",
 			Timezone:  "America/Chicago",
 			Format:    "json",