Scope WRS helpers; update .gitignore

Moved WRS_ASSETS, WRS1_SPACECRAFT and related helper functions (imageStringProperty, isWrs1LandsatImage, wrsCollectionForSystem, matchCleanWrsFeature) into exports.createFunction in Algorithms/Landsat/cropToOverlapFree to avoid top-level globals. Updated .gitignore to ignore local logs, coverage/ and README.md. Changes preserve existing behavior while reducing global scope pollution.

Author: mgravey

.gitignore

@@ -23,3 +23,8 @@ yarn-error.log*
 doc.json
 openEEL_doc
 loadAll
+
+# Local reports and coverage output.
+*.log
+coverage/
+README.md

Algorithms/Landsat/cropToOverlapFree

@@ -1,12 +1,5 @@
 // SPDX-License-Identifier: MIT
 
-var WRS_ASSETS = {
-  WRS1: 'projects/openearthengine/assets/WRS/LANDSAT_WRS1_CUT_10KM',
-  WRS2: 'projects/openearthengine/assets/WRS/LANDSAT_WRS2_CUT_10KM'
-};
-
-var WRS1_SPACECRAFT = ee.List(['LANDSAT_1', 'LANDSAT_2', 'LANDSAT_3']);
-
 var inputs = [
   {
     name: 'landsatCollection',
@@ -32,42 +25,6 @@ var reference = {
   contributors: ['Mathieu Gravey']
 };
 
-function imageStringProperty(image, propertyName, fallback) {
-  return ee.String(ee.Algorithms.If(
-    image.propertyNames().contains(propertyName),
-    image.get(propertyName),
-    fallback
-  ));
-}
-
-function isWrs1LandsatImage(image) {
-  return WRS1_SPACECRAFT.contains(imageStringProperty(image, 'SPACECRAFT_ID', ''));
-}
-
-function wrsCollectionForSystem(isWrs1) {
-  var wrs1 = ee.FeatureCollection(WRS_ASSETS.WRS1);
-  var wrs2 = ee.FeatureCollection(WRS_ASSETS.WRS2);
-
-  return ee.FeatureCollection(ee.Algorithms.If(
-    isWrs1,
-    wrs1,
-    wrs2
-  ));
-}
-
-function matchCleanWrsFeature(image, wrs) {
-  var path = ee.Number(image.get('WRS_PATH'));
-  var row = ee.Number(image.get('WRS_ROW'));
-
-  return wrs.filter(ee.Filter.and(
-    ee.Filter.eq('PATH', path),
-    ee.Filter.or(
-      ee.Filter.eq('ROW', row),
-      ee.Filter.eq('ROW_', row)
-    )
-  ));
-}
-
 exports.createDocumentation = function() {
   return {
     inputs: inputs,
@@ -76,6 +33,49 @@ exports.createDocumentation = function() {
 };
 
 exports.createFunction = function(internal, relPath, oeel) {
+  var WRS_ASSETS = {
+    WRS1: 'projects/openearthengine/assets/WRS/LANDSAT_WRS1_CUT_10KM',
+    WRS2: 'projects/openearthengine/assets/WRS/LANDSAT_WRS2_CUT_10KM'
+  };
+
+  var WRS1_SPACECRAFT = ee.List(['LANDSAT_1', 'LANDSAT_2', 'LANDSAT_3']);
+
+  function imageStringProperty(image, propertyName, fallback) {
+    return ee.String(ee.Algorithms.If(
+      image.propertyNames().contains(propertyName),
+      image.get(propertyName),
+      fallback
+    ));
+  }
+
+  function isWrs1LandsatImage(image) {
+    return WRS1_SPACECRAFT.contains(imageStringProperty(image, 'SPACECRAFT_ID', ''));
+  }
+
+  function wrsCollectionForSystem(isWrs1) {
+    var wrs1 = ee.FeatureCollection(WRS_ASSETS.WRS1);
+    var wrs2 = ee.FeatureCollection(WRS_ASSETS.WRS2);
+
+    return ee.FeatureCollection(ee.Algorithms.If(
+      isWrs1,
+      wrs1,
+      wrs2
+    ));
+  }
+
+  function matchCleanWrsFeature(image, wrs) {
+    var path = ee.Number(image.get('WRS_PATH'));
+    var row = ee.Number(image.get('WRS_ROW'));
+
+    return wrs.filter(ee.Filter.and(
+      ee.Filter.eq('PATH', path),
+      ee.Filter.or(
+        ee.Filter.eq('ROW', row),
+        ee.Filter.eq('ROW_', row)
+      )
+    ));
+  }
+
   return function() {
     var inputDictionary = internal.readInputs(
       Array.prototype.slice.call(arguments, 0),
@@ -96,4 +96,4 @@ exports.createFunction = function(internal, relPath, oeel) {
       return image.clip(cleanWrsFeature.geometry());
     });
   };
-};
+};