diff --git a/GEMINI_Svelte_and_Me.md b/GEMINI_Svelte_and_Me.md
index cd787a9d..9fe1a1ef 100644
--- a/GEMINI_Svelte_and_Me.md
+++ b/GEMINI_Svelte_and_Me.md
@@ -83,4 +83,17 @@ My efficiency heavily relies on the `replace` tool, and precision is paramount.
 - **Consult Svelte Documentation:** The Svelte compiler often provides helpful links (`https://svelte.dev/e/js_parse_error`) which should be a first point of reference if the error is unfamiliar.
 - **Re-read File Content:** If a `replace` operation fails or produces unexpected results, immediately use `read_file` to verify the exact state of the file before attempting another change.
 
-By following these guidelines, I aim to significantly reduce errors and improve my performance in Svelte development tasks.
+## 5. Safe Property Binding (Preventing `props_invalid_value`)
+
+Svelte 5 enforces strict contracts for bound properties (`bind:prop`). If a component expects a property to have a fallback/default value, you cannot bind `undefined` to it.
+
+- **The Error:** `Uncaught Svelte error: props_invalid_value. Cannot do bind:prop={undefined} when prop has a fallback value`.
+- **The Cause:** Attempting to bind a variable that is currently `undefined` to a component prop that has a default value (e.g., `let { prop = false } = $props()`). Svelte cannot determine whether to use the bound `undefined` or the component's internal default, so it throws an error.
+- **The Fix:** **Always initialize bound variables.**
+    - **Initialization:** Ensure the variable you are binding to is initialized to a valid value (matching the prop's type) *before* the component mounts.
+        - Example: `let myVar = $state(false);` instead of `let myVar = $state();`.
+    - **Data Fetching:** If the data comes from an asynchronous source (API, DB), ensure the object properties have default values *immediately* upon assignment, even before the data is fully populated.
+        - **Good:** `$slct.obj = { ...apiResult, myBoundProp: apiResult.myBoundProp ?? false };`
+        - **Bad:** `$slct.obj = apiResult;` (if `apiResult.myBoundProp` is missing/undefined).
+    - **Updates/resets:** When resetting or updating the object, explicitly re-initialize the bound properties.
+        - `obj = {};` -> `obj = { myBoundProp: false };`
\ No newline at end of file
diff --git a/documentation/OLD_README_guidelines_ui_ux.md b/documentation/old/OLD_README_guidelines_ui_ux.md
similarity index 100%
rename from documentation/OLD_README_guidelines_ui_ux.md
rename to documentation/old/OLD_README_guidelines_ui_ux.md
diff --git a/documentation/OLD_README_guidelines_v1.md b/documentation/old/OLD_README_guidelines_v1.md
similarity index 100%
rename from documentation/OLD_README_guidelines_v1.md
rename to documentation/old/OLD_README_guidelines_v1.md
diff --git a/documentation/OLD_README_guidelines_v2.md b/documentation/old/OLD_README_guidelines_v2.md
similarity index 100%
rename from documentation/OLD_README_guidelines_v2.md
rename to documentation/old/OLD_README_guidelines_v2.md
diff --git a/src/routes/idaa/(idaa)/archives/[archive_id]/ae_idaa_comp__archive_content_obj_id_edit.svelte b/src/routes/idaa/(idaa)/archives/[archive_id]/ae_idaa_comp__archive_content_obj_id_edit.svelte
index 9b8b5d4a..c08c60af 100644
--- a/src/routes/idaa/(idaa)/archives/[archive_id]/ae_idaa_comp__archive_content_obj_id_edit.svelte
+++ b/src/routes/idaa/(idaa)/archives/[archive_id]/ae_idaa_comp__archive_content_obj_id_edit.svelte
@@ -47,6 +47,24 @@
     if ($idaa_slct.archive_content_id) {
         console.log(`Archive Content ID selected: ${$idaa_slct.archive_content_id}`);
         console.log(`Archive Content Object selected: ${$idaa_slct.archive_content_obj}`);
+        if (
+            $idaa_slct.archive_content_obj &&
+            $idaa_slct.archive_content_obj.upload_complete === undefined
+        ) {
+            $idaa_slct.archive_content_obj.upload_complete = false;
+        }
+        if (
+            $idaa_slct.archive_content_obj &&
+            !Array.isArray($idaa_slct.archive_content_obj.hosted_file_id_li)
+        ) {
+            $idaa_slct.archive_content_obj.hosted_file_id_li = [];
+        }
+        if (
+            $idaa_slct.archive_content_obj &&
+            !Array.isArray($idaa_slct.archive_content_obj.hosted_file_obj_li)
+        ) {
+            $idaa_slct.archive_content_obj.hosted_file_obj_li = [];
+        }
     } else {
         $idaa_slct.archive_content_id = null;
         $idaa_slct.archive_content_obj = {
@@ -71,7 +89,10 @@
             hide: false,
             priority: null,
             sort: null,
-            notes: null
+            notes: null,
+            upload_complete: false,
+            hosted_file_id_li: [],
+            hosted_file_obj_li: []
         };
         console.log(`Archive Content Object started: ${$idaa_slct.archive_content_obj}`);
     }
@@ -251,6 +272,9 @@
                     $idaa_slct.archive_content_obj = archive_content_obj_create_result;
                     $idaa_slct.archive_content_obj.archive_content_id =
                         archive_content_obj_create_result.archive_content_id_random; // This is because we need use the string ID, not int ID.
+                    $idaa_slct.archive_content_obj.upload_complete = false;
+                    $idaa_slct.archive_content_obj.hosted_file_id_li = [];
+                    $idaa_slct.archive_content_obj.hosted_file_obj_li = [];
 
                     return archive_content_obj_create_result;
                 })
@@ -321,6 +345,13 @@
             .then(function (archive_content_obj_update_result) {
                 // $idaa_slct.archive_content_obj = $lq__archive_content_obj;
                 $idaa_slct.archive_content_obj = archive_content_obj_update_result;
+                $idaa_slct.archive_content_obj.upload_complete = true;
+                if (!Array.isArray($idaa_slct.archive_content_obj.hosted_file_id_li)) {
+                    $idaa_slct.archive_content_obj.hosted_file_id_li = [];
+                }
+                if (!Array.isArray($idaa_slct.archive_content_obj.hosted_file_obj_li)) {
+                    $idaa_slct.archive_content_obj.hosted_file_obj_li = [];
+                }
             })
             .catch(function (error: any) {
                 console.log('Something went wrong.');
@@ -364,6 +395,13 @@
                 .then(function (archive_content_obj_update_result) {
                     // $idaa_slct.archive_content_obj = $lq__archive_content_obj;
                     $idaa_slct.archive_content_obj = archive_content_obj_update_result;
+                    $idaa_slct.archive_content_obj.upload_complete = false;
+                    if (!Array.isArray($idaa_slct.archive_content_obj.hosted_file_id_li)) {
+                        $idaa_slct.archive_content_obj.hosted_file_id_li = [];
+                    }
+                    if (!Array.isArray($idaa_slct.archive_content_obj.hosted_file_obj_li)) {
+                        $idaa_slct.archive_content_obj.hosted_file_obj_li = [];
+                    }
                 })
                 .catch(function (error: any) {
                     console.log('Something went wrong.');
@@ -620,6 +658,10 @@
                                         $idaa_slct.archive_content_obj.file_path = null;
                                         $idaa_slct.archive_content_obj.filename = null;
                                         $idaa_slct.archive_content_obj.file_extension = null;
+
+                                        $idaa_slct.archive_content_obj.upload_complete = false;
+                                        $idaa_slct.archive_content_obj.hosted_file_id_li = [];
+                                        $idaa_slct.archive_content_obj.hosted_file_obj_li = [];
                                     });
                             }
                         }}