Update localization files and remove unused files

src/assets/locale/en/knowledge.json

@@ -0,0 +1,42 @@
+{
+    "addBtn": "Add New Knowledge",
+    "columns": {
+        "title": "Title",
+        "status": "Status",
+        "embeddings": "Embedding Model",
+        "createdAt": "Created At",
+        "action": "Actions"
+    },
+    "expandedColumns": {
+        "name": "Name"
+    },
+    "tooltip": {
+        "delete": "Delete"
+    },
+    "confirm": {
+        "delete": "Are you sure you want to delete this knowledge?"
+    },
+    "deleteSuccess": "Knowledge deleted successfully",
+    "status": {
+        "pending": "Pending",
+        "finished": "Finished",
+        "processing": "Processing"
+    },
+    "addKnowledge": "Add Knowledge",
+    "form": {
+        "title": {
+            "label": "Knowledge Title",
+            "placeholder": "Enter knowledge title",
+            "required": "Knowledge title is required"
+        },
+        "uploadFile": {
+            "label": "Upload File",
+            "uploadText": "Drag and drop a file here or click to upload",
+            "uploadHint": "Supported file types: .pdf, .csv, .txt",
+            "required": "File is required"
+        },
+        "submit": "Submit",
+        "success": "Knowledge added successfully"
+    },
+    "noEmbeddingModel": "Please add an embedding model first from the Ollama settings page"
+}