feat: support manual add and edit for memory facts (#1538)

* feat: support manual add and edit for memory facts

* fix: restore memory updater save helper

* fix: address memory fact review feedback

* fix: remove duplicate memory fact edit action

* docs: simplify memory fact review setup

* docs: relax memory review startup instructions

* fix: clear rebase marker in memory settings page

* fix: address memory fact review and format issues

* fix: address memory fact review feedback

* refactor: make memory fact updates explicit patch semantics

---------

Co-authored-by: Willem Jiang <willem.jiang@gmail.com>

frontend/src/core/i18n/locales/en-US.ts

@@ -22,6 +22,7 @@ export const enUS: Translations = {
     home: "Home",
     settings: "Settings",
     delete: "Delete",
+    edit: "Edit",
     rename: "Rename",
     share: "Share",
     openInNewWindow: "Open in new window",
@@ -312,6 +313,11 @@ export const enUS: Translations = {
         "DeerFlow automatically learns from your conversations in the background. These memories help DeerFlow understand you better and deliver a more personalized experience.",
       empty: "No memory data to display.",
       rawJson: "Raw JSON",
+      addFact: "Add fact",
+      addFactTitle: "Add memory fact",
+      editFactTitle: "Edit memory fact",
+      addFactSuccess: "Fact created",
+      editFactSuccess: "Fact updated",
       clearAll: "Clear all memory",
       clearAllConfirmTitle: "Clear all memory?",
       clearAllConfirmDescription:
@@ -321,9 +327,19 @@ export const enUS: Translations = {
       factDeleteConfirmDescription:
         "This fact will be removed from memory immediately. This action cannot be undone.",
       factDeleteSuccess: "Fact deleted",
+      factContentLabel: "Content",
+      factCategoryLabel: "Category",
+      factConfidenceLabel: "Confidence",
+      factContentPlaceholder: "Describe the memory fact you want to save",
+      factCategoryPlaceholder: "context",
+      factConfidenceHint: "Use a number between 0 and 1.",
+      factSave: "Save fact",
+      factValidationContent: "Fact content cannot be empty.",
+      factValidationConfidence: "Confidence must be a number between 0 and 1.",
+      manualFactSource: "Manual",
       noFacts: "No saved facts yet.",
       summaryReadOnly:
-        "Summary sections are read-only for now. You can currently clear all memory or delete individual facts.",
+        "Summary sections are read-only for now. You can currently add, edit, or delete individual facts, or clear all memory.",
       memoryFullyEmpty: "No memory saved yet.",
       factPreviewLabel: "Fact to delete",
       searchPlaceholder: "Search memory",