feat: add support for edit tracking in OuroborosDB

- Introduced EditOf field in StoreOptions and RetrievedData structures to link edits to their original content.
- Implemented resolveLatestEdit function to traverse the edit chain and return the most recent edit for a given key.
- Updated StoreData method to handle metadata for edits, including storing the EditOf hash.
- Enhanced GetData method to return SuggestedEdit and EditOf fields in the RetrievedData response.
- Modified API server to expose new headers for SuggestedEdit and EditOf in HTTP responses.
- Updated bulk data handling to include resolved keys and suggested edits in the response structure.
- Added tests to verify the correct behavior of edit tracking and retrieval of latest edits.
- Adjusted metadata structure to include EditOf field for JSON serialization.

Author: i5heu

.gitignore

@@ -1,3 +1,4 @@
 main
 *.log
-data/
+data/
+.cache/

frontend/src/lib/apiClient.ts

@@ -8,6 +8,7 @@ export type ThreadSummaryPayload = {
     childCount: number;
     createdAt?: string;
     computedId?: string;
+    suggestedEdit?: string;
 };
 
 export type ThreadNodePayload = {
@@ -21,10 +22,15 @@ export type ThreadNodePayload = {
     depth: number;
     children: string[];
     computedId?: string;
+    suggestedEdit?: string;
+    editOf?: string;
 };
 
 export type BulkDataRecord = {
     key: string;
+    resolvedKey?: string;
+    suggestedEdit?: string;
+    editOf?: string;
     found: boolean;
     mimeType?: string;
     isText?: boolean;

frontend/src/lib/indexedDb2.ts

@@ -17,6 +17,9 @@ export type ThreadSummaryRecord = {
 
 export type MessageRecord = {
     key: string;
+    resolvedKey?: string;
+    suggestedEdit?: string;
+    editOf?: string;
     mimeType: string;
     isText: boolean;
     sizeBytes: number;

frontend/src/lib/types.ts

@@ -21,6 +21,10 @@ export type Message = {
     depth?: number;
     title?: string;
     computedId?: string;
+    // When an edited version exists, resolvedKey/suggestedEdit point to the latest hash.
+    resolvedKey?: string;
+    suggestedEdit?: string;
+    editOf?: string;
 };
 
 export type LookupResult = {