fix: update user prompt formatting and correct 90-day cutoff logic

- Changed user prompt formatting to use full text instead of truncated version.
- Updated date filtering logic to use milliseconds instead of seconds for 90-day cutoff.
- Renamed doc_type values in ChromaSync to ensure consistency and prevent deduplication issues.
- Improved documentation for concept tags in input schema.

src/services/sync/ChromaSync.ts

@@ -523,9 +523,9 @@ export class ChromaSync {
           if (meta.sqlite_id) {
             if (meta.doc_type === 'observation') {
               observationIds.add(meta.sqlite_id);
-            } else if (meta.doc_type === 'summary') {
+            } else if (meta.doc_type === 'session_summary') {
               summaryIds.add(meta.sqlite_id);
-            } else if (meta.doc_type === 'prompt') {
+            } else if (meta.doc_type === 'user_prompt') {
               promptIds.add(meta.sqlite_id);
             }
           }