refactor(mem0-plugin): improve hook scripts, config parsing, and skill definitions

Update git commit capture with better error handling, enhance user prompt hook,
extend config parser capabilities, and refine skill docs for dream, health,
mcp, pin, and stats skills.

mem0-plugin/skills/mem0-mcp/SKILL.md

@@ -272,7 +272,23 @@ add_memory(
 )
 ```
 
-**Filtering note:** The mem0 v2 filter API does not yet support `array-contains` predicates. You cannot filter by `metadata.files` at search time. To work around this, always embed the bare filenames (and important path segments) in the memory content text itself — the vector search will then surface them on a filename query. The `files` array in metadata is still written for future compatibility once array-contains filtering is available.
+**Filtering by files:** Use the `contains` operator to filter by `metadata.files` at search time:
+
+```python
+search_memories(
+    query="auth middleware",
+    filters={
+        "AND": [
+            {"user_id": "<id>"},
+            {"app_id": "<project_id>"},
+            {"metadata.files": {"contains": "src/middleware/auth.ts"}},
+        ]
+    },
+    limit=5,
+)
+```
+
+Also embed bare filenames in the memory content text as a fallback — the vector search will surface them even if the structured filter misses.
 
 ### Access counter: track memory usage
 
@@ -289,10 +305,11 @@ import datetime
 current_meta["access_count"] = current_meta.get("access_count", 0) + 1
 current_meta["last_accessed"] = datetime.datetime.now(datetime.timezone.utc).isoformat()
 
-# 3. Update with preserved content
+# 3. Update with preserved content and bumped metadata
 update_memory(
     memory_id=<id>,
     data=current_text,  # preserve original text — required parameter
+    metadata=current_meta,  # pass updated access_count and last_accessed
 )
 ```