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/scripts/on_git_commit_capture.sh

@@ -1,13 +1,14 @@
 #!/usr/bin/env bash
 # Hook: PreToolUse (matcher: Bash)
 #
-# Detects `git commit` commands and fires on_pre_commit.py in the background
-# to capture staged changes as a mem0 memory. Never blocks the commit.
+# Detects `git commit` commands and:
+# 1. Fires on_pre_commit.py in the background to capture staged changes as memory
+# 2. Searches for relevant memories about the changed files and surfaces them
 #
 # Input:  JSON on stdin with tool_name, tool_input
-# Output: none (always exit 0)
+# Output: JSON with additionalContext (relevant memories for the commit)
 
-set -euo pipefail
+set -uo pipefail
 
 INPUT=$(cat)
 
@@ -27,7 +28,7 @@ esac
 
 SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
 
-if [ ! -x "$SCRIPT_DIR/on_pre_commit.py" ] && [ ! -f "$SCRIPT_DIR/on_pre_commit.py" ]; then
+if [ ! -f "$SCRIPT_DIR/on_pre_commit.py" ]; then
   exit 0
 fi
 
@@ -36,6 +37,56 @@ if [ -z "$API_KEY" ]; then
   exit 0
 fi
 
+# Background: capture staged changes as memory
 git diff --cached --stat 2>/dev/null | python3 "$SCRIPT_DIR/on_pre_commit.py" &
 
+# Foreground: search for relevant memories about changed files
+CHANGED_FILES=$(git diff --cached --name-only 2>/dev/null | head -10 | tr '\n' ', ' | sed 's/,$//')
+if [ -z "$CHANGED_FILES" ]; then
+  exit 0
+fi
+
+USER_ID="${MEM0_RESOLVED_USER_ID:-$USER}"
+PROJECT_ID="${MEM0_PROJECT_ID:-unknown}"
+
+CONTEXT=$(python3 -c "
+import json, urllib.request, os
+api_key = os.environ.get('MEM0_API_KEY', os.environ.get('CLAUDE_PLUGIN_OPTION_MEM0_API_KEY', ''))
+user_id = '$USER_ID'
+app_id = '$PROJECT_ID'
+files = '$CHANGED_FILES'
+first_file = files.split(',')[0].strip()
+body = json.dumps({
+    'query': f'changes to {files}',
+    'filters': {'AND': [{'user_id': user_id}, {'app_id': app_id}]},
+    'top_k': 3,
+}).encode()
+req = urllib.request.Request(
+    'https://api.mem0.ai/v2/memories/search/',
+    data=body,
+    headers={'Authorization': f'Token {api_key}', 'Content-Type': 'application/json'},
+    method='POST',
+)
+try:
+    with urllib.request.urlopen(req, timeout=5) as r:
+        results = json.loads(r.read())
+        memories = results if isinstance(results, list) else results.get('results', [])
+        if memories:
+            lines = ['## Pre-Commit Memory Check', '', 'Relevant memories for files being committed (' + files + '):', '']
+            for m in memories[:3]:
+                mid = m.get('id', '?')[:8]
+                text = m.get('memory', '')[:200]
+                cat = (m.get('metadata') or {}).get('type', 'unknown')
+                lines.append(f'- [{cat}] {text} [mem0:{mid}]')
+            lines.append('')
+            lines.append('Consider: does this commit introduce a learning worth saving? If so, suggest storing it after the commit completes.')
+            print('\\n'.join(lines))
+except Exception:
+    pass
+" 2>/dev/null || true)
+
+if [ -n "$CONTEXT" ]; then
+  jq -nc --arg ctx "$CONTEXT" '{hookSpecificOutput:{hookEventName:"PreToolUse",additionalContext:$ctx}}'
+fi
+
 exit 0