Initial commit: Superpowers plugin v1.0.0

Core skills library as Claude Code plugin:
- Testing skills: TDD, async testing, anti-patterns
- Debugging skills: Systematic debugging, root cause tracing
- Collaboration skills: Brainstorming, planning, code review
- Meta skills: Creating and testing skills

Features:
- SessionStart hook for context injection
- Skills-search tool for discovery
- Commands: /brainstorm, /write-plan, /execute-plan
- Data directory at ~/.superpowers/

skills/meta/gardening-skills-wiki/analyze-search-gaps.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+# Analyze failed skills-search queries to identify missing skills
+
+set -euo pipefail
+
+SKILLS_DIR="${HOME}/.claude/skills"
+LOG_FILE="${SKILLS_DIR}/.search-log.jsonl"
+
+if [[ ! -f "$LOG_FILE" ]]; then
+    echo "No search log found at $LOG_FILE"
+    exit 0
+fi
+
+echo "Skills Search Gap Analysis"
+echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
+echo ""
+
+# Count total searches
+total=$(wc -l < "$LOG_FILE")
+echo "Total searches: $total"
+echo ""
+
+# Extract and count unique queries
+echo "Most common searches:"
+jq -r '.query' "$LOG_FILE" 2>/dev/null | sort | uniq -c | sort -rn | head -20
+
+echo ""
+echo "Recent searches (last 10):"
+tail -10 "$LOG_FILE" | jq -r '"\(.timestamp) - \(.query)"' 2>/dev/null
+
+echo ""
+echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
+echo ""
+echo "High-frequency searches indicate missing skills."
+echo "Review patterns and create skills as needed."