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/check-index-coverage.sh

@@ -0,0 +1,70 @@
+#!/bin/bash
+# Check that all skills are properly listed in INDEX files
+
+SKILLS_DIR="${1:-$HOME/Documents/GitHub/dotfiles/.claude/skills}"
+
+echo "## INDEX Coverage"
+# For each category with an INDEX
+for category_dir in "$SKILLS_DIR"/*/; do
+    category=$(basename "$category_dir")
+
+    # Skip if not a directory
+    [[ ! -d "$category_dir" ]] && continue
+
+    index_file="$category_dir/INDEX.md"
+
+    # Skip if no INDEX (meta directories might not have one)
+    [[ ! -f "$index_file" ]] && continue
+
+    # Find all SKILL.md files in this category
+    skill_count=0
+    indexed_count=0
+    missing_count=0
+
+    while IFS= read -r skill_file; do
+        skill_count=$((skill_count + 1))
+        skill_name=$(basename $(dirname "$skill_file"))
+
+        # Check if skill is referenced in INDEX
+        if grep -q "@$skill_name/SKILL.md" "$index_file"; then
+            indexed_count=$((indexed_count + 1))
+        else
+            echo "  ❌ NOT INDEXED: $skill_name/SKILL.md"
+            missing_count=$((missing_count + 1))
+        fi
+    done < <(find "$category_dir" -mindepth 2 -type f -name "SKILL.md")
+
+    if [ $skill_count -gt 0 ] && [ $missing_count -eq 0 ]; then
+        echo "  ✅ $category: all $skill_count skills indexed"
+    elif [ $missing_count -gt 0 ]; then
+        echo "  ⚠️  $category: $missing_count/$skill_count skills missing"
+    fi
+done
+
+echo ""
+# Verify INDEX entries have descriptions
+find "$SKILLS_DIR" -type f -name "INDEX.md" | while read -r index_file; do
+    category=$(basename $(dirname "$index_file"))
+
+    # Extract skill references
+    grep -o '@[a-zA-Z0-9-]*/SKILL\.md' "$index_file" | while read -r ref; do
+        skill_name=${ref#@}
+        skill_name=${skill_name%/SKILL.md}
+
+        # Get the line with the reference
+        line_num=$(grep -n "$ref" "$index_file" | cut -d: -f1)
+
+        # Check if there's a description on the same line or next line
+        description=$(sed -n "${line_num}p" "$index_file" | sed "s|.*$ref *- *||")
+
+        if [[ -z "$description" || "$description" == *"$ref"* ]]; then
+            # No description on same line, check next line
+            next_line=$((line_num + 1))
+            description=$(sed -n "${next_line}p" "$index_file")
+
+            if [[ -z "$description" ]]; then
+                echo "  ⚠️  NO DESCRIPTION: $category/INDEX.md reference to $skill_name"
+            fi
+        fi
+    done
+done