Add comprehensive skills, agents, commands collection

- Added 44 external skills from obra/superpowers, ui-ux-pro-max-skill, claude-codex-settings
- Added 8 autonomous agents (commit-creator, pr-creator, pr-reviewer, etc.)
- Added 23 slash commands for Git/GitHub, setup, and plugin development
- Added hooks for code formatting, notifications, and validation
- Added MCP configurations for Azure, GCloud, Supabase, MongoDB, etc.
- Added awesome-openclaw-skills registry (3,002 skills referenced)
- Updated comprehensive README with full documentation

Sources:
- github.com/obra/superpowers (14 skills)
- github.com/nextlevelbuilder/ui-ux-pro-max-skill (1 skill)
- github.com/fcakyon/claude-codex-settings (29 skills, 8 agents, 23 commands)
- github.com/VoltAgent/awesome-openclaw-skills (registry)
- skills.sh (reference)
- buildwithclaude.com (reference)

hooks/claude-codex-settings/scripts/tavily_extract_to_advanced.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+"""Intercept mcp__tavily__tavily-extract to upgrade extract_depth and suggest gh CLI for GitHub URLs."""
+
+import json
+import sys
+
+try:
+    data = json.load(sys.stdin)
+    tool_input = data["tool_input"]
+    urls = tool_input.get("urls", [])
+
+    # Always ensure extract_depth="advanced"
+    tool_input["extract_depth"] = "advanced"
+
+    # Check for GitHub URLs and add soft suggestion
+    github_domains = ("github.com", "raw.githubusercontent.com", "gist.github.com")
+    github_urls = [url for url in urls if any(domain in url for domain in github_domains)]
+
+    if github_urls:
+        # Allow but suggest GitHub MCP/gh CLI for next time
+        print(
+            json.dumps(
+                {
+                    "systemMessage": "Tip: For GitHub URLs, use gh CLI: `gh api repos/{owner}/{repo}/contents/{path} --jq '.content' | base64 -d` for files, `gh pr view` for PRs, `gh issue view` for issues.",
+                    "hookSpecificOutput": {
+                        "hookEventName": "PreToolUse",
+                        "permissionDecision": "allow",
+                        "updatedInput": tool_input,
+                    },
+                },
+                separators=(",", ":"),
+            )
+        )
+        sys.exit(0)
+
+    # Allow the call to proceed
+    print(
+        json.dumps(
+            {
+                "hookSpecificOutput": {
+                    "hookEventName": "PreToolUse",
+                    "permissionDecision": "allow",
+                    "updatedInput": tool_input,
+                }
+            },
+            separators=(",", ":"),
+        )
+    )
+    sys.exit(0)
+
+except (KeyError, json.JSONDecodeError) as err:
+    print(f"hook-error: {err}", file=sys.stderr)
+    sys.exit(1)