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)

skills/external/supabase-tools-supabase-usage/references/auth.md

@@ -0,0 +1,100 @@
+# Supabase Authentication
+
+Supabase Auth provides user management with JWT-based sessions.
+
+## Auth Tables
+
+Key tables in the `auth` schema:
+
+- `auth.users` - User accounts (id, email, phone, created_at, etc.)
+- `auth.sessions` - Active sessions
+- `auth.identities` - OAuth provider identities
+
+## JavaScript SDK
+
+```javascript
+// Initialize client
+import { createClient } from "@supabase/supabase-js";
+const supabase = createClient(url, anonKey);
+
+// Sign up
+const { data, error } = await supabase.auth.signUp({
+  email: "user@example.com",
+  password: "securepassword",
+});
+
+// Sign in
+const { data, error } = await supabase.auth.signInWithPassword({
+  email: "user@example.com",
+  password: "securepassword",
+});
+
+// Get current user
+const {
+  data: { user },
+} = await supabase.auth.getUser();
+
+// Sign out
+await supabase.auth.signOut();
+
+// Listen to auth state changes
+supabase.auth.onAuthStateChange((event, session) => {
+  console.log("Auth event:", event);
+  if (session) console.log("User ID:", session.user.id);
+});
+
+// OAuth sign in
+const { data, error } = await supabase.auth.signInWithOAuth({
+  provider: "google",
+});
+```
+
+## Python SDK
+
+```python
+from supabase import Client, create_client
+
+supabase: Client = create_client(url, key)
+
+# Sign up
+response = supabase.auth.sign_up({"email": "user@example.com", "password": "securepassword"})
+
+# Sign in
+response = supabase.auth.sign_in_with_password({"email": "user@example.com", "password": "securepassword"})
+
+# Get current user
+user = supabase.auth.get_user()
+
+# Sign out
+supabase.auth.sign_out()
+```
+
+## User Profile Table Pattern
+
+Link a public profile table to auth.users:
+
+```sql
+create table public.profiles (
+  id uuid not null references auth.users on delete cascade,
+  first_name text,
+  last_name text,
+  avatar_url text,
+  primary key (id)
+);
+
+alter table public.profiles enable row level security;
+
+-- Auto-create profile on signup (trigger)
+create function public.handle_new_user()
+returns trigger as $$
+begin
+  insert into public.profiles (id)
+  values (new.id);
+  return new;
+end;
+$$ language plpgsql security definer;
+
+create trigger on_auth_user_created
+  after insert on auth.users
+  for each row execute procedure public.handle_new_user();
+```