docs: update documentation to reflect headless API-only web service

- AGENTS.md: Update project description from web dashboard to REST API

- README.md: Replace Web Dashboard section with REST API, update tech stack

- docs/main.md: Refactor Web Dashboard section to REST API documentation

- web/README.md: Rewrite from React setup to API endpoint documentation

All React/UI references removed - web is now API-only

AGENTS.md

@@ -2,13 +2,13 @@
 
 ## Project Overview
 
-AuroraBot is a Discord bot with a web dashboard built using Bun, Discord.js, React, and PostgreSQL with Drizzle ORM.
+AuroraBot is a Discord bot with a REST API built using Bun, Discord.js, and PostgreSQL with Drizzle ORM.
 
 ## Build/Lint/Test Commands
 
 ```bash
 # Development
-bun --watch bot/index.ts         # Run bot + web dashboard with hot reload
+bun --watch bot/index.ts         # Run bot + API server with hot reload
 
 # Testing
 bun test                         # Run all tests
@@ -24,8 +24,8 @@ bun run db:push:local            # Push schema changes (local)
 bun run db:studio                # Open Drizzle Studio
 
 # Docker (recommended for local dev)
-docker compose up                # Start bot, web, and database
-docker compose up app            # Start just the app (bot + web)
+docker compose up                # Start bot, API, and database
+docker compose up app            # Start just the app (bot + API)
 docker compose up db             # Start just the database
 ```
 
@@ -44,10 +44,8 @@ shared/                 # Shared between bot and web
 ├── lib/                # Utils, config, errors, types
 └── modules/            # Domain services (economy, user, etc.)
 
-web/                    # React dashboard
-├── src/pages/          # React pages
-├── src/components/     # UI components (ShadCN/Radix)
-└── src/hooks/          # React hooks
+web/                    # API server
+└── src/routes/         # API route handlers
 ```
 
 ## Import Conventions
@@ -224,9 +222,9 @@ describe("serviceName", () => {
 
 - **Runtime:** Bun 1.0+
 - **Bot:** Discord.js 14.x
-- **Web:** React 19 + Bun HTTP Server
+- **Web:** Bun HTTP Server (REST API)
 - **Database:** PostgreSQL 16+ with Drizzle ORM
-- **UI:** Tailwind CSS v4 + ShadCN/Radix
+- **UI:** Discord embeds and components
 - **Validation:** Zod
 - **Testing:** Bun Test
 - **Container:** Docker