post3/todos/POST3-004-s3-server-skeleton.md

POST3-004: S3 HTTP server skeleton

Status: Done Priority: P0 Blocked by: POST3-003

Description

Build the post3-server binary with CLI (clap), state management, notmad component lifecycle, and axum router with all S3 routes wired up.

Acceptance Criteria

• main.rs — dotenvy + tracing_subscriber + cli::execute()
• cli.rs — clap App with serve subcommand
• cli/serve.rs — ServeCommand with --host flag, starts notmad::Mad with S3Server
• state.rs — State struct (PgPool + Store), runs migrations on new()
• s3/mod.rs — S3Server implementing notmad::Component
• s3/router.rs — all 9 routes mapped to handler functions
• Server starts, binds to port, responds to requests
• cargo check -p post3-server passes