feat: initial commit

Axum/Postgres server with auth, migrations, and Docker setup.

migrations/20260812114905_create_user_table.up.sql

@@ -0,0 +1,28 @@
+CREATE TABLE users (
+    id             UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    email          TEXT NOT NULL UNIQUE,
+    password_hash  TEXT NOT NULL,
+    username       TEXT NOT NULL UNIQUE,
+    display_name   TEXT NOT NULL,
+    avatar_url     TEXT,
+    bio            TEXT,
+    email_verified BOOLEAN NOT NULL DEFAULT false,
+    created_at     TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at     TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    deleted_at     TIMESTAMPTZ
+);
+
+CREATE TYPE auth_token_kind AS ENUM ('password_reset', 'email_verification', 'refresh_token');
+
+CREATE TABLE auth_tokens (
+    id         UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id    UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    token_hash TEXT NOT NULL,
+    kind       auth_token_kind NOT NULL,
+    expires_at TIMESTAMPTZ NOT NULL,
+    used_at    TIMESTAMPTZ,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX auth_tokens_user_id_idx  ON auth_tokens(user_id);
+CREATE INDEX auth_tokens_token_hash_idx ON auth_tokens(token_hash);