Make the invite copyable and widen what feedback invites

Three fixes from using the admin panel and the site: - The invite link was an anchor, but an invite is something to send, not to follow — clicking it opened the join form in the admin's own browser. It is now the URL beside a Kopioi button. The handler reads the text out of the sibling element rather than interpolating the URL into JS, so there is nothing to escape, and where the clipboard API is missing (it needs a secure context, which the documented SSH tunnel to localhost provides) it selects the text instead of leaving a button that does nothing. - "Ilmoita ongelmasta" framed the feedback form as a bug tracker when it is meant to take ideas and general feedback too. The footer now asks "Ongelmia? Ideoita? Palautetta?", and the page it leads to answers all three: the ingress covers ideas explicitly and the placeholder suggests a feature rather than a fault. - "Kuuntele YouTubessa" opens in a new tab. Leaving the page mid-review would lose whatever is already typed into the review form.
Replace Postgres with SQLite
2026-08-02 20:57:34 +03:00 · 2026-08-02 20:47:41 +03:00 · 2026-08-01 00:45:40 +03:00 · 2026-08-01 00:21:31 +03:00
33 changed files with 480 additions and 396 deletions
@@ -1,5 +1,4 @@
-# Copy to .env and edit. Neither password has a default.
-POSTGRES_PASSWORD=
+# Copy to .env and edit. The admin password has no default.
 ADMIN_USER=admin
 ADMIN_PASSWORD=

@@ -1,5 +1,4 @@
 /levyraati
 /levyraati26-go
 /storage/
-/pgdata/
 .env
@@ -10,7 +10,9 @@ RUN CGO_ENABLED=0 go build -ldflags "-X main.version=${VERSION}" -o /levyraati .
 FROM alpine:3.24
 # yt-dlp rots against YouTube. Alpine's active branch tracks it closely (3.24 carries the current
 # release), so a rebuild is the update — and this avoids python3 + pip in the image entirely.
-RUN apk add --no-cache ffmpeg yt-dlp ca-certificates
+# sqlite is the CLI only — the app links its own pure-Go copy. It is here so `.backup` and a shell
+# are reachable with docker compose exec, which is the whole of database operations now.
+RUN apk add --no-cache ffmpeg yt-dlp ca-certificates sqlite
 COPY --from=build /levyraati /usr/local/bin/levyraati
 ENV STORAGE_DIR=/storage
 EXPOSE 8080
@@ -45,10 +45,12 @@ Members have an address because it is their login and because mail is a planned

 ## Stack

-Go, Postgres, `html/template`, HTMX + Alpine. Audio is converted with ffmpeg and downloaded with
-yt-dlp. One binary, one origin — there is no separate frontend to deploy.
+Go, SQLite, `html/template`, HTMX + Alpine. Audio is converted with ffmpeg and downloaded with
+yt-dlp. One binary, one origin, one container — there is no separate frontend and no database server
+to deploy.

-Go dependencies: `pgx/v5` and `golang.org/x/crypto`. No Node, no npm, no bundler.
+Go dependencies: `modernc.org/sqlite` and `golang.org/x/crypto`. The SQLite driver is pure Go, so the
+build stays `CGO_ENABLED=0`. No Node, no npm, no bundler.

 ## Running it

@@ -64,8 +66,7 @@ creates no users: log into the admin panel and mint an invite.

 | Variable | Default | Notes |
 |---|---|---|
-| `POSTGRES_PASSWORD` | — | **Required by Compose.** Used to build `DATABASE_URL` for the app |
-| `DATABASE_URL` | — | `postgres://user:pass@postgres:5432/levyraati` |
+| `DB_PATH` | `$STORAGE_DIR/levyraati.db` | The SQLite file. Created on first start |
 | `ADMIN_USER` | `admin` | Admin panel username |
 | `ADMIN_PASSWORD` | — | **Required.** No default; the app refuses to start without it |
 | `ADDR` | `:8080` | Member-facing listener |
@@ -77,16 +78,14 @@ creates no users: log into the admin panel and mint an invite.
 ### Local development

 ```sh
-docker compose up -d postgres
-export DATABASE_URL="postgres://levyraati:$POSTGRES_PASSWORD@localhost:5432/levyraati"
 export ADMIN_PASSWORD=dev SECURE_COOKIES=false
 go run .
 ```

-Requires Go 1.24+, plus `ffmpeg`, `ffprobe`, and `yt-dlp` on `PATH`.
+Requires Go 1.25+, plus `ffmpeg`, `ffprobe`, and `yt-dlp` on `PATH`. There is nothing to start first:
+the database is a file under `./storage`, created on the first run.

-Tests that need a database are skipped unless `TEST_DATABASE_URL` points at a throwaway one — the
-migration test drops and recreates the `public` schema, so never point it at anything you care about.
+Tests get a fresh database file in a temp directory each, so they need no setup and touch nothing:

 ```sh
 go test ./...
@@ -136,23 +135,22 @@ JSON to stdout, nothing else. There is no log table and no log viewer in the app

 ### Backups

-Two paths hold everything:
+`./storage` holds everything: audio files, avatars, and `levyraati.db`. It is a bind mount, so a copy
+of that one directory is the whole backup. `storage/tmp/` is in-flight conversions and is safe to
+skip; it's cleared on startup anyway.

- `./pgdata` — the database. Postgres 18 stores it under a version subdirectory (`18/docker`), so
-  the mount is `/var/lib/postgresql`, not `/var/lib/postgresql/data`
- `./storage` — audio files and avatars
-
-Both are bind mounts. `storage/tmp/` is in-flight conversions and is safe to skip; it's cleared on
-startup anyway.
+Copying the file while the app is running is not a backup — WAL means the latest writes live in a
+sidecar file. Ask SQLite for a consistent snapshot instead:

 ```sh
-docker compose exec postgres pg_dump -U levyraati levyraati | gzip > backup-$(date +%F).sql.gz
+docker compose exec app sqlite3 /storage/levyraati.db ".backup '/storage/tmp/backup.db'"
+gzip -c storage/tmp/backup.db > backup-$(date +%F).db.gz && rm storage/tmp/backup.db
 ```

 ### Database shell

 ```sh
-docker compose exec postgres psql -U levyraati levyraati
+docker compose exec app sqlite3 /storage/levyraati.db
 ```

 ## Layout
@@ -41,12 +41,12 @@ func (a *app) adminDashboard(w http.ResponseWriter, r *http.Request) {

 	// Unused invites are the ones with a job to do; spent ones are counted, not listed. Truncating
 	// a list silently reads as "that's all of them".
-	if err := a.pool.QueryRow(r.Context(),
-		`select count(*)::int from invites where not is_valid`).Scan(&d.SpentCount); err != nil {
+	if err := a.db.QueryRowContext(r.Context(),
+		`select count(*) from invites where not is_valid`).Scan(&d.SpentCount); err != nil {
 		adminError(w, "invites", err)
 		return
 	}
-	rows, err := a.pool.Query(r.Context(),
+	rows, err := a.db.QueryContext(r.Context(),
 		`select id, code, is_valid, created_at from invites where is_valid order by created_at desc`)
 	if err != nil {
 		adminError(w, "invites", err)
@@ -67,7 +67,7 @@ func (a *app) adminDashboard(w http.ResponseWriter, r *http.Request) {
 		return
 	}

-	rows, err = a.pool.Query(r.Context(),
+	rows, err = a.db.QueryContext(r.Context(),
 		`select id, name, email, banned, created_at from users order by created_at`)
 	if err != nil {
 		adminError(w, "users", err)
@@ -91,8 +91,8 @@ func (a *app) adminDashboard(w http.ResponseWriter, r *http.Request) {
 		adminError(w, "songs", err)
 		return
 	}
-	if err := a.pool.QueryRow(r.Context(),
-		`select count(*)::int from reports where resolved_at is null`).Scan(&d.OpenCount); err != nil {
+	if err := a.db.QueryRowContext(r.Context(),
+		`select count(*) from reports where resolved_at is null`).Scan(&d.OpenCount); err != nil {
 		adminError(w, "reports", err)
 		return
 	}
@@ -116,7 +116,7 @@ func (a *app) inviteLink(code string) string {

 func (a *app) createInvite(w http.ResponseWriter, r *http.Request) {
 	code := inviteCode()
-	if _, err := a.pool.Exec(r.Context(), `insert into invites (code) values ($1)`, code); err != nil {
+	if _, err := a.db.ExecContext(r.Context(), `insert into invites (code) values ($1)`, code); err != nil {
 		adminError(w, "invites", err)
 		return
 	}
@@ -136,14 +136,14 @@ func (a *app) toggleBan(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	var banned bool
-	err = a.pool.QueryRow(r.Context(),
+	err = a.db.QueryRowContext(r.Context(),
 		`update users set banned = not banned where id = $1 returning banned`, id).Scan(&banned)
 	if err != nil {
 		adminError(w, "users", err)
 		return
 	}
 	if banned {
-		if _, err := a.pool.Exec(r.Context(), `delete from sessions where user_id = $1`, id); err != nil {
+		if _, err := a.db.ExecContext(r.Context(), `delete from sessions where user_id = $1`, id); err != nil {
 			adminError(w, "users", err)
 			return
 		}
@@ -173,12 +173,12 @@ func (a *app) resetPassword(w http.ResponseWriter, r *http.Request) {
 		adminError(w, "auth", err)
 		return
 	}
-	if _, err := a.pool.Exec(r.Context(),
+	if _, err := a.db.ExecContext(r.Context(),
 		`update users set password_hash = $2 where id = $1`, id, string(hash)); err != nil {
 		adminError(w, "auth", err)
 		return
 	}
-	if _, err := a.pool.Exec(r.Context(), `delete from sessions where user_id = $1`, id); err != nil {
+	if _, err := a.db.ExecContext(r.Context(), `delete from sessions where user_id = $1`, id); err != nil {
 		adminError(w, "auth", err)
 		return
 	}
@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"crypto/rand"
+	"database/sql"
 	"encoding/hex"
 	"errors"
 	"log/slog"
@@ -10,8 +11,8 @@ import (
 	"strings"
 	"time"

-	"github.com/jackc/pgx/v5"
 	"golang.org/x/crypto/bcrypt"
+	"modernc.org/sqlite"
 )

 const (
@@ -79,9 +80,9 @@ func (a *app) startSession(ctx context.Context, userID int64, remember bool) (st
 	}
 	tok := token()
 	expires := time.Now().Add(ttl)
-	_, err := a.pool.Exec(ctx,
+	_, err := a.db.ExecContext(ctx,
 		`insert into sessions (token, user_id, idle_ttl, expires_at) values ($1, $2, $3, $4)`,
-		tok, userID, ttl, expires)
+		tok, userID, int64(ttl.Seconds()), expires)
 	return tok, expires, err
 }

@@ -100,32 +101,32 @@ func (a *app) session(w http.ResponseWriter, r *http.Request) *member {
 		return nil
 	}
 	var (
-		m         member
-		expires   time.Time
-		ttl       time.Duration
-		ttlMicros int64
+		m          member
+		expires    time.Time
+		ttl        time.Duration
+		ttlSeconds int64
 	)
-	err := a.pool.QueryRow(r.Context(), `
-		select s.expires_at, extract(epoch from s.idle_ttl) * 1000000,
+	err := a.db.QueryRowContext(r.Context(), `
+		select s.expires_at, s.idle_ttl,
 		       u.id, u.name, u.email, u.avatar, u.banned, u.created_at
 		  from sessions s join users u on u.id = s.user_id
-		 where s.token = $1 and s.expires_at > now()`, tok).
-		Scan(&expires, &ttlMicros, &m.ID, &m.Name, &m.Email, &m.Avatar, &m.Banned, &m.CreatedAt)
+		 where s.token = $1 and s.expires_at > datetime('now')`, tok).
+		Scan(&expires, &ttlSeconds, &m.ID, &m.Name, &m.Email, &m.Avatar, &m.Banned, &m.CreatedAt)
 	if err != nil {
-		if !errors.Is(err, pgx.ErrNoRows) {
+		if !errors.Is(err, sql.ErrNoRows) {
 			slog.Error("session lookup", "ctx", "auth", "error", err)
 		}
 		return nil
 	}
 	if m.Banned {
 		// Banning deletes sessions, so this is belt and braces for a row that outlived one.
-		a.pool.Exec(r.Context(), `delete from sessions where user_id = $1`, m.ID)
+		a.db.ExecContext(r.Context(), `delete from sessions where user_id = $1`, m.ID)
 		return nil
 	}
-	ttl = time.Duration(ttlMicros) * time.Microsecond
+	ttl = time.Duration(ttlSeconds) * time.Second
 	if time.Until(expires) < ttl-extendAfter {
 		newExpiry := time.Now().Add(ttl)
-		if _, err := a.pool.Exec(r.Context(),
+		if _, err := a.db.ExecContext(r.Context(),
 			`update sessions set expires_at = $2 where token = $1`, tok, newExpiry); err == nil {
 			a.setSessionCookie(w, tok, newExpiry)
 		}
@@ -178,7 +179,7 @@ func (a *app) login(w http.ResponseWriter, r *http.Request) {
 		hash   string
 		banned bool
 	)
-	err := a.pool.QueryRow(r.Context(),
+	err := a.db.QueryRowContext(r.Context(),
 		`select id, password_hash, banned from users where email = $1`, email).Scan(&id, &hash, &banned)
 	if err != nil || bcrypt.CompareHashAndPassword([]byte(hash), []byte(r.FormValue("password"))) != nil {
 		a.logins.fail(email)
@@ -208,7 +209,7 @@ func (a *app) login(w http.ResponseWriter, r *http.Request) {

 func (a *app) logout(w http.ResponseWriter, r *http.Request) {
 	if tok := sessionToken(r); tok != "" {
-		a.pool.Exec(r.Context(), `delete from sessions where token = $1`, tok)
+		a.db.ExecContext(r.Context(), `delete from sessions where token = $1`, tok)
 	}
 	http.SetCookie(w, &http.Cookie{
 		Name: sessionCookie, Value: "", Path: "/", MaxAge: -1,
@@ -259,19 +260,19 @@ func (a *app) register(w http.ResponseWriter, r *http.Request) {
 		return
 	}

-	tx, err := a.pool.Begin(r.Context())
+	tx, err := a.db.BeginTx(r.Context(), nil)
 	if err != nil {
 		slog.Error("begin", "ctx", "auth", "error", err)
 		http.Error(w, "virhe", http.StatusInternalServerError)
 		return
 	}
-	defer tx.Rollback(r.Context())
+	defer tx.Rollback()

 	var inviteID int64
-	err = tx.QueryRow(r.Context(),
-		`update invites set is_valid = false where code = $1 and is_valid returning id`,
+	err = tx.QueryRowContext(r.Context(),
+		`update invites set is_valid = 0 where code = $1 and is_valid returning id`,
 		form.Code).Scan(&inviteID)
-	if errors.Is(err, pgx.ErrNoRows) {
+	if errors.Is(err, sql.ErrNoRows) {
 		form.Errors["code"] = "Kutsukoodi ei kelpaa."
 		a.render(w, r, http.StatusUnprocessableEntity, "register.html", page{Title: "Liity", Narrow: true, Data: form})
 		return
@@ -282,7 +283,7 @@ func (a *app) register(w http.ResponseWriter, r *http.Request) {
 	}

 	var userID int64
-	err = tx.QueryRow(r.Context(),
+	err = tx.QueryRowContext(r.Context(),
 		`insert into users (name, email, password_hash) values ($1, $2, $3) returning id`,
 		form.Name, form.Email, string(hash)).Scan(&userID)
 	if isUnique(err) {
@@ -295,7 +296,7 @@ func (a *app) register(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "virhe", http.StatusInternalServerError)
 		return
 	}
-	if err := tx.Commit(r.Context()); err != nil {
+	if err := tx.Commit(); err != nil {
 		slog.Error("commit registration", "ctx", "auth", "error", err)
 		http.Error(w, "virhe", http.StatusInternalServerError)
 		return
@@ -313,7 +314,15 @@ func (a *app) register(w http.ResponseWriter, r *http.Request) {
 	http.Redirect(w, r, "/", http.StatusSeeOther)
 }

+// SQLITE_CONSTRAINT_UNIQUE and SQLITE_CONSTRAINT_PRIMARYKEY, spelled out rather than pulled in from
+// modernc.org/sqlite/lib — that package is the whole generated amalgamation, for two integers.
+const (
+	sqliteConstraintUnique     = 2067
+	sqliteConstraintPrimaryKey = 1555
+)
+
 func isUnique(err error) bool {
-	var pgErr interface{ SQLState() string }
-	return errors.As(err, &pgErr) && pgErr.SQLState() == "23505"
+	var e *sqlite.Error
+	return errors.As(err, &e) &&
+		(e.Code() == sqliteConstraintUnique || e.Code() == sqliteConstraintPrimaryKey)
 }
@@ -6,34 +6,26 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"net/url"
-	"os"
+	"path/filepath"
 	"strings"
 	"testing"
 	"time"
-
-	"github.com/jackc/pgx/v5/pgxpool"
 )

-// Set TEST_DATABASE_URL to a throwaway database — these drop and recreate the public schema.
+// A fresh database file per test, thrown away with the temp dir. No server to point at, so these
+// run everywhere rather than only where someone remembered to set an env var.
 func testApp(t *testing.T) *app {
 	t.Helper()
-	dbURL := os.Getenv("TEST_DATABASE_URL")
-	if dbURL == "" {
-		t.Skip("TEST_DATABASE_URL not set")
-	}
 	ctx := context.Background()
-	pool, err := pgxpool.New(ctx, dbURL)
+	db, err := openDB(filepath.Join(t.TempDir(), "test.db"))
 	if err != nil {
 		t.Fatal(err)
 	}
-	t.Cleanup(pool.Close)
-	if _, err := pool.Exec(ctx, `drop schema public cascade; create schema public`); err != nil {
+	t.Cleanup(func() { db.Close() })
+	if err := migrate(ctx, db); err != nil {
 		t.Fatal(err)
 	}
-	if err := migrate(ctx, pool); err != nil {
-		t.Fatal(err)
-	}
-	return &app{cfg: config{adminUser: "admin", adminPass: "s3cret"}, pool: pool}
+	return &app{cfg: config{adminUser: "admin", adminPass: "s3cret"}, db: db}
 }

 func post(t *testing.T, h http.Handler, path string, form url.Values) *httptest.ResponseRecorder {
@@ -48,7 +40,7 @@ func post(t *testing.T, h http.Handler, path string, form url.Values) *httptest.
 func (a *app) inviteValid(t *testing.T, code string) bool {
 	t.Helper()
 	var valid bool
-	if err := a.pool.QueryRow(context.Background(),
+	if err := a.db.QueryRowContext(context.Background(),
 		`select is_valid from invites where code = $1`, code).Scan(&valid); err != nil {
 		t.Fatal(err)
 	}
@@ -61,10 +53,10 @@ func TestInviteIsSpentOnlyBySuccess(t *testing.T) {
 	ctx := context.Background()
 	mux := a.withMember(a.memberMux())

-	if _, err := a.pool.Exec(ctx, `insert into invites (code) values ('kutsu1')`); err != nil {
+	if _, err := a.db.ExecContext(ctx, `insert into invites (code) values ('kutsu1')`); err != nil {
 		t.Fatal(err)
 	}
-	if _, err := a.pool.Exec(ctx,
+	if _, err := a.db.ExecContext(ctx,
 		`insert into users (name, email, password_hash) values ('Esa', '[email protected]', 'x')`); err != nil {
 		t.Fatal(err)
 	}
@@ -131,7 +123,7 @@ func TestLoginHandlerRefusesAfterTooManyFailures(t *testing.T) {
 func (a *app) seedMember(t *testing.T, email string) int64 {
 	t.Helper()
 	var id int64
-	err := a.pool.QueryRow(context.Background(),
+	err := a.db.QueryRowContext(context.Background(),
 		`insert into users (name, email, password_hash) values ('Esa', $1, 'x') returning id`,
 		email).Scan(&id)
 	if err != nil {
@@ -161,8 +153,8 @@ func TestSessionIdleTimeout(t *testing.T) {
 	}

 	// Age it past the idle window: the timeout is what expiry means, so this is the whole rule.
-	if _, err := a.pool.Exec(ctx,
-		`update sessions set expires_at = now() - interval '1 second' where token = $1`, live); err != nil {
+	if _, err := a.db.ExecContext(ctx,
+		`update sessions set expires_at = datetime('now', '-1 second') where token = $1`, live); err != nil {
 		t.Fatal(err)
 	}
 	if m := a.sessionFor(t, live); m != nil {
@@ -174,15 +166,15 @@ func TestSessionIdleTimeout(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	if _, err := a.pool.Exec(ctx,
-		`update sessions set expires_at = now() + interval '1 hour' where token = $1`, fresh); err != nil {
+	if _, err := a.db.ExecContext(ctx,
+		`update sessions set expires_at = datetime('now', '+1 hour') where token = $1`, fresh); err != nil {
 		t.Fatal(err)
 	}
 	if m := a.sessionFor(t, fresh); m == nil {
 		t.Fatal("session inside the window did not resolve")
 	}
 	var expires time.Time
-	if err := a.pool.QueryRow(ctx,
+	if err := a.db.QueryRowContext(ctx,
 		`select expires_at from sessions where token = $1`, fresh).Scan(&expires); err != nil {
 		t.Fatal(err)
 	}
@@ -196,7 +188,7 @@ func TestBanDropsSessionsAndBlocksLogin(t *testing.T) {
 	ctx := context.Background()
 	mux := a.withMember(a.memberMux())

-	if _, err := a.pool.Exec(ctx, `insert into invites (code) values ('kutsu2')`); err != nil {
+	if _, err := a.db.ExecContext(ctx, `insert into invites (code) values ('kutsu2')`); err != nil {
 		t.Fatal(err)
 	}
 	w := post(t, mux, "/register", url.Values{
@@ -206,7 +198,7 @@ func TestBanDropsSessionsAndBlocksLogin(t *testing.T) {
 		t.Fatalf("registration: status = %d, want 303", w.Code)
 	}
 	var id int64
-	if err := a.pool.QueryRow(ctx, `select id from users where email = '[email protected]'`).Scan(&id); err != nil {
+	if err := a.db.QueryRowContext(ctx, `select id from users where email = '[email protected]'`).Scan(&id); err != nil {
 		t.Fatal(err)
 	}

@@ -216,7 +208,7 @@ func TestBanDropsSessionsAndBlocksLogin(t *testing.T) {
 	}

 	var sessions int
-	if err := a.pool.QueryRow(ctx,
+	if err := a.db.QueryRowContext(ctx,
 		`select count(*) from sessions where user_id = $1`, id).Scan(&sessions); err != nil {
 		t.Fatal(err)
 	}
@@ -1,28 +1,10 @@
 services:
-  postgres:
-    image: postgres:18-alpine
-    environment:
-      POSTGRES_USER: levyraati
-      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?set POSTGRES_PASSWORD in .env}
-      POSTGRES_DB: levyraati
-    volumes:
-      # Postgres 18 keeps its data in /var/lib/postgresql/<version>/docker, so the mount is the
-      # parent directory, not the old /var/lib/postgresql/data.
-      - ./pgdata:/var/lib/postgresql
-    healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U levyraati"]
-      interval: 5s
-      timeout: 3s
-      retries: 10
-    restart: unless-stopped
-
  app:
    build:
      context: .
      args:
        VERSION: ${VERSION:-dev}
    environment:
-      DATABASE_URL: postgres://levyraati:${POSTGRES_PASSWORD}@postgres:5432/levyraati
      ADMIN_USER: ${ADMIN_USER:-admin}
      ADMIN_PASSWORD: ${ADMIN_PASSWORD:?set ADMIN_PASSWORD in .env}
      ADDR: ":8080"
@@ -31,12 +13,10 @@ services:
      ADMIN_ADDR: ":8081"
      SECURE_COOKIES: ${SECURE_COOKIES:-true}
      PUBLIC_URL: ${PUBLIC_URL:-}
+    # The SQLite file sits in here beside the audio, so this one mount is the whole backup.
    volumes:
      - ./storage:/storage
    ports:
      - "8080:8080"
      - "8081:8081"
-    depends_on:
-      postgres:
-        condition: service_healthy
    restart: unless-stopped
@@ -209,3 +209,30 @@ says so.

    The coverage assumption that shaped the earlier sketch was wrong and is corrected in `later.md`:
    LRCLIB has synced lyrics for a good share of Finnish rock, not almost none.
+46. **SQLite instead of Postgres — this reverses entries 1 and 3** (2026-08-02). Ten members and a
+    handful of songs a week never needed a database server, and the server was the last thing making
+    this a two-container deployment. `modernc.org/sqlite` is pure Go, so `CGO_ENABLED=0` survives and
+    the dependency count does not change: `pgx` out, `sqlite` in. What it buys: one container, one
+    bind mount that is the entire backup, no `pgdata`, no healthcheck-gated `depends_on`, no startup
+    retry loop, and tests that run anywhere instead of skipping without `TEST_DATABASE_URL`.
+
+    The port was smaller than expected, because the driver matches `$1`-style placeholders against
+    argument ordinals exactly as pgx does — so no query needed rewriting for parameters. What did
+    change:
+    - **`timestamptz` → `timestamp` holding UTC `YYYY-MM-DD HH:MM:SS`.** The declared type is what
+      makes the driver return `time.Time`; the fixed-width UTC string is what makes `order by
+      created_at` and `expires_at > datetime('now')` mean what they say. `_time_format=datetime` and
+      `_timezone=UTC` on the DSN make Go write exactly the shape `datetime('now')` produces, so the
+      two sources of a timestamp are comparable.
+    - **`interval` has no equivalent.** `sessions.idle_ttl` is seconds as an integer, and the review
+      edit window travels as a SQLite date modifier string (`-1800 seconds`).
+    - **No `stddev_pop`.** The divisive and unified boards use the population formula written out,
+      guarded with `max(0.0, …)` because floating-point cancellation returns a tiny negative when
+      every score is identical, and `sqrt` of that is null.
+    - **`foreign_keys` is off by default in SQLite**, so every `on delete cascade` in the schema is
+      decoration without the pragma. It is set on the DSN alongside WAL, `busy_timeout` and
+      `_txlock=immediate`.
+
+    Taken while there was still no data: the tables were recreated rather than converted, same as
+    entry 45. What would reverse this: enough concurrent writers that one writer is a real limit, or
+    wanting the database on a different box from the audio files.
@@ -84,7 +84,7 @@ The constraint that shapes every idea: **E2B-class multimodal models are speech
 encoder targets ASR and spoken-audio QA. Music is out of distribution — genre calls are near
 coin-flips, "describe this track" produces beige copy, and singing over instrumentation is a worst
 case for ASR. Encoders also work in ~30 s windows, so a four-minute song is a chunk loop, and on CPU
-beside Postgres and ffmpeg that is minutes per submission.
+beside ffmpeg that is minutes per submission.

 So the ideas that use the model to be *correct* are the weak ones, and the idea that uses it to be
 *entertaining* is the strong one:
@@ -327,12 +327,13 @@ and the average.
 Always public, ignores the reveal rule. Minimum **3 reviews** for a song to qualify for any ranking;
 `min_reviews` is published, not hardcoded in a client.

- Songs: Top 10 all-time, Bottom 10, Most Divisive (highest `stddev_pop`), Most Unified (lowest),
+- Songs: Top 10 all-time, Bottom 10, Most Divisive (highest score spread), Most Unified (lowest),
  Most Reviewed.
 - Reviewers: Harshest Critic (lowest average given), Most Generous, Most Active, Most Prolific
  Submitter.
- Postgres does all of it: `avg()`, `count()`, `stddev_pop()`, `HAVING count(*) >= 3`. Order and
-  limit in SQL, never in Go.
+- SQL does all of it: `avg()`, `count()`, `HAVING count(*) >= 3`. Order and limit in SQL, never in
+  Go. SQLite has no `stddev_pop`, so the divisive/unified boards spell the population formula out —
+  see `stddevPop` in `stats.go`.
 - **Every leaderboard needs a deterministic tie-break** — `ORDER BY value DESC, review_count DESC,
  id ASC`. Ties are common in a ten-person club, and without one the list reshuffles between reloads
  for no reason.
@@ -385,7 +386,7 @@ func requireAdmin(next http.Handler) http.Handler {
 ```

 No bcrypt here: hashing protects *stored* passwords against a database leak, and this one lives in
-the env file next to the Postgres password already. The constant-time compare is the part that
+the env file already. The constant-time compare is the part that
 matters. **Fatal at startup if `ADMIN_PASSWORD` is unset** — an admin panel that silently opens is
 worse than one that will not boot.

@@ -519,7 +520,7 @@ the first endpoint is one line over a data function that already exists.
 - `snake_case` field names, matching the SQL columns.
 - Timestamps are RFC 3339 UTC strings (`2026-08-01T10:00:00Z`). Never preformatted, never a locale
  string, never a unix int.
- Ids are JSON numbers (`bigserial`, safely under 2⁵³).
+- Ids are JSON numbers (SQLite rowids, safely under 2⁵³).
 - Nullable fields are present and `null`. **No `omitempty`** — a stable key set is worth more than a
  few bytes, and "missing" versus "null" is a distinction clients get wrong.
 - Scores are integers, averages are floats.
@@ -642,33 +643,41 @@ reason the count-based lists stay until they are proven useless.

 ## 9. Data model

-Ids are `bigserial`. Session tokens stay random — those are secrets, ids are not, and enumerable ids
-are not a threat model for a login-walled app for ten friends.
+Ids are `integer primary key autoincrement` — never reused, because `storage/audio/<song_id>.ogg` is
+named after one. Session tokens stay random — those are secrets, ids are not, and enumerable ids are
+not a threat model for a login-walled app for ten friends.
+
+Timestamps are declared `timestamp` and hold UTC `YYYY-MM-DD HH:MM:SS`: the declared type is what
+makes the driver return `time.Time`, and the fixed-width UTC string is what makes ordering and
+comparison against `datetime('now')` mean what they say. Booleans are `integer`, 0 or 1.

 ```sql
-users       (id bigserial pk, name, email unique, password_hash, avatar, banned, created_at)
-sessions    (token pk, user_id fk not null, idle_ttl interval not null,
+users       (id pk, name, email unique, password_hash, avatar, banned, created_at)
+sessions    (token pk, user_id fk not null, idle_ttl integer not null,   -- seconds
             expires_at, created_at)          -- token: 32 random bytes, hex
-songs       (id bigserial pk, title, artist, genre, description, audio_file,
-             duration_seconds int,
+songs       (id pk, title, artist, genre, description, lyrics, audio_file,
+             duration_seconds integer,
             source_url,          -- nullable, for YouTube submissions
             submitted_by fk users, created_at)
-submissions (id bigserial pk, user_id fk not null,
+submissions (id pk, user_id fk not null,
             status text not null default 'queued',   -- queued|downloading|converting|ready|failed
             status_msg text,
             source_url, tmp_path,
-             title, artist, genre, description,
+             title, artist, genre, description, lyrics,
             created_at)
-reviews     (id bigserial pk, song_id fk on delete cascade, reviewer_id fk users,
-             score int, text, created_at, updated_at,
+reviews     (id pk, song_id fk on delete cascade, reviewer_id fk users,
+             score integer, text, created_at, updated_at,
             unique (song_id, reviewer_id))
-invites     (id bigserial pk, code unique, is_valid bool, created_at)
-reports     (id bigserial pk, user_id fk not null, body text not null,
+invites     (id pk, code unique, is_valid integer, created_at)
+reports     (id pk, user_id fk not null, body text not null,
             page text, user_agent text,
-             resolved_at timestamptz,   -- null = open
+             resolved_at timestamp,   -- null = open
             created_at)
 ```

+`foreign_keys` is off by default in SQLite, so the cascades above only exist because the pragma is
+set on every connection — see `openDB` in `main.go`.
+
 No `role` column (§6). No `status` on `songs` (§4).

 Also: `CHECK (score BETWEEN 1 AND 100)`, `NOT NULL` on everything required, an index on
@@ -719,8 +728,8 @@ Everything else is forms and `INSERT`s. No framework, no fixtures beyond a test
 Each step leaves something runnable. Registration needs an invite and invites come from the admin
 panel, so the admin surface comes first — before a single member can exist.

-1. **Skeleton** — `main.go`, embedded migrations at startup, pgxpool, slog, Docker Compose, the two
-   listeners.
+1. **Skeleton** — `main.go`, embedded migrations at startup, `database/sql`, slog, Docker Compose,
+   the two listeners.
 2. **Admin, invites, auth** — Basic Auth listener, mint an invite, register, log in, sessions, ban.
 3. **Submission pipeline, upload path only** — submit, convert, waiting page, publish. No yt-dlp yet,
   so the hard parts (worker, publish transaction, restart recovery) are proven without a network
@@ -1,14 +1,20 @@
 module git.kessinen.com/kessinen/levyraati26-go

-go 1.24
-
-require github.com/jackc/pgx/v5 v5.7.2
+go 1.25.0

 require (
-	github.com/jackc/pgpassfile v1.0.0 // indirect
-	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
-	github.com/jackc/puddle/v2 v2.2.2 // indirect
-	golang.org/x/crypto v0.32.0 // indirect
-	golang.org/x/sync v0.10.0 // indirect
-	golang.org/x/text v0.21.0 // indirect
+	golang.org/x/crypto v0.32.0
+	modernc.org/sqlite v1.54.0
+)
+
+require (
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/ncruces/go-strftime v1.0.0 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
+	golang.org/x/sys v0.46.0 // indirect
+	modernc.org/libc v1.74.1 // indirect
+	modernc.org/mathutil v1.7.1 // indirect
+	modernc.org/memory v1.11.0 // indirect
 )
@@ -1,6 +1,10 @@
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
+github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
 github.com/jackc/pgpassfile v1.0.0/go.mod h1:CEx0iS5ambNFdcRtxPj5JhEz+xB6uRky5eyVu/W2HEg=
 github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 h1:iCEnooe7UlwOQYpKFhBabPMi4aNAfoODPEFNiAnClxo=
@@ -9,8 +13,14 @@ github.com/jackc/pgx/v5 v5.7.2 h1:mLoDLV6sonKlvjIEsV56SkWNCnuNv531l94GaIzO+XI=
 github.com/jackc/pgx/v5 v5.7.2/go.mod h1:ncY89UGWxg82EykZUwSpUKEfccBGGYq1xjrOpsbsfGQ=
 github.com/jackc/puddle/v2 v2.2.2 h1:PR8nw+E/1w0GLuRFSmiioY6UooMp6KJv0/61nB7icHo=
 github.com/jackc/puddle/v2 v2.2.2/go.mod h1:vriiEXHvEE654aYKXXjOvZM39qJ0q+azkZFrfEOc3H4=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/ncruces/go-strftime v1.0.0 h1:HMFp8mLCTPp341M/ZnA4qaf7ZlsbTc+miZjCLOFAw7w=
+github.com/ncruces/go-strftime v1.0.0/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
@@ -20,9 +30,21 @@ golang.org/x/crypto v0.32.0 h1:euUpcYgM8WcP71gNpTqQCn6rC2t6ULUPiOzfWaXVVfc=
 golang.org/x/crypto v0.32.0/go.mod h1:ZnnJkOaASj8g0AjIduWNlq2NRxL0PlBrbKVyZ6V/Ugc=
 golang.org/x/sync v0.10.0 h1:3NQrjDixjgGwUOCaF8w2+VYHv0Ve/vGYSbdkTa98gmQ=
 golang.org/x/sync v0.10.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sync v0.21.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.46.0 h1:noSf2Fq6F8DBgS+LysIkx7rIExoNHJsxOAtPp4rthXw=
+golang.org/x/sys v0.46.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
 golang.org/x/text v0.21.0 h1:zyQAAkrwaneQ066sspRyJaG9VNi/YJ1NfzcGB3hZ/qo=
 golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+modernc.org/libc v1.74.1 h1:bdR4VTKFMC4966QSNZ05XLGI/VwzVa2kTUX51Dm0riQ=
+modernc.org/libc v1.74.1/go.mod h1:uH4t5bOx3G3g9Xcmj10YKlTcVISlRDwv8VoQJG9n8Os=
+modernc.org/mathutil v1.7.1 h1:GCZVGXdaN8gTqB1Mf/usp1Y/hSqgI2vAGGP4jZMCxOU=
+modernc.org/mathutil v1.7.1/go.mod h1:4p5IwJITfppl0G4sUEDtCr4DthTaT47/N3aT6MhfgJg=
+modernc.org/memory v1.11.0 h1:o4QC8aMQzmcwCK3t3Ux/ZHmwFPzE6hf2Y5LbkRs+hbI=
+modernc.org/memory v1.11.0/go.mod h1:/JP4VbVC+K5sU2wZi9bHoq2MAkCnrt2r98UGeSK7Mjw=
+modernc.org/sqlite v1.54.0 h1:JCxR4qwkJvOaqAoYcgDoO25Nc+ROg6EJ2LfBVzdrgog=
+modernc.org/sqlite v1.54.0/go.mod h1:4ntCLuNmnH8+GNqjka1wNg7KJd5/Hi5FYp8K+XQ7GZw=
@@ -241,14 +241,14 @@ func (a *app) autoFetchLyrics(ctx context.Context, subID int64, title, artist st
 	if lyrics == "" {
 		return
 	}
-	tag, err := a.pool.Exec(ctx,
+	res, err := a.db.ExecContext(ctx,
 		`update submissions set lyrics = $2 where id = $1 and lyrics is null`,
 		subID, cleanLyrics(lyrics))
 	if err != nil {
 		slog.Error("save lyrics", "ctx", "submissions", "error", err, "submission", subID)
 		return
 	}
-	if tag.RowsAffected() > 0 {
+	if affected(res) > 0 {
 		slog.Info("lyrics found", "ctx", "submissions", "submission", subID)
 	}
 }
@@ -3,22 +3,22 @@ package main
 import (
 	"context"
 	"crypto/subtle"
+	"database/sql"
 	"fmt"
 	"log/slog"
 	"net/http"
 	"os"
 	"path/filepath"
 	"strings"
-	"time"

-	"github.com/jackc/pgx/v5/pgxpool"
+	_ "modernc.org/sqlite"
 )

 // Set at build time with -ldflags "-X main.version=…". A local `go build` honestly says dev.
 var version = "dev"

 type config struct {
-	databaseURL   string
+	dbPath        string
 	adminUser     string
 	adminPass     string
 	addr          string
@@ -32,7 +32,6 @@ type config struct {

 func loadConfig() config {
 	c := config{
-		databaseURL:   os.Getenv("DATABASE_URL"),
 		adminUser:     env("ADMIN_USER", "admin"),
 		adminPass:     os.Getenv("ADMIN_PASSWORD"),
 		addr:          env("ADDR", ":8080"),
@@ -41,9 +40,8 @@ func loadConfig() config {
 		secureCookies: env("SECURE_COOKIES", "true") != "false",
 		publicURL:     strings.TrimRight(os.Getenv("PUBLIC_URL"), "/"),
 	}
-	if c.databaseURL == "" {
-		fatal("DATABASE_URL is not set")
-	}
+	// The database lives beside the audio, so one volume is the whole backup.
+	c.dbPath = env("DB_PATH", filepath.Join(c.storageDir, "levyraati.db"))
 	// An admin panel that silently opens is worse than one that won't boot.
 	if c.adminPass == "" {
 		fatal("ADMIN_PASSWORD is not set")
@@ -65,49 +63,67 @@ func fatal(msg string, args ...any) {

 type app struct {
 	cfg    config
-	pool   *pgxpool.Pool
+	db     *sql.DB
 	logins limiter // zero value is ready to use
 }

+// openDB opens the file with the pragmas the schema assumes. foreign_keys is off by default in
+// SQLite, so without it every `on delete cascade` is decoration; WAL plus busy_timeout is what lets
+// a conversion goroutine write while a request reads; _txlock=immediate takes the write lock at
+// BEGIN rather than failing partway through a transaction that started out reading.
+//
+// _time_format and _timezone make Go write timestamps in exactly the shape datetime('now')
+// produces, so the two sources of a timestamp sort and compare against each other.
+func openDB(path string) (*sql.DB, error) {
+	return sql.Open("sqlite", "file:"+path+"?"+strings.Join([]string{
+		"_pragma=busy_timeout(5000)",
+		"_pragma=journal_mode(WAL)",
+		"_pragma=foreign_keys(1)",
+		"_pragma=synchronous(NORMAL)",
+		"_time_format=datetime",
+		"_timezone=UTC",
+		"_txlock=immediate",
+	}, "&"))
+}
+
+// database/sql splits the row count off into a second return value. Every caller here only asks
+// whether the statement matched anything, and a driver that could not report a count would already
+// have failed at Exec.
+func affected(res sql.Result) int64 {
+	n, _ := res.RowsAffected()
+	return n
+}
+
 func main() {
 	slog.SetDefault(slog.New(slog.NewJSONHandler(os.Stdout, nil)))
 	slog.Info("starting", "ctx", "startup", "version", version)
 	cfg := loadConfig()

 	ctx := context.Background()
-	pool, err := pgxpool.New(ctx, cfg.databaseURL)
-	if err != nil {
-		fatal("database connect", "error", err)
-	}
-	defer pool.Close()
-
-	// Wait for Postgres rather than crash-looping past a healthcheck that hasn't gone green yet.
-	for i := 0; ; i++ {
-		pingCtx, cancel := context.WithTimeout(ctx, 3*time.Second)
-		err = pool.Ping(pingCtx)
-		cancel()
-		if err == nil {
-			break
-		}
-		if i == 10 {
-			fatal("database unreachable", "error", err)
-		}
-		time.Sleep(time.Second)
-	}
-
-	if err := migrate(ctx, pool); err != nil {
-		fatal("migrations", "error", err)
-	}
-	if err := sweep(ctx, pool); err != nil {
-		fatal("startup sweep", "error", err)
-	}
+	// The storage directories come first: the database file lives in one of them.
 	for _, dir := range []string{"audio", "tmp", "avatars"} {
 		if err := os.MkdirAll(filepath.Join(cfg.storageDir, dir), 0o755); err != nil {
 			fatal("storage dir", "error", err, "dir", dir)
 		}
 	}

-	a := &app{cfg: cfg, pool: pool}
+	db, err := openDB(cfg.dbPath)
+	if err != nil {
+		fatal("database open", "error", err)
+	}
+	defer db.Close()
+	if err := db.PingContext(ctx); err != nil {
+		fatal("database unreachable", "error", err, "path", cfg.dbPath)
+	}
+
+	if err := migrate(ctx, db); err != nil {
+		fatal("migrations", "error", err)
+	}
+	if err := sweep(ctx, db); err != nil {
+		fatal("startup sweep", "error", err)
+	}
+
+	a := &app{cfg: cfg, db: db}

 	// ponytail: two listeners, one process. Admin is loopback-only — reach it over an SSH tunnel
 	// or the reverse proxy. A separate binary would need its own deploy and would race the
@@ -127,7 +143,7 @@ func (a *app) memberMux() *http.ServeMux {
 	mux.Handle("GET /static/", http.FileServerFS(assetFS))

 	mux.HandleFunc("GET /healthz", func(w http.ResponseWriter, r *http.Request) {
-		if err := a.pool.Ping(r.Context()); err != nil {
+		if err := a.db.PingContext(r.Context()); err != nil {
 			http.Error(w, "db down", http.StatusServiceUnavailable)
 			return
 		}
@@ -195,7 +211,7 @@ func (a *app) adminMux() *http.ServeMux {
 // (close the browser). Add a cookie session if a second admin ever needs one.
 //
 // No bcrypt: hashing protects stored passwords against a database leak, and this one lives in the
-// env file next to the Postgres password already. The constant-time compare is the part that matters.
+// env file already. The constant-time compare is the part that matters.
 func (a *app) requireAdmin(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		u, p, ok := r.BasicAuth()
@@ -4,10 +4,7 @@ import (
 	"context"
 	"net/http"
 	"net/http/httptest"
-	"os"
 	"testing"
-
-	"github.com/jackc/pgx/v5/pgxpool"
 )

 func TestRequireAdmin(t *testing.T) {
@@ -40,33 +37,19 @@ func TestRequireAdmin(t *testing.T) {
 	}
 }

-// Set TEST_DATABASE_URL to run this against a throwaway database.
 func TestMigrateIsIdempotent(t *testing.T) {
-	url := os.Getenv("TEST_DATABASE_URL")
-	if url == "" {
-		t.Skip("TEST_DATABASE_URL not set")
-	}
 	ctx := context.Background()
-	pool, err := pgxpool.New(ctx, url)
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer pool.Close()
+	a := testApp(t) // already migrated once

-	if _, err := pool.Exec(ctx, `drop schema public cascade; create schema public`); err != nil {
-		t.Fatal(err)
+	if err := migrate(ctx, a.db); err != nil {
+		t.Fatalf("second migrate: %v", err)
 	}
-	for i := range 2 {
-		if err := migrate(ctx, pool); err != nil {
-			t.Fatalf("migrate run %d: %v", i+1, err)
-		}
-	}
-	if err := sweep(ctx, pool); err != nil {
+	if err := sweep(ctx, a.db); err != nil {
 		t.Fatalf("sweep: %v", err)
 	}

 	var n int
-	if err := pool.QueryRow(ctx, `select count(*) from schema_migrations`).Scan(&n); err != nil {
+	if err := a.db.QueryRowContext(ctx, `select count(*) from schema_migrations`).Scan(&n); err != nil {
 		t.Fatal(err)
 	}
 	if n != 1 {
@@ -2,12 +2,11 @@ package main

 import (
 	"context"
+	"database/sql"
 	"embed"
 	"fmt"
 	"log/slog"
 	"sort"
-
-	"github.com/jackc/pgx/v5/pgxpool"
 )

 //go:embed migrations/*.sql
@@ -15,17 +14,17 @@ var migrationFS embed.FS

 // migrate applies every migrations/*.sql not yet recorded, in filename order, each in its own
 // transaction. Applied names are the record — a file that changes after it ran is not re-applied.
-func migrate(ctx context.Context, pool *pgxpool.Pool) error {
-	_, err := pool.Exec(ctx, `create table if not exists schema_migrations (
+func migrate(ctx context.Context, db *sql.DB) error {
+	_, err := db.ExecContext(ctx, `create table if not exists schema_migrations (
 		name       text primary key,
-		applied_at timestamptz not null default now()
+		applied_at timestamp not null default (datetime('now'))
 	)`)
 	if err != nil {
 		return fmt.Errorf("create schema_migrations: %w", err)
 	}

 	applied := map[string]bool{}
-	rows, err := pool.Query(ctx, `select name from schema_migrations`)
+	rows, err := db.QueryContext(ctx, `select name from schema_migrations`)
 	if err != nil {
 		return fmt.Errorf("read schema_migrations: %w", err)
 	}
@@ -60,19 +59,19 @@ func migrate(ctx context.Context, pool *pgxpool.Pool) error {
 		if err != nil {
 			return err
 		}
-		tx, err := pool.Begin(ctx)
+		tx, err := db.BeginTx(ctx, nil)
 		if err != nil {
 			return err
 		}
-		if _, err := tx.Exec(ctx, string(sql)); err != nil {
-			tx.Rollback(ctx)
+		if _, err := tx.ExecContext(ctx, string(sql)); err != nil {
+			tx.Rollback()
 			return fmt.Errorf("migration %s: %w", name, err)
 		}
-		if _, err := tx.Exec(ctx, `insert into schema_migrations (name) values ($1)`, name); err != nil {
-			tx.Rollback(ctx)
+		if _, err := tx.ExecContext(ctx, `insert into schema_migrations (name) values ($1)`, name); err != nil {
+			tx.Rollback()
 			return err
 		}
-		if err := tx.Commit(ctx); err != nil {
+		if err := tx.Commit(); err != nil {
 			return fmt.Errorf("migration %s: %w", name, err)
 		}
 		slog.Info("migration applied", "ctx", "startup", "name", name)
@@ -82,29 +81,31 @@ func migrate(ctx context.Context, pool *pgxpool.Pool) error {

 // sweep runs the startup cleanup from docs/spec.md §4.6. An in-process conversion goroutine dies
 // with the process, so without this those rows say "converting" forever.
-func sweep(ctx context.Context, pool *pgxpool.Pool) error {
-	tag, err := pool.Exec(ctx, `update submissions
+func sweep(ctx context.Context, db *sql.DB) error {
+	res, err := db.ExecContext(ctx, `update submissions
 		set status = 'failed', status_msg = 'interrupted by restart'
 		where status in ('queued', 'downloading', 'converting')`)
 	if err != nil {
 		return err
 	}
-	if n := tag.RowsAffected(); n > 0 {
+	if n := affected(res); n > 0 {
 		slog.Warn("submissions interrupted by restart", "ctx", "startup", "count", n)
 	}

 	// ponytail: temp files of swept submissions are unlinked with the row in step 3, once the
 	// pipeline exists and there is something to unlink.
-	if _, err := pool.Exec(ctx,
-		`delete from submissions where created_at < now() - interval '7 days'`); err != nil {
+	if _, err := db.ExecContext(ctx,
+		`delete from submissions where created_at < datetime('now', '-7 days')`); err != nil {
 		return err
 	}
-	if _, err := pool.Exec(ctx, `delete from sessions where expires_at < now()`); err != nil {
+	if _, err := db.ExecContext(ctx,
+		`delete from sessions where expires_at < datetime('now')`); err != nil {
 		return err
 	}

 	var failed int
-	err = pool.QueryRow(ctx, `select count(*) from submissions where status = 'failed'`).Scan(&failed)
+	err = db.QueryRowContext(ctx,
+		`select count(*) from submissions where status = 'failed'`).Scan(&failed)
 	if err != nil {
 		return err
 	}
@@ -1,52 +1,56 @@
+-- Timestamps are declared `timestamp` and hold UTC 'YYYY-MM-DD HH:MM:SS': the declared type is what
+-- makes the driver hand them back as time.Time, and a fixed-width UTC string is what makes
+-- `order by created_at` and `expires_at > datetime('now')` mean what they say.
+
 create table users (
-    id            bigserial primary key,
-    name          text        not null,
-    email         text        not null unique,
-    password_hash text        not null,
+    id            integer   primary key autoincrement,
+    name          text      not null,
+    email         text      not null unique,
+    password_hash text      not null,
    avatar        text,
-    banned        boolean     not null default false,
-    created_at    timestamptz not null default now()
+    banned        integer   not null default 0,
+    created_at    timestamp not null default (datetime('now'))
 );

 create table sessions (
-    token      text        primary key,
-    user_id    bigint      not null references users (id) on delete cascade,
-    idle_ttl   interval    not null,
-    expires_at timestamptz not null,
-    created_at timestamptz not null default now()
+    token      text      primary key,
+    user_id    integer   not null references users (id) on delete cascade,
+    idle_ttl   integer   not null, -- seconds; SQLite has no interval type
+    expires_at timestamp not null,
+    created_at timestamp not null default (datetime('now'))
 );

-create index on sessions (user_id);
+create index sessions_user on sessions (user_id);

 create table invites (
-    id         bigserial   primary key,
-    code       text        not null unique,
-    is_valid   boolean     not null default true,
-    created_at timestamptz not null default now()
+    id         integer   primary key autoincrement,
+    code       text      not null unique,
+    is_valid   integer   not null default 1,
+    created_at timestamp not null default (datetime('now'))
 );

 create table songs (
-    id               bigserial   primary key,
-    title            text        not null,
-    artist           text        not null,
-    genre            text        not null,
+    id               integer   primary key autoincrement,
+    title            text      not null,
+    artist           text      not null,
+    genre            text      not null,
    description      text,
    -- LRC or plain text, told apart by whether the first line starts with '['. Not covered by the
    -- lock: nobody reviewed the lyrics.
    lyrics           text,
-    audio_file       text        not null,
-    duration_seconds integer     not null,
+    audio_file       text      not null,
+    duration_seconds integer   not null,
    source_url       text,
-    submitted_by     bigint      not null references users (id),
-    created_at       timestamptz not null default now()
+    submitted_by     integer   not null references users (id),
+    created_at       timestamp not null default (datetime('now'))
 );

-create index on songs (created_at desc);
+create index songs_created_at on songs (created_at desc);

 create table submissions (
-    id          bigserial   primary key,
-    user_id     bigint      not null references users (id) on delete cascade,
-    status      text        not null default 'queued',
+    id          integer   primary key autoincrement,
+    user_id     integer   not null references users (id) on delete cascade,
+    status      text      not null default 'queued',
    status_msg  text,
    source_url  text,
    tmp_path    text,
@@ -55,37 +59,37 @@ create table submissions (
    genre       text,
    description text,
    lyrics      text,
-    created_at  timestamptz not null default now(),
+    created_at  timestamp not null default (datetime('now')),
    constraint submissions_status check (
        status in ('queued', 'downloading', 'converting', 'ready', 'failed')
    )
 );

 -- The submission quota (5 per rolling 24h, failures excluded) reads this.
-create index on submissions (user_id, created_at desc);
+create index submissions_user_created on submissions (user_id, created_at desc);

 create table reviews (
-    id          bigserial   primary key,
-    song_id     bigint      not null references songs (id) on delete cascade,
-    reviewer_id bigint      not null references users (id),
-    score       integer     not null check (score between 1 and 100),
-    text        text        not null,
-    created_at  timestamptz not null default now(),
-    updated_at  timestamptz not null default now(),
+    id          integer   primary key autoincrement,
+    song_id     integer   not null references songs (id) on delete cascade,
+    reviewer_id integer   not null references users (id),
+    score       integer   not null check (score between 1 and 100),
+    text        text      not null,
+    created_at  timestamp not null default (datetime('now')),
+    updated_at  timestamp not null default (datetime('now')),
    unique (song_id, reviewer_id)
 );

-create index on reviews (song_id);
+create index reviews_song on reviews (song_id);

 -- The queue asks "songs this member has not reviewed" — that lookup is by reviewer.
-create index on reviews (reviewer_id, song_id);
+create index reviews_reviewer_song on reviews (reviewer_id, song_id);

 create table reports (
-    id          bigserial   primary key,
-    user_id     bigint      not null references users (id) on delete cascade,
-    body        text        not null,
+    id          integer   primary key autoincrement,
+    user_id     integer   not null references users (id) on delete cascade,
+    body        text      not null,
    page        text,
    user_agent  text,
-    resolved_at timestamptz,
-    created_at  timestamptz not null default now()
+    resolved_at timestamp,
+    created_at  timestamp not null default (datetime('now'))
 );
@@ -2,6 +2,7 @@ package main

 import (
 	"context"
+	"database/sql"
 	"errors"
 	"io"
 	"log/slog"
@@ -12,7 +13,6 @@ import (
 	"strings"
 	"time"

-	"github.com/jackc/pgx/v5"
 	"golang.org/x/crypto/bcrypt"
 )

@@ -47,12 +47,12 @@ func (a *app) avatarPath(userID int64) string {
 // per-song opinion is gated, whole-history aggregate is public.
 func (a *app) profile(ctx context.Context, viewerID, userID int64) (*profileView, error) {
 	var p profileView
-	err := a.pool.QueryRow(ctx, `
+	err := a.db.QueryRowContext(ctx, `
 		select u.id, u.name, u.email, u.avatar, u.created_at,
 		       (select count(*) from songs s where s.submitted_by = u.id),
 		       (select count(*) from reviews r where r.reviewer_id = u.id),
-		       (select avg(r.score)::float from reviews r where r.reviewer_id = u.id),
-		       (select avg(r.score)::float from reviews r
+		       (select avg(r.score) from reviews r where r.reviewer_id = u.id),
+		       (select avg(r.score) from reviews r
 		          join songs s on s.id = r.song_id where s.submitted_by = u.id)
 		  from users u where u.id = $1`, userID).
 		Scan(&p.ID, &p.Name, &p.Email, &p.Avatar, &p.CreatedAt,
@@ -67,7 +67,7 @@ func (a *app) profile(ctx context.Context, viewerID, userID int64) (*profileView
 	}

 	// Their songs, with the viewer's own reveal rule applied to each average.
-	rows, err := a.pool.Query(ctx, `select`+songColumns+`
+	rows, err := a.db.QueryContext(ctx, `select`+songColumns+`
 		  from songs s join users u on u.id = s.submitted_by
 		 where s.submitted_by = $2
 		 order by s.created_at desc`, viewerID, userID)
@@ -90,7 +90,7 @@ func (a *app) profilePage(w http.ResponseWriter, r *http.Request) {
 		id = parsed
 	}
 	p, err := a.profile(r.Context(), me.ID, id)
-	if errors.Is(err, pgx.ErrNoRows) {
+	if errors.Is(err, sql.ErrNoRows) {
 		http.NotFound(w, r)
 		return
 	} else if err != nil {
@@ -120,7 +120,7 @@ func (a *app) editProfile(w http.ResponseWriter, r *http.Request) {
 		return
 	}

-	if _, err := a.pool.Exec(r.Context(),
+	if _, err := a.db.ExecContext(r.Context(),
 		`update users set name = $2, email = $3 where id = $1`, me.ID, name, email); isUnique(err) {
 		a.flash(w, "Sähköpostiosoite on jo käytössä.")
 		http.Redirect(w, r, "/profile", http.StatusSeeOther)
@@ -153,7 +153,7 @@ func (a *app) editProfile(w http.ResponseWriter, r *http.Request) {

 func (a *app) changePassword(w http.ResponseWriter, r *http.Request, userID int64, current, next string) bool {
 	var hash string
-	if err := a.pool.QueryRow(r.Context(),
+	if err := a.db.QueryRowContext(r.Context(),
 		`select password_hash from users where id = $1`, userID).Scan(&hash); err != nil {
 		http.Error(w, "virhe", http.StatusInternalServerError)
 		return false
@@ -168,13 +168,13 @@ func (a *app) changePassword(w http.ResponseWriter, r *http.Request, userID int6
 		http.Error(w, "virhe", http.StatusInternalServerError)
 		return false
 	}
-	if _, err := a.pool.Exec(r.Context(),
+	if _, err := a.db.ExecContext(r.Context(),
 		`update users set password_hash = $2 where id = $1`, userID, string(newHash)); err != nil {
 		http.Error(w, "virhe", http.StatusInternalServerError)
 		return false
 	}
 	// Every other session dies; this browser keeps its own.
-	if _, err := a.pool.Exec(r.Context(),
+	if _, err := a.db.ExecContext(r.Context(),
 		`delete from sessions where user_id = $1 and token <> $2`, userID, sessionToken(r)); err != nil {
 		slog.Error("drop sessions", "ctx", "auth", "error", err, "user", userID)
 	}
@@ -202,7 +202,7 @@ func (a *app) saveAvatar(r *http.Request, userID int64, file io.Reader) error {
 	if err := toAvatarJPEG(r.Context(), tmp, out); err != nil {
 		return err
 	}
-	_, err = a.pool.Exec(r.Context(),
+	_, err = a.db.ExecContext(r.Context(),
 		`update users set avatar = $2 where id = $1`, userID, filepath.Base(out))
 	return err
 }
@@ -78,8 +78,8 @@ func (a *app) render(w http.ResponseWriter, r *http.Request, status int, name st
 	p.Version = version
 	if p.Member != nil {
 		// The queue is a worklist, so its size belongs in the nav.
-		a.pool.QueryRow(r.Context(), `
-			select count(*)::int from songs s
+		a.db.QueryRowContext(r.Context(), `
+			select count(*) from songs s
 			 where s.submitted_by <> $1
 			   and not exists (select 1 from reviews r
 			                    where r.song_id = s.id and r.reviewer_id = $1)`,
@@ -47,7 +47,7 @@ func (a *app) reportPage(w http.ResponseWriter, r *http.Request) {

 // Seeing your own past reports is what stops the same bug arriving four times.
 func (a *app) myReports(ctx context.Context, userID int64) ([]*report, error) {
-	rows, err := a.pool.Query(ctx, `
+	rows, err := a.db.QueryContext(ctx, `
 		select id, body, coalesce(page, ''), resolved_at, created_at
 		  from reports where user_id = $1 order by created_at desc`, userID)
 	if err != nil {
@@ -79,7 +79,7 @@ func (a *app) createReport(w http.ResponseWriter, r *http.Request) {
 	}

 	// "Only on my phone" is the most common bug report and this answers it without asking.
-	_, err := a.pool.Exec(r.Context(), `
+	_, err := a.db.ExecContext(r.Context(), `
 		insert into reports (user_id, body, page, user_agent) values ($1, $2, nullif($3, ''), $4)`,
 		me.ID, body, from, clean(r.Header.Get("User-Agent"), 300))
 	if err != nil {
@@ -95,7 +95,7 @@ func (a *app) createReport(w http.ResponseWriter, r *http.Request) {
 // --- admin ---

 func (a *app) adminReports(w http.ResponseWriter, r *http.Request) {
-	rows, err := a.pool.Query(r.Context(), `
+	rows, err := a.db.QueryContext(r.Context(), `
 		select rep.id, rep.body, coalesce(rep.page, ''), coalesce(rep.user_agent, ''),
 		       u.name, rep.resolved_at, rep.created_at
 		  from reports rep join users u on u.id = rep.user_id
@@ -130,8 +130,9 @@ func (a *app) resolveReport(w http.ResponseWriter, r *http.Request) {
 		http.NotFound(w, r)
 		return
 	}
-	if _, err := a.pool.Exec(r.Context(),
-		`update reports set resolved_at = case when resolved_at is null then now() end where id = $1`,
+	if _, err := a.db.ExecContext(r.Context(),
+		`update reports set resolved_at = case when resolved_at is null then datetime('now') end
+		  where id = $1`,
 		id); err != nil {
 		adminError(w, "reports", err)
 		return
@@ -147,12 +148,12 @@ func (a *app) adminDeleteSong(w http.ResponseWriter, r *http.Request) {
 		http.NotFound(w, r)
 		return
 	}
-	tag, err := a.pool.Exec(r.Context(), `delete from songs where id = $1`, id)
+	res, err := a.db.ExecContext(r.Context(), `delete from songs where id = $1`, id)
 	if err != nil {
 		adminError(w, "songs", err)
 		return
 	}
-	if tag.RowsAffected() > 0 {
+	if affected(res) > 0 {
 		removeFile(a.audioPath(id))
 		slog.Info("song deleted by admin", "ctx", "songs", "song", id)
 		a.flash(w, "Kappale poistettu.")
@@ -170,9 +171,9 @@ type adminSong struct {
 }

 func (a *app) adminSongs(ctx context.Context) ([]adminSong, error) {
-	rows, err := a.pool.Query(ctx, `
+	rows, err := a.db.QueryContext(ctx, `
 		select s.id, s.title, s.artist, u.name,
-		       (select count(*) from reviews r where r.song_id = s.id)::int, s.created_at
+		       (select count(*) from reviews r where r.song_id = s.id), s.created_at
 		  from songs s join users u on u.id = s.submitted_by
 		 order by s.created_at desc`)
 	if err != nil {
@@ -2,14 +2,13 @@ package main

 import (
 	"context"
+	"database/sql"
 	"errors"
 	"fmt"
 	"log/slog"
 	"net/http"
 	"strconv"
 	"time"
-
-	"github.com/jackc/pgx/v5"
 )

 const (
@@ -17,6 +16,10 @@ const (
 	maxReview  = 5000
 )

+// The same window as a SQLite date modifier, for the two statements that enforce it. SQLite has no
+// interval type to bind, so the unit travels in the string.
+var editWindowAgo = fmt.Sprintf("-%d seconds", int(editWindow.Seconds()))
+
 type review struct {
 	ID         int64
 	SongID     int64
@@ -40,7 +43,7 @@ func (r *review) Initials() string {
 }

 func (a *app) reviewsFor(ctx context.Context, songID, viewerID int64) ([]*review, error) {
-	rows, err := a.pool.Query(ctx, `
+	rows, err := a.db.QueryContext(ctx, `
 		select r.id, r.song_id, r.reviewer_id, u.name, r.score, r.text, r.created_at, r.updated_at,
 		       r.reviewer_id = $2
 		  from reviews r join users u on u.id = r.reviewer_id
@@ -64,13 +67,13 @@ func (a *app) reviewsFor(ctx context.Context, songID, viewerID int64) ([]*review

 func (a *app) viewerReview(ctx context.Context, songID, viewerID int64) (*review, error) {
 	var v review
-	err := a.pool.QueryRow(ctx, `
+	err := a.db.QueryRowContext(ctx, `
 		select r.id, r.song_id, r.reviewer_id, u.name, r.score, r.text, r.created_at, r.updated_at, true
 		  from reviews r join users u on u.id = r.reviewer_id
 		 where r.song_id = $1 and r.reviewer_id = $2`, songID, viewerID).
 		Scan(&v.ID, &v.SongID, &v.ReviewerID, &v.Reviewer, &v.Score, &v.Text,
 			&v.CreatedAt, &v.UpdatedAt, &v.Own)
-	if errors.Is(err, pgx.ErrNoRows) {
+	if errors.Is(err, sql.ErrNoRows) {
 		return nil, nil
 	}
 	return &v, err
@@ -105,8 +108,8 @@ func (a *app) createReview(w http.ResponseWriter, r *http.Request) {
 	// You cannot review your own song, and the unique constraint is what stops a second review —
 	// no read-then-write race to lose.
 	var submitter int64
-	err = a.pool.QueryRow(r.Context(), `select submitted_by from songs where id = $1`, songID).Scan(&submitter)
-	if errors.Is(err, pgx.ErrNoRows) {
+	err = a.db.QueryRowContext(r.Context(), `select submitted_by from songs where id = $1`, songID).Scan(&submitter)
+	if errors.Is(err, sql.ErrNoRows) {
 		http.NotFound(w, r)
 		return
 	} else if err != nil {
@@ -119,7 +122,7 @@ func (a *app) createReview(w http.ResponseWriter, r *http.Request) {
 		return
 	}

-	_, err = a.pool.Exec(r.Context(),
+	_, err = a.db.ExecContext(r.Context(),
 		`insert into reviews (song_id, reviewer_id, score, text) values ($1, $2, $3, $4)`,
 		songID, me.ID, score, text)
 	if isUnique(err) {
@@ -153,12 +156,12 @@ func (a *app) editReview(w http.ResponseWriter, r *http.Request) {
 	}

 	var songID int64
-	err = a.pool.QueryRow(r.Context(), `
-		update reviews set score = $3, text = $4, updated_at = now()
-		 where id = $1 and reviewer_id = $2 and updated_at > now() - $5::interval
+	err = a.db.QueryRowContext(r.Context(), `
+		update reviews set score = $3, text = $4, updated_at = datetime('now')
+		 where id = $1 and reviewer_id = $2 and updated_at > datetime('now', $5)
 		 returning song_id`,
-		id, memberFrom(r.Context()).ID, score, text, editWindow.String()).Scan(&songID)
-	if errors.Is(err, pgx.ErrNoRows) {
+		id, memberFrom(r.Context()).ID, score, text, editWindowAgo).Scan(&songID)
+	if errors.Is(err, sql.ErrNoRows) {
 		a.flash(w, "Muokkausaika on umpeutunut.")
 		http.Redirect(w, r, r.FormValue("from"), http.StatusSeeOther)
 		return
@@ -180,12 +183,12 @@ func (a *app) deleteReview(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	var songID int64
-	err = a.pool.QueryRow(r.Context(), `
+	err = a.db.QueryRowContext(r.Context(), `
 		delete from reviews
-		 where id = $1 and reviewer_id = $2 and updated_at > now() - $3::interval
+		 where id = $1 and reviewer_id = $2 and updated_at > datetime('now', $3)
 		 returning song_id`,
-		id, memberFrom(r.Context()).ID, editWindow.String()).Scan(&songID)
-	if errors.Is(err, pgx.ErrNoRows) {
+		id, memberFrom(r.Context()).ID, editWindowAgo).Scan(&songID)
+	if errors.Is(err, sql.ErrNoRows) {
 		a.flash(w, "Muokkausaika on umpeutunut.")
 		http.Redirect(w, r, r.FormValue("from"), http.StatusSeeOther)
 		return
@@ -2,6 +2,7 @@ package main

 import (
 	"context"
+	"database/sql"
 	"errors"
 	"fmt"
 	"log/slog"
@@ -9,8 +10,6 @@ import (
 	"os"
 	"strconv"
 	"time"
-
-	"github.com/jackc/pgx/v5"
 )

 const pageSize = 20
@@ -52,12 +51,12 @@ const songColumns = `
 	(select count(*) from reviews r where r.song_id = s.id),
 	case when s.submitted_by = $1
 	          or exists (select 1 from reviews r where r.song_id = s.id and r.reviewer_id = $1)
-	     then (select avg(r.score)::float from reviews r where r.song_id = s.id)
+	     then (select avg(r.score) from reviews r where r.song_id = s.id)
 	end,
 	s.submitted_by = $1,
 	exists (select 1 from reviews r where r.song_id = s.id and r.reviewer_id = $1)`

-func scanSongs(rows pgx.Rows) ([]*songSummary, error) {
+func scanSongs(rows *sql.Rows) ([]*songSummary, error) {
 	defer rows.Close()
 	var out []*songSummary
 	for rows.Next() {
@@ -74,7 +73,7 @@ func scanSongs(rows pgx.Rows) ([]*songSummary, error) {
 // The queue is a worklist: songs you can still review, oldest first, and never your own — you can
 // never act on those, so they would sit at the front forever.
 func (a *app) queue(ctx context.Context, viewerID, cursor int64) (*songList, error) {
-	rows, err := a.pool.Query(ctx, `select`+songColumns+`
+	rows, err := a.db.QueryContext(ctx, `select`+songColumns+`
 		  from songs s join users u on u.id = s.submitted_by
 		 where s.submitted_by <> $1
 		   and not exists (select 1 from reviews r where r.song_id = s.id and r.reviewer_id = $1)
@@ -93,7 +92,7 @@ func (a *app) queue(ctx context.Context, viewerID, cursor int64) (*songList, err

 // Everything, newest first. This is where a song lives once it has left the queue.
 func (a *app) browse(ctx context.Context, viewerID, cursor int64) (*songList, error) {
-	rows, err := a.pool.Query(ctx, `select`+songColumns+`
+	rows, err := a.db.QueryContext(ctx, `select`+songColumns+`
 		  from songs s join users u on u.id = s.submitted_by
 		 where ($2 = 0 or s.id < $2)
 		 order by s.created_at desc, s.id desc
@@ -166,7 +165,7 @@ func (s *songDetail) LyricLines() []lyricLine { return parseLRC(s.Lyrics) }

 func (a *app) song(ctx context.Context, viewerID, songID int64) (*songDetail, error) {
 	var d songDetail
-	err := a.pool.QueryRow(ctx, `select`+songColumns+`,
+	err := a.db.QueryRowContext(ctx, `select`+songColumns+`,
 		       coalesce(s.description, ''), coalesce(s.lyrics, ''), s.source_url
 		  from songs s join users u on u.id = s.submitted_by
 		 where s.id = $2`, viewerID, songID).
@@ -207,13 +206,13 @@ func (a *app) song(ctx context.Context, viewerID, songID int64) (*songDetail, er
 // draining the queue never means navigating back to it.
 func (a *app) nextInQueue(ctx context.Context, viewerID, exceptID int64) (int64, error) {
 	var id int64
-	err := a.pool.QueryRow(ctx, `
+	err := a.db.QueryRowContext(ctx, `
 		select s.id from songs s
 		 where s.submitted_by <> $1 and s.id <> $2
 		   and not exists (select 1 from reviews r where r.song_id = s.id and r.reviewer_id = $1)
 		 order by s.created_at, s.id
 		 limit 1`, viewerID, exceptID).Scan(&id)
-	if errors.Is(err, pgx.ErrNoRows) {
+	if errors.Is(err, sql.ErrNoRows) {
 		return 0, nil
 	}
 	return id, err
@@ -226,7 +225,7 @@ func (a *app) songPage(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	d, err := a.song(r.Context(), memberFrom(r.Context()).ID, id)
-	if errors.Is(err, pgx.ErrNoRows) {
+	if errors.Is(err, sql.ErrNoRows) {
 		http.NotFound(w, r)
 		return
 	} else if err != nil {
@@ -246,7 +245,7 @@ func (a *app) editLyrics(w http.ResponseWriter, r *http.Request) {
 		http.NotFound(w, r)
 		return
 	}
-	tag, err := a.pool.Exec(r.Context(),
+	res, err := a.db.ExecContext(r.Context(),
 		`update songs set lyrics = nullif($3, '') where id = $1 and submitted_by = $2`,
 		id, memberFrom(r.Context()).ID, cleanLyrics(r.FormValue("lyrics")))
 	if err != nil {
@@ -254,7 +253,7 @@ func (a *app) editLyrics(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "virhe", http.StatusInternalServerError)
 		return
 	}
-	if tag.RowsAffected() == 0 {
+	if affected(res) == 0 {
 		http.NotFound(w, r)
 		return
 	}
@@ -284,7 +283,7 @@ func (a *app) editSong(w http.ResponseWriter, r *http.Request) {
 		return
 	}

-	tag, err := a.pool.Exec(r.Context(), `
+	res, err := a.db.ExecContext(r.Context(), `
 		update songs set title = $3, artist = $4, genre = $5, description = nullif($6, '')
 		 where id = $1 and submitted_by = $2
 		   and not exists (select 1 from reviews r where r.song_id = songs.id)`,
@@ -295,7 +294,7 @@ func (a *app) editSong(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "virhe", http.StatusInternalServerError)
 		return
 	}
-	if tag.RowsAffected() == 0 {
+	if affected(res) == 0 {
 		a.flash(w, "Kappaletta ei voi enää muokata — sitä on jo arvosteltu.")
 	} else {
 		a.flash(w, "Tiedot tallennettu.")
@@ -310,7 +309,7 @@ func (a *app) deleteSong(w http.ResponseWriter, r *http.Request) {
 		http.NotFound(w, r)
 		return
 	}
-	tag, err := a.pool.Exec(r.Context(), `
+	res, err := a.db.ExecContext(r.Context(), `
 		delete from songs where id = $1 and submitted_by = $2
 		  and not exists (select 1 from reviews r where r.song_id = songs.id)`,
 		id, memberFrom(r.Context()).ID)
@@ -319,7 +318,7 @@ func (a *app) deleteSong(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "virhe", http.StatusInternalServerError)
 		return
 	}
-	if tag.RowsAffected() == 0 {
+	if affected(res) == 0 {
 		a.flash(w, "Kappaletta ei voi enää poistaa — sitä on jo arvosteltu.")
 		http.Redirect(w, r, fmt.Sprintf("/songs/%d", id), http.StatusSeeOther)
 		return
@@ -348,8 +347,8 @@ func (a *app) audio(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	var name string
-	err = a.pool.QueryRow(r.Context(), `select audio_file from songs where id = $1`, id).Scan(&name)
-	if errors.Is(err, pgx.ErrNoRows) {
+	err = a.db.QueryRowContext(r.Context(), `select audio_file from songs where id = $1`, id).Scan(&name)
+	if errors.Is(err, sql.ErrNoRows) {
 		http.NotFound(w, r)
 		return
 	} else if err != nil {
@@ -8,7 +8,7 @@ import (
 func (a *app) seedSong(t *testing.T, submitter int64, title string) int64 {
 	t.Helper()
 	var id int64
-	err := a.pool.QueryRow(context.Background(), `
+	err := a.db.QueryRowContext(context.Background(), `
 		insert into songs (title, artist, genre, audio_file, duration_seconds, submitted_by)
 		values ($1, 'Testiartisti', 'Metal', 'x.ogg', 120, $2) returning id`,
 		title, submitter).Scan(&id)
@@ -21,7 +21,7 @@ func (a *app) seedSong(t *testing.T, submitter int64, title string) int64 {
 func (a *app) seedReview(t *testing.T, songID, reviewerID int64, score int) int64 {
 	t.Helper()
 	var id int64
-	err := a.pool.QueryRow(context.Background(), `
+	err := a.db.QueryRowContext(context.Background(), `
 		insert into reviews (song_id, reviewer_id, score, text)
 		values ($1, $2, $3, 'sanat') returning id`, songID, reviewerID, score).Scan(&id)
 	if err != nil {
@@ -133,8 +133,8 @@ func TestQueueContents(t *testing.T) {

 	// Oldest first: a second unreviewed song comes after the first.
 	older := a.seedSong(t, bertta, "Vanhempi")
-	if _, err := a.pool.Exec(ctx,
-		`update songs set created_at = now() - interval '2 days' where id = $1`, older); err != nil {
+	if _, err := a.db.ExecContext(ctx,
+		`update songs set created_at = datetime('now', '-2 days') where id = $1`, older); err != nil {
 		t.Fatal(err)
 	}
 	list, err = a.queue(ctx, aino, 0)
@@ -165,7 +165,7 @@ func TestSongUnlocksWhenTheLastReviewGoes(t *testing.T) {
 		t.Fatal("a reviewed song is still editable")
 	}

-	if _, err := a.pool.Exec(ctx, `delete from reviews where id = $1`, reviewID); err != nil {
+	if _, err := a.db.ExecContext(ctx, `delete from reviews where id = $1`, reviewID); err != nil {
 		t.Fatal(err)
 	}
 	d, _ = a.song(ctx, aino, songID)
@@ -192,8 +192,8 @@ func TestEditWindow(t *testing.T) {
 	}

 	// Just inside the window.
-	if _, err := a.pool.Exec(ctx,
-		`update reviews set updated_at = now() - interval '29 minutes' where id = $1`,
+	if _, err := a.db.ExecContext(ctx,
+		`update reviews set updated_at = datetime('now', '-29 minutes') where id = $1`,
 		reviewID); err != nil {
 		t.Fatal(err)
 	}
@@ -203,8 +203,8 @@ func TestEditWindow(t *testing.T) {
 	}

 	// Past it.
-	if _, err := a.pool.Exec(ctx,
-		`update reviews set updated_at = now() - interval '31 minutes' where id = $1`,
+	if _, err := a.db.ExecContext(ctx,
+		`update reviews set updated_at = datetime('now', '-31 minutes') where id = $1`,
 		reviewID); err != nil {
 		t.Fatal(err)
 	}
@@ -215,17 +215,17 @@ func TestEditWindow(t *testing.T) {

 	// The database is the authority, not the Go clock: the update and the delete both refuse.
 	var n int64
-	err = a.pool.QueryRow(ctx, `
-		update reviews set score = 1, updated_at = now()
-		 where id = $1 and reviewer_id = $2 and updated_at > now() - $3::interval
-		 returning id`, reviewID, bertta, editWindow.String()).Scan(&n)
+	err = a.db.QueryRowContext(ctx, `
+		update reviews set score = 1, updated_at = datetime('now')
+		 where id = $1 and reviewer_id = $2 and updated_at > datetime('now', $3)
+		 returning id`, reviewID, bertta, editWindowAgo).Scan(&n)
 	if err == nil {
 		t.Fatal("an expired review was edited")
 	}
-	err = a.pool.QueryRow(ctx, `
+	err = a.db.QueryRowContext(ctx, `
 		delete from reviews
-		 where id = $1 and reviewer_id = $2 and updated_at > now() - $3::interval
-		 returning id`, reviewID, bertta, editWindow.String()).Scan(&n)
+		 where id = $1 and reviewer_id = $2 and updated_at > datetime('now', $3)
+		 returning id`, reviewID, bertta, editWindowAgo).Scan(&n)
 	if err == nil {
 		t.Fatal("an expired review was deleted")
 	}
@@ -743,6 +743,10 @@ td.break { word-break: break-all; font-size: 0.8rem; }
 code { background: var(--surface-raised); padding: 0.1rem var(--space-1);
       border-radius: var(--radius); font-size: 0.85rem; }

+/* The link is long and the button must stay reachable next to it on a narrow admin window. */
+.invitecell { display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap; }
+.invitecell code { word-break: break-all; }
+
 /* --- toasts --- */

 .toasts { position: fixed; right: var(--space-4); bottom: var(--space-4); z-index: 1000;
@@ -55,13 +55,18 @@ type stats struct {
 	MostProlific []userStat
 }

+// SQLite has no stddev aggregate. This is the population formula written out; max() absorbs the
+// tiny negative that floating-point cancellation produces when every score is identical, which
+// would otherwise make sqrt() return null and fail the scan.
+const stddevPop = `sqrt(max(0.0, avg(r.score * r.score) - avg(r.score) * avg(r.score)))`
+
 // Every leaderboard is ordered and limited in SQL, and every one carries a deterministic tie-break:
-// ties are common in a ten-person club, and without one Postgres may return a different ten each
-// time, so the page visibly reshuffles between reloads for no reason.
+// ties are common in a ten-person club, and without one the database may return a different ten
+// each time, so the page visibly reshuffles between reloads for no reason.
 func (a *app) songLeaderboard(ctx context.Context, valueExpr, direction string) ([]songStat, error) {
-	rows, err := a.pool.Query(ctx, `
-		select s.id, s.title, s.artist, `+valueExpr+`::float as value, count(r.id)::int as reviews,
-		       min(r.score)::int, max(r.score)::int
+	rows, err := a.db.QueryContext(ctx, `
+		select s.id, s.title, s.artist, cast(`+valueExpr+` as real) as value,
+		       count(r.id) as reviews, min(r.score), max(r.score)
 		  from songs s join reviews r on r.song_id = s.id
 		 group by s.id
 		having count(r.id) >= $1
@@ -86,8 +91,8 @@ func (a *app) songLeaderboard(ctx context.Context, valueExpr, direction string)
 // Reviewer boards need a minimum too, or one enthusiastic 100 makes someone the most generous
 // member in the club forever.
 func (a *app) reviewerLeaderboard(ctx context.Context, valueExpr, direction string) ([]userStat, error) {
-	rows, err := a.pool.Query(ctx, `
-		select u.id, u.name, u.avatar, `+valueExpr+`::float as value, count(r.id)::int as n
+	rows, err := a.db.QueryContext(ctx, `
+		select u.id, u.name, u.avatar, cast(`+valueExpr+` as real) as value, count(r.id) as n
 		  from users u join reviews r on r.reviewer_id = u.id
 		 group by u.id
 		having count(r.id) >= $1
@@ -109,8 +114,8 @@ func (a *app) reviewerLeaderboard(ctx context.Context, valueExpr, direction stri
 }

 func (a *app) mostProlific(ctx context.Context) ([]userStat, error) {
-	rows, err := a.pool.Query(ctx, `
-		select u.id, u.name, u.avatar, count(s.id)::float, count(s.id)::int
+	rows, err := a.db.QueryContext(ctx, `
+		select u.id, u.name, u.avatar, cast(count(s.id) as real), count(s.id)
 		  from users u join songs s on s.submitted_by = u.id
 		 group by u.id
 		 order by count(s.id) desc, u.id asc
@@ -140,11 +145,8 @@ func (a *app) statsPage(w http.ResponseWriter, r *http.Request) {
 	for _, load := range []func() error{
 		func() (err error) { s.TopSongs, err = a.songLeaderboard(ctx, "avg(r.score)", "desc"); return },
 		func() (err error) { s.BottomSongs, err = a.songLeaderboard(ctx, "avg(r.score)", "asc"); return },
-		func() (err error) {
-			s.MostDivisive, err = a.songLeaderboard(ctx, "stddev_pop(r.score)", "desc")
-			return
-		},
-		func() (err error) { s.MostUnified, err = a.songLeaderboard(ctx, "stddev_pop(r.score)", "asc"); return },
+		func() (err error) { s.MostDivisive, err = a.songLeaderboard(ctx, stddevPop, "desc"); return },
+		func() (err error) { s.MostUnified, err = a.songLeaderboard(ctx, stddevPop, "asc"); return },
 		func() (err error) { s.MostReviewed, err = a.songLeaderboard(ctx, "count(r.id)", "desc"); return },
 		func() (err error) { s.Harshest, err = a.reviewerLeaderboard(ctx, "avg(r.score)", "asc"); return },
 		func() (err error) { s.MostGenerous, err = a.reviewerLeaderboard(ctx, "avg(r.score)", "desc"); return },
@@ -51,7 +51,7 @@ func TestLeaderboardThresholdAndOrder(t *testing.T) {
 	}

 	// Identical scores everywhere means stddev 0, so unified beats divisive on the same data.
-	unified, err := a.songLeaderboard(ctx, "stddev_pop(r.score)", "asc")
+	unified, err := a.songLeaderboard(ctx, stddevPop, "asc")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -2,6 +2,7 @@ package main

 import (
 	"context"
+	"database/sql"
 	"errors"
 	"fmt"
 	"io"
@@ -12,8 +13,6 @@ import (
 	"strconv"
 	"strings"
 	"time"
-
-	"github.com/jackc/pgx/v5"
 )

 const (
@@ -147,12 +146,12 @@ func (a *app) submitError(w http.ResponseWriter, r *http.Request, status int, ms
 // from `submissions` is why this also looks at `songs`.
 func (a *app) overQuota(ctx context.Context, userID int64) (bool, error) {
 	var n int
-	err := a.pool.QueryRow(ctx, `
+	err := a.db.QueryRowContext(ctx, `
 		select (select count(*) from submissions
 		         where user_id = $1 and status <> 'failed'
-		           and created_at > now() - interval '24 hours')
+		           and created_at > datetime('now', '-24 hours'))
 		     + (select count(*) from songs
-		         where submitted_by = $1 and created_at > now() - interval '24 hours')`,
+		         where submitted_by = $1 and created_at > datetime('now', '-24 hours'))`,
 		userID).Scan(&n)
 	return n >= maxPerDay, err
 }
@@ -196,7 +195,7 @@ func (a *app) submit(w http.ResponseWriter, r *http.Request) {
 	defer file.Close()

 	var subID int64
-	err = a.pool.QueryRow(r.Context(),
+	err = a.db.QueryRowContext(r.Context(),
 		`insert into submissions (user_id, status) values ($1, 'queued') returning id`,
 		m.ID).Scan(&subID)
 	if err != nil {
@@ -236,7 +235,7 @@ func (a *app) submit(w http.ResponseWriter, r *http.Request) {
 		return
 	}

-	if _, err := a.pool.Exec(r.Context(),
+	if _, err := a.db.ExecContext(r.Context(),
 		`update submissions set tmp_path = $2, title = nullif($3, ''), artist = nullif($4, '')
 		  where id = $1`, subID, src, meta.Title, meta.Artist); err != nil {
 		slog.Error("save metadata", "ctx", "submissions", "error", err, "submission", subID)
@@ -268,7 +267,7 @@ func (a *app) submitURL(w http.ResponseWriter, r *http.Request, userID int64, ra
 	}

 	var subID int64
-	err = a.pool.QueryRow(r.Context(), `
+	err = a.db.QueryRowContext(r.Context(), `
 		insert into submissions (user_id, status, source_url, title, artist)
 		values ($1, 'queued', $2, nullif($3, ''), nullif($4, '')) returning id`,
 		userID, link, meta.Title, meta.Artist).Scan(&subID)
@@ -294,7 +293,7 @@ func (a *app) retry(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "ei uudelleenyritettävissä", http.StatusConflict)
 		return
 	}
-	if _, err := a.pool.Exec(r.Context(),
+	if _, err := a.db.ExecContext(r.Context(),
 		`update submissions set status = 'queued', status_msg = null where id = $1`, s.ID); err != nil {
 		slog.Error("retry", "ctx", "submissions", "error", err, "submission", s.ID)
 		http.Error(w, "virhe", http.StatusInternalServerError)
@@ -309,7 +308,7 @@ func (a *app) discardSubmission(ctx context.Context, subID int64, path string) {
 	if path != "" {
 		os.Remove(path)
 	}
-	if _, err := a.pool.Exec(ctx, `delete from submissions where id = $1`, subID); err != nil {
+	if _, err := a.db.ExecContext(ctx, `delete from submissions where id = $1`, subID); err != nil {
 		slog.Error("discard submission", "ctx", "submissions", "error", err, "submission", subID)
 	}
 }
@@ -348,7 +347,7 @@ func (a *app) process(subID int64, sourceURL, src string) {
 			a.setStatus(ctx, subID, "failed", "lataus ei tuottanut tiedostoa")
 			return
 		}
-		if _, err := a.pool.Exec(ctx,
+		if _, err := a.db.ExecContext(ctx,
 			`update submissions set tmp_path = $2 where id = $1`, subID, src); err != nil {
 			slog.Error("save tmp path", "ctx", "submissions", "error", err, "submission", subID)
 		}
@@ -370,7 +369,7 @@ func (a *app) process(subID int64, sourceURL, src string) {
 	// The original is discarded as soon as the Opus exists.
 	os.Remove(src)

-	if _, err := a.pool.Exec(ctx,
+	if _, err := a.db.ExecContext(ctx,
 		`update submissions set status = 'ready', status_msg = null, tmp_path = $2 where id = $1`,
 		subID, out); err != nil {
 		slog.Error("mark ready", "ctx", "submissions", "error", err, "submission", subID)
@@ -382,7 +381,7 @@ func (a *app) process(subID int64, sourceURL, src string) {
 	// so it covers well-tagged music; the Hae sanoitukset button on the waiting page is what
 	// covers everything else, once the submitter has fixed the title and artist.
 	var title, artist string
-	if err := a.pool.QueryRow(ctx,
+	if err := a.db.QueryRowContext(ctx,
 		`select coalesce(title, ''), coalesce(artist, '') from submissions where id = $1`,
 		subID).Scan(&title, &artist); err != nil {
 		return
@@ -395,7 +394,7 @@ func (a *app) process(subID int64, sourceURL, src string) {
 }

 func (a *app) setStatus(ctx context.Context, subID int64, status, msg string) {
-	if _, err := a.pool.Exec(ctx,
+	if _, err := a.db.ExecContext(ctx,
 		`update submissions set status = $2, status_msg = nullif($3, '') where id = $1`,
 		subID, status, msg); err != nil {
 		slog.Error("set status", "ctx", "submissions", "error", err, "submission", subID)
@@ -412,14 +411,14 @@ func (a *app) loadSubmission(w http.ResponseWriter, r *http.Request) *submission
 		return nil
 	}
 	var s submission
-	err = a.pool.QueryRow(r.Context(), `
+	err = a.db.QueryRowContext(r.Context(), `
 		select id, user_id, status, status_msg, source_url, coalesce(tmp_path, ''),
 		       coalesce(title, ''), coalesce(artist, ''), coalesce(genre, ''),
 		       coalesce(description, ''), coalesce(lyrics, ''), created_at
 		  from submissions where id = $1`, id).
 		Scan(&s.ID, &s.UserID, &s.Status, &s.StatusMsg, &s.SourceURL, &s.TmpPath,
 			&s.Title, &s.Artist, &s.Genre, &s.Description, &s.Lyrics, &s.CreatedAt)
-	if errors.Is(err, pgx.ErrNoRows) {
+	if errors.Is(err, sql.ErrNoRows) {
 		http.NotFound(w, r)
 		return nil
 	} else if err != nil {
@@ -473,7 +472,7 @@ func (a *app) saveMetadata(ctx context.Context, subID int64, r *http.Request) er
 	// worker had just fetched.
 	has := func(field string) bool { _, ok := r.Form[field]; return ok }

-	_, err := a.pool.Exec(ctx, `
+	_, err := a.db.ExecContext(ctx, `
 		update submissions set
 		       title       = case when $2 then nullif($3, '') else title end,
 		       artist      = case when $4 then nullif($5, '') else artist end,
@@ -557,16 +556,16 @@ func (a *app) publish(w http.ResponseWriter, r *http.Request) {
 		return
 	}

-	tx, err := a.pool.Begin(r.Context())
+	tx, err := a.db.BeginTx(r.Context(), nil)
 	if err != nil {
 		slog.Error("begin publish", "ctx", "submissions", "error", err)
 		http.Error(w, "virhe", http.StatusInternalServerError)
 		return
 	}
-	defer tx.Rollback(r.Context())
+	defer tx.Rollback()

 	var songID int64
-	err = tx.QueryRow(r.Context(), `
+	err = tx.QueryRowContext(r.Context(), `
 		insert into songs (title, artist, genre, description, lyrics, audio_file, duration_seconds,
 		                   source_url, submitted_by)
 		values ($1, $2, $3, $4, $5, '', $6, $7, $8) returning id`,
@@ -587,7 +586,7 @@ func (a *app) publish(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "virhe", http.StatusInternalServerError)
 		return
 	}
-	if _, err := tx.Exec(r.Context(),
+	if _, err := tx.ExecContext(r.Context(),
 		`update songs set audio_file = $2 where id = $1`,
 		songID, filepath.Base(dst)); err != nil {
 		os.Rename(dst, src)
@@ -595,13 +594,13 @@ func (a *app) publish(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "virhe", http.StatusInternalServerError)
 		return
 	}
-	if _, err := tx.Exec(r.Context(), `delete from submissions where id = $1`, s.ID); err != nil {
+	if _, err := tx.ExecContext(r.Context(), `delete from submissions where id = $1`, s.ID); err != nil {
 		os.Rename(dst, src)
 		slog.Error("delete submission", "ctx", "submissions", "error", err, "submission", s.ID)
 		http.Error(w, "virhe", http.StatusInternalServerError)
 		return
 	}
-	if err := tx.Commit(r.Context()); err != nil {
+	if err := tx.Commit(); err != nil {
 		os.Rename(dst, src)
 		slog.Error("commit publish", "ctx", "songs", "error", err, "submission", s.ID)
 		http.Error(w, "virhe", http.StatusInternalServerError)
@@ -635,7 +634,7 @@ func nilIfEmpty(s string) *string {

 // Own in-flight submissions, for the home page — otherwise a submission is only reachable by URL.
 func (a *app) mySubmissions(ctx context.Context, userID int64) ([]*submission, error) {
-	rows, err := a.pool.Query(ctx, `
+	rows, err := a.db.QueryContext(ctx, `
 		select id, user_id, status, status_msg, source_url, coalesce(tmp_path, ''),
 		       coalesce(title, ''), coalesce(artist, ''), coalesce(genre, ''),
 		       coalesce(description, ''), created_at
@@ -49,7 +49,7 @@ func makeAudio(t *testing.T, path string) {
 func (a *app) readySubmission(t *testing.T, userID int64) *submission {
 	t.Helper()
 	var id int64
-	err := a.pool.QueryRow(context.Background(), `
+	err := a.db.QueryRowContext(context.Background(), `
 		insert into submissions (user_id, status, title, artist, genre)
 		values ($1, 'ready', 'Testikappale', 'Testiartisti', 'Metal') returning id`,
 		userID).Scan(&id)
@@ -58,7 +58,7 @@ func (a *app) readySubmission(t *testing.T, userID int64) *submission {
 	}
 	path := a.tmpPath(id, ".ogg")
 	makeAudio(t, path)
-	if _, err := a.pool.Exec(context.Background(),
+	if _, err := a.db.ExecContext(context.Background(),
 		`update submissions set tmp_path = $2 where id = $1`, id, path); err != nil {
 		t.Fatal(err)
 	}
@@ -96,13 +96,13 @@ func TestPublishIsAllOrNothing(t *testing.T) {
 		t.Fatalf("publish with an unwritable audio dir: status = %d, want 500", w.Code)
 	}
 	var songs, submissions int
-	if err := a.pool.QueryRow(ctx, `select count(*) from songs`).Scan(&songs); err != nil {
+	if err := a.db.QueryRowContext(ctx, `select count(*) from songs`).Scan(&songs); err != nil {
 		t.Fatal(err)
 	}
 	if songs != 0 {
 		t.Fatalf("orphan song row: %d rows with no audio file", songs)
 	}
-	if err := a.pool.QueryRow(ctx, `select count(*) from submissions`).Scan(&submissions); err != nil {
+	if err := a.db.QueryRowContext(ctx, `select count(*) from submissions`).Scan(&submissions); err != nil {
 		t.Fatal(err)
 	}
 	if submissions != 1 {
@@ -120,13 +120,13 @@ func TestPublishIsAllOrNothing(t *testing.T) {
 		t.Fatalf("publish: status = %d, want 303", w.Code)
 	}
 	var songID int64
-	if err := a.pool.QueryRow(ctx, `select id from songs`).Scan(&songID); err != nil {
+	if err := a.db.QueryRowContext(ctx, `select id from songs`).Scan(&songID); err != nil {
 		t.Fatal(err)
 	}
 	if _, err := os.Stat(a.audioPath(songID)); err != nil {
 		t.Fatalf("published song has no audio file: %v", err)
 	}
-	if err := a.pool.QueryRow(ctx, `select count(*) from submissions`).Scan(&submissions); err != nil {
+	if err := a.db.QueryRowContext(ctx, `select count(*) from submissions`).Scan(&submissions); err != nil {
 		t.Fatal(err)
 	}
 	if submissions != 0 {
@@ -154,7 +154,7 @@ func TestSubmissionQuota(t *testing.T) {
 	check(false, "no submissions")

 	for range 4 {
-		if _, err := a.pool.Exec(ctx,
+		if _, err := a.db.ExecContext(ctx,
 			`insert into submissions (user_id, status) values ($1, 'ready')`, id); err != nil {
 			t.Fatal(err)
 		}
@@ -163,7 +163,7 @@ func TestSubmissionQuota(t *testing.T) {

 	// Failures never count — yt-dlp rot and bad files are not the submitter's fault.
 	for range 10 {
-		if _, err := a.pool.Exec(ctx,
+		if _, err := a.db.ExecContext(ctx,
 			`insert into submissions (user_id, status) values ($1, 'failed')`, id); err != nil {
 			t.Fatal(err)
 		}
@@ -171,7 +171,7 @@ func TestSubmissionQuota(t *testing.T) {
 	check(false, "failures do not count")

 	// A published song still occupies a slot, even though its submission row is gone.
-	if _, err := a.pool.Exec(ctx, `
+	if _, err := a.db.ExecContext(ctx, `
 		insert into songs (title, artist, genre, audio_file, duration_seconds, submitted_by)
 		values ('T', 'A', 'Metal', '1.ogg', 60, $1)`, id); err != nil {
 		t.Fatal(err)
@@ -179,8 +179,8 @@ func TestSubmissionQuota(t *testing.T) {
 	check(true, "four in flight plus one published")

 	// Yesterday's submissions are outside the window.
-	if _, err := a.pool.Exec(ctx,
-		`update submissions set created_at = now() - interval '25 hours' where user_id = $1`,
+	if _, err := a.db.ExecContext(ctx,
+		`update submissions set created_at = datetime('now', '-25 hours') where user_id = $1`,
 		id); err != nil {
 		t.Fatal(err)
 	}
@@ -194,17 +194,17 @@ func TestRestartRecovery(t *testing.T) {
 	id := a.seedMember(t, "[email protected]")

 	for _, status := range []string{"queued", "downloading", "converting"} {
-		if _, err := a.pool.Exec(ctx,
+		if _, err := a.db.ExecContext(ctx,
 			`insert into submissions (user_id, status) values ($1, $2)`, id, status); err != nil {
 			t.Fatal(err)
 		}
 	}
-	if err := sweep(ctx, a.pool); err != nil {
+	if err := sweep(ctx, a.db); err != nil {
 		t.Fatal(err)
 	}

 	var stuck int
-	if err := a.pool.QueryRow(ctx,
+	if err := a.db.QueryRowContext(ctx,
 		`select count(*) from submissions where status <> 'failed'`).Scan(&stuck); err != nil {
 		t.Fatal(err)
 	}
@@ -212,7 +212,7 @@ func TestRestartRecovery(t *testing.T) {
 		t.Fatalf("%d submissions survived the sweep still in flight", stuck)
 	}
 	var msg string
-	if err := a.pool.QueryRow(ctx,
+	if err := a.db.QueryRowContext(ctx,
 		`select status_msg from submissions limit 1`).Scan(&msg); err != nil {
 		t.Fatal(err)
 	}
@@ -13,8 +13,11 @@
    <tbody>
      {{range .Data.Invites}}
        <tr>
-          <td>
-            <a href="{{.Link}}">{{.Link}}</a>
+          <!-- Not a link: an invite is something to send, never to follow. A click used to open the
+               join form in the admin's own browser, which is never what was wanted. -->
+          <td class="invitecell">
+            <code>{{.Link}}</code>
+            <button type="button" class="ghost" onclick="copyInvite(this)">Kopioi</button>
          </td>
          <td class="nowrap"><span class="dot on"></span> käyttämätön</td>
          <td>{{fidate .CreatedAt}}</td>
@@ -87,4 +90,29 @@
  </div>
 </section>

+<script>
+  // The clipboard API needs a secure context. Over the documented SSH tunnel the origin is
+  // localhost, which qualifies; reached any other way it is missing, so selecting the text is the
+  // fallback — the admin presses Ctrl+C instead of being left with a button that does nothing.
+  function copyInvite(button) {
+    const link = button.previousElementSibling;
+    const done = () => {
+      button.textContent = 'Kopioitu';
+      setTimeout(() => { button.textContent = 'Kopioi'; }, 1500);
+    };
+    if (navigator.clipboard) {
+      navigator.clipboard.writeText(link.textContent).then(done, () => selectText(link));
+    } else {
+      selectText(link);
+    }
+  }
+
+  function selectText(el) {
+    const range = document.createRange();
+    range.selectNodeContents(el);
+    const sel = window.getSelection();
+    sel.removeAllRanges();
+    sel.addRange(range);
+  }
+</script>
 {{end}}
@@ -62,7 +62,7 @@
  <footer class="sitefooter">
    {{if .Member}}
      <!-- The server already knows where they were, so the path travels in the link — no JS. -->
-      <a href="/report?from={{.Path}}">Ilmoita ongelmasta</a> ·
+      <a href="/report?from={{.Path}}">Ongelmia? Ideoita? Palautetta?</a> ·
    {{end}}
    <span class="slogan">We know good music, baby!</span>
    <span class="copyright">© Kessinen</span>
@@ -1,13 +1,13 @@
 {{define "content"}}
 <h1>Palaute</h1>
-<p class="muted">Kerro mikä on rikki tai ärsyttää. Ei kategorioita eikä prioriteetteja — yksi
-  virke riittää.</p>
+<p class="muted">Ongelmat, ideat ja kaikki muu palaute samaan paikkaan. Ei kategorioita eikä
+  prioriteetteja — yksi virke riittää.</p>

 <form method="post" action="/report" class="stack">
  <input type="hidden" name="from" value="{{.Data.From}}">
  <label>Palaute
    <textarea name="body" rows="6" maxlength="2000" required autofocus
-              placeholder="Esim. soitin ei toimi puhelimella."></textarea>
+              placeholder="Esim. soittimeen kaipaisi kelausta."></textarea>
  </label>
  <button type="submit">Lähetä palaute</button>
 </form>
@@ -74,7 +74,8 @@
  {{with $s.Description}}<p class="intro">{{.}}</p>{{end}}
 {{end}}

-{{with $s.SourceURL}}<p class="muted small"><a href="{{.}}" rel="noreferrer">Kuuntele YouTubessa</a></p>{{end}}
+{{/* New tab: leaving the page mid-review would lose whatever is already typed in the form. */}}
+{{with $s.SourceURL}}<p class="muted small"><a href="{{.}}" target="_blank" rel="noreferrer">Kuuntele YouTubessa</a></p>{{end}}

 {{if and (not $s.CanReview) (or $s.Lyrics $s.Own)}}
 <!-- Only when the review strip is not already showing them: while reviewing, the lyrics live in
Author	SHA1	Message	Date
Esa Kataja	60660849c7	Make the invite copyable and widen what feedback invites Three fixes from using the admin panel and the site: - The invite link was an anchor, but an invite is something to send, not to follow — clicking it opened the join form in the admin's own browser. It is now the URL beside a Kopioi button. The handler reads the text out of the sibling element rather than interpolating the URL into JS, so there is nothing to escape, and where the clipboard API is missing (it needs a secure context, which the documented SSH tunnel to localhost provides) it selects the text instead of leaving a button that does nothing. - "Ilmoita ongelmasta" framed the feedback form as a bug tracker when it is meant to take ideas and general feedback too. The footer now asks "Ongelmia? Ideoita? Palautetta?", and the page it leads to answers all three: the ingress covers ideas explicitly and the placeholder suggests a feature rather than a fault. - "Kuuntele YouTubessa" opens in a new tab. Leaving the page mid-review would lose whatever is already typed into the review form.	2026-08-02 20:57:34 +03:00
Esa Kataja	1fe5211ae6	Replace Postgres with SQLite Ten members and a handful of songs a week never needed a database server, and the server was the last thing making this a two-container deployment. modernc.org/sqlite is pure Go, so CGO_ENABLED=0 survives and the dependency count is unchanged: pgx out, sqlite in. The port stayed small because the driver matches $1-style placeholders against argument ordinals exactly as pgx does, so no query needed rewriting for parameters. What did change: - timestamptz becomes timestamp holding UTC 'YYYY-MM-DD HH:MM:SS'. The declared type is what makes the driver return time.Time, and the fixed-width UTC string is what makes ordering and comparison against datetime('now') mean what they say. - interval has no equivalent: sessions.idle_ttl is seconds, and the review edit window travels as a SQLite date modifier string. - No stddev_pop, so the divisive and unified boards spell the population formula out, guarded with max(0.0, ...) because cancellation returns a tiny negative when every score is identical. - foreign_keys is off by default, so the cascades only exist because the pragma is set on every connection. Drops the postgres service, its healthcheck, the depends_on gate, the startup retry loop and POSTGRES_PASSWORD. ./storage is now the whole backup. Tests get a fresh database file per test and run everywhere instead of skipping without TEST_DATABASE_URL.	2026-08-02 20:47:41 +03:00
Esa Kataja	a9776c6dde	Follow the song in the lyrics Synced LRC highlights the playing line, keeps it centred and seeks on click. Plain text scrolls continuously with a nudge knob instead — a highlight on guessed timings turns guaranteed drift into what looks like a bug. Seuraa kappaletta turns following off without losing the highlight, and scrolling by hand turns it off too. Fixes the scroll landing in the wrong place (offsetTop measured from a different coordinate space than the box it was applied to) and the fader shifting the deck sideways at score 100 (auto-sized grid columns plus a readout spanning both).	2026-08-01 00:45:40 +03:00
Esa Kataja	4f337b6202	Add lyrics: paste, fetch, and read them while reviewing Lyrics are suggested at submission and never imposed. The conversion worker makes one LRCLIB lookup with whatever metadata exists, and the waiting page has a Hae sanoitukset button that re-queries with whatever title and artist are currently typed — which is the case that matters, since our metadata comes from ID3 tags and YouTube uploaders. Neither path overwrites typed text. - lyrics text on both submissions and songs, copied across at publish. Nothing has launched, so the column goes into 001_init.sql rather than a migration - The lock does not cover lyrics: it freezes what the song claims to be, and nobody reviewed the lyrics. So the submitter can still fix them afterwards, or paste them for an old song a year later - The review strip gained a second pane: lyrics on the left, review on the right, so following the words costs no scrolling. No lyrics means no pane, not an empty one. Below 1024px the panes stack - LRC timestamps are stored but stripped for reading — they belong to the player, not the reader - The lyrics box is capped and scrolls inside itself, so a long song cannot stretch the strip past the screen Fixes a real bug found on the way: saveMetadata cleared any field the request did not carry, so publishing wiped the lyrics the worker had just fetched. Fields absent from a request now keep their stored value. The client identifies itself to LRCLIB as "levyraati" and nothing more. Tests cover cleanLyrics keeping line breaks, and fetchLyrics against a local server: synced beats plain, instrumentals and wrong-length takes are skipped, and a miss is empty with no error.	2026-08-01 00:21:31 +03:00