Release 2026.08.02-1

SQLite replaces Postgres, and two fixes from using the thing.

- The database is a file under ./storage instead of a second container. Ten
  members never needed a database server, and the driver is pure Go, so the
  build stays CGO_ENABLED=0 and the dependency count is unchanged. One bind
  mount is now the whole backup: no pgdata, no healthcheck-gated depends_on,
  no startup retry loop. Timestamps are UTC text, idle_ttl is seconds, the
  divisive/unified boards carry their own stddev, and foreign keys are on by
  pragma. Tests get a database file each and run without any setup
- Invites are copied, not clicked. An invite is something to send, and the
  anchor opened the join form in the admin's own browser
- Feedback asks for more than faults: the footer reads "Ongelmia? Ideoita?
  Palautetta?" and the page behind it invites ideas rather than only bugs
- Kuuntele YouTubessa opens in a new tab, so a half-typed review survives it

main_test.go

@@ -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 {