feat(03-01): add shared postgres pool and plugin migrations

Open one pgx stdlib *sql.DB, hand it to GORM, and run per-plugin
gormigrate sets with isolated history tables after an ICU pl-PL check.

Co-authored-by: Cursor <cursoragent@cursor.com>

lagoon/migrations_test.go

@@ -0,0 +1,97 @@
+package lagoon
+
+import (
+	"bytes"
+	"io"
+	"os"
+	"strings"
+	"testing"
+
+	"git.golem15.com/golem15/summercms/bonfire"
+)
+
+func TestHistoryTableName(t *testing.T) {
+	got, err := HistoryTableName("golem15.user")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got != "summer_migrations_golem15_user" {
+		t.Fatalf("got %q", got)
+	}
+	got, err = HistoryTableName("golem15.fonoteka")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got != "summer_migrations_golem15_fonoteka" {
+		t.Fatalf("got %q", got)
+	}
+	if _, err := HistoryTableName("golem15.user;drop"); err == nil {
+		t.Fatal("want invalid plugin id error")
+	}
+	if _, err := HistoryTableName(""); err == nil {
+		t.Fatal("want empty plugin id error")
+	}
+}
+
+func TestCheckLocaleMessage(t *testing.T) {
+	if err := checkLocale("i", "pl-PL"); err != nil {
+		t.Fatal(err)
+	}
+	err := checkLocale("c", "en_US")
+	if err == nil {
+		t.Fatal("want locale error")
+	}
+	msg := err.Error()
+	for _, want := range []string{"ICU", "pl-PL", "CREATE DATABASE", "LOCALE_PROVIDER icu", "en_US"} {
+		if !strings.Contains(msg, want) {
+			t.Fatalf("missing %q in %s", want, msg)
+		}
+	}
+}
+
+func TestRuntimeCommandsRegisterBareAndColonNames(t *testing.T) {
+	cmds := RuntimeCommands(nil, nil)
+	names := map[string]bool{}
+	for _, c := range cmds {
+		names[c.Name] = true
+	}
+	for _, want := range []string{"migrate", "migrate:rollback", "migrate:status"} {
+		if !names[want] {
+			t.Fatalf("missing %s", want)
+		}
+	}
+	root, err := bonfire.NewRoot("app", cmds, io.Discard)
+	if err != nil {
+		t.Fatal(err)
+	}
+	root.SetArgs([]string{"migrate", "--help"})
+	if err := root.Execute(); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestNoAutoMigrate(t *testing.T) {
+	entries, err := os.ReadDir(".")
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, entry := range entries {
+		if entry.IsDir() || !strings.HasSuffix(entry.Name(), ".go") || strings.HasSuffix(entry.Name(), "_test.go") {
+			continue
+		}
+		body, err := os.ReadFile(entry.Name())
+		if err != nil {
+			t.Fatal(err)
+		}
+		if bytes.Contains(body, []byte("AutoMigrate")) {
+			t.Fatalf("%s must not call AutoMigrate", entry.Name())
+		}
+	}
+}
+
+func TestOpenRequiresDSN(t *testing.T) {
+	_, _, err := Open(t.Context(), "  ")
+	if err == nil || !strings.Contains(err.Error(), "database.dsn") {
+		t.Fatalf("got %v", err)
+	}
+}