fix: journal:fix-headings runs from the application CLI

The command opens the database with lookupDB, as journal:image-variants
does: without a published database it opens database.dsn, and without
a DSN it names SUMMER_DATABASE__DSN.

console/fix_headings.go

@@ -2,7 +2,6 @@ package console
 
 import (
 	"context"
-	"errors"
 	"fmt"
 
 	"git.golem15.com/golem15/sm-journal-plugin/classes"
@@ -13,8 +12,10 @@ import (
 // FixHeadings is journal:fix-headings: it converts H1 to H2 in stored
 // Journal rich text (post content in every locale and category pillar text)
 // while the Journal H1 setting is on. It is a dry run unless --apply is
-// given; with the setting off it refuses with exit code 1. Its output (UI-SPEC
-// C27 with the P33-54 wording, English only):
+// given; with the setting off it refuses with exit code 1. It runs from the
+// generated application CLI: without a published database it opens
+// database.dsn (lookupDB) and, without one, names SUMMER_DATABASE__DSN. Its
+// output (UI-SPEC C27 with the P33-54 wording, English only):
 //
 //   - dry run: "Would convert :count H1 headings in :posts posts and :categories categories. Run with --apply to save."
 //   - applied: "Converted :count H1 headings in :posts posts and :categories categories."
@@ -47,10 +48,11 @@ journal_fix_headings runs the same conversion.`,
 			{Command: "journal:fix-headings --apply", Description: "Convert them and save"},
 		},
 		Run: func(ctx context.Context, in bonfire.Input, out bonfire.Output) error {
-			db := mustDB(app)
-			if db == nil {
-				return errors.New("journal: database is not configured")
+			db, done, err := lookupDB(ctx, app)
+			if err != nil {
+				return err
 			}
+			defer done()
 			if !classes.EffectiveH1ToH2(ctx, db, appConfig(app)) {
 				out.Error(classes.H1ConversionOffText)
 				return bonfire.Reported(classes.ErrH1ConversionOff)