feat: extract file text on every attach path and backfill on reindex

- inline and signed uploads queue the text job in their transaction
- the admin form queues it in the save transaction
- detach resyncs the material (its text row goes by cascade)
- bm:materials-reindex backfills missing PDF texts before each sync

console/export_test.go

@@ -0,0 +1,24 @@
+package console
+
+import (
+	"context"
+
+	"git.golem15.com/golem15/summercms/modules/bonfire"
+	"gorm.io/gorm"
+)
+
+// ReindexRun exposes one reindex walk to the console_test package.
+type ReindexRun struct{ r *reindexRun }
+
+// NewReindexRun is a walk with deps' Backfill and the given sync.
+func NewReindexRun(deps MaterialsReindexDeps, sync func(id uint) error, out bonfire.Output) ReindexRun {
+	return ReindexRun{r: &reindexRun{backfill: deps.Backfill, sync: sync, out: out}}
+}
+
+// Material runs the per-material step.
+func (w ReindexRun) Material(ctx context.Context, db *gorm.DB, id uint) { w.r.material(ctx, db, id) }
+
+// Counts are the run's counters and the tool-missing flag.
+func (w ReindexRun) Counts() (synced, failed int, noTool bool) {
+	return w.r.synced, w.r.failed, w.r.noTool
+}