feat: index the text of attached PDFs

- jz_bm_material_file_texts caches the pdftotext output per file
- the River job jz.bm.extract_material_text extracts and resyncs
- the management multipart attach queues it inside its transaction
- file_texts in the document and a file snippet with its name

plugin.go

@@ -5,9 +5,11 @@ import (
 	"embed"
 	"errors"
 	"io/fs"
+	"time"
 
 	"git.golem15.com/golem15/summercms/modules/backpack"
 	"git.golem15.com/golem15/summercms/modules/bonfire"
+	"git.golem15.com/golem15/summercms/modules/conga"
 	"git.golem15.com/golem15/summercms/modules/lagoon"
 	"git.golem15.com/golem15/summercms/modules/lighthouse"
 	"git.golem15.com/golem15/summercms/modules/lighthouse/centrifugo"
@@ -108,7 +110,15 @@ func (p *Plugin) MailLayouts() map[string]string { return nil }
 
 func (p *Plugin) Models() []any                       { return generatedModels() }
 func (p *Plugin) Migrations() []*gormigrate.Migration { return generatedMigrations() }
-func (p *Plugin) Jobs() []pact.Job                    { return generatedJobs() }
+
+// Jobs returns the generated jobs and jz.bm.extract_material_text, which
+// extracts the text of attached PDFs for search: three attempts, two
+// minutes each.
+func (p *Plugin) Jobs() []pact.Job {
+	timeout := conga.Timeout(2 * time.Minute)
+	return append(generatedJobs(), conga.Job(p.extractMaterialText, conga.MaxAttempts(3), timeout))
+}
+
 func (p *Plugin) AdminControllers() []pact.AdminController {
 	return generatedAdminControllers()
 }