fix: register components/pure and disable broken trigger factory

Import github.com/warpstreamlabs/bento/v4/public/components/pure in the
production binary so that bloblang/mapping processor types are registered
at runtime (previously only imported in test files via testmain_test.go).

Disable TriggerTypes() returning "bento" because the external plugin
adapter's TriggerFactories() method calls CreateModule instead of a
non-existent CreateTrigger RPC, causing a nil trigger registration failure
that prevents step.bento from loading. Triggers can be re-enabled once
the host adapter implements the CreateTrigger RPC.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: intel352

cmd/workflow-plugin-bento/main.go

@@ -6,6 +6,10 @@ package main
 import (
 	"github.com/GoCodeAlone/workflow-plugin-bento/internal"
 	sdk "github.com/GoCodeAlone/workflow/plugin/external/sdk"
+
+	// Register pure Bento components (mapping/bloblang processors, generate input, etc.)
+	// so that step.bento can execute Bloblang transforms at runtime.
+	_ "github.com/warpstreamlabs/bento/v4/public/components/pure"
 )
 
 func main() {

internal/plugin.go

@@ -62,8 +62,12 @@ func (p *bentoPlugin) CreateStep(typeName, name string, config map[string]any) (
 }
 
 // TriggerTypes returns the trigger type names this plugin provides.
+// Note: trigger support via the external plugin gRPC bridge is not yet fully
+// implemented in the host adapter (CreateTrigger RPC is missing). Returning an
+// empty list avoids a registration failure that would prevent step.bento from
+// loading. Triggers can be re-enabled once the host adapter supports them.
 func (p *bentoPlugin) TriggerTypes() []string {
-	return []string{"bento"}
+	return []string{}
 }
 
 // CreateTrigger creates a trigger instance of the given type.