feat(shellconfig): implement PlanForce

internal/modules/shellconfig/shellconfig.go

@@ -3,7 +3,6 @@ package shellconfig
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -91,5 +90,20 @@ func (m Module) Verify(ctx context.Context) error {
 }
 
 func (m Module) PlanForce(ctx context.Context) (module.Plan, error) {
-	return module.Plan{}, errors.New("PlanForce not implemented")
+	var actions []module.Action
+	for _, b := range m.cfg.Blocks {
+		b := b
+		actions = append(actions, module.Action{
+			Description: fmt.Sprintf("rewrite block %s into %s (force)", b.Name, b.File),
+			Kind:        module.ActionFileWrite,
+			Exec: func(ctx context.Context) error {
+				p, err := resolveFile(b.File)
+				if err != nil {
+					return err
+				}
+				return platform.EnsureBlock(p, b.Name, b.Content)
+			},
+		})
+	}
+	return module.Plan{Actions: actions}, nil
 }