Chickpea Picatta

1 teaspoon olive oil
1 scant cup thinly sliced shallots
6 cloves garlic, thinly sliced
2 tablespoons breadcrumbs
2 cups vegetable broth
1/3 cup dry white wine
A few dashes fresh black pepper
Generous pinch of dried thyme
1 16 oz can chickpeas, drained and rinsed
1/4 cup capers with a little brine
3 tablespoons fresh lemon juice
4 cups arugula