feat(KB-503): add multi-project CLI support with project subcommands

- Add project subcommands: list, add, remove, show, set-default, detect
- Add --project flag support for all task commands
- Create project-context.ts utilities for project resolution
- Add defaultProjectId to GlobalSettings type
- Implement project auto-detection from cwd
- Update CLI argument parsing for global --project flag
- Add multi-project CLI documentation to AGENTS.md

packages/dashboard/app/components/__tests__/InlineCreateCard.test.tsx

@@ -300,12 +300,12 @@ describe("InlineCreateCard model selector", () => {
       autoSelectModelPreset: false,
       defaultPresetBySize: {},
     });
-    const { props } = renderCard();
+    const { props } = renderCard([], { availableModels: undefined });
     const textarea = screen.getByPlaceholderText("What needs to be done?");
 
     fireEvent.change(textarea, { target: { value: "Task with preset" } });
     fireEvent.click(screen.getByRole("button", { name: /Preset/i }));
-    fireEvent.click(screen.getByRole("button", { name: "Budget" }));
+    fireEvent.click(await screen.findByRole("button", { name: "Budget" }));
     fireEvent.click(screen.getByRole("button", { name: /Save/i }));
 
     await waitFor(() => {