diff --git a/canvas/src/components/tabs/FilesTab/__tests__/FilesToolbar.test.tsx b/canvas/src/components/tabs/FilesTab/__tests__/FilesToolbar.test.tsx
deleted file mode 100644
index cb23c95d..00000000
--- a/canvas/src/components/tabs/FilesTab/__tests__/FilesToolbar.test.tsx
+++ /dev/null
@@ -1,349 +0,0 @@
-// @vitest-environment jsdom
-/**
- * Tests for FilesToolbar — the top-of-panel bar for the Files tab.
- * Covers: directory select, file count, New/Upload/Clear (configs-only),
- * Export, Refresh, and aria-labels.
- */
-import React from "react";
-import { render, screen, fireEvent, cleanup } from "@testing-library/react";
-import { afterEach, describe, expect, it, vi } from "vitest";
-import { FilesToolbar } from "../FilesToolbar";
-
-afterEach(cleanup);
-
-describe("FilesToolbar", () => {
-  describe("renders base toolbar", () => {
-    it("renders the directory select with aria-label", () => {
-      render(
-        <FilesToolbar
-          root="/configs"
-          setRoot={vi.fn()}
-          fileCount={3}
-          onNewFile={vi.fn()}
-          onUpload={vi.fn()}
-          onDownloadAll={vi.fn()}
-          onClearAll={vi.fn()}
-          onRefresh={vi.fn()}
-        />
-      );
-      expect(
-        screen.getByRole("combobox", { name: /file root directory/i })
-      ).toBeTruthy();
-    });
-
-    it("renders the file count", () => {
-      render(
-        <FilesToolbar
-          root="/configs"
-          setRoot={vi.fn()}
-          fileCount={7}
-          onNewFile={vi.fn()}
-          onUpload={vi.fn()}
-          onDownloadAll={vi.fn()}
-          onClearAll={vi.fn()}
-          onRefresh={vi.fn()}
-        />
-      );
-      expect(screen.getByText("7 files")).toBeTruthy();
-    });
-
-    it("renders Export button", () => {
-      render(
-        <FilesToolbar
-          root="/configs"
-          setRoot={vi.fn()}
-          fileCount={0}
-          onNewFile={vi.fn()}
-          onUpload={vi.fn()}
-          onDownloadAll={vi.fn()}
-          onClearAll={vi.fn()}
-          onRefresh={vi.fn()}
-        />
-      );
-      expect(
-        screen.getByRole("button", { name: /download all files/i })
-      ).toBeTruthy();
-    });
-
-    it("renders Refresh button", () => {
-      render(
-        <FilesToolbar
-          root="/configs"
-          setRoot={vi.fn()}
-          fileCount={0}
-          onNewFile={vi.fn()}
-          onUpload={vi.fn()}
-          onDownloadAll={vi.fn()}
-          onClearAll={vi.fn()}
-          onRefresh={vi.fn()}
-        />
-      );
-      expect(screen.getByRole("button", { name: /refresh file list/i })).toBeTruthy();
-    });
-
-    it("renders 0 files when count is 0", () => {
-      render(
-        <FilesToolbar
-          root="/configs"
-          setRoot={vi.fn()}
-          fileCount={0}
-          onNewFile={vi.fn()}
-          onUpload={vi.fn()}
-          onDownloadAll={vi.fn()}
-          onClearAll={vi.fn()}
-          onRefresh={vi.fn()}
-        />
-      );
-      expect(screen.getByText("0 files")).toBeTruthy();
-    });
-  });
-
-  describe("configs-only buttons", () => {
-    it("shows New and Upload buttons when root is /configs", () => {
-      render(
-        <FilesToolbar
-          root="/configs"
-          setRoot={vi.fn()}
-          fileCount={3}
-          onNewFile={vi.fn()}
-          onUpload={vi.fn()}
-          onDownloadAll={vi.fn()}
-          onClearAll={vi.fn()}
-          onRefresh={vi.fn()}
-        />
-      );
-      expect(
-        screen.getByRole("button", { name: /create new file/i })
-      ).toBeTruthy();
-      expect(
-        screen.getByRole("button", { name: /upload folder/i })
-      ).toBeTruthy();
-      expect(screen.getByRole("button", { name: /delete all files/i })).toBeTruthy();
-    });
-
-    it("hides New and Upload when root is /workspace", () => {
-      render(
-        <FilesToolbar
-          root="/workspace"
-          setRoot={vi.fn()}
-          fileCount={5}
-          onNewFile={vi.fn()}
-          onUpload={vi.fn()}
-          onDownloadAll={vi.fn()}
-          onClearAll={vi.fn()}
-          onRefresh={vi.fn()}
-        />
-      );
-      expect(
-        screen.queryByRole("button", { name: /create new file/i })
-      ).toBeNull();
-      expect(
-        screen.queryByRole("button", { name: /upload folder/i })
-      ).toBeNull();
-      expect(
-        screen.queryByRole("button", { name: /delete all files/i })
-      ).toBeNull();
-      // Export and Refresh are still present
-      expect(
-        screen.getByRole("button", { name: /download all files/i })
-      ).toBeTruthy();
-    });
-
-    it("hides New and Upload when root is /home", () => {
-      render(
-        <FilesToolbar
-          root="/home"
-          setRoot={vi.fn()}
-          fileCount={2}
-          onNewFile={vi.fn()}
-          onUpload={vi.fn()}
-          onDownloadAll={vi.fn()}
-          onClearAll={vi.fn()}
-          onRefresh={vi.fn()}
-        />
-      );
-      expect(
-        screen.queryByRole("button", { name: /create new file/i })
-      ).toBeNull();
-      expect(
-        screen.queryByRole("button", { name: /upload folder/i })
-      ).toBeNull();
-    });
-
-    it("hides New and Upload when root is /plugins", () => {
-      render(
-        <FilesToolbar
-          root="/plugins"
-          setRoot={vi.fn()}
-          fileCount={1}
-          onNewFile={vi.fn()}
-          onUpload={vi.fn()}
-          onDownloadAll={vi.fn()}
-          onClearAll={vi.fn()}
-          onRefresh={vi.fn()}
-        />
-      );
-      expect(
-        screen.queryByRole("button", { name: /create new file/i })
-      ).toBeNull();
-      expect(
-        screen.queryByRole("button", { name: /upload folder/i })
-      ).toBeNull();
-    });
-  });
-
-  describe("callbacks", () => {
-    it("calls setRoot when directory is changed", () => {
-      const setRoot = vi.fn();
-      render(
-        <FilesToolbar
-          root="/configs"
-          setRoot={setRoot}
-          fileCount={3}
-          onNewFile={vi.fn()}
-          onUpload={vi.fn()}
-          onDownloadAll={vi.fn()}
-          onClearAll={vi.fn()}
-          onRefresh={vi.fn()}
-        />
-      );
-      fireEvent.change(screen.getByRole("combobox"), {
-        target: { value: "/workspace" },
-      });
-      expect(setRoot).toHaveBeenCalledWith("/workspace");
-    });
-
-    it("calls onNewFile when New button is clicked", () => {
-      const onNewFile = vi.fn();
-      render(
-        <FilesToolbar
-          root="/configs"
-          setRoot={vi.fn()}
-          fileCount={3}
-          onNewFile={onNewFile}
-          onUpload={vi.fn()}
-          onDownloadAll={vi.fn()}
-          onClearAll={vi.fn()}
-          onRefresh={vi.fn()}
-        />
-      );
-      fireEvent.click(screen.getByRole("button", { name: /create new file/i }));
-      expect(onNewFile).toHaveBeenCalledTimes(1);
-    });
-
-    it("calls onDownloadAll when Export button is clicked", () => {
-      const onDownloadAll = vi.fn();
-      render(
-        <FilesToolbar
-          root="/workspace"
-          setRoot={vi.fn()}
-          fileCount={5}
-          onNewFile={vi.fn()}
-          onUpload={vi.fn()}
-          onDownloadAll={onDownloadAll}
-          onClearAll={vi.fn()}
-          onRefresh={vi.fn()}
-        />
-      );
-      fireEvent.click(screen.getByRole("button", { name: /download all files/i }));
-      expect(onDownloadAll).toHaveBeenCalledTimes(1);
-    });
-
-    it("calls onClearAll when Clear button is clicked", () => {
-      const onClearAll = vi.fn();
-      render(
-        <FilesToolbar
-          root="/configs"
-          setRoot={vi.fn()}
-          fileCount={3}
-          onNewFile={vi.fn()}
-          onUpload={vi.fn()}
-          onDownloadAll={vi.fn()}
-          onClearAll={onClearAll}
-          onRefresh={vi.fn()}
-        />
-      );
-      fireEvent.click(screen.getByRole("button", { name: /delete all files/i }));
-      expect(onClearAll).toHaveBeenCalledTimes(1);
-    });
-
-    it("calls onRefresh when Refresh button is clicked", () => {
-      const onRefresh = vi.fn();
-      render(
-        <FilesToolbar
-          root="/configs"
-          setRoot={vi.fn()}
-          fileCount={3}
-          onNewFile={vi.fn()}
-          onUpload={vi.fn()}
-          onDownloadAll={vi.fn()}
-          onClearAll={vi.fn()}
-          onRefresh={onRefresh}
-        />
-      );
-      fireEvent.click(screen.getByRole("button", { name: /refresh file list/i }));
-      expect(onRefresh).toHaveBeenCalledTimes(1);
-    });
-
-    it("calls onUpload when the hidden file input changes", () => {
-      const onUpload = vi.fn();
-      render(
-        <FilesToolbar
-          root="/configs"
-          setRoot={vi.fn()}
-          fileCount={3}
-          onNewFile={vi.fn()}
-          onUpload={onUpload}
-          onDownloadAll={vi.fn()}
-          onClearAll={vi.fn()}
-          onRefresh={vi.fn()}
-        />
-      );
-      // Find the hidden file input
-      const fileInput = document.querySelector(
-        'input[type="file"]'
-      ) as HTMLInputElement;
-      expect(fileInput).toBeTruthy();
-      expect(fileInput?.getAttribute("aria-label")).toBe("Upload folder files");
-    });
-  });
-
-  describe("a11y", () => {
-    it("all buttons have aria-label or accessible name", () => {
-      render(
-        <FilesToolbar
-          root="/configs"
-          setRoot={vi.fn()}
-          fileCount={3}
-          onNewFile={vi.fn()}
-          onUpload={vi.fn()}
-          onDownloadAll={vi.fn()}
-          onClearAll={vi.fn()}
-          onRefresh={vi.fn()}
-        />
-      );
-      // All buttons should be findable by role
-      const buttons = screen.getAllByRole("button");
-      for (const btn of buttons) {
-        expect(btn.getAttribute("aria-label") ?? btn.textContent).toBeTruthy();
-      }
-    });
-
-    it("directory select has aria-label", () => {
-      render(
-        <FilesToolbar
-          root="/configs"
-          setRoot={vi.fn()}
-          fileCount={3}
-          onNewFile={vi.fn()}
-          onUpload={vi.fn()}
-          onDownloadAll={vi.fn()}
-          onClearAll={vi.fn()}
-          onRefresh={vi.fn()}
-        />
-      );
-      const select = screen.getByRole("combobox");
-      expect(select.getAttribute("aria-label")).toBe("File root directory");
-    });
-  });
-});
diff --git a/canvas/src/components/tabs/FilesTab/__tests__/NotAvailablePanel.test.tsx b/canvas/src/components/tabs/FilesTab/__tests__/NotAvailablePanel.test.tsx
deleted file mode 100644
index c670bb50..00000000
--- a/canvas/src/components/tabs/FilesTab/__tests__/NotAvailablePanel.test.tsx
+++ /dev/null
@@ -1,101 +0,0 @@
-// @vitest-environment jsdom
-/**
- * Tests for NotAvailablePanel — the full-tab placeholder shown when a
- * workspace's runtime doesn't own a platform-managed filesystem (today:
- * runtime === "external"). Covers rendering, a11y, and runtime prop
- * display.
- */
-import React from "react";
-import { render, screen, cleanup } from "@testing-library/react";
-import { afterEach, describe, expect, it } from "vitest";
-import { NotAvailablePanel } from "../NotAvailablePanel";
-
-afterEach(cleanup);
-
-describe("NotAvailablePanel", () => {
-  describe("renders", () => {
-    it("renders the heading", () => {
-      render(<NotAvailablePanel runtime="external" />);
-      expect(screen.getByText("Files not available")).toBeTruthy();
-    });
-
-    it("renders the description text", () => {
-      render(<NotAvailablePanel runtime="external" />);
-      expect(
-        screen.getByText(/whose filesystem isn't owned by the platform/i)
-      ).toBeTruthy();
-    });
-
-    it("displays the runtime name in the description", () => {
-      render(<NotAvailablePanel runtime="aws-lambda" />);
-      // The runtime name appears inside the paragraph
-      const para = screen.getByText(/whose filesystem isn't owned/i);
-      expect(para.textContent).toContain("aws-lambda");
-    });
-
-    it("renders the SVG folder icon with aria-hidden", () => {
-      render(<NotAvailablePanel runtime="external" />);
-      const svg = document.querySelector("svg");
-      expect(svg).toBeTruthy();
-      expect(svg?.getAttribute("aria-hidden")).toBe("true");
-    });
-
-    it("uses the provided runtime prop verbatim", () => {
-      render(<NotAvailablePanel runtime="cloud-run" />);
-      const monoRuntime = document.querySelector(".font-mono");
-      expect(monoRuntime?.textContent).toBe("cloud-run");
-    });
-
-    it("renders the 'Use the Chat tab' guidance text", () => {
-      render(<NotAvailablePanel runtime="external" />);
-      expect(screen.getByText(/Use the Chat tab/i)).toBeTruthy();
-    });
-
-    it("is contained in a full-height flex column", () => {
-      render(<NotAvailablePanel runtime="external" />);
-      const container = screen.getByText("Files not available").closest("div");
-      expect(container?.className).toContain("flex");
-      expect(container?.className).toContain("flex-col");
-      expect(container?.className).toContain("items-center");
-      expect(container?.className).toContain("justify-center");
-      expect(container?.className).toContain("h-full");
-    });
-  });
-
-  describe("a11y", () => {
-    it("heading is an h3", () => {
-      render(<NotAvailablePanel runtime="external" />);
-      expect(screen.getByRole("heading", { level: 3 })).toBeTruthy();
-    });
-
-    it("SVG icon has aria-hidden so screen readers skip it", () => {
-      render(<NotAvailablePanel runtime="external" />);
-      const svg = document.querySelector("svg");
-      expect(svg?.getAttribute("aria-hidden")).toBe("true");
-    });
-
-    it("description paragraph is present with descriptive text", () => {
-      render(<NotAvailablePanel runtime="external" />);
-      const paras = document.querySelectorAll("p");
-      expect(paras.length).toBeGreaterThan(0);
-      const text = Array.from(paras)
-        .map((p) => p.textContent)
-        .join(" ");
-      expect(text.toLowerCase()).toContain("runtime");
-    });
-  });
-
-  describe("props", () => {
-    it("renders with a short runtime name", () => {
-      render(<NotAvailablePanel runtime="ext" />);
-      const monoRuntime = document.querySelector(".font-mono");
-      expect(monoRuntime?.textContent).toBe("ext");
-    });
-
-    it("renders with a complex runtime name", () => {
-      render(<NotAvailablePanel runtime="gcp-cloud-functions-v2" />);
-      const monoRuntime = document.querySelector(".font-mono");
-      expect(monoRuntime?.textContent).toBe("gcp-cloud-functions-v2");
-    });
-  });
-});