test: massive test coverage expansion (+1,437 tests, 22 new files)

Expand test coverage across all layers via 14 parallel agents:

Unit tests (3,378 total, +534):
- First-ever AI sidecar tests (157 tests covering bridge lifecycle, all 12 tool modules)
- API route infrastructure (auth, pipeline, batch, settings, teams, roles, audit, api-keys, files, docs)
- Lib coverage improvements (audit 7%->95%, worker-pool 33%->100%)
- Web store/lib gap fills (features-store, tool-registry)

Integration tests (4,403 total, +903):
- Expanded 19 tool test files with parameter variations, format edge cases, boundary values
- Cross-format matrix: 290 tests covering 14 tools x 17 formats
- Adversarial/edge cases: 63 tests for extreme inputs, concurrent requests, corrupted files

E2E-Docker (125 new tests):
- Expanded 8 spec files + 1 new file covering all 49 tools
- Added HEIC/format handling, auth failures, download verification

GUI E2E (expanded 28 spec files):
- Navigation, responsive layout, keyboard shortcuts
- All 51 tool UIs with settings, processing, display modes
- Batch/pipeline workflows, settings/RBAC, visual regression
- Resilience, accessibility (ARIA, contrast, focus), performance budgets

tests/e2e/gui-tools-color.spec.ts

@@ -94,6 +94,25 @@ test.describe("GUI Color & Adjustment Tools", () => {
       await expect(page.getByRole("button", { name: "Reset All" })).toBeVisible();
     });
 
+    test("selecting grayscale effect enables submit", async ({ loggedInPage: page }) => {
+      await page.goto("/adjust-colors");
+      await uploadTestImage(page);
+
+      const submitBtn = page.getByTestId("adjust-colors-submit");
+      await expect(submitBtn).toBeDisabled();
+
+      await page.getByRole("button", { name: "grayscale" }).click();
+      await expect(submitBtn).toBeEnabled();
+    });
+
+    test("detail section shows clarity and texture sliders", async ({ loggedInPage: page }) => {
+      await page.goto("/adjust-colors");
+      await uploadTestImage(page);
+
+      // Detail section should have sharpness/clarity controls
+      await expect(page.getByText("Detail").first()).toBeVisible();
+    });
+
     test("processes color adjustment and shows download", async ({ loggedInPage: page }) => {
       await page.goto("/adjust-colors");
       await uploadTestImage(page);
@@ -195,6 +214,14 @@ test.describe("GUI Color & Adjustment Tools", () => {
       await expect(btn).toHaveText(/Extract Colors/);
     });
 
+    test("submit button is enabled with file uploaded", async ({ loggedInPage: page }) => {
+      await page.goto("/color-palette");
+      await uploadTestImage(page);
+
+      const submitBtn = page.getByTestId("color-palette-submit");
+      await expect(submitBtn).toBeEnabled();
+    });
+
     test("extracts colors and displays palette", async ({ loggedInPage: page }) => {
       await page.goto("/color-palette");
       await uploadTestImage(page);
@@ -297,4 +324,73 @@ test.describe("GUI Color & Adjustment Tools", () => {
       });
     });
   });
+
+  // ========================================================================
+  // COLOR BLINDNESS SIMULATOR
+  // ========================================================================
+  test.describe("Color Blindness Simulator", () => {
+    test("renders tool page with dropzone", async ({ loggedInPage: page }) => {
+      await page.goto("/color-blindness");
+      await expect(page.getByText("Color Blindness").first()).toBeVisible();
+      await expect(page.getByText("Upload from computer")).toBeVisible();
+    });
+
+    test("shows simulation type dropdown after upload", async ({ loggedInPage: page }) => {
+      await page.goto("/color-blindness");
+      await uploadTestImage(page);
+
+      await expect(page.locator("#cb-simulation-type")).toBeVisible();
+    });
+
+    test("dropdown has grouped options (Red-Green, Blue-Yellow, Monochromatic)", async ({
+      loggedInPage: page,
+    }) => {
+      await page.goto("/color-blindness");
+      await uploadTestImage(page);
+
+      const select = page.locator("#cb-simulation-type");
+      // Verify optgroups exist
+      const optgroups = select.locator("optgroup");
+      await expect(optgroups).toHaveCount(3);
+    });
+
+    test("shows description text for selected type", async ({ loggedInPage: page }) => {
+      await page.goto("/color-blindness");
+      await uploadTestImage(page);
+
+      // Default is deuteranomaly -- should show description
+      await expect(page.getByText("Reduced green sensitivity")).toBeVisible();
+    });
+
+    test("changing simulation type updates description", async ({ loggedInPage: page }) => {
+      await page.goto("/color-blindness");
+      await uploadTestImage(page);
+
+      await page.selectOption("#cb-simulation-type", "achromatopsia");
+      await expect(page.getByText("Complete color blindness")).toBeVisible();
+    });
+
+    test("submit button disabled without file, enabled with file", async ({
+      loggedInPage: page,
+    }) => {
+      await page.goto("/color-blindness");
+
+      const submitBtn = page.getByTestId("color-blindness-submit");
+      await expect(submitBtn).toBeDisabled();
+
+      await uploadTestImage(page);
+      await expect(submitBtn).toBeEnabled();
+      await expect(submitBtn).toHaveText(/Simulate/);
+    });
+
+    test("processes simulation and shows download", async ({ loggedInPage: page }) => {
+      await page.goto("/color-blindness");
+      await uploadTestImage(page);
+
+      await page.getByTestId("color-blindness-submit").click();
+      await waitForProcessing(page);
+
+      await expect(page.getByTestId("color-blindness-download")).toBeVisible({ timeout: 15_000 });
+    });
+  });
 });