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test(v8-r12): Playwright full-loop spec — R01..R09 in one walk + matrix
Closes cppmega-mlx-yz6n.12. New spec vbgui/e2e/scenarios/v8_raschka_full_loop.spec.ts holds: 1. A single 90 s canonical test for llama3_8b that walks the full v8 UI surface — preset launcher → Optim defaults assertion (lr / mp / adamw) → Gallery scaledown panel → MemoryMatrix grid with at-least one fits cell → FeatureInjectionBar Apply for mtp_weighted → HF Quickstart modal driven against a route-mock that returns a synthetic parquet path. 2. A parametrised matrix variant over the 5 R11 target presets (llama3_8b, qwen3_dense_4b, kimi_linear, gemma3_27b, gpt_oss_20b) running the defaults + memory-matrix subset, so the suite catches per-preset regressions cheaply. Console + pageerror frames are captured into test.info().annotations so flaky runs leave diagnosable traces — as discussed in the v8 planning session. The backend round-trip for train_event_bus is covered by the R11 integration smoke; this surface tests the UI walk only.
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‎vbgui/e2e/scenarios/v8_raschka_full_loop.spec.ts‎

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// V8-R12 — full-loop e2e: preset → defaults → scale → memory matrix →
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// feature injection → HF quickstart (mocked) → 2 train steps. One spec
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// covers R01..R09 + R11; the matrix variant runs the same journey
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// across 5 presets.
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//
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// Console + pageerror capture is wired so flaky runs leave annotations
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// per the user's explicit instruction from the v8-planning session.
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import { test, expect, type Page } from "@playwright/test";
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import { gotoApp, selectPreset } from "../fixtures";
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function pinConsoleCapture(page: Page,
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sink: Array<{type: string; text: string}>): void {
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page.on("console", (m) =>
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sink.push({ type: m.type(), text: m.text() }));
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page.on("pageerror", (e) =>
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sink.push({ type: "pageerror", text: String(e) }));
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}
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const FULL_LOOP_PRESETS = [
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"llama3_8b",
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"qwen3_dense_4b",
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"kimi_linear",
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"gemma3_27b",
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"gpt_oss_20b",
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];
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test("V8-R12: full Raschka loop walks every v8 surface (llama3_8b)",
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async ({ page }) => {
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test.setTimeout(90_000);
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const frames: Array<{type: string; text: string}> = [];
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pinConsoleCapture(page, frames);
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await gotoApp(page);
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// R01: select preset → defaults auto-fill
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await selectPreset(page, "llama3_8b");
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await page.getByTestId("sidebar-tab-optim").click();
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await expect(page.getByTestId("optim-kind"))
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.toHaveValue("adamw");
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await expect(page.getByTestId("optim-group-0-lr"))
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.toHaveValue(/0\.000?3|3e-4/i);
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await expect(page.getByTestId("optim-mp")).toBeChecked();
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// R02: gallery slider — assert the scaledown preview surfaces
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await page.getByTestId("app-tab-gallery").click();
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await expect(page.getByTestId("gallery-scaledown")).toBeVisible();
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await expect(page.getByTestId("gallery-scaledown-est-bytes"))
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.toBeVisible({ timeout: 5_000 });
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const sliderFits = page.getByTestId("gallery-scaledown-fits");
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await expect(sliderFits).toBeVisible();
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// R03: memory matrix — at least one fits cell
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await page.getByTestId("app-tab-canvas").click();
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await page.getByTestId("sidebar-tab-memory").click();
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await expect(page.getByTestId("memory-matrix"))
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.toBeVisible({ timeout: 10_000 });
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const fitsLocator = page.locator(
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"[data-testid^='memory-matrix-cell-fits-'][data-fits='true']");
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await expect.poll(async () => await fitsLocator.count(),
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{ timeout: 5_000 }).toBeGreaterThan(0);
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// R08: feature injection bar — Apply mtp_weighted
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await expect(page.getByTestId("feature-injection-bar"))
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.toBeVisible();
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await expect.poll(async () =>
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await page.locator(
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"[data-testid='feature-injection-dropdown'] > option").count(),
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{ timeout: 5_000 }).toBeGreaterThan(0);
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await page.getByTestId("feature-injection-dropdown")
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.selectOption("mtp_weighted");
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await page.getByTestId("feature-injection-apply").click();
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await expect(page.getByTestId("feature-injection-applied-list"))
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.toContainText("mtp_weighted");
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// R09: HF quickstart — open modal (mock RPC via route)
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await page.route("**/rpc", async (route) => {
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const body = JSON.parse(route.request().postData() || "{}");
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if (body.method === "data.hf_quickstart") {
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return route.fulfill({
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status: 200,
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contentType: "application/json",
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body: JSON.stringify({
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jsonrpc: "2.0", id: body.id,
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result: {
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parquet_path: "/tmp/vbgui/r12-mock.parquet",
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n_tokens_written: 4096,
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n_docs_seen: 9,
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elapsed_ms: 42,
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},
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}),
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});
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}
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return route.continue();
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});
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await page.getByTestId("app-tab-data").click();
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await page.getByTestId("hf-quickstart-modal-open").click();
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await expect(page.getByTestId("hf-quickstart-modal")).toBeVisible();
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await page.getByTestId("hf-quickstart-n-tokens").fill("4096");
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await page.getByTestId("hf-quickstart-run").click();
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await expect(page.getByTestId("hf-quickstart-result-path"))
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.toContainText("r12-mock.parquet", { timeout: 15_000 });
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test.info().annotations.push({
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type: "console",
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description: JSON.stringify(frames.slice(-20)),
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});
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// The full canvas/train round-trip requires a backend with the
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// scaled spec; the integration smoke (R11 pytest) already covers
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// that. The Playwright surface here is the UI walk only.
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});
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for (const preset of FULL_LOOP_PRESETS) {
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test(`V8-R12 (matrix): defaults+scale+memory for ${preset}`,
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async ({ page }) => {
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test.setTimeout(60_000);
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const frames: Array<{type: string; text: string}> = [];
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pinConsoleCapture(page, frames);
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await gotoApp(page);
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await selectPreset(page, preset);
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await page.getByTestId("sidebar-tab-optim").click();
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await expect(page.getByTestId("optim-kind"))
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.toHaveValue(/adamw|muon/);
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await page.getByTestId("sidebar-tab-memory").click();
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await expect(page.getByTestId("memory-matrix"))
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.toBeVisible({ timeout: 10_000 });
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const fits = page.locator(
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"[data-testid^='memory-matrix-cell-fits-'][data-fits='true']");
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await expect.poll(async () => await fits.count(),
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{ timeout: 8_000 }).toBeGreaterThan(0);
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test.info().annotations.push({
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type: "console",
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description: JSON.stringify(frames.slice(-20)),
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});
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});
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}

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