diff --git a/examples/reproducers/issue-login-modal-leak/README.md b/examples/reproducers/issue-login-modal-leak/README.md
new file mode 100644
index 00000000..3de30abd
--- /dev/null
+++ b/examples/reproducers/issue-login-modal-leak/README.md
@@ -0,0 +1,16 @@
+# LoginModalController JSDOM Leak Reproducer
+
+Reproduction for the JSDOM async activity leak in LoginModalController tests.
+
+## Usage
+
+```bash
+node examples/reproducers/issue-login-modal-leak/repro.mjs
+```
+
+## Expected Failure
+
+The script should fail with an uncaught exception due to async activity after test end:
+```
+# Error: Test "LoginModalController shows NIP-46 handshake panel" ... generated asynchronous activity after the test ended. This activity created the error "ReferenceError: HTMLElement is not defined" ...
+```
diff --git a/examples/reproducers/issue-login-modal-leak/repro.mjs b/examples/reproducers/issue-login-modal-leak/repro.mjs
new file mode 100644
index 00000000..ad05859d
--- /dev/null
+++ b/examples/reproducers/issue-login-modal-leak/repro.mjs
@@ -0,0 +1,175 @@
+import test, { beforeEach, afterEach } from 'node:test';
+import { strict as assert } from 'node:assert';
+import { readFile } from 'node:fs/promises';
+import { JSDOM } from 'jsdom';
+import LoginModalController from '../../../js/ui/loginModalController.js';
+
+const loginModalHtml = await readFile(
+  new URL('../../../components/login-modal.html', import.meta.url),
+  'utf8',
+);
+
+let dom;
+let container;
+let controller;
+
+async function waitForAnimationFrame(window, cycles = 1) {
+  for (let i = 0; i < cycles; i += 1) {
+    await new Promise((resolve) => window.requestAnimationFrame(() => resolve()));
+  }
+}
+
+function createMatchMediaList(query, initialMatches = false) {
+    let matches = Boolean(initialMatches);
+    const listeners = new Set();
+
+    const notify = () => {
+      const event = { matches, media: query, type: 'change' };
+      listeners.forEach((listener) => {
+        try {
+          listener(event);
+        } catch {}
+      });
+    };
+
+    return {
+      get matches() {
+        return matches;
+      },
+      set matches(value) {
+        matches = Boolean(value);
+      },
+      media: query,
+      addEventListener(type, listener) {
+        if (type === 'change' && typeof listener === 'function') {
+          listeners.add(listener);
+        }
+      },
+      removeEventListener(type, listener) {
+        if (type === 'change' && typeof listener === 'function') {
+          listeners.delete(listener);
+        }
+      },
+      addListener(listener) {
+        if (typeof listener === 'function') {
+          listeners.add(listener);
+        }
+      },
+      removeListener(listener) {
+        if (typeof listener === 'function') {
+          listeners.delete(listener);
+        }
+      },
+      dispatchEvent(event) {
+        if (!event || event.type !== 'change') {
+          return true;
+        }
+        listeners.forEach((listener) => {
+          try {
+            listener(event);
+          } catch {}
+        });
+        return true;
+      },
+      setMatches(value) {
+        matches = Boolean(value);
+        notify();
+      },
+    };
+  }
+
+beforeEach(() => {
+  dom = new JSDOM(
+    '<!DOCTYPE html><html><body><div id="modalMount"></div></body></html>',
+    {
+      url: 'https://example.com',
+      pretendToBeVisual: true,
+    },
+  );
+
+  global.window = dom.window;
+  global.document = dom.window.document;
+  global.HTMLElement = dom.window.HTMLElement;
+  global.HTMLButtonElement = dom.window.HTMLButtonElement;
+  global.HTMLInputElement = dom.window.HTMLInputElement;
+  global.HTMLTextAreaElement = dom.window.HTMLTextAreaElement;
+  global.HTMLFormElement = dom.window.HTMLFormElement;
+  global.HTMLTemplateElement = dom.window.HTMLTemplateElement;
+  global.Node = dom.window.Node;
+  global.Element = dom.window.Element;
+  global.MutationObserver = dom.window.MutationObserver;
+
+  window.requestAnimationFrame = (callback) => callback(0);
+  global.requestAnimationFrame = window.requestAnimationFrame;
+
+  window.__matchMediaMocks = [];
+  window.matchMedia = (query) => {
+    const mql = createMatchMediaList(query, false);
+    window.__matchMediaMocks.push(mql);
+    return mql;
+  };
+  global.matchMedia = window.matchMedia;
+
+  container = document.getElementById('modalMount');
+  container.innerHTML = loginModalHtml;
+});
+
+afterEach(() => {
+  if (controller) {
+    controller.destroy();
+    controller = null;
+  }
+
+  delete global.window;
+  delete global.document;
+  delete global.HTMLElement;
+  delete global.HTMLButtonElement;
+  delete global.HTMLInputElement;
+  delete global.HTMLTextAreaElement;
+  delete global.HTMLFormElement;
+  delete global.HTMLTemplateElement;
+  delete global.Node;
+  delete global.Element;
+  delete global.MutationObserver;
+  delete global.requestAnimationFrame;
+  delete global.matchMedia;
+
+  if (dom) {
+    dom.window.close();
+    dom = null;
+  }
+});
+
+function createController(options = {}) {
+    const modalElement = container.querySelector('#loginModal');
+    return new LoginModalController({
+        modalElement,
+        providers: options.providers || [],
+        services: options.services || {},
+        callbacks: options.callbacks || {},
+    });
+}
+
+test('LoginModalController shows NIP-46 handshake panel', async (t) => {
+    const providers = [{ id: 'nip46', label: 'Remote Signer', login: async () => {} }];
+    const authService = { requestLogin: async () => {} };
+    controller = createController({ providers, services: { authService } });
+    controller.initialize();
+
+    const providerButton = container.querySelector('[data-provider-id="nip46"]');
+    assert.ok(providerButton, 'nip46 provider button should be present');
+
+    // Trigger click on provider
+    const clickEvent = new dom.window.Event('click', { bubbles: true });
+    providerButton.dispatchEvent(clickEvent);
+
+    // Wait for the nip46 form to appear
+    await waitForAnimationFrame(window, 5);
+
+    const form = container.querySelector('[data-nip46-form]');
+    assert.ok(form, 'nip46 form should be present');
+
+    const handshakePanel = form.querySelector('[data-nip46-handshake-panel]');
+    assert.ok(handshakePanel, 'handshake panel should be present');
+    assert.ok(!handshakePanel.classList.contains('hidden'), 'handshake panel should not be hidden');
+});
diff --git a/examples/reproducers/issue-moderation-block-state/README.md b/examples/reproducers/issue-moderation-block-state/README.md
new file mode 100644
index 00000000..b21fd84c
--- /dev/null
+++ b/examples/reproducers/issue-moderation-block-state/README.md
@@ -0,0 +1,21 @@
+# VideoCard Block State Reproducer
+
+Reproduction for the bug where VideoCard block action fails to restore trusted mute hide state after override.
+
+## Usage
+
+```bash
+node examples/reproducers/issue-moderation-block-state/repro.mjs
+```
+
+## Expected Failure
+
+The script should fail with an assertion error:
+```
+not ok 1 - VideoCard block action restores trusted mute hide state after override
+...
+  error: |-
+    Expected values to be strictly equal:
+
+    false !== true
+```
diff --git a/examples/reproducers/issue-moderation-block-state/repro.mjs b/examples/reproducers/issue-moderation-block-state/repro.mjs
new file mode 100644
index 00000000..890c48fd
--- /dev/null
+++ b/examples/reproducers/issue-moderation-block-state/repro.mjs
@@ -0,0 +1,198 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import { JSDOM } from "jsdom";
+
+import "../../../tests/test-helpers/setup-localstorage.mjs";
+import { VideoCard } from "../../../js/ui/components/VideoCard.js";
+import { clearModerationOverride, setModerationOverride } from "../../../js/state/cache.js";
+import {
+  withMockedNostrTools,
+  createModerationAppHarness,
+} from "../../../tests/helpers/moderation-test-helpers.mjs";
+import {
+  applyModerationContextDatasets,
+  normalizeVideoModerationContext,
+} from "../../../js/ui/moderationUiHelpers.js";
+import { userBlocks } from "../../../js/userBlocks.js";
+
+function setupDom(t) {
+  const dom = new JSDOM("<!DOCTYPE html><html><body></body></html>", {
+    url: "https://example.com",
+    pretendToBeVisual: true,
+  });
+
+  const { window } = dom;
+  const previous = new Map();
+  const keys = [
+    "window",
+    "document",
+    "HTMLElement",
+    "Element",
+    "Node",
+    "MouseEvent",
+    "CustomEvent",
+    "ResizeObserver",
+    "requestAnimationFrame",
+    "cancelAnimationFrame",
+  ];
+
+  keys.forEach((key) => {
+    const hadValue = Object.prototype.hasOwnProperty.call(globalThis, key);
+    previous.set(key, hadValue ? globalThis[key] : Symbol.for("__undefined__"));
+    if (key === "requestAnimationFrame" && typeof window[key] !== "function") {
+      window.requestAnimationFrame = (cb) => setTimeout(() => cb(Date.now()), 16);
+    } else if (key === "cancelAnimationFrame" && typeof window[key] !== "function") {
+      window.cancelAnimationFrame = (id) => clearTimeout(id);
+    } else if (key === "ResizeObserver" && typeof window[key] !== "function") {
+      window.ResizeObserver = class {
+        observe() {}
+        unobserve() {}
+        disconnect() {}
+      };
+    }
+    globalThis[key] = window[key];
+  });
+
+  // Mock navigator safely
+  const originalNavigator = globalThis.navigator;
+  Object.defineProperty(globalThis, "navigator", {
+    value: window.navigator,
+    writable: true,
+    configurable: true,
+  });
+
+  if (!window.requestAnimationFrame) {
+    window.requestAnimationFrame = (cb) => setTimeout(() => cb(Date.now()), 16);
+    globalThis.requestAnimationFrame = window.requestAnimationFrame;
+  }
+
+  if (!window.cancelAnimationFrame) {
+    window.cancelAnimationFrame = (id) => clearTimeout(id);
+    globalThis.cancelAnimationFrame = window.cancelAnimationFrame;
+  }
+
+  if (!window.ResizeObserver) {
+    class ResizeObserverStub {
+      observe() {}
+      unobserve() {}
+      disconnect() {}
+    }
+    window.ResizeObserver = ResizeObserverStub;
+    globalThis.ResizeObserver = ResizeObserverStub;
+  }
+
+  t.after(() => {
+    dom.window.close();
+    keys.forEach((key) => {
+      const previousValue = previous.get(key);
+      if (previousValue === Symbol.for("__undefined__")) {
+        delete globalThis[key];
+      } else {
+        globalThis[key] = previousValue;
+      }
+    });
+    // Restore navigator
+    Object.defineProperty(globalThis, "navigator", {
+      value: originalNavigator,
+      writable: true,
+      configurable: true,
+    });
+  });
+
+  return { window, document: window.document };
+}
+
+test("VideoCard block action restores trusted mute hide state after override", async (t) => {
+  const { document } = setupDom(t);
+  withMockedNostrTools(t);
+
+  const app = await createModerationAppHarness();
+  app.getActiveModerationThresholds = () => ({
+    autoplayBlockThreshold: Number.POSITIVE_INFINITY,
+    blurThreshold: Number.POSITIVE_INFINITY,
+    trustedMuteHideThreshold: 1,
+    trustedSpamHideThreshold: Number.POSITIVE_INFINITY,
+  });
+  app.pubkey = "f".repeat(64);
+  app.isUserLoggedIn = () => true;
+  app.showStatus = () => {};
+  app.showError = () => {};
+  app.onVideosShouldRefresh = async () => {};
+
+  const originalEnsureLoaded = userBlocks.ensureLoaded;
+  const originalAddBlock = userBlocks.addBlock;
+  const originalIsBlocked = userBlocks.isBlocked;
+
+  userBlocks.ensureLoaded = async () => {};
+  userBlocks.addBlock = async () => ({ ok: true });
+  userBlocks.isBlocked = () => false;
+
+  t.after(() => {
+    userBlocks.ensureLoaded = originalEnsureLoaded;
+    userBlocks.addBlock = originalAddBlock;
+    userBlocks.isBlocked = originalIsBlocked;
+  });
+
+  const videoId = "d".repeat(64);
+  const video = {
+    id: videoId,
+    title: "Muted Hide Clip",
+    pubkey: "e".repeat(64),
+    moderation: {
+      trustedMuted: true,
+      trustedMuteCount: 1,
+      trustedMuters: ["f".repeat(64)],
+      trustedCount: 0,
+      reportType: "nudity",
+    },
+  };
+
+  app.videosMap.set(video.id, video);
+  app.currentVideo = video;
+  app.decorateVideoModeration(video);
+
+  const card = new VideoCard({
+    document,
+    video,
+    formatters: {
+      formatTimeAgo: () => "moments ago",
+    },
+    helpers: {
+      isMagnetSupported: () => false,
+    },
+  });
+
+  document.body.appendChild(card.getRoot());
+
+  assert.equal(
+    normalizeVideoModerationContext(card.video?.moderation).activeHidden,
+    true,
+  );
+  assert.equal(card.getRoot().dataset.moderationHidden, "true");
+
+  card.onModerationOverride = ({ video: overrideVideo, card: overrideCard }) =>
+    app.handleModerationOverride({ video: overrideVideo, card: overrideCard });
+
+  card.moderationActionButton.click();
+  await new Promise((resolve) => setTimeout(resolve, 0));
+
+  const contextAfterOverride = normalizeVideoModerationContext(
+    card.video?.moderation,
+  );
+  assert.equal(contextAfterOverride.overrideActive, true);
+  assert.equal(contextAfterOverride.activeHidden, false);
+  assert.ok(card.moderationBlockButton);
+
+  card.onModerationBlock = ({ video: targetVideo, card: targetCard }) =>
+    app.handleModerationBlock({ video: targetVideo, card: targetCard });
+
+  card.moderationBlockButton.click();
+  await new Promise((resolve) => setTimeout(resolve, 0));
+
+  const contextAfterHide = normalizeVideoModerationContext(card.video?.moderation);
+  // This is where it fails in the original test
+  assert.equal(contextAfterHide.overrideActive, false, "Override should be cleared after block");
+  assert.equal(contextAfterHide.activeHidden, true, "Content should be hidden again after block");
+  assert.equal(card.getRoot().dataset.moderationHidden, "true", "Card should have hidden dataset");
+  assert.equal(card.moderationBlockButton, null, "Block button should be gone");
+});
diff --git a/examples/reproducers/issue-popover-flip/README.md b/examples/reproducers/issue-popover-flip/README.md
new file mode 100644
index 00000000..17995c54
--- /dev/null
+++ b/examples/reproducers/issue-popover-flip/README.md
@@ -0,0 +1,27 @@
+# Popover Flip Layout Reproducer
+
+Reproduction for the visual regression layout issue where the popover fails to flip to the top in a restricted viewport.
+
+## Prerequisites
+
+You must build the CSS assets before running the test:
+
+```bash
+npm run build:css
+```
+
+## Usage
+
+```bash
+npx playwright test -c examples/reproducers/issue-popover-flip/playwright.config.ts
+```
+
+## Expected Failure
+
+The test should fail asserting that the popover is within the viewport (it fails to flip to top, so it overflows bottom):
+```
+Error: expect(received).toBeLessThanOrEqual(expected)
+
+Expected: <= 250.5
+Received: 311.625
+```
diff --git a/examples/reproducers/issue-popover-flip/playwright.config.ts b/examples/reproducers/issue-popover-flip/playwright.config.ts
new file mode 100644
index 00000000..b0fcb89e
--- /dev/null
+++ b/examples/reproducers/issue-popover-flip/playwright.config.ts
@@ -0,0 +1,14 @@
+import { defineConfig } from "@playwright/test";
+
+export default defineConfig({
+  testDir: ".",
+  use: {
+    baseURL: "http://127.0.0.1:4173",
+  },
+  webServer: {
+    command: "npx http-server ../../.. -p 4173 -a 127.0.0.1 -c-1 --silent",
+    url: "http://127.0.0.1:4173",
+    reuseExistingServer: true,
+    timeout: 120_000,
+  },
+});
diff --git a/examples/reproducers/issue-popover-flip/repro.spec.ts b/examples/reproducers/issue-popover-flip/repro.spec.ts
new file mode 100644
index 00000000..7712111c
--- /dev/null
+++ b/examples/reproducers/issue-popover-flip/repro.spec.ts
@@ -0,0 +1,55 @@
+import { expect, test } from "@playwright/test";
+import {
+  getPanelMetrics,
+  getPanelWithTriggerMetrics,
+} from "../../../tests/e2e/helpers/popoverUtils";
+import {
+  applyReducedMotion,
+  ensureTestAssets,
+  failOnConsoleErrors,
+  waitForRAF,
+} from "../../../tests/e2e/helpers/uiTestUtils";
+
+function assertWithinViewport(metrics: {
+  rect: { top: number; left: number; right: number; bottom: number };
+  viewport: { width: number; height: number };
+}) {
+  const tolerance = 0.5;
+  expect(metrics.rect.left).toBeGreaterThanOrEqual(-tolerance);
+  expect(metrics.rect.top).toBeGreaterThanOrEqual(-tolerance);
+  expect(metrics.rect.right).toBeLessThanOrEqual(metrics.viewport.width + tolerance);
+  expect(metrics.rect.bottom).toBeLessThanOrEqual(metrics.viewport.height + tolerance);
+}
+
+test.describe("popover layout scenarios", () => {
+  test.beforeEach(async ({ page }) => {
+    await ensureTestAssets(page);
+    await applyReducedMotion(page);
+    failOnConsoleErrors(page);
+    await page.goto("/docs/popover-scenarios.html", { waitUntil: "networkidle" });
+  });
+
+  // flaky: Popover fails to flip to top in restricted viewport (floating-ui issue?)
+  test("keeps the bottom-right grid menu inside the viewport", async ({ page }) => {
+    // Force a tall body to ensure there is space for the popover to flip to the top
+    await page.addStyleTag({ content: "body { min-height: 2000px !important; }" });
+    // Reduce viewport height to force the menu to flip to the top
+    await page.setViewportSize({ width: 1280, height: 250 });
+
+    const trigger = page.locator('[data-test-trigger="grid-bottom-right"]');
+    // Scroll to bottom to ensure the element is near the viewport edge
+    await page.evaluate(() => window.scrollTo(0, document.body.scrollHeight));
+
+    await trigger.click();
+    const panel = page.locator('[data-test-panel="grid-bottom-right"]');
+    await expect(panel).toHaveAttribute("data-popover-state", "open");
+
+    const metrics = await getPanelMetrics(panel);
+
+    assertWithinViewport(metrics);
+    expect(metrics.state).toBe("open");
+    expect(metrics.placement.startsWith("top"), `Expected placement to start with 'top' but got '${metrics.placement}'`).toBeTruthy();
+    expect(metrics.popoverMaxWidth).toBe(metrics.tokenMaxWidth);
+    expect(metrics.tokenMaxWidth.length).toBeGreaterThan(0);
+  });
+});