index.ts

1import {2  detectCardForm,3  detectLoginFields,4  findOTPDigitBoxGroup,5  findOtpSignalingGroup,6  getDeepActiveInput,7  getPageDomain,8  isAnyCredentialForm,9  isEmailFirstForm,10  isLoginForm,11  isSignupForm,12  isTOTPField,13  isVisible,14} from "./detect";15import {16  type CardSelectorEntry,17  injectFieldIcon,18  type SelectorEntry,19  showAutofillSelector,20  showCardSelector,21  showPasskeyAvailable,22  showPasskeyProGate,23  showPasskeyRegistrationOffer,24  showRememberSiteToast,25  showTotpCopyToast,26  showTOTPSelector,27} from "./inject";28import { detectBrowser } from "../shared/browser";29import { FIREFOX_USE_CONTENT_SCRIPT_PROXY } from "../shared/passkey-flags";30import { fillAllowed, fillCardForm, fillFields, fillOTPDigitBoxes, fillTOTPCode, setNativeValue } from "./fill";31import { resolveAutofillInteractionTargets } from "./interaction";32import { setupSaveDetection } from "./save";33import { contentMLDetector } from "./content-ml-detector";34import { detectPasswordPolicy } from "./policy";35import type { FieldPrediction } from "../shared/ml";36import type { SavedIdentity, VaultEntry } from "../shared/types";3738// WeakMap (not WeakSet) — we keep the per-input cleanup callback as the value39// so we can tear down listeners if we ever need to re-process the same field.40// When the input is GC'd (SPA nav, React re-render), the map entry goes with41// it and we can re-inject without leaking the old handler.42const processedInputs = new WeakMap<HTMLInputElement, () => void>();43const AUTOFILL_FIELD_TYPES = new Set(["password", "username", "email"]);4445let currentDismiss: (() => void) | null = null;46// Field whose selector is currently open — used to avoid dismiss+reopen flicker47let currentAnchorField: HTMLInputElement | null = null;48// Prevents two concurrent handleFieldInteraction calls for the same field49const pendingInteractions = new WeakSet<HTMLInputElement>();50// Tracks the last field the user explicitly dismissed (Escape / click-outside / Tab).51// Suppresses spurious reopens until focus moves to a different field. Layer 152// of the dismissal model — see Projects.md §4.12.53let lastDismissedField: HTMLInputElement | null = null;5455// ── Dismissal lock (Layer 2) ────────────────────────────────────────56// After any user-initiated dismiss, briefly block ALL reopens regardless of57// which field is focused. Catches the case where a page rapidly moves focus58// between fields after Escape — without this, focus moving to a SECOND field59// in <100ms would re-trigger the popup before the user finished dismissing.60const DISMISS_LOCK_MS = 800;61let dismissLock = false;62let dismissLockTimer: ReturnType<typeof setTimeout> | null = null;63// Set when the inline popup was summoned specifically for a passkey-unlock64// flow. The VAULT_UNLOCKED handler checks this to skip re-triggering autofill65// (the passkey toast handles the next step instead).66let passkeySummonActive = false;67// Set while the passkey approval toast is visible. Prevents handleFieldInteraction68// from opening the autofill selector alongside it. Cleared by a window message69// posted by inject.tsx when the toast closes (and by DISMISS_PASSKEY_TOAST).70let passkeyToastActive = false;71function startDismissLock(): void {72  dismissLock = true;73  if (dismissLockTimer) clearTimeout(dismissLockTimer);74  dismissLockTimer = setTimeout(() => { dismissLock = false; }, DISMISS_LOCK_MS);75}76function canOpen(): boolean { return !dismissLock; }7778// ── Fill-success lock ───────────────────────────────────────────────79// After Peach autofills a form, the popup must NOT reappear on the filled80// fields, on the submit button (some sites refocus it briefly), or on any81// field in that form — even when host-page DOM mutations or the form's own82// validation flow refocus an input. Implemented as a WeakSet of forms plus83// a page-level timestamp:84//   - filledForms: every form Peach has filled this page session. Survives85//     until the form leaves the DOM (WeakSet GC).86//   - pageFilledAt: timestamp of last fill. Used as a 3s belt-and-suspenders87//     window for fields that aren't inside a <form> element (some SPAs).88// SPA navigation resets pageFilledAt via the urlObserver below; filledForms89// self-empties as old form elements get GC'd.90const filledForms = new WeakSet<HTMLFormElement>();91let pageFilledAt: number | null = null;92const PAGE_FILL_GRACE_MS = 3000;9394function recordFillSuccess(...fields: (HTMLInputElement | null | undefined)[]): void {95  for (const f of fields) {96    if (!f) continue;97    const form = f.closest("form");98    if (form) filledForms.add(form);99  }100  pageFilledAt = Date.now();101}102103export /* @testable */ function wasAlreadyFilled(field: HTMLInputElement): boolean {104  const form = field.closest("form");105  if (form && filledForms.has(form)) return true;106  if (pageFilledAt !== null && Date.now() - pageFilledAt < PAGE_FILL_GRACE_MS) return true;107  return false;108}109110function clearFillStateForExplicitSummon(field: HTMLInputElement): void {111  const form = field.closest("form");112  if (form) filledForms.delete(form);113  pageFilledAt = null;114}115116// Some sites briefly focus the submit button when the user clicks it (visual117// feedback, blur/focus dance for validation animations). Catch those at the118// focusin layer so we don't re-trigger handleFieldInteraction for an event119// target that was never going to be a credential field anyway.120function isSubmitButton(el: EventTarget | null): boolean {121  if (!(el instanceof HTMLElement)) return false;122  if (el instanceof HTMLButtonElement && el.type !== "button") return true;123  if (el instanceof HTMLInputElement && el.type === "submit") return true;124  if (el.getAttribute("type") === "submit") return true;125  const text = (el.textContent?.trim() ?? el.getAttribute("value") ?? "").toLowerCase();126  if (!text || text.length > 24) return false;127  return /^(submit|sign[ -]?in|log[ -]?in|continue|next|go)$/i.test(text);128}129130function debounce<T extends (...args: unknown[]) => void>(131  fn: T,132  ms: number133): (...args: Parameters<T>) => void {134  let timer: ReturnType<typeof setTimeout>;135  return (...args: Parameters<T>) => {136    clearTimeout(timer);137    timer = setTimeout(() => fn(...args), ms);138  };139}140141function showToast(message: string): void {142  const toast = document.createElement("div");143  toast.style.cssText = `144    position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);145    background: #131109; color: #F0E8D8; padding: 8px 16px;146    border-radius: 8px; font-family: 'IBM Plex Mono', monospace;147    font-size: 11px; z-index: 2147483647; opacity: 0;148    transition: opacity 200ms ease;149    border: 1px solid rgba(240,232,216,0.07);150    pointer-events: none;151  `;152  toast.textContent = message;153  document.body.appendChild(toast);154  requestAnimationFrame(() => { toast.style.opacity = "1"; });155  setTimeout(() => {156    toast.style.opacity = "0";157    setTimeout(() => toast.remove(), 200);158  }, 2000);159}160161function showSearchPalette(capability?: string): void {162  const host = document.createElement("div");163  host.style.cssText = "position:fixed;top:80px;left:50%;transform:translateX(-50%);z-index:2147483647;width:340px;";164  document.body.appendChild(host);165  const shadow = host.attachShadow({ mode: "closed" });166167  const style = document.createElement("style");168  style.textContent = `169    .p{background:#131109;border:1px solid rgba(240,232,216,.12);border-radius:12px;170      font-family:'IBM Plex Mono',monospace;font-size:12px;color:#F0E8D8;171      box-shadow:0 8px 24px rgba(0,0,0,.5);overflow:hidden}172    .h{padding:10px 12px 8px;border-bottom:1px solid rgba(240,232,216,.08);173      font-size:11px;color:rgba(240,232,216,.5);display:flex;justify-content:space-between;align-items:center}174    .x{background:none;border:none;color:rgba(240,232,216,.4);cursor:pointer;font-size:14px;padding:0;line-height:1}175    .s{padding:8px 12px}176    .s input{width:100%;box-sizing:border-box;background:rgba(240,232,216,.06);177      border:1px solid rgba(240,232,216,.12);border-radius:6px;color:#F0E8D8;178      padding:6px 8px;font-family:inherit;font-size:12px;outline:none}179    .l{max-height:220px;overflow-y:auto}180    .e{padding:8px 12px;cursor:pointer;display:flex;flex-direction:column;gap:2px}181    .e:hover{background:rgba(240,232,216,.06)}182    .et{font-size:12px}183    .eu{font-size:10px;color:rgba(240,232,216,.45)}184    .em{padding:12px;color:rgba(240,232,216,.4);text-align:center}185  `;186187  let allEntries: SelectorEntry[] = [];188  let query = "";189190  const panel = document.createElement("div");191  panel.className = "p";192193  const hdr = document.createElement("div");194  hdr.className = "h";195  const hdrText = document.createElement("span");196  hdrText.textContent = "No form detected — search your vault";197  const closeBtn = document.createElement("button");198  closeBtn.className = "x";199  closeBtn.textContent = "✕";200  hdr.appendChild(hdrText);201  hdr.appendChild(closeBtn);202203  const searchWrap = document.createElement("div");204  searchWrap.className = "s";205  const searchInput = document.createElement("input");206  searchInput.placeholder = "search...";207  searchWrap.appendChild(searchInput);208209  const list = document.createElement("div");210  list.className = "l";211212  panel.appendChild(hdr);213  panel.appendChild(searchWrap);214  panel.appendChild(list);215  shadow.appendChild(style);216  shadow.appendChild(panel);217218  function close() { host.remove(); }219220  closeBtn.onclick = close;221222  function onKeyDown(e: KeyboardEvent) {223    if (e.key === "Escape") { close(); document.removeEventListener("keydown", onKeyDown, true); }224  }225  document.addEventListener("keydown", onKeyDown, true);226227  function render() {228    const q = query.toLowerCase();229    const filtered = q230      ? allEntries.filter(e => e.title.toLowerCase().includes(q) || (e.username ?? "").toLowerCase().includes(q))231      : allEntries;232    list.innerHTML = "";233    if (filtered.length === 0) {234      const em = document.createElement("div");235      em.className = "em";236      em.textContent = query ? "no matches" : "vault is empty";237      list.appendChild(em);238      return;239    }240    for (const entry of filtered.slice(0, 20)) {241      const row = document.createElement("div");242      row.className = "e";243      const title = document.createElement("div");244      title.className = "et";245      title.textContent = entry.title;246      row.appendChild(title);247      if (entry.username) {248        const user = document.createElement("div");249        user.className = "eu";250        user.textContent = entry.username;251        row.appendChild(user);252      }253      row.onclick = async () => {254        // MV-1: vault-wide search list is a cross-domain summon — the user255        // explicitly picked this entry to fill on this page.256        const resp = await chrome.runtime.sendMessage({ type: "GET_ENTRY_FOR_FILL", payload: { id: entry.id, capability } });257        const r = resp as { ok: boolean; data?: { password?: string } };258        if (r.ok && r.data?.password) {259          let alreadyWritten = false;260          try {261            await navigator.clipboard.writeText(r.data.password);262            alreadyWritten = true;263          } catch (err) {264            console.warn("[Peach] clipboard write denied:", err);265          }266          const copyResp = await chrome.runtime.sendMessage({267            type: "COPY",268            payload: { text: r.data.password, label: "Password", alreadyWritten },269          }) as { ok?: boolean } | undefined;270          if (alreadyWritten || copyResp?.ok) {271            showToast("Password copied");272          } else {273            showToast("Could not copy password — clipboard blocked");274          }275        } else {276          showToast("Could not copy password");277        }278        close();279        document.removeEventListener("keydown", onKeyDown, true);280      };281      list.appendChild(row);282    }283  }284285  searchInput.oninput = () => { query = searchInput.value; render(); };286287  // The browser-issued command capability, not page UI state, authorizes the288  // vault-wide inventory.289  fetchAutofillEntries(getPageDomain(), true, capability).then(result => {290    if (result.locked) { showToast("Vault is locked — open Peach to unlock"); close(); return; }291    allEntries = result.entries;292    render();293    searchInput.focus();294  });295}296297function findTOTPField(root: Document | Element = document): HTMLInputElement | null {298  const inputs = root.querySelectorAll<HTMLInputElement>("input");299  for (const input of inputs) {300    if (isTOTPField(input)) return input;301  }302  return null;303}304305function findSameLoginTOTPField(passwordEl: HTMLInputElement): HTMLInputElement | null {306  const form = passwordEl.closest("form");307  return findTOTPField(form ?? document);308}309310311async function handleAutofill(312  _field: HTMLInputElement,313  usernameEl: HTMLInputElement | null,314  passwordEl: HTMLInputElement | null,315  entry: VaultEntry,316  emailEl?: HTMLInputElement | null317): Promise<{ filledTOTPField: HTMLInputElement | null; gatePassed: boolean }> {318  if (!entry.username && !entry.password && !entry.email) return { filledTOTPField: null, gatePassed: false };319  const pageDomain = getPageDomain();320  const form = (passwordEl ?? usernameEl)?.closest("form") as HTMLFormElement | null ?? null;321  // Fill the email field with entry.email if set; fall back to entry.username when322  // it looks like an email address (sites that store email-as-username and have a323  // separate email field on signup forms).324  const emailValue = entry.email ?? (entry.username?.includes("@") ? entry.username : "");325  const gatePassed = fillFields(usernameEl, passwordEl, entry.username ?? "", entry.password ?? "", form, pageDomain, emailEl, emailValue);326  let filledTOTPField: HTMLInputElement | null = null;327328  if (entry.canary && gatePassed) {329    chrome.runtime.sendMessage({330      type: "FIRE_CANARY_PING",331      payload: {332        webhookUrl: entry.canary.webhookUrl,333        entryTitle: entry.title,334        trigger: "autofilled",335      },336    }).catch(() => {});337    chrome.runtime.sendMessage({338      type: "UPDATE_ENTRY",339      payload: {340        id: entry.id,341        patch: {342          canary: {343            ...entry.canary,344            lastPinged: Date.now(),345            pingCount: (entry.canary.pingCount ?? 0) + 1,346          },347        },348      },349    }).catch(() => {});350  }351352  // The background sends a freshly-generated 6-digit code (totpCode), never the353  // base32 seed (SEV-3-C). Fill the code straight in.354  const totpCode = (entry as { totpCode?: string }).totpCode;355  if (totpCode && gatePassed) {356    const code = totpCode;357    const totpField = passwordEl ? findSameLoginTOTPField(passwordEl) : null;358    if (fillTOTPCode(totpField, code, form, pageDomain)) {359      filledTOTPField = totpField;360    }361    let alreadyWritten = false;362    try {363      await navigator.clipboard.writeText(code);364      alreadyWritten = true;365    } catch (err) {366      console.warn("[Peach] clipboard write denied:", err);367    }368    const response = await chrome.runtime.sendMessage({369      type: "COPY",370      payload: { text: code, label: "TOTP", alreadyWritten },371    });372    const res = response as { ok?: boolean; clearSeconds?: number };373    if (filledTOTPField) {374      showToast("2FA code filled");375    } else if (alreadyWritten || res.ok) {376      // Don't render the live code into the toast — the page can read it from the377      // DOM and consume the one-time code (audit LOW). The code is already on the378      // clipboard; the toast confirms the copy and shows how long until the379      // clipboard self-clears (Addendum 2). 30 mirrors DEFAULT_CLEAR_SECONDS.380      showTotpCopyToast(res.clearSeconds ?? 30);381    } else {382      showToast("Could not copy TOTP — clipboard blocked");383    }384  }385386  return { filledTOTPField, gatePassed };387}388389async function fetchAutofillEntries(390  domain: string,391  includeAll = false,392  capability?: string393): Promise<{ entries: SelectorEntry[]; locked: boolean }> {394  const response = await chrome.runtime.sendMessage({395    type: "AUTOFILL_QUERY",396    payload: { domain, includeAll, capability },397  });398  const res = response as { ok: boolean; data?: SelectorEntry[]; error?: string };399  if (!res.ok && res.error === "vault_locked") {400    return { entries: [], locked: true };401  }402  return { entries: res.data ?? [], locked: false };403}404405async function fetchTOTPEntries(406  domain: string,407  capability?: string,408): Promise<{ entries: SelectorEntry[]; locked: boolean }> {409  const response = await chrome.runtime.sendMessage({410    type: "AUTOFILL_QUERY",411    payload: { domain, kind: "totp", capability },412  });413  const res = response as { ok: boolean; data?: SelectorEntry[]; error?: string };414  if (!res.ok && res.error === "vault_locked") {415    return { entries: [], locked: true };416  }417  return { entries: res.data ?? [], locked: false };418}419420421function resolveAutofillFieldType(422  el: HTMLInputElement,423  predictedType?: FieldPrediction["type"] | null424): "password" | "username" | "email" | null {425  if (426    predictedType === "password" ||427    predictedType === "username" ||428    predictedType === "email"429  ) {430    return predictedType;431  }432433  const detected = detectLoginFields().find((field) => field.el === el)?.type;434  if (detected && AUTOFILL_FIELD_TYPES.has(detected)) {435    return detected;436  }437438  const htmlType = el.type.toLowerCase();439  if (htmlType === "password") return "password";440  if (htmlType === "email") return "email";441  return null;442}443444async function openAutofillSelector(445  anchorField: HTMLInputElement,446  usernameEl: HTMLInputElement | null,447  passwordEl: HTMLInputElement | null,448  domainEntries: SelectorEntry[],449  loadSearchableEntries: () => Promise<SelectorEntry[]>,450  domain: string,451  identityKind: "email" | "username",452  emailEl?: HTMLInputElement | null,453  capability?: string,454): Promise<void> {455  // No saved entries for this site → signup/new-account mode.456  // Fetch vault identities for the identity-first surface and locate457  // the confirm-password field so "Copy & fill" can populate it too.458  const isSignup = domainEntries.length === 0;459  let savedIdentities: SavedIdentity[] | undefined;460  let confirmEl: HTMLInputElement | null = null;461  if (isSignup) {462    try {463      const idResp = await chrome.runtime.sendMessage({ type: "GET_IDENTITIES" }).catch(() => null) as464        { ok: boolean; data?: SavedIdentity[] } | null;465      if (idResp?.ok && Array.isArray(idResp.data)) savedIdentities = idResp.data;466    } catch { /* silent fallback */ }467468    const form = (passwordEl ?? usernameEl)?.closest("form") ?? document.body;469    const allPwInputs = Array.from(form.querySelectorAll<HTMLInputElement>("input[type='password']"));470    confirmEl = allPwInputs.find(471      (el) => el !== passwordEl && /confirm|repeat|verify/i.test(el.name + el.id + el.placeholder)472    ) ?? (allPwInputs.length >= 2 ? allPwInputs.find((el) => el !== passwordEl) ?? null : null);473  }474475  currentDismiss?.();476  currentAnchorField = anchorField;477  currentDismiss = showAutofillSelector(478    anchorField,479    domainEntries,480    async (id: string) => {481      currentDismiss = null;482      currentAnchorField = null;483      const entryResponse = await chrome.runtime.sendMessage({484        type: "GET_ENTRY_FOR_FILL",485        payload: { id, capability },486      });487       const entry = (entryResponse as { ok: boolean; data?: VaultEntry }).data;488       if (entry) {489         const { filledTOTPField, gatePassed } = await handleAutofill(anchorField, usernameEl, passwordEl, entry, emailEl);490         if (gatePassed) recordFillSuccess(anchorField, usernameEl, passwordEl, filledTOTPField);491        // Offer to remember the current site for this entry only if none of492        // its known domains (primary + additional) match — otherwise the493        // user already mapped it and the prompt would be noise.494        const pageDomain = location.hostname.replace(/^www\./, "");495        const entryDomains = new Set<string>();496        for (const u of [entry.url, ...(entry.additionalUrls ?? [])]) {497          try {498            if (u) entryDomains.add(new URL(u).hostname.replace(/^www\./, ""));499          } catch { /* ignore unparseable */ }500        }501        if (pageDomain && entryDomains.size > 0 && !entryDomains.has(pageDomain)) {502          showRememberSiteToast(pageDomain, entry.id);503        }504      }505    },506    {507      domain,508      capability,509      loadSearchableEntries,510      isSignup,511      identityKind,512      hasEmailField: !!emailEl,513      savedIdentities,514      onFillFields: (username, password, email) => {515        const form = (passwordEl ?? usernameEl)?.closest("form") as HTMLFormElement | null ?? null;516        if (!fillFields(usernameEl, passwordEl, username, password, form, getPageDomain(), emailEl, email)) return;517        if (password && confirmEl) setNativeValue(confirmEl, password);518        recordFillSuccess(anchorField, usernameEl, passwordEl);519      },520      onDismiss: () => { lastDismissedField = anchorField; startDismissLock(); },521    }522  );523}524525async function openTOTPSelector(526  anchorField: HTMLInputElement,527  otpDigitBoxes?: HTMLInputElement[],528  capability?: string,529): Promise<void> {530  if (!canOpen()) return;531  if (currentDismiss && currentAnchorField === anchorField) return;532  if (anchorField !== lastDismissedField) lastDismissedField = null;533  if (anchorField === lastDismissedField) return;534  if (wasAlreadyFilled(anchorField)) return;535536  const domain = getPageDomain();537  const result = await fetchTOTPEntries(domain, capability);538539  if (result.locked) {540    currentDismiss?.();541    currentAnchorField = anchorField;542    currentDismiss = showAutofillSelector(543      anchorField,544      [],545      () => {},546      {547        domain,548        locked: true,549        onUnlocked: () => void openTOTPSelector(anchorField),550        onDismiss: () => { lastDismissedField = anchorField; startDismissLock(); },551      }552    );553    return;554  }555556  if (result.entries.length === 0) {557    lastDismissedField = anchorField;558    startDismissLock();559    showToast("No 2FA entries for this site — add a code in Peach first");560    return;561  }562563  currentDismiss?.();564  currentAnchorField = anchorField;565  currentDismiss = showTOTPSelector(566    anchorField,567    result.entries,568    async (id: string) => {569      try {570        const entryResponse = await chrome.runtime.sendMessage({571          type: "GET_ENTRY_FOR_FILL",572          payload: { id, capability },573        }).catch(() => null) as { ok: boolean; data?: VaultEntry } | null;574        const entry = entryResponse?.ok ? entryResponse.data : undefined;575        const code = (entry as { totpCode?: string } | undefined)?.totpCode;576        if (!code) return;577        if (!fillAllowed(anchorField.closest("form"), getPageDomain())) return;578        if (otpDigitBoxes && otpDigitBoxes.length > 1) {579          fillOTPDigitBoxes(otpDigitBoxes, code);580        } else {581          setNativeValue(anchorField, code);582        }583        recordFillSuccess(anchorField);584        showToast("2FA code filled");585      } finally {586        currentDismiss = null;587        currentAnchorField = null;588      }589    },590    {591      domain,592      onDismiss: () => {593        lastDismissedField = anchorField;594        startDismissLock();595        currentDismiss = null;596        currentAnchorField = null;597      },598    }599  );600}601602603export /* @testable */ async function handleFieldInteraction(604  anchorField?: HTMLInputElement | null,605  explicitSummon = false,606  capability?: string607): Promise<void> {608  const field = anchorField ?? getDeepActiveInput();609  if (!field) return;610  if (!isVisible(field)) return;611612  // Passkey toast is visible — don't open the credential selector alongside it.613  if (passkeyToastActive) return;614615  // Layer 2: post-dismiss global lock. Catches rapid focus moves between616  // fields immediately after Escape/click-outside.617  if (!canOpen()) return;618619  // If a selector is already open for this exact field, don't flicker it.620  if (currentDismiss && currentAnchorField === field) return;621622  // If focus moved to a different field, the previous per-field dismiss lock623  // no longer applies.624  if (field !== lastDismissedField) lastDismissedField = null;625  // Layer 1: the user explicitly dismissed this field's selector — don't626  // reopen it until focus has genuinely moved away and come back.627  if (field === lastDismissedField) return;628629  // Fill-success lock: Peach already filled this form (or fired a fill630  // anywhere on the page within the grace window). Sites often refocus an631  // input on submit click, on validation, or on a transition to a success632  // state — none of those should re-open the popup.633  if (wasAlreadyFilled(field)) return;634635  // Prevent two concurrent calls for the same field (e.g. focusin + icon click636  // firing simultaneously — the second call would dismiss the first's selector).637  if (pendingInteractions.has(field)) return;638  pendingInteractions.add(field);639640  try {641    // Multi-digit OTP entry: a group of digit boxes opens one selector anchored642    // on the first box and fills every box at once — never one icon per box.643    // findOTPDigitBoxGroup covers maxlength=1 boxes; findOtpSignalingGroup644    // covers boxes that carry OTP signaling (autocomplete=one-time-code,645    // name/id/label matches otp/totp/2fa) but lack maxlength="1".646    const otpGroup = findOTPDigitBoxGroup(field) ?? findOtpSignalingGroup(field);647    if (otpGroup) {648      await openTOTPSelector(otpGroup[0]!, otpGroup, capability);649      return;650    }651652    if (isTOTPField(field)) {653      const formFields = detectLoginFields();654      if (!isLoginForm(formFields) && !isSignupForm(formFields)) {655        await openTOTPSelector(field, undefined, capability);656        return;657      }658    }659660    const fieldType = field.type.toLowerCase();661662    const mlPromise = contentMLDetector.predictBatch([field]).then((preds) => {663      return preds[0] ?? null;664    });665666    const mlPrediction = await new Promise<FieldPrediction | null>((resolve) => {667      const timeout = setTimeout(() => resolve(null), 150);668      mlPromise.then((pred) => {669        clearTimeout(timeout);670        resolve(pred);671      });672    });673674    if (passkeyToastActive) return;675676    if (!explicitSummon && fieldType !== "password" && mlPrediction && mlPrediction.type !== "username" && mlPrediction.type !== "email") {677      return;678    }679680    const autofillFieldType = resolveAutofillFieldType(field, mlPrediction?.type);681    if (autofillFieldType) {682      reattachListeners(field, autofillFieldType);683    }684685    const fields = detectLoginFields();686    const targets = resolveAutofillInteractionTargets(field, fields, explicitSummon);687    if (!targets.shouldOpen) {688      return;689    }690691    const domain = getPageDomain();692    const commandAuthorized = explicitSummon && capability !== undefined;693    const firstResult = await fetchAutofillEntries(694      domain,695      commandAuthorized,696      commandAuthorized ? capability : undefined,697    );698    if (passkeyToastActive) return;699700    // Vault is locked — show an inline unlock prompt.701    // Re-triggering after unlock is handled by the VAULT_UNLOCKED message so702    // there is no double-trigger race between onUnlocked and the broadcast.703    if (firstResult.locked) {704      currentDismiss?.();705      currentAnchorField = field;706      currentDismiss = showAutofillSelector(707        field,708        [],709        () => {},710        { domain, locked: true, onDismiss: () => { lastDismissedField = field; startDismissLock(); } }711      );712      return;713    }714715    const entries = firstResult.entries;716    // MV-2: the vault-wide list is NOT fetched here. It is loaded lazily,717    // only when the user activates the search affordance inside the inline718    // popup (an explicit gesture), via the thunk below. Passive form focus719    // never ships the full account inventory into the page's content-script720    // world — and never hands out the entry ids that made MV-1 a full-vault721    // primitive.722    const loadSearchableEntries = async (): Promise<SelectorEntry[]> =>723      commandAuthorized724        ? entries725        : (await fetchAutofillEntries(domain)).entries;726727    if (passkeyToastActive) return;728729    const pwField = fields.find((f) => f.type === "password");730    // For email-first flows there is no password field on this step — that is expected.731    if (!explicitSummon && !pwField && !isEmailFirstForm(fields)) return;732    const usernameEl = targets.usernameEl;733    const passwordEl = targets.passwordEl;734    const emailEl = targets.emailEl;735736    await openAutofillSelector(737      field,738      usernameEl,739      passwordEl,740      entries,741      loadSearchableEntries,742      domain,743      autofillFieldType === "email" ? "email" : "username",744      emailEl,745      commandAuthorized ? capability : undefined,746    );747  } finally {748    pendingInteractions.delete(field);749  }750}751752async function onFocusIn(e: Event): Promise<void> {753  // Submit-button focus: catch the brief refocus some sites do when the754  // user clicks the login/submit button. Without this guard, that focus755  // event reaches handleFieldInteraction → getDeepActiveInput, and on756  // pages where the button is also a labelled <input> we briefly attempt757  // to open the popup over the very button the user just clicked.758  if (isSubmitButton(e.target)) return;759  await handleFieldInteraction();760}761762function reattachListeners(763  el: HTMLInputElement,764  detectedType?: "password" | "username" | "email",765  contextFields?: ReturnType<typeof detectLoginFields>766): void {767  if (processedInputs.has(el)) return;768  if (!resolveAutofillFieldType(el, detectedType)) return;769  // Only inject icon when a credential form is present on the page770  const fields = contextFields ?? detectLoginFields();771  if (!isAnyCredentialForm(fields)) return;772773  const cleanup = injectFieldIcon(el, () => {774    currentDismiss?.();775    currentDismiss = null;776    lastDismissedField = null; // icon click is an explicit user open — clear per-field lock777    dismissLock = false; // ...and the global lock778    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }779    clearFillStateForExplicitSummon(el);780    el.focus({ preventScroll: true });781    void handleFieldInteraction(el, true);782  });783  processedInputs.set(el, cleanup);784}785786const debouncedReattach = debounce(() => {787  const allFields = detectLoginFields();788  if (!isAnyCredentialForm(allFields)) return;789  const newFields = allFields.filter(790    (f) => AUTOFILL_FIELD_TYPES.has(f.type) && !processedInputs.has(f.el)791  );792  for (const f of newFields) {793    reattachListeners(f.el, f.type, allFields);794  }795  // 200ms debounce — below this, Peach and the host page's reactive layer796  // fight over the same layout properties every frame on React/Vue/Angular797  // login forms (v1.4.14 regression, Projects.md §4.7). Do not lower.798}, 200);799800function setupMutationObserver(): void {801  const observer = new MutationObserver(debouncedReattach);802  observer.observe(document.body, {803    childList: true,804    subtree: true,805    attributes: true,806    attributeFilter: ["type", "autocomplete", "name", "id", "placeholder", "hidden"],807  });808}809810export /* @testable */ function initialScan(aggressionLevel = 0, isFinalPass = false) {811  const allFields = detectLoginFields();812  const hasKnownForm = isAnyCredentialForm(allFields);813814  if (aggressionLevel === 0 && !hasKnownForm) return;815816  const newFields = allFields.filter(817    (f) => AUTOFILL_FIELD_TYPES.has(f.type) && !processedInputs.has(f.el)818  );819820  for (const f of newFields) {821    reattachListeners(f.el, f.type, allFields);822  }823824  // Level 2, final pass: inject icon on any visible password field even if825  // the form-context gate in reattachListeners would normally skip it.826  if (aggressionLevel >= 2 && isFinalPass && newFields.length === 0) {827    const pwInputs = document.querySelectorAll<HTMLInputElement>('input[type="password"]');828    for (const el of pwInputs) {829      if (isVisible(el) && !processedInputs.has(el)) {830        const cleanup = injectFieldIcon(el, () => {831          currentDismiss?.();832          currentDismiss = null;833          lastDismissedField = null;834          dismissLock = false;835          if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }836          clearFillStateForExplicitSummon(el);837          el.focus({ preventScroll: true });838          void handleFieldInteraction(el, true);839        });840        processedInputs.set(el, cleanup);841      }842    }843  }844}845846// @testable seam — gives unit tests read/write access to module-private state847// without exposing it in the production API surface.848export const _testSeam = {849  getLastDismissedField(): HTMLInputElement | null { return lastDismissedField; },850  setLastDismissedField(f: HTMLInputElement | null): void { lastDismissedField = f; },851  isDismissLocked(): boolean { return dismissLock; },852  DISMISS_LOCK_MS,853} as const;854855// ── TOTP-only fields ───────────────────────────────────────────────────────856// After a username/password submission, many sites swap the whole form for a857// lone "verification code" input. The credential selector intentionally gates858// on login/signup forms, so TOTP fields need a narrow path of their own.859const processedTOTPInputs = new WeakMap<HTMLInputElement, () => void>();860861function hasLoginOrSignupForm(): boolean {862  const fields = detectLoginFields();863  return isAnyCredentialForm(fields);864}865866function injectTOTPFieldIcon(867  field: HTMLInputElement,868  otpDigitBoxes?: HTMLInputElement[]869): void {870  if (processedTOTPInputs.has(field)) return;871  const cleanup = injectFieldIcon(field, () => {872    currentDismiss?.();873    currentDismiss = null;874    currentAnchorField = null;875    lastDismissedField = null;876    dismissLock = false;877    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }878    clearFillStateForExplicitSummon(field);879    field.focus({ preventScroll: true });880    void openTOTPSelector(field, otpDigitBoxes);881  });882  processedTOTPInputs.set(field, cleanup);883}884885// A split-OTP group (4+ OTP-signaling boxes lacking maxlength="1") shows one886// icon on the first box, not one per box. Returns the anchor to inject on887// (group[0]) and its full group, or just the field itself when it's a lone888// TOTP input.889function resolveTOTPIconTarget(890  field: HTMLInputElement891): { anchor: HTMLInputElement; group?: HTMLInputElement[] } {892  const group = findOtpSignalingGroup(field);893  if (group) return { anchor: group[0]!, group };894  return { anchor: field };895}896897export /* @testable */ function scanTOTPFields(): void {898  if (hasLoginOrSignupForm()) return;899  const inputs = document.querySelectorAll<HTMLInputElement>("input");900  for (const input of inputs) {901    if (!isTOTPField(input)) continue;902    const { anchor, group } = resolveTOTPIconTarget(input);903    injectTOTPFieldIcon(anchor, group);904  }905}906907function setupTOTPAutofill(): void {908  setTimeout(scanTOTPFields, 0);909  setTimeout(scanTOTPFields, 500);910  setTimeout(scanTOTPFields, 1500);911912  const debouncedScan = debounce(scanTOTPFields, 200);913  new MutationObserver(debouncedScan).observe(document.body, {914    childList: true,915    subtree: true,916    attributes: true,917    attributeFilter: ["autocomplete", "name", "id", "placeholder", "hidden"],918  });919920  document.addEventListener("focusin", (e) => {921    const target = e.target;922    if (!(target instanceof HTMLInputElement)) return;923    if (hasLoginOrSignupForm()) return;924    if (!isTOTPField(target)) return;925    const { anchor, group } = resolveTOTPIconTarget(target);926    injectTOTPFieldIcon(anchor, group);927  }, true);928}929930document.addEventListener("focusin", onFocusIn);931932setupMutationObserver();933setupTOTPAutofill();934setupSaveDetection();935setupCardAutofill();936937// SPA navigation reset: the content script does not reload across in-app938// route changes (history.pushState, hash navigation, framework routers).939// When the URL changes we clear the page-level fill timestamp so the next940// page works normally; filledForms (a WeakSet) self-empties as old form941// elements leave the DOM. subtree:false because route swaps reliably942// mutate document.body's direct children — subtree:true would fire on943// every internal DOM update and cost us a re-check per mutation.944let lastObservedUrl = globalThis.location.href;945new MutationObserver(() => {946  const currentUrl = globalThis.location?.href;947  if (!currentUrl || currentUrl === lastObservedUrl) return;948  lastObservedUrl = currentUrl;949  pageFilledAt = null;950}).observe(document.body, { childList: true, subtree: false });951952// Async init: check recall map before running the initial scans so we can953// apply the right aggression level for domains the user has needed before.954(async () => {955  let aggressionLevel = 0;956  try {957    const resp = await chrome.runtime.sendMessage({ type: "GET_SETTINGS" });958    const s = (resp as { ok: boolean; data?: { manualSummonDomains?: Record<string, { summonCount: number }> } }).data;959    const domain = getPageDomain();960    const record = domain ? s?.manualSummonDomains?.[domain] : undefined;961    aggressionLevel = !record ? 0 : record.summonCount >= 2 ? 2 : 1;962  } catch { /* SW may be starting up; proceed with normal scan */ }963964  setTimeout(() => initialScan(aggressionLevel, false), 0);965  setTimeout(() => initialScan(aggressionLevel, false), 500);966  setTimeout(() => initialScan(aggressionLevel, true), 1500);967})();968969// ── Card autofill (State 7) ─────────────────────────────────────────970// Card forms get a parallel injection path. The login icon-injection gate971// in reattachListeners deliberately skips non-text fields, so we wire972// cards independently rather than retrofit AUTOFILL_FIELD_TYPES — keeping973// card detection contained makes the boundary easy to follow.974const processedCardInputs = new WeakMap<HTMLInputElement, () => void>();975let currentCardDismiss: (() => void) | null = null;976let currentCardAnchor: HTMLInputElement | null = null;977let lastDismissedCardField: HTMLInputElement | null = null;978979async function fetchSavedCards(capability?: string): Promise<CardSelectorEntry[]> {980  const resp = await chrome.runtime.sendMessage({981    type: "AUTOFILL_QUERY",982    payload: { domain: getPageDomain(), kind: "card", capability },983  }).catch(() => null);984  const r = resp as { ok: boolean; data?: CardSelectorEntry[] } | null;985  return r?.ok ? (r.data ?? []) : [];986}987988async function openCardSelector(anchor: HTMLInputElement, capability?: string): Promise<void> {989  if (!canOpen()) return;990  if (currentCardDismiss && currentCardAnchor === anchor) return;991  if (anchor === lastDismissedCardField) return;992  if (anchor !== lastDismissedCardField) lastDismissedCardField = null;993  if (wasAlreadyFilled(anchor)) return;994995  const cards = await fetchSavedCards(capability);996  if (cards.length === 0) return; // no saved cards → nothing to offer997998  const cardForm = detectCardForm();999  if (!cardForm?.number) return;10001001  currentCardDismiss?.();1002  currentCardAnchor = anchor;1003  currentCardDismiss = showCardSelector(1004    anchor,1005    cards,1006    {1007      domain: getPageDomain(),1008      capability,1009      onFill: (entry) => {1010        if (!cardForm) return;1011        fillCardForm(cardForm, {1012          cardNumber: entry.cardNumber ?? "",1013          expMonth: entry.expMonth ?? "",1014          expYear: entry.expYear ?? "",1015          cvc: entry.cvc ?? "",1016          cardholderName: entry.cardholderName ?? "",1017        });1018        // All four card field types share the same form — recording the1019        // number field's form is sufficient to suppress reopens on any of1020        // them via wasAlreadyFilled().1021        recordFillSuccess(cardForm.number, cardForm.cvc, cardForm.expiryCombo, cardForm.name);1022        currentCardDismiss = null;1023        currentCardAnchor = null;1024      },1025      onDismiss: () => {1026        lastDismissedCardField = anchor;1027        startDismissLock();1028        currentCardDismiss = null;1029        currentCardAnchor = null;1030      },1031    }1032  );1033}10341035function injectCardIcon(field: HTMLInputElement): void {1036  if (processedCardInputs.has(field)) return;1037  const cleanup = injectFieldIcon(field, () => {1038    currentCardDismiss?.();1039    currentCardDismiss = null;1040    lastDismissedCardField = null;1041    dismissLock = false;1042    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }1043    clearFillStateForExplicitSummon(field);1044    field.focus({ preventScroll: true });1045    void openCardSelector(field);1046  });1047  processedCardInputs.set(field, cleanup);1048}10491050function setupCardAutofill(): void {1051  function scan() {1052    const cardForm = detectCardForm();1053    if (!cardForm?.number) return;1054    if (!isVisible(cardForm.number)) return;1055    injectCardIcon(cardForm.number);1056  }10571058  // Initial detection sweep — same retry cadence as login fields so1059  // late-hydrating SPA checkout pages get caught.1060  setTimeout(scan, 0);1061  setTimeout(scan, 500);1062  setTimeout(scan, 1500);10631064  // Re-scan on DOM mutation (separate from the login MutationObserver1065  // because card forms typically appear on a single navigation event,1066  // not field-by-field — coarser observation is sufficient here).1067  let pending = false;1068  new MutationObserver(() => {1069    if (pending) return;1070    pending = true;1071    setTimeout(() => { pending = false; scan(); }, 200);1072  }).observe(document.body, { childList: true, subtree: true });10731074  // Field-focus path: on focus of a cc-number input, ensure icon is1075  // present and consider opening the selector when the user explicitly1076  // clicks into the card number field.1077  document.addEventListener("focusin", (e) => {1078    const target = e.target;1079    if (!(target instanceof HTMLInputElement)) return;1080    const cardForm = detectCardForm();1081    if (cardForm?.number === target) {1082      injectCardIcon(target);1083    }1084  }, true);1085}10861087chrome.runtime.onMessage.addListener((msg, sender, sendResponse) => {1088  // Ignore anything not originating from our own background/service worker.1089  if (sender.id !== chrome.runtime.id) return;1090  if (msg?.type === "GET_SITE_PASSWORD_POLICY") {1091    const policy = detectPasswordPolicy();1092    sendResponse({ ok: true, data: policy });1093    return true;1094  }1095  if (msg?.type === "PING") {1096    sendResponse({ ok: true });1097    return true;1098  }1099  if (msg?.type === "SUMMON_AUTOFILL") {1100    const source = (msg as { type: string; source?: string; capability?: string }).source;1101    const capability = (msg as { capability?: string }).capability;1102    const isShortcut = source === "shortcut";1103    const isPasskeyUnlock = source === "passkey-unlock";11041105    const activeInput = getDeepActiveInput();1106    const fields = detectLoginFields();1107    const hasForm = isAnyCredentialForm(fields);1108    const cardForm = detectCardForm();11091110    if (hasForm) {1111      // Prefer the currently focused field if it's a login field, otherwise1112      // fall back to the first password field, then username/email.1113      const inForm = activeInput && fields.some(f => f.el === activeInput);1114      const target = inForm1115        ? activeInput1116        : (fields.find(f => f.type === "password")?.el1117            ?? fields.find(f => f.type === "username" || f.type === "email")?.el);1118      if (target) {1119        // Explicit user summon (shortcut or extension button) — bypass all1120        // suppression layers. The user is asking for the popup right now.1121        clearFillStateForExplicitSummon(target);1122        dismissLock = false;1123        if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }1124        lastDismissedField = null;1125        void handleFieldInteraction(target, true, capability);1126      }1127    } else if (isShortcut && cardForm?.number) {1128      clearFillStateForExplicitSummon(cardForm.number);1129      dismissLock = false;1130      if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }1131      lastDismissedCardField = null;1132      void openCardSelector(cardForm.number, capability);1133    } else if (isPasskeyUnlock) {1134      // Vault is locked during a passkey GET request. Show the inline unlock1135      // prompt anchored to whatever element is focused on the page (typically1136      // the passkey/sign-in button the user just tapped).1137      const anchor = (document.activeElement instanceof HTMLElement && document.activeElement !== document.body)1138        ? document.activeElement as unknown as HTMLInputElement1139        : null;1140      if (anchor) {1141        currentDismiss?.();1142        currentAnchorField = null;1143        passkeySummonActive = true;1144        currentDismiss = showAutofillSelector(anchor, [], () => {}, {1145          domain: getPageDomain(),1146          locked: true,1147          onDismiss: () => { passkeySummonActive = false; },1148        });1149      }1150    } else if (isShortcut) {1151      // Shortcut on a page with no login form — show clipboard-copy search mode.1152      showSearchPalette(capability);1153    }11541155    // Record this domain for the recall system when triggered via shortcut.1156    if (isShortcut) {1157      const domain = getPageDomain();1158      if (domain) {1159        chrome.runtime.sendMessage({ type: "RECORD_MANUAL_SUMMON", payload: { domain } }).catch(() => {});1160      }1161    }11621163    sendResponse({ ok: hasForm || Boolean(cardForm?.number) || isShortcut || isPasskeyUnlock });1164    return true;1165  }1166  if (msg?.type === "PASSKEY_PRO_GATE") {1167    // Background rejected a passkey request for a free user. Show State 111168    // so they know what happened and can choose to upgrade.1169    showPasskeyProGate();1170    sendResponse({ ok: true });1171    return true;1172  }1173  if (msg?.type === "SHOW_PASSKEY_TOAST") {1174    // Block autofill selector for the lifetime of the toast and dismiss anything open.1175    passkeyToastActive = true;1176    if (currentDismiss) {1177      currentDismiss();1178      currentDismiss = null;1179      currentAnchorField = null;1180    }1181    return false; // inject.tsx owns the toast and calls sendResponse1182  }1183  if (msg?.type === "DISMISS_PASSKEY_TOAST") {1184    passkeyToastActive = false;1185    return false; // inject.tsx handles the actual dismissal1186  }1187  if (msg?.type === "VAULT_UNLOCKED") {1188    if (passkeySummonActive) {1189      // This unlock was for a pending passkey GET request. Just dismiss the1190      // inline popup — the passkey approval toast takes over from here.1191      passkeySummonActive = false;1192      if (currentDismiss) {1193        currentDismiss();1194        currentDismiss = null;1195        currentAnchorField = null;1196      }1197      sendResponse({ ok: true });1198      return true;1199    }1200    // Normal autofill path: close the locked-state prompt and re-open with1201    // fresh entry data at the same anchor field.1202    const savedField = currentAnchorField;1203    if (currentDismiss) {1204      currentDismiss();1205      currentDismiss = null;1206      currentAnchorField = null;1207    }1208    void handleFieldInteraction(savedField ?? undefined);1209    sendResponse({ ok: true });1210    return true;1211  }1212  return true;1213});12141215// inject.tsx posts this when the passkey toast closes (approve, deny, or timeout)1216// so we know it's safe to allow autofill again.1217window.addEventListener("message", (e: MessageEvent) => {1218  // Reject postMessages from cross-frame senders — only the same window's1219  // injected toast may flip this flag.1220  if (e.source !== window) return;1221  const d = e.data as { source?: string; type?: string } | undefined;1222  if (d?.source === "peach-passkey-toast" && d?.type === "toast-closed") {1223    passkeyToastActive = false;1224  }1225});12261227// ── Firefox passkey detection bridge (legacy observer path) ─────────────1228//1229// Pre-v2.12.0 the MAIN-world `passkeys-firefox.ts` was an observer — it1230// emitted `peach-passkey-firefox` postMessages so this content script could1231// surface State 12 (an inline "Save passkey to Peach" offer). v2.12.01232// replaced the observer with a full interception proxy (the page never1233// reaches a real navigator.credentials.create on Firefox anymore), and the1234// approval UI is opened by the background as part of the ceremony itself.1235// When the proxy is active the offer would be redundant noise, so the1236// listener gates on the flag. Once the proxy is removed (Firefox ships1237// webAuthenticationProxy) this whole block goes too.1238if (!FIREFOX_USE_CONTENT_SCRIPT_PROXY) {1239  let lastPasskeyOfferAt = 0;1240  const PASSKEY_OFFER_COOLDOWN_MS = 30_000;12411242  window.addEventListener("message", (event: MessageEvent) => {1243    if (event.source !== window) return;1244    const data = event.data as { source?: string; type?: string; rpId?: string; rpName?: string; userName?: string; userDisplayName?: string } | undefined;1245    if (!data || data.source !== "peach-passkey-firefox") return;1246    if (detectBrowser() !== "firefox") return;1247    if (data.type !== "create") return;12481249    // Cooldown: a single page interaction can fire multiple credentials.create1250    // calls. Show the offer at most once per 30 seconds per page session.1251    const now = Date.now();1252    if (now - lastPasskeyOfferAt < PASSKEY_OFFER_COOLDOWN_MS) return;1253    lastPasskeyOfferAt = now;12541255    const domain = location.hostname.replace(/^www\./, "");1256    chrome.runtime.sendMessage({1257      type: "GET_PASSKEY_OFFER_DECLINED",1258      payload: { domain },1259    }).then((res: { ok: boolean; data?: boolean } | undefined) => {1260      if (res?.data === true) return;1261      const rpId = data.rpId ?? domain;1262      showPasskeyRegistrationOffer({1263        rpId,1264        rpName: data.rpName,1265        userName: data.userName,1266        userDisplayName: data.userDisplayName,1267      });1268    }).catch(() => {});1269  });1270}12711272// Surface State 11 (passkey-available) only when it adds value:1273//   - Cross-browser entry: Chrome passkey on Firefox or vice versa — neither1274//     browser will auto-route, so the banner explains the re-register need.1275//   - Firefox + same-browser entry: Firefox has no equivalent of1276//     webAuthenticationProxy, so without a banner the user has no signal that1277//     Peach is the source.1278// On Chrome with a same-browser entry: skip — webAuthenticationProxy handles1279// the page's own credentials.get transparently and the popup approval view1280// already surfaces it. A banner here would just be noise.1281//1282// Dedupe across navigation: each navigation re-injects this content script.1283// chrome.storage.session keyed by domain is the natural per-tab/per-session1284// memory; session storage clears when the user closes the browser.1285{1286  function checkPasskeyAvailability() {1287    const domain = location.hostname.replace(/^www\./, "");1288    if (!domain) return;1289    const sessionKey = `peach_state11_shown:${domain}`;1290    chrome.storage.session?.get(sessionKey).then((stored) => {1291      if (stored && (stored as Record<string, unknown>)[sessionKey]) return;1292      chrome.runtime.sendMessage({1293        type: "GET_PASSKEY_FOR_DOMAIN",1294        payload: { domain },1295      }).then((res: { ok: boolean; data?: { rpId: string; userName: string; browser?: "chrome" | "firefox" } | null } | undefined) => {1296        const data = res?.data;1297        if (!data) return;1298        const current = detectBrowser();1299        const isCrossBrowser =1300          data.browser && current !== "unknown" && data.browser !== current;1301        const valuableOnFirefox = current === "firefox";1302        if (!isCrossBrowser && !valuableOnFirefox) return;1303        chrome.storage.session?.set({ [sessionKey]: Date.now() }).catch(() => {});1304        showPasskeyAvailable({1305          rpId: data.rpId,1306          userName: data.userName,1307          fromBrowser: data.browser,1308          currentBrowser: current,1309        });1310      }).catch(() => {});1311    }).catch(() => {});1312  }13131314  // Defer until DOM is interactive — content_scripts run at document_idle but1315  // some pages still mutate visibly afterwards. A short delay also avoids1316  // surfacing the State 11 toast while the user is in the middle of typing.1317  if (document.readyState === "loading") {1318    document.addEventListener("DOMContentLoaded", () => setTimeout(checkPasskeyAvailability, 800));1319  } else {1320    setTimeout(checkPasskeyAvailability, 800);1321  }1322}