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 { fillCardForm, fillFields, fillOTPDigitBoxes, fillTOTPCode, setNativeValue, checkFormAction } 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(): 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, explicitSummon: true } });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  // MV-2: the summon palette is an explicit user gesture (keyboard shortcut /288  // toolbar icon), so it may load the vault-wide inventory.289  fetchAutofillEntries(getPageDomain(), true, true).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  fillFields(usernameEl, passwordEl, entry.username ?? "", entry.password ?? "", form, pageDomain, emailEl, emailValue);326  const gatePassed = !form || !pageDomain || checkFormAction(form, pageDomain);327  let filledTOTPField: HTMLInputElement | null = null;328329  if (entry.canary && gatePassed) {330    chrome.runtime.sendMessage({331      type: "FIRE_CANARY_PING",332      payload: {333        webhookUrl: entry.canary.webhookUrl,334        entryTitle: entry.title,335        trigger: "autofilled",336      },337    }).catch(() => {});338    chrome.runtime.sendMessage({339      type: "UPDATE_ENTRY",340      payload: {341        id: entry.id,342        patch: {343          canary: {344            ...entry.canary,345            lastPinged: Date.now(),346            pingCount: (entry.canary.pingCount ?? 0) + 1,347          },348        },349      },350    }).catch(() => {});351  }352353  // The background sends a freshly-generated 6-digit code (totpCode), never the354  // base32 seed (SEV-3-C). Fill the code straight in.355  const totpCode = (entry as { totpCode?: string }).totpCode;356  if (totpCode && gatePassed) {357    const code = totpCode;358    const totpField = passwordEl ? findSameLoginTOTPField(passwordEl) : null;359    if (fillTOTPCode(totpField, code, form, pageDomain)) {360      filledTOTPField = totpField;361    }362    let alreadyWritten = false;363    try {364      await navigator.clipboard.writeText(code);365      alreadyWritten = true;366    } catch (err) {367      console.warn("[Peach] clipboard write denied:", err);368    }369    const response = await chrome.runtime.sendMessage({370      type: "COPY",371      payload: { text: code, label: "TOTP", alreadyWritten },372    });373    const res = response as { ok?: boolean; clearSeconds?: number };374    if (filledTOTPField) {375      showToast("2FA code filled");376    } else if (alreadyWritten || res.ok) {377      // Don't render the live code into the toast — the page can read it from the378      // DOM and consume the one-time code (audit LOW). The code is already on the379      // clipboard; the toast confirms the copy and shows how long until the380      // clipboard self-clears (Addendum 2). 30 mirrors DEFAULT_CLEAR_SECONDS.381      showTotpCopyToast(res.clearSeconds ?? 30);382    } else {383      showToast("Could not copy TOTP — clipboard blocked");384    }385  }386387  return { filledTOTPField, gatePassed };388}389390async function fetchAutofillEntries(391  domain: string,392  includeAll = false,393  userGesture = false394): Promise<{ entries: SelectorEntry[]; locked: boolean }> {395  const response = await chrome.runtime.sendMessage({396    type: "AUTOFILL_QUERY",397    payload: { domain, includeAll, userGesture },398  });399  const res = response as { ok: boolean; data?: SelectorEntry[]; error?: string };400  if (!res.ok && res.error === "vault_locked") {401    return { entries: [], locked: true };402  }403  return { entries: res.data ?? [], locked: false };404}405406async function fetchTOTPEntries(407  domain: string408): Promise<{ entries: SelectorEntry[]; locked: boolean }> {409  const response = await chrome.runtime.sendMessage({410    type: "AUTOFILL_QUERY",411    payload: { domain, kind: "totp" },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 | null453): Promise<void> {454  // No saved entries for this site → signup/new-account mode.455  // Fetch vault identities for the identity-first surface and locate456  // the confirm-password field so "Copy & fill" can populate it too.457  const isSignup = domainEntries.length === 0;458  let savedIdentities: SavedIdentity[] | undefined;459  let confirmEl: HTMLInputElement | null = null;460  if (isSignup) {461    try {462      const idResp = await chrome.runtime.sendMessage({ type: "GET_IDENTITIES" }).catch(() => null) as463        { ok: boolean; data?: SavedIdentity[] } | null;464      if (idResp?.ok && Array.isArray(idResp.data)) savedIdentities = idResp.data;465    } catch { /* silent fallback */ }466467    const form = (passwordEl ?? usernameEl)?.closest("form") ?? document.body;468    const allPwInputs = Array.from(form.querySelectorAll<HTMLInputElement>("input[type='password']"));469    confirmEl = allPwInputs.find(470      (el) => el !== passwordEl && /confirm|repeat|verify/i.test(el.name + el.id + el.placeholder)471    ) ?? (allPwInputs.length >= 2 ? allPwInputs.find((el) => el !== passwordEl) ?? null : null);472  }473474  currentDismiss?.();475  currentAnchorField = anchorField;476  currentDismiss = showAutofillSelector(477    anchorField,478    domainEntries,479    async (id: string) => {480      currentDismiss = null;481      currentAnchorField = null;482      const entryResponse = await chrome.runtime.sendMessage({483        type: "GET_ENTRY_FOR_FILL",484        payload: { id },485      });486       const entry = (entryResponse as { ok: boolean; data?: VaultEntry }).data;487       if (entry) {488         const { filledTOTPField, gatePassed } = await handleAutofill(anchorField, usernameEl, passwordEl, entry, emailEl);489         if (gatePassed) recordFillSuccess(anchorField, usernameEl, passwordEl, filledTOTPField);490        // Offer to remember the current site for this entry only if none of491        // its known domains (primary + additional) match — otherwise the492        // user already mapped it and the prompt would be noise.493        const pageDomain = location.hostname.replace(/^www\./, "");494        const entryDomains = new Set<string>();495        for (const u of [entry.url, ...(entry.additionalUrls ?? [])]) {496          try {497            if (u) entryDomains.add(new URL(u).hostname.replace(/^www\./, ""));498          } catch { /* ignore unparseable */ }499        }500        if (pageDomain && entryDomains.size > 0 && !entryDomains.has(pageDomain)) {501          showRememberSiteToast(pageDomain, entry.id);502        }503      }504    },505    {506      domain,507      loadSearchableEntries,508      isSignup,509      identityKind,510      hasEmailField: !!emailEl,511      savedIdentities,512      onFillFields: (username, password, email) => {513        const form = (passwordEl ?? usernameEl)?.closest("form") as HTMLFormElement | null ?? null;514        fillFields(usernameEl, passwordEl, username, password, form, getPageDomain(), emailEl, email);515        if (password && confirmEl) setNativeValue(confirmEl, password);516        recordFillSuccess(anchorField, usernameEl, passwordEl);517      },518      onDismiss: () => { lastDismissedField = anchorField; startDismissLock(); },519    }520  );521}522523async function openTOTPSelector(anchorField: HTMLInputElement, otpDigitBoxes?: HTMLInputElement[]): Promise<void> {524  if (!canOpen()) return;525  if (currentDismiss && currentAnchorField === anchorField) return;526  if (anchorField !== lastDismissedField) lastDismissedField = null;527  if (anchorField === lastDismissedField) return;528  if (wasAlreadyFilled(anchorField)) return;529530  const domain = getPageDomain();531  const result = await fetchTOTPEntries(domain);532533  if (result.locked) {534    currentDismiss?.();535    currentAnchorField = anchorField;536    currentDismiss = showAutofillSelector(537      anchorField,538      [],539      () => {},540      {541        domain,542        locked: true,543        onUnlocked: () => void openTOTPSelector(anchorField),544        onDismiss: () => { lastDismissedField = anchorField; startDismissLock(); },545      }546    );547    return;548  }549550  if (result.entries.length === 0) {551    lastDismissedField = anchorField;552    startDismissLock();553    showToast("No 2FA entries for this site — add a code in Peach first");554    return;555  }556557  currentDismiss?.();558  currentAnchorField = anchorField;559  currentDismiss = showTOTPSelector(560    anchorField,561    result.entries,562    async (id: string) => {563      try {564        const entryResponse = await chrome.runtime.sendMessage({565          type: "GET_ENTRY_FOR_FILL",566          payload: { id },567        }).catch(() => null) as { ok: boolean; data?: VaultEntry } | null;568        const entry = entryResponse?.ok ? entryResponse.data : undefined;569        const code = (entry as { totpCode?: string } | undefined)?.totpCode;570        if (!code) return;571        if (otpDigitBoxes && otpDigitBoxes.length > 1) {572          fillOTPDigitBoxes(otpDigitBoxes, code);573        } else {574          setNativeValue(anchorField, code);575        }576        recordFillSuccess(anchorField);577        showToast("2FA code filled");578      } finally {579        currentDismiss = null;580        currentAnchorField = null;581      }582    },583    {584      domain,585      onDismiss: () => {586        lastDismissedField = anchorField;587        startDismissLock();588        currentDismiss = null;589        currentAnchorField = null;590      },591    }592  );593}594595596export /* @testable */ async function handleFieldInteraction(597  anchorField?: HTMLInputElement | null,598  explicitSummon = false599): Promise<void> {600  const field = anchorField ?? getDeepActiveInput();601  if (!field) return;602  if (!isVisible(field)) return;603604  // Passkey toast is visible — don't open the credential selector alongside it.605  if (passkeyToastActive) return;606607  // Layer 2: post-dismiss global lock. Catches rapid focus moves between608  // fields immediately after Escape/click-outside.609  if (!canOpen()) return;610611  // If a selector is already open for this exact field, don't flicker it.612  if (currentDismiss && currentAnchorField === field) return;613614  // If focus moved to a different field, the previous per-field dismiss lock615  // no longer applies.616  if (field !== lastDismissedField) lastDismissedField = null;617  // Layer 1: the user explicitly dismissed this field's selector — don't618  // reopen it until focus has genuinely moved away and come back.619  if (field === lastDismissedField) return;620621  // Fill-success lock: Peach already filled this form (or fired a fill622  // anywhere on the page within the grace window). Sites often refocus an623  // input on submit click, on validation, or on a transition to a success624  // state — none of those should re-open the popup.625  if (wasAlreadyFilled(field)) return;626627  // Prevent two concurrent calls for the same field (e.g. focusin + icon click628  // firing simultaneously — the second call would dismiss the first's selector).629  if (pendingInteractions.has(field)) return;630  pendingInteractions.add(field);631632  try {633    // Multi-digit OTP entry: a group of digit boxes opens one selector anchored634    // on the first box and fills every box at once — never one icon per box.635    // findOTPDigitBoxGroup covers maxlength=1 boxes; findOtpSignalingGroup636    // covers boxes that carry OTP signaling (autocomplete=one-time-code,637    // name/id/label matches otp/totp/2fa) but lack maxlength="1".638    const otpGroup = findOTPDigitBoxGroup(field) ?? findOtpSignalingGroup(field);639    if (otpGroup) {640      await openTOTPSelector(otpGroup[0]!, otpGroup);641      return;642    }643644    if (isTOTPField(field)) {645      const formFields = detectLoginFields();646      if (!isLoginForm(formFields) && !isSignupForm(formFields)) {647        await openTOTPSelector(field);648        return;649      }650    }651652    const fieldType = field.type.toLowerCase();653654    const mlPromise = contentMLDetector.predictBatch([field]).then((preds) => {655      return preds[0] ?? null;656    });657658    const mlPrediction = await new Promise<FieldPrediction | null>((resolve) => {659      const timeout = setTimeout(() => resolve(null), 150);660      mlPromise.then((pred) => {661        clearTimeout(timeout);662        resolve(pred);663      });664    });665666    if (passkeyToastActive) return;667668    if (!explicitSummon && fieldType !== "password" && mlPrediction && mlPrediction.type !== "username" && mlPrediction.type !== "email") {669      return;670    }671672    const autofillFieldType = resolveAutofillFieldType(field, mlPrediction?.type);673    if (autofillFieldType) {674      reattachListeners(field, autofillFieldType);675    }676677    const fields = detectLoginFields();678    const targets = resolveAutofillInteractionTargets(field, fields, explicitSummon);679    if (!targets.shouldOpen) {680      return;681    }682683    const domain = getPageDomain();684    const firstResult = await fetchAutofillEntries(domain);685    if (passkeyToastActive) return;686687    // Vault is locked — show an inline unlock prompt.688    // Re-triggering after unlock is handled by the VAULT_UNLOCKED message so689    // there is no double-trigger race between onUnlocked and the broadcast.690    if (firstResult.locked) {691      currentDismiss?.();692      currentAnchorField = field;693      currentDismiss = showAutofillSelector(694        field,695        [],696        () => {},697        { domain, locked: true, onDismiss: () => { lastDismissedField = field; startDismissLock(); } }698      );699      return;700    }701702    const entries = firstResult.entries;703    // MV-2: the vault-wide list is NOT fetched here. It is loaded lazily,704    // only when the user activates the search affordance inside the inline705    // popup (an explicit gesture), via the thunk below. Passive form focus706    // never ships the full account inventory into the page's content-script707    // world — and never hands out the entry ids that made MV-1 a full-vault708    // primitive.709    const loadSearchableEntries = async (): Promise<SelectorEntry[]> =>710      (await fetchAutofillEntries(domain, true, true)).entries;711712    if (passkeyToastActive) return;713714    const pwField = fields.find((f) => f.type === "password");715    // For email-first flows there is no password field on this step — that is expected.716    if (!explicitSummon && !pwField && !isEmailFirstForm(fields)) return;717    const usernameEl = targets.usernameEl;718    const passwordEl = targets.passwordEl;719    const emailEl = targets.emailEl;720721    await openAutofillSelector(722      field,723      usernameEl,724      passwordEl,725      entries,726      loadSearchableEntries,727      domain,728      autofillFieldType === "email" ? "email" : "username",729      emailEl,730    );731  } finally {732    pendingInteractions.delete(field);733  }734}735736async function onFocusIn(e: Event): Promise<void> {737  // Submit-button focus: catch the brief refocus some sites do when the738  // user clicks the login/submit button. Without this guard, that focus739  // event reaches handleFieldInteraction → getDeepActiveInput, and on740  // pages where the button is also a labelled <input> we briefly attempt741  // to open the popup over the very button the user just clicked.742  if (isSubmitButton(e.target)) return;743  await handleFieldInteraction();744}745746function reattachListeners(747  el: HTMLInputElement,748  detectedType?: "password" | "username" | "email",749  contextFields?: ReturnType<typeof detectLoginFields>750): void {751  if (processedInputs.has(el)) return;752  if (!resolveAutofillFieldType(el, detectedType)) return;753  // Only inject icon when a credential form is present on the page754  const fields = contextFields ?? detectLoginFields();755  if (!isAnyCredentialForm(fields)) return;756757  const cleanup = injectFieldIcon(el, () => {758    currentDismiss?.();759    currentDismiss = null;760    lastDismissedField = null; // icon click is an explicit user open — clear per-field lock761    dismissLock = false; // ...and the global lock762    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }763    clearFillStateForExplicitSummon(el);764    el.focus({ preventScroll: true });765    void handleFieldInteraction(el, true);766  });767  processedInputs.set(el, cleanup);768}769770const debouncedReattach = debounce(() => {771  const allFields = detectLoginFields();772  if (!isAnyCredentialForm(allFields)) return;773  const newFields = allFields.filter(774    (f) => AUTOFILL_FIELD_TYPES.has(f.type) && !processedInputs.has(f.el)775  );776  for (const f of newFields) {777    reattachListeners(f.el, f.type, allFields);778  }779  // 200ms debounce — below this, Peach and the host page's reactive layer780  // fight over the same layout properties every frame on React/Vue/Angular781  // login forms (v1.4.14 regression, Projects.md §4.7). Do not lower.782}, 200);783784function setupMutationObserver(): void {785  const observer = new MutationObserver(debouncedReattach);786  observer.observe(document.body, {787    childList: true,788    subtree: true,789    attributes: true,790    attributeFilter: ["type", "autocomplete", "name", "id", "placeholder", "hidden"],791  });792}793794export /* @testable */ function initialScan(aggressionLevel = 0, isFinalPass = false) {795  const allFields = detectLoginFields();796  const hasKnownForm = isAnyCredentialForm(allFields);797798  if (aggressionLevel === 0 && !hasKnownForm) return;799800  const newFields = allFields.filter(801    (f) => AUTOFILL_FIELD_TYPES.has(f.type) && !processedInputs.has(f.el)802  );803804  for (const f of newFields) {805    reattachListeners(f.el, f.type, allFields);806  }807808  // Level 2, final pass: inject icon on any visible password field even if809  // the form-context gate in reattachListeners would normally skip it.810  if (aggressionLevel >= 2 && isFinalPass && newFields.length === 0) {811    const pwInputs = document.querySelectorAll<HTMLInputElement>('input[type="password"]');812    for (const el of pwInputs) {813      if (isVisible(el) && !processedInputs.has(el)) {814        const cleanup = injectFieldIcon(el, () => {815          currentDismiss?.();816          currentDismiss = null;817          lastDismissedField = null;818          dismissLock = false;819          if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }820          clearFillStateForExplicitSummon(el);821          el.focus({ preventScroll: true });822          void handleFieldInteraction(el, true);823        });824        processedInputs.set(el, cleanup);825      }826    }827  }828}829830// @testable seam — gives unit tests read/write access to module-private state831// without exposing it in the production API surface.832export const _testSeam = {833  getLastDismissedField(): HTMLInputElement | null { return lastDismissedField; },834  setLastDismissedField(f: HTMLInputElement | null): void { lastDismissedField = f; },835  isDismissLocked(): boolean { return dismissLock; },836  DISMISS_LOCK_MS,837} as const;838839// ── TOTP-only fields ───────────────────────────────────────────────────────840// After a username/password submission, many sites swap the whole form for a841// lone "verification code" input. The credential selector intentionally gates842// on login/signup forms, so TOTP fields need a narrow path of their own.843const processedTOTPInputs = new WeakMap<HTMLInputElement, () => void>();844845function hasLoginOrSignupForm(): boolean {846  const fields = detectLoginFields();847  return isAnyCredentialForm(fields);848}849850function injectTOTPFieldIcon(851  field: HTMLInputElement,852  otpDigitBoxes?: HTMLInputElement[]853): void {854  if (processedTOTPInputs.has(field)) return;855  const cleanup = injectFieldIcon(field, () => {856    currentDismiss?.();857    currentDismiss = null;858    currentAnchorField = null;859    lastDismissedField = null;860    dismissLock = false;861    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }862    clearFillStateForExplicitSummon(field);863    field.focus({ preventScroll: true });864    void openTOTPSelector(field, otpDigitBoxes);865  });866  processedTOTPInputs.set(field, cleanup);867}868869// A split-OTP group (4+ OTP-signaling boxes lacking maxlength="1") shows one870// icon on the first box, not one per box. Returns the anchor to inject on871// (group[0]) and its full group, or just the field itself when it's a lone872// TOTP input.873function resolveTOTPIconTarget(874  field: HTMLInputElement875): { anchor: HTMLInputElement; group?: HTMLInputElement[] } {876  const group = findOtpSignalingGroup(field);877  if (group) return { anchor: group[0]!, group };878  return { anchor: field };879}880881export /* @testable */ function scanTOTPFields(): void {882  if (hasLoginOrSignupForm()) return;883  const inputs = document.querySelectorAll<HTMLInputElement>("input");884  for (const input of inputs) {885    if (!isTOTPField(input)) continue;886    const { anchor, group } = resolveTOTPIconTarget(input);887    injectTOTPFieldIcon(anchor, group);888  }889}890891function setupTOTPAutofill(): void {892  setTimeout(scanTOTPFields, 0);893  setTimeout(scanTOTPFields, 500);894  setTimeout(scanTOTPFields, 1500);895896  const debouncedScan = debounce(scanTOTPFields, 200);897  new MutationObserver(debouncedScan).observe(document.body, {898    childList: true,899    subtree: true,900    attributes: true,901    attributeFilter: ["autocomplete", "name", "id", "placeholder", "hidden"],902  });903904  document.addEventListener("focusin", (e) => {905    const target = e.target;906    if (!(target instanceof HTMLInputElement)) return;907    if (hasLoginOrSignupForm()) return;908    if (!isTOTPField(target)) return;909    const { anchor, group } = resolveTOTPIconTarget(target);910    injectTOTPFieldIcon(anchor, group);911  }, true);912}913914document.addEventListener("focusin", onFocusIn);915916setupMutationObserver();917setupTOTPAutofill();918setupSaveDetection();919setupCardAutofill();920921// SPA navigation reset: the content script does not reload across in-app922// route changes (history.pushState, hash navigation, framework routers).923// When the URL changes we clear the page-level fill timestamp so the next924// page works normally; filledForms (a WeakSet) self-empties as old form925// elements leave the DOM. subtree:false because route swaps reliably926// mutate document.body's direct children — subtree:true would fire on927// every internal DOM update and cost us a re-check per mutation.928let lastObservedUrl = globalThis.location.href;929new MutationObserver(() => {930  const currentUrl = globalThis.location?.href;931  if (!currentUrl || currentUrl === lastObservedUrl) return;932  lastObservedUrl = currentUrl;933  pageFilledAt = null;934}).observe(document.body, { childList: true, subtree: false });935936// Async init: check recall map before running the initial scans so we can937// apply the right aggression level for domains the user has needed before.938(async () => {939  let aggressionLevel = 0;940  try {941    const resp = await chrome.runtime.sendMessage({ type: "GET_SETTINGS" });942    const s = (resp as { ok: boolean; data?: { manualSummonDomains?: Record<string, { summonCount: number }> } }).data;943    const domain = getPageDomain();944    const record = domain ? s?.manualSummonDomains?.[domain] : undefined;945    aggressionLevel = !record ? 0 : record.summonCount >= 2 ? 2 : 1;946  } catch { /* SW may be starting up; proceed with normal scan */ }947948  setTimeout(() => initialScan(aggressionLevel, false), 0);949  setTimeout(() => initialScan(aggressionLevel, false), 500);950  setTimeout(() => initialScan(aggressionLevel, true), 1500);951})();952953// ── Card autofill (State 7) ─────────────────────────────────────────954// Card forms get a parallel injection path. The login icon-injection gate955// in reattachListeners deliberately skips non-text fields, so we wire956// cards independently rather than retrofit AUTOFILL_FIELD_TYPES — keeping957// card detection contained makes the boundary easy to follow.958const processedCardInputs = new WeakMap<HTMLInputElement, () => void>();959let currentCardDismiss: (() => void) | null = null;960let currentCardAnchor: HTMLInputElement | null = null;961let lastDismissedCardField: HTMLInputElement | null = null;962963async function fetchSavedCards(): Promise<CardSelectorEntry[]> {964  const resp = await chrome.runtime.sendMessage({965    type: "AUTOFILL_QUERY",966    payload: { domain: getPageDomain(), kind: "card" },967  }).catch(() => null);968  const r = resp as { ok: boolean; data?: CardSelectorEntry[] } | null;969  return r?.ok ? (r.data ?? []) : [];970}971972async function openCardSelector(anchor: HTMLInputElement): Promise<void> {973  if (!canOpen()) return;974  if (currentCardDismiss && currentCardAnchor === anchor) return;975  if (anchor === lastDismissedCardField) return;976  if (anchor !== lastDismissedCardField) lastDismissedCardField = null;977  if (wasAlreadyFilled(anchor)) return;978979  const cards = await fetchSavedCards();980  if (cards.length === 0) return; // no saved cards → nothing to offer981982  const cardForm = detectCardForm();983  if (!cardForm?.number) return;984985  currentCardDismiss?.();986  currentCardAnchor = anchor;987  currentCardDismiss = showCardSelector(988    anchor,989    cards,990    {991      domain: getPageDomain(),992      onFill: (entry) => {993        if (!cardForm) return;994        fillCardForm(cardForm, {995          cardNumber: entry.cardNumber ?? "",996          expMonth: entry.expMonth ?? "",997          expYear: entry.expYear ?? "",998          cvc: entry.cvc ?? "",999          cardholderName: entry.cardholderName ?? "",1000        });1001        // All four card field types share the same form — recording the1002        // number field's form is sufficient to suppress reopens on any of1003        // them via wasAlreadyFilled().1004        recordFillSuccess(cardForm.number, cardForm.cvc, cardForm.expiryCombo, cardForm.name);1005        currentCardDismiss = null;1006        currentCardAnchor = null;1007      },1008      onDismiss: () => {1009        lastDismissedCardField = anchor;1010        startDismissLock();1011        currentCardDismiss = null;1012        currentCardAnchor = null;1013      },1014    }1015  );1016}10171018function injectCardIcon(field: HTMLInputElement): void {1019  if (processedCardInputs.has(field)) return;1020  const cleanup = injectFieldIcon(field, () => {1021    currentCardDismiss?.();1022    currentCardDismiss = null;1023    lastDismissedCardField = null;1024    dismissLock = false;1025    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }1026    clearFillStateForExplicitSummon(field);1027    field.focus({ preventScroll: true });1028    void openCardSelector(field);1029  });1030  processedCardInputs.set(field, cleanup);1031}10321033function setupCardAutofill(): void {1034  function scan() {1035    const cardForm = detectCardForm();1036    if (!cardForm?.number) return;1037    if (!isVisible(cardForm.number)) return;1038    injectCardIcon(cardForm.number);1039  }10401041  // Initial detection sweep — same retry cadence as login fields so1042  // late-hydrating SPA checkout pages get caught.1043  setTimeout(scan, 0);1044  setTimeout(scan, 500);1045  setTimeout(scan, 1500);10461047  // Re-scan on DOM mutation (separate from the login MutationObserver1048  // because card forms typically appear on a single navigation event,1049  // not field-by-field — coarser observation is sufficient here).1050  let pending = false;1051  new MutationObserver(() => {1052    if (pending) return;1053    pending = true;1054    setTimeout(() => { pending = false; scan(); }, 200);1055  }).observe(document.body, { childList: true, subtree: true });10561057  // Field-focus path: on focus of a cc-number input, ensure icon is1058  // present and consider opening the selector when the user explicitly1059  // clicks into the card number field.1060  document.addEventListener("focusin", (e) => {1061    const target = e.target;1062    if (!(target instanceof HTMLInputElement)) return;1063    const cardForm = detectCardForm();1064    if (cardForm?.number === target) {1065      injectCardIcon(target);1066    }1067  }, true);1068}10691070chrome.runtime.onMessage.addListener((msg, sender, sendResponse) => {1071  // Ignore anything not originating from our own background/service worker.1072  if (sender.id !== chrome.runtime.id) return;1073  if (msg?.type === "GET_SITE_PASSWORD_POLICY") {1074    const policy = detectPasswordPolicy();1075    sendResponse({ ok: true, data: policy });1076    return true;1077  }1078  if (msg?.type === "PING") {1079    sendResponse({ ok: true });1080    return true;1081  }1082  if (msg?.type === "SUMMON_AUTOFILL") {1083    const source = (msg as { type: string; source?: string }).source;1084    const isShortcut = source === "shortcut";1085    const isPasskeyUnlock = source === "passkey-unlock";10861087    const activeInput = getDeepActiveInput();1088    const fields = detectLoginFields();1089    const hasForm = isAnyCredentialForm(fields);10901091    if (hasForm) {1092      // Prefer the currently focused field if it's a login field, otherwise1093      // fall back to the first password field, then username/email.1094      const inForm = activeInput && fields.some(f => f.el === activeInput);1095      const target = inForm1096        ? activeInput1097        : (fields.find(f => f.type === "password")?.el1098            ?? fields.find(f => f.type === "username" || f.type === "email")?.el);1099      if (target) {1100        // Explicit user summon (shortcut or extension button) — bypass all1101        // suppression layers. The user is asking for the popup right now.1102        clearFillStateForExplicitSummon(target);1103        dismissLock = false;1104        if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }1105        lastDismissedField = null;1106        void handleFieldInteraction(target);1107      }1108    } else if (isPasskeyUnlock) {1109      // Vault is locked during a passkey GET request. Show the inline unlock1110      // prompt anchored to whatever element is focused on the page (typically1111      // the passkey/sign-in button the user just tapped).1112      const anchor = (document.activeElement instanceof HTMLElement && document.activeElement !== document.body)1113        ? document.activeElement as unknown as HTMLInputElement1114        : null;1115      if (anchor) {1116        currentDismiss?.();1117        currentAnchorField = null;1118        passkeySummonActive = true;1119        currentDismiss = showAutofillSelector(anchor, [], () => {}, {1120          domain: getPageDomain(),1121          locked: true,1122          onDismiss: () => { passkeySummonActive = false; },1123        });1124      }1125    } else if (isShortcut) {1126      // Shortcut on a page with no login form — show clipboard-copy search mode.1127      showSearchPalette();1128    }11291130    // Record this domain for the recall system when triggered via shortcut.1131    if (isShortcut) {1132      const domain = getPageDomain();1133      if (domain) {1134        chrome.runtime.sendMessage({ type: "RECORD_MANUAL_SUMMON", payload: { domain } }).catch(() => {});1135      }1136    }11371138    sendResponse({ ok: hasForm || isShortcut || isPasskeyUnlock });1139    return true;1140  }1141  if (msg?.type === "PASSKEY_PRO_GATE") {1142    // Background rejected a passkey request for a free user. Show State 111143    // so they know what happened and can choose to upgrade.1144    showPasskeyProGate();1145    sendResponse({ ok: true });1146    return true;1147  }1148  if (msg?.type === "SHOW_PASSKEY_TOAST") {1149    // Block autofill selector for the lifetime of the toast and dismiss anything open.1150    passkeyToastActive = true;1151    if (currentDismiss) {1152      currentDismiss();1153      currentDismiss = null;1154      currentAnchorField = null;1155    }1156    return false; // inject.tsx owns the toast and calls sendResponse1157  }1158  if (msg?.type === "DISMISS_PASSKEY_TOAST") {1159    passkeyToastActive = false;1160    return false; // inject.tsx handles the actual dismissal1161  }1162  if (msg?.type === "VAULT_UNLOCKED") {1163    if (passkeySummonActive) {1164      // This unlock was for a pending passkey GET request. Just dismiss the1165      // inline popup — the passkey approval toast takes over from here.1166      passkeySummonActive = false;1167      if (currentDismiss) {1168        currentDismiss();1169        currentDismiss = null;1170        currentAnchorField = null;1171      }1172      sendResponse({ ok: true });1173      return true;1174    }1175    // Normal autofill path: close the locked-state prompt and re-open with1176    // fresh entry data at the same anchor field.1177    const savedField = currentAnchorField;1178    if (currentDismiss) {1179      currentDismiss();1180      currentDismiss = null;1181      currentAnchorField = null;1182    }1183    void handleFieldInteraction(savedField ?? undefined);1184    sendResponse({ ok: true });1185    return true;1186  }1187  return true;1188});11891190// inject.tsx posts this when the passkey toast closes (approve, deny, or timeout)1191// so we know it's safe to allow autofill again.1192window.addEventListener("message", (e: MessageEvent) => {1193  // Reject postMessages from cross-frame senders — only the same window's1194  // injected toast may flip this flag.1195  if (e.source !== window) return;1196  const d = e.data as { source?: string; type?: string } | undefined;1197  if (d?.source === "peach-passkey-toast" && d?.type === "toast-closed") {1198    passkeyToastActive = false;1199  }1200});12011202// ── Firefox passkey detection bridge (legacy observer path) ─────────────1203//1204// Pre-v2.12.0 the MAIN-world `passkeys-firefox.ts` was an observer — it1205// emitted `peach-passkey-firefox` postMessages so this content script could1206// surface State 12 (an inline "Save passkey to Peach" offer). v2.12.01207// replaced the observer with a full interception proxy (the page never1208// reaches a real navigator.credentials.create on Firefox anymore), and the1209// approval UI is opened by the background as part of the ceremony itself.1210// When the proxy is active the offer would be redundant noise, so the1211// listener gates on the flag. Once the proxy is removed (Firefox ships1212// webAuthenticationProxy) this whole block goes too.1213if (!FIREFOX_USE_CONTENT_SCRIPT_PROXY) {1214  let lastPasskeyOfferAt = 0;1215  const PASSKEY_OFFER_COOLDOWN_MS = 30_000;12161217  window.addEventListener("message", (event: MessageEvent) => {1218    if (event.source !== window) return;1219    const data = event.data as { source?: string; type?: string; rpId?: string; rpName?: string; userName?: string; userDisplayName?: string } | undefined;1220    if (!data || data.source !== "peach-passkey-firefox") return;1221    if (detectBrowser() !== "firefox") return;1222    if (data.type !== "create") return;12231224    // Cooldown: a single page interaction can fire multiple credentials.create1225    // calls. Show the offer at most once per 30 seconds per page session.1226    const now = Date.now();1227    if (now - lastPasskeyOfferAt < PASSKEY_OFFER_COOLDOWN_MS) return;1228    lastPasskeyOfferAt = now;12291230    const domain = location.hostname.replace(/^www\./, "");1231    chrome.runtime.sendMessage({1232      type: "GET_PASSKEY_OFFER_DECLINED",1233      payload: { domain },1234    }).then((res: { ok: boolean; data?: boolean } | undefined) => {1235      if (res?.data === true) return;1236      const rpId = data.rpId ?? domain;1237      showPasskeyRegistrationOffer({1238        rpId,1239        rpName: data.rpName,1240        userName: data.userName,1241        userDisplayName: data.userDisplayName,1242      });1243    }).catch(() => {});1244  });1245}12461247// Surface State 11 (passkey-available) only when it adds value:1248//   - Cross-browser entry: Chrome passkey on Firefox or vice versa — neither1249//     browser will auto-route, so the banner explains the re-register need.1250//   - Firefox + same-browser entry: Firefox has no equivalent of1251//     webAuthenticationProxy, so without a banner the user has no signal that1252//     Peach is the source.1253// On Chrome with a same-browser entry: skip — webAuthenticationProxy handles1254// the page's own credentials.get transparently and the popup approval view1255// already surfaces it. A banner here would just be noise.1256//1257// Dedupe across navigation: each navigation re-injects this content script.1258// chrome.storage.session keyed by domain is the natural per-tab/per-session1259// memory; session storage clears when the user closes the browser.1260{1261  function checkPasskeyAvailability() {1262    const domain = location.hostname.replace(/^www\./, "");1263    if (!domain) return;1264    const sessionKey = `peach_state11_shown:${domain}`;1265    chrome.storage.session?.get(sessionKey).then((stored) => {1266      if (stored && (stored as Record<string, unknown>)[sessionKey]) return;1267      chrome.runtime.sendMessage({1268        type: "GET_PASSKEY_FOR_DOMAIN",1269        payload: { domain },1270      }).then((res: { ok: boolean; data?: { rpId: string; userName: string; browser?: "chrome" | "firefox" } | null } | undefined) => {1271        const data = res?.data;1272        if (!data) return;1273        const current = detectBrowser();1274        const isCrossBrowser =1275          data.browser && current !== "unknown" && data.browser !== current;1276        const valuableOnFirefox = current === "firefox";1277        if (!isCrossBrowser && !valuableOnFirefox) return;1278        chrome.storage.session?.set({ [sessionKey]: Date.now() }).catch(() => {});1279        showPasskeyAvailable({1280          rpId: data.rpId,1281          userName: data.userName,1282          fromBrowser: data.browser,1283          currentBrowser: current,1284        });1285      }).catch(() => {});1286    }).catch(() => {});1287  }12881289  // Defer until DOM is interactive — content_scripts run at document_idle but1290  // some pages still mutate visibly afterwards. A short delay also avoids1291  // surfacing the State 11 toast while the user is in the middle of typing.1292  if (document.readyState === "loading") {1293    document.addEventListener("DOMContentLoaded", () => setTimeout(checkPasskeyAvailability, 800));1294  } else {1295    setTimeout(checkPasskeyAvailability, 800);1296  }1297}