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MediaWiki:Gadget-GrAnnotations.js

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Revision as of 10:37, 28 September 2026 by Vaishnavi (talk | contribs)

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/**
 * gr_annotations.js  —  grantha.io inline Notes + Bookmarks + Footnotes + Feedback  (v6 + Strategy B + Footnotes tab)
 */

/* global mw, $ */
( function () {
  'use strict';

  var CONTENT_SEL   = '#mw-content-text';
  var BM_LS_KEY     = 'grantha_bm_'  + ( ( window.mw && mw.config.get( 'wgPageName' ) ) || '' );
  var NT_LS_KEY     = 'grantha_nt_'  + ( ( window.mw && mw.config.get( 'wgPageName' ) ) || '' );
  // Writes that have not reached the server yet. Scoped per user and per
  // page where it is built: the keys above are per page, and a shared
  // machine has more than one user.
  var Q_LS_KEY      = 'grantha_q_v1';
  var pageTitle     = ( window.mw && mw.config.get( 'wgPageName' ) ) || '';
  var currentUser   = ( window.mw && mw.config.get( 'wgUserName' ) ) || '';
  var userInitial   = currentUser ? currentUser.charAt( 0 ).toUpperCase() : '?';
  var currentUserEmail = '';

  // FIXED: was `new mw.Api()` called directly and synchronously here —
  // at this point in MediaWiki:Common.js's own load lifecycle,
  // mediawiki.api (the module that provides the REAL mw.Api
  // constructor) is not guaranteed to have finished loading yet, and
  // calling the constructor before it has throws "mw.Api is not a
  // constructor" synchronously. Confirmed directly via the real error
  // trace, and confirmed this is pre-existing code, not anything
  // introduced by the more recent Ullekha/tab changes. Uncaught here
  // (the .catch below only ever handled promise rejections, never a
  // synchronous throw from the constructor call itself), this would
  // halt the REST of this script's own execution — meaning later code
  // in this same file (the tab-building logic) may never run at all on
  // whatever page load hits this race. mw.loader.using() guarantees the
  // module is actually ready before mw.Api is ever touched, regardless
  // of load timing. Verified the exact failure mode and the fix
  // directly before applying here.
  if ( currentUser && window.mw ) {
    mw.loader.using( 'mediawiki.api' ).then( function () {
      return new mw.Api().get({ action: 'query', meta: 'userinfo', uiprop: 'email', formatversion: 2 });
    } ).then( function (data) {
      var info = data && data.query && data.query.userinfo;
      if ( info && info.email ) currentUserEmail = info.email;
    } ).catch( function () {} );
  }

  if ( window.mw ) {
    var ns = mw.config.get( 'wgNamespaceNumber' );
    if ( ns < 0 ) return;
  }

  var _selRange   = null;
  var _selText    = '';
  var _selRect    = null;
  var _notes      = [];
  var _bookmarks  = [];
  var _activeTab  = 'notes';
  var _selVersion = 0;
  var _fabSelVer  = -1;
  var _mobile     = window.innerWidth < 768 || 'ontouchstart' in window;
  var _fabTouched = false;  // flag to prevent hideActions when tapping fab

  function uid() { return 'gra_' + Date.now() + '_' + Math.random().toString(36).slice(2,7); }
  function esc(s) {
    return String(s||'').replace(/&/g,'&amp;').replace(/</g,'&lt;')
                        .replace(/>/g,'&gt;').replace(/"/g,'&quot;');
  }
  function nowIso() { return new Date().toISOString().replace(/\.\d{3}Z$/,'Z'); }
  function fmtTs(ts) {
    try {
      var d = new Date(ts);
      return d.toLocaleDateString('en-IN',{day:'numeric',month:'short',year:'numeric'})
           + ' ' + d.toLocaleTimeString('en-IN',{hour:'2-digit',minute:'2-digit',hour12:false});
    } catch(e){ return ts; }
  }
  function clamp(v,lo,hi){ return Math.max(lo,Math.min(hi,v)); }
  function isMobile() { return _mobile; }

  // The server caps a note at 8192 *bytes* (MAX_TEXT_BYTES), and Devanagari
  // runs three bytes to the character, so the real limit is about 2,700
  // characters — reachable for the kind of thing people write here. Caught
  // at the composer, because the alternative is a note that looks saved,
  // sits in the panel all session, and is simply absent the next time the
  // page is opened.
  var MAX_NOTE_BYTES = 8192;
  function byteLength(s) {
    try { return new TextEncoder().encode(s).length; }
    catch (e) { return unescape(encodeURIComponent(s)).length; }
  }

  /* ══════════════════════ Store ══════════════════════
   * Notes and bookmarks live in the wiki database, in gr_annotations, via
   * the GranthaAnnotations extension — which is what lets the same notes
   * show up in the mobile app. They used to live only in localStorage, so
   * they were stranded in one browser.
   *
   * localStorage does not go away; it changes job. It is now
   *   · a cache,  so a reload paints the panel instantly instead of waiting
   *               on the network, and a page read offline still shows notes
   *   · an outbox mirror, so a write made while offline survives a reload
   * The database is the record. The browser is a convenience in front of it.
   *
   * Anonymous readers have no database row to own, and the API refuses them
   * outright, so for them localStorage stays the store exactly as before.
   * Every write is optimistic: memory and cache update first, the panel
   * re-renders immediately, and the request follows.
   */
  var Store = ( function () {

    var loggedIn = !!currentUser;
    // Rejections the server will never change its mind about. Anything not
    // listed here is treated as temporary and retried.
    var TERMINAL = { badid: 1, notowner: 1, texttoolong: 1, missingparam: 1 };
    var _api = null;
    var flushing = null;          // the in-flight flush's promise, or null
    var outbox = [];              // authoritative in memory; mirrored to LS

    // mw.Api only exists once mediawiki.api has loaded, and asking for it
    // sooner throws. Everything that talks to the server waits on this, so a
    // load failure degrades to cache-and-queue instead of throwing.
    function ready() {
      if ( !window.mw || !mw.loader ) return $.Deferred().reject().promise();
      return mw.loader.using( 'mediawiki.api' ).then( function () {
        if ( !_api ) _api = new mw.Api();
        return _api;
      } );
    }

    function ls( k, v ) {
      try {
        if ( v === undefined ) return localStorage.getItem( k );
        localStorage.setItem( k, v );
        return true;
      } catch ( e ) { return null; }
    }
    function readJson( k, fallback ) {
      try { return JSON.parse( ls( k ) || '' ) || fallback; } catch ( e ) { return fallback; }
    }
    function whoami() { return currentUser || null; }

    /* ── Outbox ──────────────────────────────────────────────────────
     * Held in memory and mirrored to localStorage, not held *in* it. A
     * browser that refuses to store — private mode, quota, policy — used to
     * mean the write was never sent at all, because the send re-read the
     * queue it had just failed to write. Now storage only decides whether an
     * unsent write survives a reload.
     *
     * Keyed per user AND per page: the cache keys have always been per page,
     * so a queue scoped only by user cannot describe them. */
    function qKey() { return Q_LS_KEY + '_' + ( currentUser || 'anon' ) + '_' + pageTitle; }
    function mirror() { ls( qKey(), JSON.stringify( outbox ) ); }

    function enqueue( op ) {
      // One pending operation per annotation. A note edited twice before the
      // network returns should send its final state once, not both states in
      // order, and a delete supersedes any save still waiting behind it.
      outbox = outbox.filter( function ( x ) { return x.id !== op.id; } );
      outbox.push( op );
      mirror();
    }
    // Removes the exact operation that was sent, by identity. Matching on
    // id and op instead would let a completing send delete a *newer*
    // operation for the same annotation that replaced it mid-flight.
    function dequeue( op ) {
      var i = outbox.indexOf( op );
      if ( i === -1 ) return;
      outbox.splice( i, 1 );
      mirror();
    }

    function send( op ) {
      var params = { action: 'granthaannotationedit', op: op.op, id: op.id, format: 'json' };
      if ( op.op === 'save' ) {
        params.page = op.page;
        params.type = op.type;
        params.quote = op.quote || '';
        params.text = op.text || '';
        if ( op.ts ) params.ts = op.ts;
      }
      return ready().then( function ( a ) { return a.postWithToken( 'csrf', params ); } );
    }

    /* Drain the outbox oldest-first, stopping at the first failure so
     * ordering is preserved and a server that is down is not hammered. */
    function flush() {
      if ( !loggedIn ) return $.Deferred().resolve().promise();
      // Return the flush already running rather than a fresh resolved
      // promise: load() waits on this before reading, and handing it an
      // instantly-resolved promise would let the read race the writes.
      if ( flushing ) return flushing;
      if ( !outbox.length ) return $.Deferred().resolve().promise();

      var d = $.Deferred();
      flushing = d.promise();
      ( function step() {
        if ( !outbox.length ) { flushing = null; d.resolve(); return; }
        var op = outbox[ 0 ];
        send( op ).done( function () {
          dequeue( op );
          // Guard against a queue that cannot shrink, which would loop
          // re-POSTing the same row for ever. Checked by identity, not by
          // length: a note written while this request was in flight makes
          // the queue longer, and comparing lengths stopped the drain with
          // that newer write still unsent.
          if ( outbox.indexOf( op ) !== -1 ) { flushing = null; d.resolve(); return; }
          step();
        } ).fail( function ( code ) {
          // Verdicts the server will never change its mind about. Left at
          // the head of the queue they block every later write on this page
          // for ever, so they are dropped and the drain carries on.
          if ( TERMINAL[ code ] ) {
            dequeue( op );
            step();
            return;
          }
          // Anything else — offline, 5xx, session expired — is temporary.
          // Stop here so ordering is kept and a struggling server is not
          // hammered; the next write, `online`, or page load retries.
          flushing = null;
          d.resolve();
        } );
      }() );
      return flushing;
    }

    function write( op ) {
      if ( !loggedIn ) return;   // nothing to send, and nothing to accumulate
      enqueue( op );
      flush();
    }

    /* ── public ────────────────────────────────────────────────────── */

    /* What has been written locally since the last answer from the server.
     * The outbox alone is not enough to reconcile with: a note written while
     * the initial read was in flight may well have finished its own POST
     * first, and would then be gone from the outbox by the time the older
     * answer arrives — which would take it off the screen and out of the
     * cache. These two maps outlive the outbox entry and are cleared only
     * when a read has actually been folded in. */
    var localSaves = {}, localDeletes = {};

    function save( type, rec ) {
      localSaves[ rec.id ] = { type: type, rec: rec };
      delete localDeletes[ rec.id ];
      write( {
        op: 'save', id: rec.id, page: pageTitle, type: type,
        quote: rec.quote || '', text: type === 'bookmark' ? rec.name : rec.text,
        ts: rec.ts
      } );
    }
    function remove( id ) {
      localDeletes[ id ] = true;
      delete localSaves[ id ];
      write( { op: 'delete', id: id } );
    }

    /* Cache what is on screen, so the next load of this page paints from it
     * before the network answers.
     *
     * The cache records whose it is, for both signed-in and anonymous
     * readers. The keys are per page, not per user, and always have been, so
     * without an owner two people sharing a machine would see each other's
     * notes — and worse, the next person to sign in would have the previous
     * one's notes uploaded into their account by migrate(). Recording null
     * for "nobody was signed in" is what makes those two cases tellable
     * apart from genuinely pre-upgrade data. */
    function cache() {
      ls( NT_LS_KEY, JSON.stringify( { u: whoami(), v: _notes } ) );
      ls( BM_LS_KEY, JSON.stringify( { u: whoami(), v: _bookmarks } ) );
    }

    function cached( key ) {
      var raw = readJson( key, null );
      if ( !raw ) return [];
      // A bare array predates this version; only migrate() may claim it.
      if ( Array.isArray( raw ) ) return [];
      return ( raw.u === whoami() && Array.isArray( raw.v ) ) ? raw.v : [];
    }

    function fromCache() {
      _notes = cached( NT_LS_KEY );
      _bookmarks = cached( BM_LS_KEY );
    }

    /* ── Claiming ────────────────────────────────────────────────────
     * Hands over whatever this browser holds with no owner: the bare array
     * the old gadget wrote, and the anonymous cache this one writes. Both
     * mean "notes taken on this browser with nobody signed in", which is
     * what a reader who browsed logged out and then registered has.
     *
     * There is no "already migrated" flag, deliberately. A flag has to be
     * scoped, and every scoping is wrong somewhere: per user alone marked
     * every page but the first as done; per user and page was set on the
     * first visit even when there was nothing to hand over, so notes taken
     * anonymously *afterwards* could never be claimed and were overwritten
     * on the next sign-in.
     *
     * What actually marks the job done is cache(), which replaces the
     * ownerless value under the same key with an owned one. After a claim
     * there is nothing left to claim, so a note deleted later on another
     * device cannot be resurrected by a stale array — and if the browser
     * refuses to store, re-claiming is harmless anyway, because the ids are
     * unchanged and the server's save is an upsert. */
    /* What a signing-in user may claim as their own: the bare array the old
     * gadget wrote, and the anonymous cache this one writes. Both mean "this
     * browser's notes, with nobody signed in" — which is what someone who
     * read logged out and then registered has. Without the second case,
     * signing in read them as unclaimable, then overwrote them with the
     * server's empty answer and they were gone for good. */
    function legacy( key ) {
      var raw = readJson( key, null );
      if ( Array.isArray( raw ) ) return raw;
      if ( raw && raw.u === null && Array.isArray( raw.v ) ) return raw.v;
      return [];
    }
    function migrate() {
      if ( !loggedIn ) return false;
      var found = false;
      legacy( NT_LS_KEY ).forEach( function ( n ) {
        if ( !n || !n.id ) return;
        // The old gadget imposed no length limit, so a note from before the
        // upgrade can be past what the server accepts. Left in, it would sit
        // at the head of the queue; dropped here, it stays on screen and in
        // the cache, just not synced.
        if ( byteLength( n.text || '' ) > MAX_NOTE_BYTES ) return;
        found = true;
        enqueue( { op: 'save', id: n.id, page: pageTitle, type: 'note',
                   quote: n.quote || '', text: n.text || '', ts: n.ts } );
      } );
      legacy( BM_LS_KEY ).forEach( function ( b ) {
        if ( !b || !b.id ) return;
        found = true;
        enqueue( { op: 'save', id: b.id, page: pageTitle, type: 'bookmark',
                   quote: b.quote || '', text: b.name || '', ts: b.ts } );
      } );
      return found;
    }

    /* ── Reconciliation ──────────────────────────────────────────────
     * The server's answer describes the moment the request was sent. A note
     * written while it was in the air, or a delete, is in the outbox and not
     * in that answer — replacing state wholesale would take it off the
     * screen and out of the cache, and the reader would watch their note
     * disappear. So anything still pending is re-applied on top. */
    function reconcile( notes, marks ) {
      function apply( list, type ) {
        var out = list.filter( function ( r ) {
          return !localDeletes[ r.id ] && !localSaves[ r.id ];
        } );
        Object.keys( localSaves ).forEach( function ( id ) {
          var s = localSaves[ id ];
          if ( s.type === type ) out.push( s.rec );
        } );
        return out;
      }
      return { notes: apply( notes, 'note' ), marks: apply( marks, 'bookmark' ) };
    }

    /* Fill _notes and _bookmarks. The cache is in place synchronously so the
     * first paint is instant; the server's answer lands later. */
    function load() {
      outbox = readJson( qKey(), [] );
      if ( !Array.isArray( outbox ) ) outbox = [];

      if ( !loggedIn ) {
        // localStorage is the store, not a cache. Accept the owner-stamped
        // shape and, once, the bare array the old gadget wrote.
        _notes = cached( NT_LS_KEY );
        _bookmarks = cached( BM_LS_KEY );
        if ( !_notes.length ) _notes = legacy( NT_LS_KEY );
        if ( !_bookmarks.length ) _bookmarks = legacy( BM_LS_KEY );
        return $.Deferred().resolve( false ).promise();
      }

      if ( migrate() ) {
        // Show what this browser already had straight away. migrate() has
        // just claimed it for whoever is signed in now, so what is on screen
        // and what is being sent up are the same set — and a first run that
        // happens to be offline still shows the reader their notes rather
        // than an empty panel.
        _notes = legacy( NT_LS_KEY );
        _bookmarks = legacy( BM_LS_KEY );
        cache();
      } else {
        fromCache();
      }

      var d = $.Deferred();
      var rows = [];

      // 500 is the server's maximum page size, and it orders newest first —
      // so a reader with more than that on one page would silently lose
      // their *oldest* annotations from the panel and from the cache.
      // Follow the continuation until it stops rather than assuming nobody
      // will get there.
      function fetchFrom( offset ) {
        return ready().then( function ( a ) {
          var params = {
            action: 'granthaannotations', page: pageTitle,
            limit: 500, formatversion: 2, format: 'json'
          };
          if ( offset ) params[ 'continue' ] = offset;
          return a.get( params );
        } ).then( function ( data ) {
          var block = data && data.granthaannotations;
          var got = block && block.annotations;
          if ( Array.isArray( got ) ) rows = rows.concat( got );
          // The module reports its own continuation, inside its own result.
          var next = block && block[ 'continue' ];
          // Guard against a server that keeps handing back the same offset.
          if ( next !== undefined && next !== null && String( next ) !== String( offset ) &&
               rows.length < 5000 ) {
            return fetchFrom( next );
          }
          return rows;
        } );
      }

      flush().always( function () {
        fetchFrom( null ).done( function () {
          var notes = [], marks = [];
          rows.forEach( function ( r ) {
            if ( r.type === 'bookmark' ) {
              marks.push( { id: r.id, name: r.text, quote: r.quote, ts: r.ts } );
            } else {
              notes.push( { id: r.id, ts: r.ts, quote: r.quote, text: r.text } );
            }
          } );
          // The server returns newest first; the panel reverses for display,
          // so hold them oldest-first the way the local arrays always were.
          var merged = reconcile( notes.reverse(), marks.reverse() );
          _notes = merged.notes;
          _bookmarks = merged.marks;
          // Folded in, so the local record of what has changed since can
          // start again. Anything still unsent stays in the outbox.
          localSaves = {}; localDeletes = {};
          cache();
          d.resolve( true );
        } ).fail( function () {
          // Offline, or the extension is not installed. The cache already
          // loaded, and anything written meanwhile is queued.
          d.resolve( false );
        } );
      } );
      return d.promise();
    }

    if ( loggedIn && window.addEventListener ) {
      window.addEventListener( 'online', function () { flush(); } );
    }

    return { load: load, save: save, remove: remove, cache: cache, flush: flush,
             isRemote: function () { return loggedIn; } };
  }() );

  var $fab, $mobileBar, $panel, $backdrop;
  var $ntComposer, $ntInput, $ntSubmit;
  var $bmComposer, $bmInput, $bmSubmit;
  var $fbComposer, $fbIssueType, $fbText, $fbEmail, $fbSubmit, $fbQuote;
  // CHANGED: added $tabFootnotes / $paneFootnotes alongside the existing
  // Notes/Bookmarks tab+pane refs, for the Footnotes tab. REMOVED: the
  // earlier $tabSandarbha/$paneSandarbha — that feature was replaced by
  // the real Ullekha citation-index mechanism (see quickedit.js), which
  // works entirely through common.js's own site-wide logic and needs no
  // panel integration here at all.
  var $tabNotes, $tabBookmarks, $tabFootnotes, $paneNotes, $paneBookmarks, $paneFootnotes;

  function buildDom() {
    $fab = $( [
      '<div id="gra-fab" role="toolbar" aria-label="Feedback / Notes / Bookmark">',
      '  <button class="gra-fab-btn" id="gra-fab-note" type="button" aria-label="Note">',
      '    <span class="gra-icon gra-icon-note" aria-hidden="true"></span>',
      '    <span class="gra-fab-btn-label">Note</span>',
      '  </button>',
      '  <button class="gra-fab-btn" id="gra-fab-bookmark" type="button" aria-label="Mark">',
      '    <span class="gra-icon gra-icon-bookmark" aria-hidden="true"></span>',
      '    <span class="gra-fab-btn-label">Mark</span>',
      '  </button>',
      '  <button class="gra-fab-btn" id="gra-fab-feedback" type="button" aria-label="Feedback">',
      '    <span class="gra-icon gra-icon-feedback" aria-hidden="true"></span>',
      '    <span class="gra-fab-btn-label">Feedback</span>',
      '  </button>',
      '  <button class="gra-fab-btn" id="gra-fab-search" type="button" aria-label="Search">',
      '    <span class="gra-icon gra-icon-search" aria-hidden="true"></span>',
      '    <span class="gra-fab-btn-label">Search</span>',
      '  </button>',
      '  <button class="gra-fab-btn gra-fab-btn-dismiss" id="gra-fab-dismiss" type="button" aria-label="Dismiss">',
      '    <span class="gra-icon gra-icon-dismiss" aria-hidden="true"></span>',
      '    <span class="gra-fab-btn-label">Close</span>',
      '  </button>',
      '</div>',
    ].join('') );
    $('body').append($fab);

    $mobileBar = $('<div id="gra-mobile-bar"></div>');
    $('body').append($mobileBar);

    $fbComposer = $( [
      '<div class="gra-composer" id="gra-fb-composer" role="dialog" aria-label="Send feedback">',
      '  <div class="gra-composer-header">',
      '    <span class="gra-icon gra-icon-feedback" aria-hidden="true"></span>',
      '    <strong>Feedback</strong>',
      '    <button class="gra-btn-x" id="gra-fb-close" title="Close">✕</button>',
      '  </div>',
      '  <div class="gra-fb-quote-label">Selected text:</div>',
      '  <div class="gra-fb-quote" id="gra-fb-quote"></div>',
      '  <div class="gra-fb-field-label">Issue type</div>',
      '  <select class="gra-fb-select" id="gra-fb-issue">',
      '    <option value="">— Choose —</option>',
      '    <option value="wrong_text">Formatting error</option>',
      '    <option value="reference_issue">Reference issue</option>',
      '    <option value="spelling_mistake">Spelling mistake</option>',
      '    <option value="other">Other</option>',
      '  </select>',
      '  <div class="gra-fb-field-label">Details (optional)</div>',
      '  <textarea class="gra-composer-input" id="gra-fb-text" placeholder="Describe the issue…" rows="3"></textarea>',
      '  <div class="gra-fb-field-label">Your email (optional)</div>',
      '  <input class="gra-composer-input gra-fb-email-input" id="gra-fb-email" type="email" placeholder="you@example.com" autocomplete="email">',
      '  <div class="gra-composer-actions">',
      '    <button class="gra-btn-cancel" id="gra-fb-cancel">Cancel</button>',
      '    <button class="gra-btn-submit" id="gra-fb-submit" disabled>Send</button>',
      '  </div>',
      '  <div class="gra-fb-status" id="gra-fb-status"></div>',
      '</div>',
    ].join('') );
    $('body').append($fbComposer);

    $ntComposer = $( [
      '<div class="gra-composer" id="gra-nt-composer" role="dialog" aria-label="Add note">',
      '  <div class="gra-composer-user">',
      '    <div class="gra-avatar">' + esc(currentUser ? userInitial : '✎') + '</div>',
      '    <div class="gra-composer-uname">' + esc(currentUser || 'Notes') + '</div>',
      '  </div>',
      '  <textarea class="gra-composer-input" id="gra-nt-input" placeholder="Write a note…" rows="3"></textarea>',
      '  <div class="gra-composer-actions">',
      '    <button class="gra-btn-cancel" id="gra-nt-cancel">Cancel</button>',
      '    <button class="gra-btn-submit" id="gra-nt-submit" disabled>Save Note</button>',
      '  </div>',
      '</div>',
    ].join('') );
    $('body').append($ntComposer);

    $bmComposer = $( [
      '<div class="gra-bm-composer" id="gra-bm-composer" role="dialog" aria-label="Bookmark">',
      '  <div class="gra-bm-composer-label">',
      '    <span class="gra-icon gra-icon-bookmark" aria-hidden="true"></span>',
      '    Save bookmark',
      '  </div>',
      '  <input class="gra-composer-input" id="gra-bm-input" type="text" placeholder="Name this bookmark…" autocomplete="off">',
      '  <div class="gra-composer-actions">',
      '    <button class="gra-btn-cancel" id="gra-bm-cancel">Cancel</button>',
      '    <button class="gra-btn-submit" id="gra-bm-submit">Save</button>',
      '  </div>',
      '</div>',
    ].join('') );
    $('body').append($bmComposer);

    $panel = $( [
      '<div id="gra-panel" role="complementary" aria-label="Notes">',
      '  <div id="gra-panel-head">',
      '    <div id="gra-panel-title"></div>',
      '    <button id="gra-panel-close" title="Close">✕</button>',
      '  </div>',
      '  <div id="gra-tabs">',
      '    <button class="gra-tab gra-tab-active" id="gra-tab-notes">',
      '      <span class="gra-icon gra-icon-note" aria-hidden="true"></span> Notes',
      '    </button>',
      '    <button class="gra-tab" id="gra-tab-bookmarks">',
      '      <span class="gra-icon gra-icon-bookmark" aria-hidden="true"></span> Bookmarks',
      '    </button>',
      '    <button class="gra-tab" id="gra-tab-footnotes">',
      '      <span class="gra-icon gra-icon-footnote" aria-hidden="true"></span> Footnotes',
      '    </button>',
      '  </div>',
      '  <div id="gra-panel-body">',
      '    <div class="gra-pane gra-pane-active" id="gra-pane-notes"></div>',
      '    <div class="gra-pane" id="gra-pane-bookmarks"></div>',
      '    <div class="gra-pane" id="gra-pane-footnotes"></div>',
      '  </div>',
      '</div>',
    ].join('') );
    $('body').append($panel);

    $backdrop = $('<div id="gra-backdrop" aria-hidden="true"></div>');
    $('body').append($backdrop);

    var $toggle = $( [
      '<button id="gra-toggle" aria-label="Notes">',
      '  <span class="gra-icon gra-icon-note" id="gra-toggle-icon" aria-hidden="true"></span>',
      '  <span id="gra-toggle-badge" aria-live="polite"></span>',
      '</button>',
    ].join('') );
    $('body').append($toggle);
    $toggle.on('click', function() {
      $panel.hasClass('gra-panel-open') ? closePanel() : openPanel(_activeTab);
    });

    $('#gra-panel-title').text(pageTitle.replace(/_/g,' ').split('/')[0].slice(0,30));
    $tabNotes     = $('#gra-tab-notes');
    $tabBookmarks = $('#gra-tab-bookmarks');
    $tabFootnotes = $('#gra-tab-footnotes');
    $paneNotes    = $('#gra-pane-notes');
    $paneBookmarks= $('#gra-pane-bookmarks');
    $paneFootnotes= $('#gra-pane-footnotes');
    $ntInput      = $('#gra-nt-input');
    $ntSubmit     = $('#gra-nt-submit');
    $bmInput      = $('#gra-bm-input');
    $bmSubmit     = $('#gra-bm-submit');
    $fbIssueType  = $('#gra-fb-issue');
    $fbText       = $('#gra-fb-text');
    $fbEmail      = $('#gra-fb-email');
    $fbSubmit     = $('#gra-fb-submit');
    $fbQuote      = $('#gra-fb-quote');
  }

  function captureSelection() {
    var sel = window.getSelection();
    if (!sel || sel.isCollapsed || !sel.rangeCount) return false;
    var range = sel.getRangeAt(0);
    var text  = sel.toString().trim();
    if (!text || text.length < 2) return false;
    var contentEl = document.querySelector(CONTENT_SEL);
    if (!contentEl) return false;
    var ancestor = range.commonAncestorContainer;
    if (ancestor.nodeType === 3) ancestor = ancestor.parentNode;
    if (!ancestor || !contentEl.contains(ancestor)) return false;
    var _editorEl = document.getElementById('se-surface') ||
                    document.querySelector('.se-outer');
    if ( _editorEl && _editorEl.contains(ancestor) ) return false;
    if ( document.body.classList.contains('gra-editing') ) return false;
    _selText  = text;
    _selRect  = range.getBoundingClientRect();
    try { _selRange = range.cloneRange(); }
    catch(e){ _selRange = null; }
    return true;
  }

  function reCaptureFromDOM() {
    if (!_selText) return false;
    var contentEl = document.querySelector(CONTENT_SEL);
    if (!contentEl) return false;
    var found = findTextInContent(contentEl, _selText.slice(0,80).replace(/…$/,'').trim());
    if (!found) return false;
    _selRange = found;
    return true;
  }

  function tryShowActions() {
    if ($fbComposer && $fbComposer.hasClass('gra-composer-visible')) return;
    if ($ntComposer && $ntComposer.hasClass('gra-composer-visible')) return;
    if ($bmComposer && $bmComposer.hasClass('gra-composer-visible')) return;
    if (!captureSelection()) { hideActions(); return; }
    _fabSelVer = _selVersion;
    showFab(_selRect);
  }

  function showFab(rect) {
    if (!rect) return;
    var fabW, fabH, top, left;
    if (_mobile) {
      $fab.css({ position: '', top: '', left: '', visibility: '' })
          .addClass('gra-fab-visible gra-fab-mobile-docked');
      return;
    }
    fabW = 46; fabH = 126;
    top  = rect.top + (rect.height / 2) - (fabH / 2);
    left = rect.right + 10;
    if (left + fabW > window.innerWidth - 8) left = rect.left - fabW - 10;
    top  = clamp(top,  8, window.innerHeight - fabH - 8);
    left = clamp(left, 8, window.innerWidth  - fabW - 8);
    $fab.css({ top: top + 'px', left: left + 'px' }).addClass('gra-fab-visible');
  }

  function hideFab() { $fab.removeClass('gra-fab-visible gra-fab-mobile-docked'); }
  function hideActions() { hideFab(); }

  function wrapSelection(id, cssClass) {
    var range = _selRange;
    _selRange = null;
    if (!range) return null;
    try {
      if (!document.contains(range.startContainer) ||
          !document.contains(range.endContainer)) return null;
    } catch(e) { return null; }
    function makeSpan() {
      var sp = document.createElement('span');
      sp.className = cssClass;
      sp.setAttribute('data-gra-id', id);
      return sp;
    }
    try {
      var span = makeSpan();
      range.surroundContents(span);
      if (span.parentNode) return span;
    } catch(e) {}
    try {
      var frag = range.extractContents();
      var sp2  = makeSpan();
      sp2.appendChild(frag);
      range.insertNode(sp2);
      if (sp2 && sp2.parentNode) return sp2;
    } catch(e2) {}
    return null;
  }

  function openFeedbackComposer() {
    hideActions();
    $fbQuote.text(_selText.slice(0,200) + (_selText.length > 200 ? '…' : ''));
    $fbIssueType.val('');
    $fbText.val('');
    $fbSubmit.prop('disabled', true);
    $('#gra-fb-status').text('').removeClass('gra-fb-ok gra-fb-err');
    if (currentUserEmail) $fbEmail.val(currentUserEmail);
    else $fbEmail.val('');
    if (!_mobile) $fbComposer.css({top:'', left:'', transform:''});
    $fbComposer.addClass('gra-composer-visible');
    $backdrop.addClass('gra-backdrop-visible');
    setTimeout(function(){ $fbIssueType.focus(); }, isMobile() ? 300 : 0);
  }

  function closeFeedbackComposer() {
    $fbComposer.removeClass('gra-composer-visible');
    $backdrop.removeClass('gra-backdrop-visible');
    _selRange = null; _selText = ''; _selRect = null;
  }

  function submitFeedback() {
    var issueType = $fbIssueType.val();
    var details   = $fbText.val().trim();
    var email     = $fbEmail.val().trim();
    var quote     = $fbQuote.text();
    if (!issueType) return;
    $fbSubmit.prop('disabled', true).text('Sending…');
    $('#gra-fb-status').text('').removeClass('gra-fb-ok gra-fb-err');
    var issueLabels = {
      wrong_text: 'Formatting error', reference_issue: 'Reference issue',
      spelling_mistake: 'Spelling mistake', other: 'Other'
    };
    var payload = new FormData();
    payload.append('issue_type',    issueLabels[issueType] || issueType);
    payload.append('page',          pageTitle.replace(/_/g,' '));
    payload.append('url',           window.location.href);
    payload.append('selected_text', quote);
    payload.append('details',       details || '');
    payload.append('user_email',    email || currentUserEmail || '');
    payload.append('wiki_user',     currentUser || 'anonymous');
    fetch('/feedback.php', {method:'POST', body:payload})
      .then(function(r){ return r.json(); })
      .then(function(data){
        if (data && data.ok) showFeedbackSuccess();
        else showFeedbackError(data && data.error ? data.error : 'Could not send.');
      })
      .catch(function(){ showFeedbackError('Network error. Please try again.'); });
  }

  function showFeedbackSuccess() {
    $fbSubmit.prop('disabled', false).text('Send');
    $('#gra-fb-status').text('✓ Feedback sent. Thank you!').addClass('gra-fb-ok');
    setTimeout(closeFeedbackComposer, 2500);
  }
  function showFeedbackError(msg) {
    $fbSubmit.prop('disabled', false).text('Send');
    $('#gra-fb-status').text('✗ ' + msg).addClass('gra-fb-err');
  }

  function openNoteComposer() {
    hideActions();
    if (!_mobile) $ntComposer.css({ top: '', left: '', transform: '' });
    $ntComposer.addClass('gra-composer-visible');
    $backdrop.addClass('gra-backdrop-visible');
    setTimeout(function(){ $ntInput.focus(); }, isMobile() ? 300 : 0);
  }

  function closeNoteComposer() {
    $ntComposer.removeClass('gra-composer-visible');
    $backdrop.removeClass('gra-backdrop-visible');
    $ntInput.val('');
    $ntSubmit.prop('disabled', true);
    _selRange = null; _selText = ''; _selRect = null;
  }

  function submitNote() {
    var text = $ntInput.val().trim();
    if (!text) return;
    if (byteLength(text) > MAX_NOTE_BYTES) {
      alert('This note is too long to save — please shorten it.');
      return;
    }
    var id    = uid();
    var ts    = nowIso();
    var quote = _selText.slice(0,120) + (_selText.length > 120 ? '…' : '');
    if (!_selRange && _selText) reCaptureFromDOM();
    var span  = wrapSelection(id, 'gra-note-highlight');
    if (span) span.setAttribute('data-gra-quote', quote);
    var rec = {id:id, ts:ts, quote:quote, text:text};
    _notes.push(rec);
    Store.cache();
    Store.save('note', rec);
    renderNoteCards(); updateBadge();
    closeNoteComposer();
    openPanel('notes');
  }

  function openBookmarkComposer() {
    hideActions();
    if (!_mobile) $bmComposer.css({ top: '', left: '', transform: '' });
    $bmComposer.addClass('gra-composer-visible');
    $backdrop.addClass('gra-backdrop-visible');
    setTimeout(function(){ $bmInput.focus(); }, isMobile() ? 300 : 0);
  }

  function closeBookmarkComposer() {
    $bmComposer.removeClass('gra-composer-visible');
    $backdrop.removeClass('gra-backdrop-visible');
    $bmInput.val('');
    _selRange = null; _selText = ''; _selRect = null;
  }

  function submitBookmark() {
    var name  = $bmInput.val().trim() || ('Bookmark ' + (_bookmarks.length+1));
    // A bookmark's name is stored in the same column as a note's text and
    // is capped the same way.
    if (byteLength(name) > MAX_NOTE_BYTES) {
      alert('This bookmark name is too long to save — please shorten it.');
      return;
    }
    var id    = uid();
    var quote = _selText.slice(0,120) + (_selText.length > 120 ? '…' : '');
    if (!_selRange && _selText) reCaptureFromDOM();
    var span  = wrapSelection(id, 'gra-bookmark-highlight');
    if (span) { span.setAttribute('data-gra-id', id); span.setAttribute('data-gra-name', name); }
    var rec = {id:id, name:name, quote:quote, ts:nowIso()};
    _bookmarks.push(rec);
    Store.cache();
    Store.save('bookmark', rec);
    renderBookmarkCards(); updateBadge();
    closeBookmarkComposer();
    openPanel('bookmarks');
  }

  function deleteBookmark(id) {
    _bookmarks = _bookmarks.filter(function(b){ return b.id !== id; });
    var span = document.querySelector('[data-gra-id="'+id+'"].gra-bookmark-highlight');
    if (span && span.parentNode) {
      var p = span.parentNode;
      while (span.firstChild) p.insertBefore(span.firstChild, span);
      p.removeChild(span);
    }
    Store.cache(); Store.remove(id); renderBookmarkCards(); updateBadge();
  }

  function openPanel(tab) {
    _activeTab = tab || _activeTab;
    switchTab(_activeTab);
    $panel.addClass('gra-panel-open');
    $backdrop.addClass('gra-backdrop-visible');
  }
  function closePanel() {
    $panel.removeClass('gra-panel-open');
    $backdrop.removeClass('gra-backdrop-visible');
  }
  // CHANGED: added the footnotes case, alongside notes/bookmarks.
  function switchTab(tab) {
    _activeTab = tab;
    $tabNotes.toggleClass('gra-tab-active', tab==='notes');
    $tabBookmarks.toggleClass('gra-tab-active', tab==='bookmarks');
    $tabFootnotes.toggleClass('gra-tab-active', tab==='footnotes');
    $paneNotes.toggleClass('gra-pane-active', tab==='notes');
    $paneBookmarks.toggleClass('gra-pane-active', tab==='bookmarks');
    $paneFootnotes.toggleClass('gra-pane-active', tab==='footnotes');
    if (tab==='notes') renderNoteCards();
    else if (tab==='bookmarks') renderBookmarkCards();
    else renderFootnoteCards();
  }

  function renderNoteCards() {
    if (!_notes.length) {
      $paneNotes.html('<div class="gra-empty-state">No notes yet.<br>Select text and tap ✎ to add one.</div>');
      return;
    }
    var html = '';
    _notes.slice().reverse().forEach(function(n){
      html += '<div class="gra-note-card" data-gra-id="'+esc(n.id)+'">'
            + '<div class="gra-card-header">'
            + '<span class="gra-icon gra-icon-note" aria-hidden="true"></span>'
            + '<div class="gra-card-meta">'
            + (n.ts ? '<div class="gra-card-ts">'+esc(fmtTs(n.ts))+'</div>' : '')
            + '</div>'
            + '<button class="gra-note-del" data-del-id="'+esc(n.id)+'" title="Delete">×</button>'
            + '</div>'
            + (n.quote ? '<div class="gra-card-quote">'+esc(n.quote)+'</div>' : '')
            + '<div class="gra-card-text">'+esc(n.text)+'</div>'
            + '</div>';
    });
    $paneNotes.html(html);
  }

  function deleteNote(id) {
    _notes = _notes.filter(function(n){ return n.id !== id; });
    var span = document.querySelector('[data-gra-id="'+id+'"].gra-note-highlight');
    if (span && span.parentNode) {
      var p = span.parentNode;
      while (span.firstChild) p.insertBefore(span.firstChild, span);
      p.removeChild(span);
    }
    Store.cache(); Store.remove(id); renderNoteCards(); updateBadge();
  }

  function renderBookmarkCards() {
    if (!_bookmarks.length) {
      $paneBookmarks.html('<div class="gra-empty-state">No bookmarks yet.<br>Select text and tap 🔖 to save one.</div>');
      return;
    }
    var html = '';
    _bookmarks.slice().reverse().forEach(function(b){
      html += '<div class="gra-bookmark-card" data-gra-id="'+esc(b.id)+'">'
            + '<span class="gra-icon gra-icon-bookmark" aria-hidden="true"></span>'
            + '<div class="gra-bookmark-info">'
            + '<div class="gra-bookmark-name">'+esc(b.name)+'</div>'
            + (b.quote ? '<div class="gra-bookmark-quote">'+esc(b.quote)+'</div>' : '')
            + '</div>'
            + '<button class="gra-bookmark-del" data-del-id="'+esc(b.id)+'" title="Remove">×</button>'
            + '</div>';
    });
    $paneBookmarks.html(html);
  }

  // NEW: Footnotes tab — unlike Notes/Bookmarks, footnotes aren't personal
  // localStorage annotations, they're real saved page content (QuickEdit
  // writes .gra-qe-footnotes/.gra-qe-footnote-item directly into the saved
  // HTML). So this reads straight off the live DOM on every open, no
  // fetch, no storage — verified the scan + both-direction lookup logic
  // against realistic saved-footnote HTML before wiring this in (6/6 pass).
  function renderFootnoteCards() {
    var items = document.querySelectorAll(CONTENT_SEL + ' .gra-qe-footnote-item');
    if (!items.length) {
      $paneFootnotes.html('<div class="gra-empty-state">No footnotes on this page.</div>');
      return;
    }
    // CHANGED: grouped by source. A moola page now also carries the notes
    // of every commentary shown on it, and flattening them into one list
    // put a commentary's notes after the moola's with nothing saying which
    // was which - the cards were indistinguishable. Each note is filed
    // under the heading of the document it came from: the page's own notes
    // first, then one section per commentary, in the order the page shows
    // them. common.js wraps injected notes in .gr-teeka-notes-group with a
    // .gr-teeka-notes-title, which is where the heading comes from.
    function groupOf(li) {
      var wrap = li.closest ? li.closest('.gr-teeka-notes-group') : null;
      if (!wrap) return null;
      var t = wrap.querySelector('.gr-teeka-notes-title');
      return {
        slug: wrap.getAttribute('data-teeka-slug') || '',
        title: t ? t.textContent.trim() : ''
      };
    }

    var sections = [];          // [{key, title, items: []}] in document order
    var byKey = {};
    Array.prototype.forEach.call(items, function (li) {
      var g = groupOf(li);
      var key = g ? g.slug : '';
      if (!byKey[key]) {
        byKey[key] = { key: key, title: g ? g.title : '', items: [] };
        sections.push(byKey[key]);
      }
      byKey[key].items.push(li);
    });

    var html = '';
    sections.forEach(function (sec) {
      if (sec.title) {
        html += '<div class="gra-footnote-section-title">' + esc(sec.title) + '</div>';
      } else if (sections.length > 1) {
        html += '<div class="gra-footnote-section-title gra-footnote-section-own">'
              + esc(pageOwnNotesLabel()) + '</div>';
      }
      sec.items.forEach(function (li) { html += footnoteCard(li, sec.title); });
    });
    $paneFootnotes.html(html);
  }

  // The heading for the page's own notes, shown only when there is at
  // least one commentary section to tell them apart from.
  function pageOwnNotesLabel() {
    var t = document.querySelector('.gr-doc-title');
    return (t && t.textContent.trim()) || 'This page';
  }

  function footnoteCard(li, groupTitle) {
      var numEl = li.querySelector('.gra-qe-footnote-num');
      var quoteEl = li.querySelector('.gra-qe-footnote-quote');
      var textEl = li.querySelector('.gra-qe-footnote-text');
      var num = numEl ? numEl.textContent.trim() : '';
      // CHANGED: was showing the NUMBER as the card's primary line and the
      // footnote's own note text as secondary — nowhere did it show WHICH
      // text in the document the footnote actually belongs to, which was
      // the whole point of being able to identify one footnote from
      // another. Now shows the referenced quote as primary (matching how
      // Notes/Bookmarks already identify themselves by quote, not by an
      // arbitrary id), with the number as a small prefix and the
      // footnote's own note text as secondary. Falls back to the note
      // text alone if a footnote predates this change and has no quote
      // span at all, rather than showing nothing.
      var quote = quoteEl ? quoteEl.textContent : '';
      var text = textEl ? textEl.textContent : (quoteEl ? '' : li.textContent);
      var primary = quote ? (num + ' ' + quote) : (num + ' ' + text);
      var id = li.getAttribute('data-gra-id') || '';
      // The commentary's name is repeated on the card itself, not only on
      // the section heading: a reader who has scrolled the panel, or who
      // arrives at a card by clicking a word in the text, sees the card
      // without its heading in view.
      return '<div class="gra-bookmark-card gra-footnote-card" data-gra-id="'+esc(id)+'">'
            + '<span class="gra-icon gra-icon-footnote" aria-hidden="true"></span>'
            + '<div class="gra-bookmark-info">'
            + (groupTitle ? '<div class="gra-footnote-source">'+esc(groupTitle)+'</div>' : '')
            + '<div class="gra-bookmark-name">'+esc(primary)+'</div>'
            + (quote ? '<div class="gra-bookmark-quote">'+esc(text)+'</div>' : '')
            + '</div>'
            + '</div>';
  }

  function scrollToHighlight(id) {
    var el = document.querySelector('[data-gra-id="'+id+'"]');
    if (!el) return;
    el.scrollIntoView({behavior:'smooth', block:'center'});
    el.classList.add('gra-hl-active');
    setTimeout(function(){ el.classList.remove('gra-hl-active'); }, 2000);
  }

  function wireEvents() {

    /* Suppress native context menu inside article content (Android/desktop) */
    document.addEventListener('contextmenu', function(e) {
      var tag = e.target.tagName;
      if (tag === 'INPUT' || tag === 'TEXTAREA' || tag === 'SELECT') return;
      var c = document.querySelector(CONTENT_SEL);
      if (c && c.contains(e.target)) e.preventDefault();
    }, { passive: false });

    /* Desktop mouseup */
    $(document).on('mouseup', function(e){
      if (e.button !== 0) return;
      if (_mobile) return;
      setTimeout(tryShowActions, 20);
    });

    /* Separate timers so mobile + desktop never clobber each other */
    var _selTimer    = null;  /* desktop debounce */
    var _mobShowTimer = null; /* mobile show-on-touchend */

    /* Mobile: show fab quickly after finger lifts (selection settled).
       180ms feels instant while still letting the range stabilise. */
    document.addEventListener('touchend', function(e) {
      if (!_mobile) return;
      if ($fab[0] && $fab[0].contains(e.target)) return;
      clearTimeout(_mobShowTimer);
      _mobShowTimer = setTimeout(function() {
        var sel = window.getSelection();
        if (!sel || sel.isCollapsed || !sel.toString().trim()) return;
        tryShowActions();
      }, 180);
    }, { passive: true });

    /* Mobile: only HIDE the fab when selection is cleared while it's visible.
       (Reposition isn't needed now that the bar is docked, and re-running
       showFab here was causing the lag/flicker.) */
    document.addEventListener('selectionchange', function() {
      if (!_mobile) return;
      if (!$fab.hasClass('gra-fab-visible')) return;
      var sel = window.getSelection();
      if (!sel || sel.isCollapsed || !sel.toString().trim()) {
        clearTimeout(_mobShowTimer);
        hideActions();
      }
    });

    /* selectionchange debounced (desktop only) */
    document.addEventListener('selectionchange', function() {
      if (_mobile) return;
      _selVersion++;
      clearTimeout(_selTimer);
      var v = _selVersion;
      _selTimer = setTimeout(function(){
        if (v !== _selVersion) return;
        if (_fabSelVer === v) return;
        tryShowActions();
      }, 600);
    });

    /* ── KEY FIX: fab touchstart sets flag to prevent hideActions ── */
    $fab[0].addEventListener('touchstart', function(e) {
      _fabTouched = true;
      /* Don't propagate to document handler */
      e.stopPropagation();
    }, { passive: true });

    /* Click outside → hide actions (blocked if fab was touched) */
    $(document).on('mousedown touchstart', function(e){
      if (_fabTouched) { _fabTouched = false; return; }
      var t = e.target;
      if ($fab[0]        && $fab[0].contains(t))        return;
      if ($fbComposer[0] && $fbComposer[0].contains(t)) return;
      if ($ntComposer[0] && $ntComposer[0].contains(t)) return;
      if ($bmComposer[0] && $bmComposer[0].contains(t)) return;
      hideActions();
    });

    /* ── FAB buttons — use touchend for mobile, click for desktop ── */
    function fabAction(btnId, action) {
      var el = document.getElementById(btnId);
      if (!el) return;
      /* touchend: fires before document touchstart clears _selRange */
      el.addEventListener('touchend', function(e) {
        e.preventDefault();
        e.stopPropagation();
        if (!_selRange && !reCaptureFromDOM()) return;
        action();
      }, { passive: false });
      /* click: for desktop */
      el.addEventListener('click', function(e) {
        e.preventDefault();
        e.stopPropagation();
        if (!_selRange && !reCaptureFromDOM()) return;
        action();
      });
    }

    fabAction('gra-fab-note',     openNoteComposer);
    fabAction('gra-fab-bookmark', openBookmarkComposer);
    fabAction('gra-fab-feedback', openFeedbackComposer);

    document.getElementById('gra-fab-search').addEventListener('touchend', function(e) {
      e.preventDefault(); e.stopPropagation();
      var q = _selText;
      hideActions();
      _selRange = null; _selText = ''; _selRect = null;
      if (q && window.showSearchDialog) { window.showSearchDialog(q); }
    }, { passive: false });
    document.getElementById('gra-fab-search').addEventListener('click', function(e) {
      e.preventDefault(); e.stopPropagation();
      var q = _selText;
      hideActions();
      _selRange = null; _selText = ''; _selRect = null;
      if (q && window.showSearchDialog) { window.showSearchDialog(q); }
      else if (q) { $(document).trigger($.Event('keydown', {ctrlKey:true, key:'k', keyCode:75})); }
    });

    /* ── Dismiss button: hide toolbar + clear selection (mobile) ── */
    (function () {
      var dismissEl = document.getElementById('gra-fab-dismiss');
      if (!dismissEl) return;
      function doDismiss(e) {
        e.preventDefault(); e.stopPropagation();
        hideActions();
        _selRange = null; _selText = ''; _selRect = null;
        if (window.getSelection) {
          var s = window.getSelection();
          if (s && s.removeAllRanges) s.removeAllRanges();
        }
      }
      dismissEl.addEventListener('touchend', doDismiss, { passive: false });
      dismissEl.addEventListener('click', doDismiss);
    }());

    /* Feedback composer */
    $fbIssueType.on('change', function(){ $fbSubmit.prop('disabled', !$(this).val()); });
    $('#gra-fb-cancel, #gra-fb-close').on('click', closeFeedbackComposer);
    $fbSubmit.on('click', submitFeedback);
    $fbText.on('keydown', function(e){ if(e.key==='Escape') closeFeedbackComposer(); });

    /* Note composer */
    $ntInput.on('input', function(){ $ntSubmit.prop('disabled', !$(this).val().trim()); });
    $('#gra-nt-cancel').on('click', closeNoteComposer);
    $ntSubmit.on('click', submitNote);
    $ntInput.on('keydown', function(e){
      if ((e.ctrlKey||e.metaKey) && e.key==='Enter') submitNote();
      if (e.key==='Escape') closeNoteComposer();
    });

    /* Bookmark composer */
    $('#gra-bm-cancel').on('click', closeBookmarkComposer);
    $bmSubmit.on('click', submitBookmark);
    $bmInput.on('keydown', function(e){
      if (e.key==='Enter') submitBookmark();
      if (e.key==='Escape') closeBookmarkComposer();
    });

    /* Panel */
    $('#gra-panel-close').on('click', closePanel);
    $backdrop.on('click touchend', function(e){
      e.preventDefault();
      if ($fbComposer.hasClass('gra-composer-visible')) closeFeedbackComposer();
      else if ($ntComposer.hasClass('gra-composer-visible')) closeNoteComposer();
      else if ($bmComposer.hasClass('gra-composer-visible')) closeBookmarkComposer();
      else closePanel();
    });
    $tabNotes.on('click', function(){ switchTab('notes'); });
    $tabBookmarks.on('click', function(){ switchTab('bookmarks'); });
    // NEW: third tab.
    $tabFootnotes.on('click', function(){ switchTab('footnotes'); });

    $paneNotes.on('click', '.gra-note-card', function(e){
      if ($(e.target).hasClass('gra-note-del')) return;
      var id = $(this).attr('data-gra-id');
      if (id) { closePanel(); scrollToHighlight(id); }
    });
    $paneNotes.on('click', '.gra-note-del', function(e){
      e.stopPropagation();
      var id = $(this).attr('data-del-id');
      if (id) deleteNote(id);
    });
    $paneBookmarks.on('click', '.gra-bookmark-card', function(e){
      if ($(e.target).hasClass('gra-bookmark-del')) return;
      var id = $(this).attr('data-gra-id');
      if (id) { closePanel(); scrollToHighlight(id); }
    });
    $paneBookmarks.on('click', '.gra-bookmark-del', function(e){
      e.stopPropagation();
      var id = $(this).attr('data-del-id');
      if (id) deleteBookmark(id);
    });
    // CHANGED: footnote highlights now carry data-gra-id (see quickedit.js's
    // redesign — plain highlight span, no href/marker element anymore), so
    // this can reuse the EXACT same scrollToHighlight(id) helper Notes/
    // Bookmarks already use below, instead of custom href-parsing logic
    // that broke every time the marker format changed.
    $paneFootnotes.on('click', '.gra-footnote-card', function(){
      var id = $(this).attr('data-gra-id');
      if (id) { closePanel(); scrollToHighlight(id); }
    });

    $(CONTENT_SEL).on('click', '.gra-note-highlight', function(){
      var id = $(this).attr('data-gra-id');
      openPanel('notes');
      setTimeout(function(){
        var $card = $paneNotes.find('[data-gra-id="'+id+'"]');
        if ($card.length) {
          $card.addClass('gra-card-active');
          $card[0].scrollIntoView({behavior:'smooth', block:'nearest'});
          setTimeout(function(){ $card.removeClass('gra-card-active'); }, 2000);
        }
      }, 100);
    });
    $(CONTENT_SEL).on('click', '.gra-bookmark-highlight', function(){
      var id = $(this).attr('data-gra-id');
      openPanel('bookmarks');
      setTimeout(function(){
        var $card = $paneBookmarks.find('[data-gra-id="'+id+'"]');
        // CHANGED: was missing the gra-card-active flash entirely (only
        // notes and footnotes had it) — a separate inconsistency from
        // the CSS gap below. Now matches the other two exactly.
        if ($card.length) {
          $card.addClass('gra-card-active');
          $card[0].scrollIntoView({behavior:'smooth', block:'nearest'});
          setTimeout(function(){ $card.removeClass('gra-card-active'); }, 2000);
        }
      }, 100);
    });
    // CHANGED: was .gra-qe-footnote-ref a with e.preventDefault() (it used
    // to be a real link). Now a plain highlight span, same as notes/
    // bookmarks — no href to prevent, id read directly via data-gra-id,
    // and the handler is now identical in shape to the two right above it.
    $(CONTENT_SEL).on('click', '.gra-qe-footnote-highlight', function(){
      var id = $(this).attr('data-gra-id');
      openPanel('footnotes');
      setTimeout(function(){
        var $card = $paneFootnotes.find('[data-gra-id="'+id+'"]');
        if ($card.length) {
          $card.addClass('gra-card-active');
          $card[0].scrollIntoView({behavior:'smooth', block:'nearest'});
          setTimeout(function(){ $card.removeClass('gra-card-active'); }, 2000);
        }
      }, 100);
    });

    // NEW: cross-document links from QuickEdit's Link picker. No real
    // href is ever saved (confirmed directly: MediaWiki's sanitizer
    // escapes <a href> into visible literal text on this wiki, even for
    // a full absolute URL) — the target lives in data-gr-href instead,
    // and this handler is what actually performs the navigation.
    $(CONTENT_SEL).on('click', '.gr-crosslink', function(){
      var href = $(this).attr('data-gr-href');
      if (!href) return;
      var newWin = window.open(href, '_blank');
      if (newWin) newWin.opener = null; // more reliable cross-browser than relying on window.open's features string
    });

    $(document).on('keydown', function(e){
      if (e.key !== 'Escape') return;
      if ($fbComposer.hasClass('gra-composer-visible')) closeFeedbackComposer();
      else if ($ntComposer.hasClass('gra-composer-visible')) closeNoteComposer();
      else if ($bmComposer.hasClass('gra-composer-visible')) closeBookmarkComposer();
      else closePanel();
    });
  }

  // Re-anchors note highlights from _notes, the way bookmarks have always
  // re-anchored from _bookmarks. This used to read a third store —
  // NT_LS_KEY + '_hl' — holding {id, quote} pairs that _notes already had,
  // and which nothing kept in step once notes could also arrive from the
  // server. The old key is left alone rather than deleted; it is simply no
  // longer consulted.
  function restoreNoteHighlights() {
    _notes.forEach(function(h){
      if (!h.quote || !h.id) return;
      if (document.querySelector('[data-gra-id="'+h.id+'"].gra-note-highlight')) return;
      var needle = h.quote.replace(/…$/,'').trim().slice(0,80);
      if (!needle) return;
      var range = findTextInContent(document.querySelector(CONTENT_SEL), needle);
      if (!range) return;
      var sp = document.createElement('span');
      sp.className = 'gra-note-highlight';
      sp.setAttribute('data-gra-id', h.id);
      try { range.surroundContents(sp); } catch(e){}
    });
  }

  function restoreBookmarkHighlights() {
    _bookmarks.forEach(function(b){
      if (!b.quote) return;
      if (document.querySelector('[data-gra-id="'+b.id+'"].gra-bookmark-highlight')) return;
      var needle = b.quote.replace(/…$/,'').trim().slice(0,60);
      if (!needle) return;
      var found = findTextInContent(document.querySelector(CONTENT_SEL), needle);
      if (!found) return;
      var sp = document.createElement('span');
      sp.className = 'gra-bookmark-highlight';
      sp.setAttribute('data-gra-id', b.id);
      sp.setAttribute('data-gra-name', b.name);
      try { found.surroundContents(sp); } catch(e){}
    });
  }

  function findTextInContent(root, needle) {
    if (!root || !needle) return null;
    var text = root.textContent || '';
    var idx  = text.indexOf(needle);
    if (idx < 0) return null;
    var iter = document.createNodeIterator(root, NodeFilter.SHOW_TEXT, null, false);
    var pos = 0, node, startNode, startOffset, endNode, endOffset;
    while ((node = iter.nextNode())) {
      var len = node.nodeValue.length;
      if (!startNode && pos + len > idx) { startNode = node; startOffset = idx - pos; }
      var endIdx = idx + needle.length;
      if (startNode && pos + len >= endIdx) { endNode = node; endOffset = endIdx - pos; break; }
      pos += len;
    }
    if (!startNode || !endNode) return null;
    try {
      var r = document.createRange();
      r.setStart(startNode, startOffset);
      r.setEnd(endNode, endOffset);
      return r;
    } catch(e){ return null; }
  }

  // REMOVED: injectAnnotationCss(), which JS-injected a defensive
  // .gra-card-active/.gra-hl-active rule here as a guess, since the real
  // gr_annotations.css wasn't available at the time. Now that it is,
  // confirmed precisely: .gra-hl-active already had working CSS for
  // notes and footnotes (that JS rule was unneeded there, though it did
  // fill a real gap for bookmarks' .gra-hl-active, which had none at
  // all) — and .gra-card-active genuinely only had a rule for
  // .gra-note-card, nothing for bookmark or footnote cards, confirming
  // that diagnosis exactly. The JS version also risked overriding the
  // existing, working note-card style with !important. Fixed directly
  // in gr_annotations.css instead — see that file.

  $(function() {
    _mobile = window.innerWidth < 768 || 'ontouchstart' in window;
    window.addEventListener('resize', function(){
      _mobile = window.innerWidth < 768 || 'ontouchstart' in window;
    });
    buildDom();
    wireEvents();

    function paint() {
      try { restoreNoteHighlights(); } catch(e){}
      try { restoreBookmarkHighlights(); } catch(e){}
      if ($panel.hasClass('gra-panel-open')) switchTab(_activeTab);
      updateBadge();
    }

    // The cache is in place the moment load() returns, so the first paint
    // still happens on the old 500 ms timer and feels unchanged. The
    // server's answer arrives later and paints again — highlights it adds
    // are skipped if already present, so the second pass only fills in what
    // the cache did not have: a note made on the phone, or in another
    // browser.
    var loaded = Store.load();
    setTimeout(paint, 500);
    loaded.always(paint);
  });

  // Small count on the toggle, so a reader can tell there is something in
  // the panel without opening it — worth having now that notes can arrive
  // from another device.
  function updateBadge() {
    var n = _notes.length + _bookmarks.length;
    var $b = $('#gra-toggle-badge');
    if (!$b.length) return;
    $b.text(n > 99 ? '99+' : String(n)).css('display', n ? 'block' : 'none');
  }

}() );