4.99.1: the conversation's head follows the navbar as it slides away on a phone (#259)

ddiff --git a/CHANGELOG.md b/CHANGELOG.md
iindex ae5900d..1df593d 100644
---- a/CHANGELOG.md
++++ b/CHANGELOG.md
@@@ -4,6 +4,13 @@ All notable changes to `openvibe-shared`. Versions follow [semver](https://semve
  breaking change to any exported module, browser global or served file name is a new major.
  A release is the git tag `vX.Y.Z`; consumers pin the tag's tarball (see README).
  
++## 4.99.1 — 2026-11-02
++
++- **The conversation's head follows the navbar on a phone.** The navbar slides away while you read down. The thread's
++  sticky head stayed where the bar had been, leaving a gap with the thread showing through. ov-thread.js now finds the
++  bar on each measure (navbar.js may draw it after the kit starts) and measures again once the slide ends.
++- docs/thread.md: `OVThread.tool` and `toolDone` take the tool call's `key`.
++
  ## 4.99.0 — 2026-11-02
  
  - **The conversation UI shows several agents, approvals and what the work produced** (plan L55 C4 stage 3, for Codes):
ddiff --git a/README.md b/README.md
iindex 0acbcca..52ab177 100644
---- a/README.md
++++ b/README.md
@@@ -2,7 +2,7 @@
  
  > Versioned UI, the OpenVibe Frame (the navbar, footer and "shipped" views every site sits in), SEO, legal and release-client packages every OpenVibe site renders.
  
--**Status:** alpha, v4.99.0 (every release is a tag; see [CHANGELOG.md](CHANGELOG.md)). Every deployed
++**Status:** alpha, v4.99.1 (every release is a tag; see [CHANGELOG.md](CHANGELOG.md)). Every deployed
  consumer installs a tagged release and none keeps a vendored copy
  ([docs/migration-plan.md](docs/migration-plan.md) is done); each repository's `package.json` names
  the tag it pins.
ddiff --git a/STATUS.json b/STATUS.json
iindex 724db4d..398e486 100644
---- a/STATUS.json
++++ b/STATUS.json
@@@ -4,7 +4,7 @@
    "code": true,
    "wave": "W2",
    "package": "openvibe-shared",
--  "version": "4.99.0",
++  "version": "4.99.1",
    "plan": "OpenVibe End-to-End Realignment & Implementation Plan, revision 3 (20 Sep 2026)",
    "deployed": false,
    "deployment": "none of its own: a package released as git tags; OpenVibe.Network serves /shared/* from its pinned tag, and a site can serve its own pinned copy (openvibe-shared/serve)",
ddiff --git a/docs/thread.md b/docs/thread.md
iindex 75a457b..c689ad4 100644
---- a/docs/thread.md
++++ b/docs/thread.md
@@@ -63,8 +63,8 @@ OVThread.live(id, 'Reading');  // the working turn's live line
  OVThread.work(id, rowHtml);    // a row in its work list
  OVThread.replace(id, html);    // the finished turn; its answer types in, word by word
  OVThread.reveal(answerEl);     // the same reveal, for an answer a site draws itself
--OVThread.tool(id, { name: 'Bash', input: 'npm test', icon: 'run' });  // a running tool row, built from text
--OVThread.toolDone(id, ok);     // the last running tool row finished (false: it failed)
++OVThread.tool(id, { name: 'Bash', input: 'npm test', icon: 'run', key });  // a running tool row, built from text
++OVThread.toolDone(id, ok, key);  // that tool's row finished (key: the tool call's id); false: it failed, null: no result
  ```
  
  A site renders those strings on the server (`GET /chat/turn/:id`, as Actor does) or in the page. The helpers keep the
ddiff --git a/ov-thread.js b/ov-thread.js
iindex 840df83..2cccaa5 100644
---- a/ov-thread.js
++++ b/ov-thread.js
@@@ -230,16 +230,21 @@
              box.dataset.ovtReady = '1';
              var head = q(box, '[data-ovt-head]');
  
--            // Under the navbar: the sticky head and the chats column follow its bottom edge.
--            var nav = document.querySelector('.openvibe-navbar') || document.getElementById('navbar-mount');
--            var topWas = -1, ticking = false;
++            // Under the navbar: the sticky head and the chats column follow its bottom edge. The bar is found on each
++            // measure (navbar.js may draw it after this runs), and measured again once its slide ends: on a phone it
++            // slides away while reading down (.32 s), and the head then moves up to the top instead of leaving a gap.
++            var topWas = -1, ticking = false, trail = 0;
              function measure() {
                  ticking = false;
++                var nav = document.querySelector('.openvibe-navbar') || document.getElementById('navbar-mount');
                  var b = nav && nav.getBoundingClientRect ? Math.max(0, Math.round(nav.getBoundingClientRect().bottom || 0)) : 0;
                  if (b !== topWas) { topWas = b; box.style.setProperty('--ovt-top', b + 'px'); }
                  if (head) head.classList.toggle('is-stuck', root.scrollY > 8);
              }
--            function onScroll() { if (!ticking) { ticking = true; (root.requestAnimationFrame || setTimeout)(measure); } }
++            function onScroll() {
++                if (!ticking) { ticking = true; (root.requestAnimationFrame || setTimeout)(measure); }
++                clearTimeout(trail); trail = setTimeout(measure, 380);
++            }
              measure();
              root.addEventListener('scroll', onScroll, { passive: true });
              root.addEventListener('resize', onScroll);
ddiff --git a/package.json b/package.json
iindex e46dce3..b9652dd 100644
---- a/package.json
++++ b/package.json
@@@ -1,6 +1,6 @@
  {
    "name": "openvibe-shared",
--  "version": "4.99.0",
++  "version": "4.99.1",
    "description": "Shared navbar, footer, themes, icons, legal pages, SEO, auth and analytics for every OpenVibe site",
    "main": "index.js",
    "bin": {