docs(release-notes): v1.7.43-alpha bullet for AIUI preservation fix

neode-ui/src/views/settings/AccountInfoSection.vue

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                   <p>Avatars no longer crash the backend on certain identities. The hue and accent colour computation multiplied a 16-bit seed byte by 360, which overflows for any seed value of 182 or greater. Debug builds panicked outright, release builds silently wrapped and drew the wrong colour. The math now runs in 32-bit space so every possible seed renders correctly.</p>
                   <p>Mesh outbox entries with a zero-second TTL now expire immediately instead of lingering forever. The expiry check used a strict greater-than comparison, so a message whose age had not yet ticked over one second was considered live even when its TTL was set to zero. It now uses greater-or-equal, matching the intuitive meaning of TTL.</p>
                   <p>The pinned-image parser no longer treats arbitrary environment-style keys as container images. The loader retained every key ending in _IMAGE regardless of the value, which meant a stray variable like NOT_AN_IMAGE="something" would be registered as a pinned image and pollute version checks. The parser now requires the value to look like an actual image reference (a registry path with a tag) before accepting it.</p>
+                  <p>The AI Assistant tab no longer disappears after updates. Self-updates rebuilt the frontend from source and then used rsync --delete to swap it into place while passing --exclude aiui to preserve the existing bundle; that worked only as long as a previous install had already put AIUI on disk. Any node whose web UI directory got replaced wholesale (including by a manual redeploy of just the dist tarball) lost AIUI entirely and the AI Assistant tab fell through to a "needs to be enabled" placeholder. Every update and every ISO build now ships the canonical AIUI bundle from demo/aiui in the repo, so AIUI is a first-class versioned part of each release and cannot be wiped by a swap.</p>
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