This makes writes heavier when profile updates happen, but reduces the effort to produce an incremental sync response by not needing to look whether users share rooms.
This allows distinguishing between "a field was updated" or "something else happened". In this case, we want to know if the user left a room. Seeing this action while building the sync response we can then check if the user is still a member of the same rooms as the syncing user, and if not, we can tell the client to remove their profile.
Bumps [idna](https://github.com/kjd/idna) from 3.11 to 3.15.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/kjd/idna/blob/master/HISTORY.md">idna's
changelog</a>.</em></p>
<blockquote>
<h2>3.15 (2026-05-12)</h2>
<ul>
<li>Enforce DNS-length cap on individual labels early in
<code>check_label</code>,
short-circuiting contextual-rule processing for oversized input
while staying compatible with UTS 46 usage.</li>
<li>Tidy core helpers: hoist bidi category sets to module-level
frozensets (avoiding per-codepoint list construction), simplify
length checks, and reuse the shared <code>_unicode_dots_re</code> from
<code>idna.core</code> in the codec module.</li>
<li>Use <code>raise ... from err</code> for proper exception chaining
and
switch internal string formatting to f-strings.</li>
<li>Allow <code>flit_core</code> 4.x in the build backend.</li>
<li>Expand the ruff lint set (flake8-bugbear, flake8-simplify,
pyupgrade, perflint) and apply the surfaced fixes; pin lint CI
to Python 3.14.</li>
<li>Add Dependabot configuration for GitHub Actions.</li>
<li>Convert README and HISTORY from reStructuredText to Markdown.</li>
<li>Reference CVE-2026-45409 for the 3.14 advisory in place of the
initial GHSA identifier.</li>
</ul>
<p>Thanks to Felix Yan, Stan Ulbrych, and metsw24-max for
contributions to this release.</p>
<h2>3.14 (2026-05-10)</h2>
<ul>
<li>Removed opportunity to process long inputs into quadratic
time by rejecting oversize inputs up-front. Closes a bypass
of the CVE-2024-3651 mitigation. [CVE-2026-45409]</li>
</ul>
<p>Thanks to Stan Ulbrych for reporting the issue.</p>
<h2>3.13 (2026-04-22)</h2>
<ul>
<li>Correct classification error for codepoint U+A7F1</li>
</ul>
<h2>3.12 (2026-04-21)</h2>
<ul>
<li>Update to Unicode 17.0.0.</li>
<li>Issue a deprecation warning for the transitional argument.</li>
<li>Added lazy-loading to provide some performance improvements.</li>
<li>Removed vestiges of code related to Python 2 support, including
segmentation of data structures specific to Jython.</li>
</ul>
<p>Thanks to Rodrigo Nogueira for contributions to this release.</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/kjd/idna/commit/af30a092e158181d0b35ac66dfa813788126bdd8"><code>af30a09</code></a>
Release 3.15</li>
<li><a
href="https://github.com/kjd/idna/commit/30314d4628744ca14cf2b5820564e5127a9f86f2"><code>30314d4</code></a>
Pre-release 3.15rc0</li>
<li><a
href="https://github.com/kjd/idna/commit/05d4b219aa9eddc47371fcbd2000f0301016f3e9"><code>05d4b21</code></a>
Merge pull request <a
href="https://redirect.github.com/kjd/idna/issues/237">#237</a> from
kjd/convert-docs-to-markdown</li>
<li><a
href="https://github.com/kjd/idna/commit/2987fdba1962bbb2358399e0084ba062b98a0bee"><code>2987fdb</code></a>
Convert README and HISTORY from reStructuredText to Markdown</li>
<li><a
href="https://github.com/kjd/idna/commit/59fa8002d514bf4a5ce7b58f67b9ec587d53fa9c"><code>59fa800</code></a>
Merge pull request <a
href="https://redirect.github.com/kjd/idna/issues/236">#236</a> from
kjd/dependabot/github_actions/actions-f3e34333ea</li>
<li><a
href="https://github.com/kjd/idna/commit/def69834ced5d4b3c50439d8b99c4c856ec19ca2"><code>def6983</code></a>
Merge branch 'master' into
dependabot/github_actions/actions-f3e34333ea</li>
<li><a
href="https://github.com/kjd/idna/commit/bbd8004a797185d8c56bb555cd5c88fde05e0631"><code>bbd8004</code></a>
Merge pull request <a
href="https://redirect.github.com/kjd/idna/issues/234">#234</a> from
StanFromIreland/patch-1</li>
<li><a
href="https://github.com/kjd/idna/commit/edd07c05024344a6ccb517414ccb36683aee99fc"><code>edd07c0</code></a>
Bump github/codeql-action from 3.35.2 to 4.35.2 in the actions
group</li>
<li><a
href="https://github.com/kjd/idna/commit/5557db030c11bdec50d62aa5f631d705d33ba123"><code>5557db0</code></a>
Merge branch 'master' into patch-1</li>
<li><a
href="https://github.com/kjd/idna/commit/f11746cf4981d25123ef7830d3ee60f07de8ae3d"><code>f11746c</code></a>
Merge pull request <a
href="https://redirect.github.com/kjd/idna/issues/235">#235</a> from
StanFromIreland/patch-2</li>
<li>Additional commits viewable in <a
href="https://github.com/kjd/idna/compare/v3.11...v3.15">compare
view</a></li>
</ul>
</details>
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We don't have federated profile updates (yet), so use a cheaper database call to fetch only local users for the initial sync.
This mirrors incremental sync as currently there are only local profiles being pushed into the profile updates stream table.
Change `get_profile_data_for_users` to compile a friendly dictionary, so we don't need to special if/else case when collecting data for sync. The sync methods just treat every field identically, without displayname or avatar_url having any specific importance.
If we get PUT for profile fields on an instance that isn't the profile updates stream writer, we'll route the request to be finished on the correct stream writer via http replication.
Jason Robinson