diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5e1ed0f..cf4ed70 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,16 +9,6 @@ former name, "Daybook".)
 
 _Nothing yet._
 
-## [0.4.1] — 2026-09-05
-
-### Changed
-- Live feed updates now also keep the **source sidebar** current: as new posts
-  arrive, per-source and total unread counts bump, and a source posting for the
-  first time is added to the list (alphabetically) — all derived client-side
-  from the polled rows, no extra request. Sources added live stay
-  keyboard-navigable. Caveat: while filtered to a single source, *other* new
-  sources still only appear on reload (the poll is scoped to the selected view).
-
 ## [0.4.0] — 2026-09-04
 
 ### Added
@@ -165,8 +155,7 @@ First tagged release.
 - Dockerised (Gunicorn + whitenoise), SQLite, `git`-based deploy with a
   runbook (`deploy/cloud_agent_deploy.md`) and health check.
 
-[Unreleased]: https://git.cygnus.systems/peter/daybook/compare/v0.4.1...HEAD
-[0.4.1]: https://git.cygnus.systems/peter/daybook/compare/v0.4.0...v0.4.1
+[Unreleased]: https://git.cygnus.systems/peter/daybook/compare/v0.4.0...HEAD
 [0.4.0]: https://git.cygnus.systems/peter/daybook/compare/v0.3.2...v0.4.0
 [0.3.2]: https://git.cygnus.systems/peter/daybook/compare/v0.3.1...v0.3.2
 [0.3.1]: https://git.cygnus.systems/peter/daybook/compare/v0.3.0...v0.3.1
diff --git a/daybook_project/__init__.py b/daybook_project/__init__.py
index 53f5709..bc935aa 100644
--- a/daybook_project/__init__.py
+++ b/daybook_project/__init__.py
@@ -1,4 +1,4 @@
 # Single source of truth for the app version. Bump this, commit, then tag the
 # commit `vX.Y.Z` and deploy. Surfaced on Settings -> About and in
 # GET /api/capabilities ("version").
-__version__ = "0.4.1"
+__version__ = "0.4.0"
diff --git a/templates/artifacts/feed.html b/templates/artifacts/feed.html
index 78764fe..a240ebc 100644
--- a/templates/artifacts/feed.html
+++ b/templates/artifacts/feed.html
@@ -195,8 +195,7 @@
       const artifactList = document.querySelector("[data-artifact-list]");
       // Rows grow as older pages load, so always read them live rather than caching an array.
       const allRows = () => Array.from(document.querySelectorAll(".artifact-row"));
-      // Live-queried so sources added by live updates are keyboard-navigable too.
-      const sourceLinks = () => Array.from(document.querySelectorAll(".source-link"));
+      const sourceLinks = Array.from(document.querySelectorAll(".source-link"));
       const csrfToken = document.querySelector("[name=csrfmiddlewaretoken]")?.value || "";
 
       const escapeHtml = (value) => value.replace(/[&<>"]/g, (character) => ({
@@ -384,66 +383,6 @@
         });
       };
 
-      const findSourceLink = (name) =>
-        sourceLinks().find((link) => link.querySelector(".source-name")?.textContent.trim() === name);
-
-      const bumpSourceBadge = (link, delta) => {
-        let badge = link.querySelector(".source-count");
-        if (!badge) {
-          badge = document.createElement("span");
-          badge.className = "source-count";
-          badge.textContent = "0";
-          link.appendChild(badge);
-        }
-        badge.textContent = String((Number(badge.textContent) || 0) + delta);
-      };
-
-      const addSourceLink = (name, count) => {
-        const params = new URLSearchParams();
-        params.set("source", name);
-        if (feed.dataset.selectedLabel) params.set("label", feed.dataset.selectedLabel);
-        if (feed.dataset.selectedKind) params.set("kind", feed.dataset.selectedKind);
-        if (feed.dataset.titleQuery) params.set("q", feed.dataset.titleQuery);
-        params.set("view", feed.dataset.selectedView || "rendered");
-        params.set("preview", "none");
-
-        const link = document.createElement("a");
-        link.className = "source-link";
-        link.href = `?${params.toString()}`;
-        link.innerHTML =
-          `<span class="source-name">${escapeHtml(name)}</span>` +
-          `<span class="source-count">${count}</span>`;
-
-        // Insert alphabetically among the per-source links (after "All sources").
-        const list = document.querySelector(".source-list");
-        const others = sourceLinks().filter(
-          (l) => l.querySelector(".source-name")?.textContent.trim() !== "All sources",
-        );
-        const after = others.find(
-          (l) => (l.querySelector(".source-name")?.textContent.trim() || "") > name,
-        );
-        list.insertBefore(link, after || null);
-      };
-
-      // From the newly-arrived rows: bump each source's unread count (adding a
-      // sidebar entry for a source seen for the first time) plus the total.
-      const registerNewSources = (rows) => {
-        const counts = {};
-        rows.forEach((row) => {
-          const source = row.dataset.source;
-          if (source) counts[source] = (counts[source] || 0) + 1;
-        });
-        let total = 0;
-        Object.entries(counts).forEach(([source, n]) => {
-          total += n;
-          const existing = findSourceLink(source);
-          if (existing) bumpSourceBadge(existing, n);
-          else addSourceLink(source, n);
-        });
-        const allLink = findSourceLink("All sources");
-        if (allLink && total) bumpSourceBadge(allLink, total);
-      };
-
       const renderPreview = (row, pushState = true) => {
         navigationMode = "artifacts";
         markRead(row);
@@ -499,13 +438,12 @@
       };
 
       const moveSource = (direction) => {
-        const links = sourceLinks();
-        if (!links.length) return;
+        if (!sourceLinks.length) return;
         navigationMode = "sources";
         const current = document.querySelector(".source-link.selected");
-        const currentIndex = current ? links.indexOf(current) : 0;
-        const nextIndex = Math.max(0, Math.min(links.length - 1, currentIndex + direction));
-        const nextSource = links[nextIndex];
+        const currentIndex = current ? sourceLinks.indexOf(current) : 0;
+        const nextIndex = Math.max(0, Math.min(sourceLinks.length - 1, currentIndex + direction));
+        const nextSource = sourceLinks[nextIndex];
         if (nextSource && nextSource !== current) window.location.href = nextSource.href;
       };
 
@@ -685,7 +623,6 @@
             node = node.nextElementSibling;
           }
           markArrived(inserted);
-          registerNewSources(inserted);   // update sidebar: counts + any new source
           liveSince = data.newest;
           const dayCount = group.querySelector(".day-separator-count");
           if (dayCount) dayCount.textContent = String((parseInt(dayCount.textContent, 10) || 0) + data.count);