diff --git a/.gitea/workflows/agent.yml b/.gitea/workflows/agent.yml
index daf278e..ca0431a 100644
--- a/.gitea/workflows/agent.yml
+++ b/.gitea/workflows/agent.yml
@@ -437,41 +437,48 @@ jobs:
 
           prbody=$(printf '%s\n\n---\nResolves #%s · 🤖 @%s' "$prdesc" "$NUM" "$NAME")
           owner=${GITHUB_REPOSITORY%%/*}
-          mapfile -t brs < <(git ls-remote --heads origin "ai/issue-$NUM" "ai/issue-$NUM-*" 2>/dev/null \
-                             | sed -E 's#.*refs/heads/##' | sort -u)
 
-          links=""; count=0
-          for br in "${brs[@]}"; do
-            [ -z "$br" ] && continue
-            ahead=$(git rev-list --count "origin/main..origin/$br" 2>/dev/null || echo 0)
-            [ "${ahead:-0}" -eq 0 ] && continue
-            # NOTE: Gitea ignores the ?head= filter, so match the head branch client-side.
-            url=$(curl -sS "${hdr[@]}" "$API/pulls?state=open&limit=50" \
-                  | jq -r --arg br "$br" 'if type=="array" then (map(select(.head.ref==$br)) | .[0].html_url // empty) else empty end' 2>/dev/null)
-            if [ -z "$url" ]; then
-              slug=${br#ai/issue-$NUM}; slug=${slug#-}
-              [ -z "$slug" ] && title="@$NAME: $TITLE" || title="@$NAME: $slug"
-              resp=$(curl -sS -X POST "${hdr[@]}" "$API/pulls" \
-                -d "$(jq -nc --arg t "$title" --arg h "$br" --arg n "$NUM" --arg b "$prbody" \
-                      '{title:$t, head:$h, base:"main", body:$b}')")
-              echo "PR create ($br): $resp"
-              url=$(printf '%s' "$resp" | jq -r '.html_url // empty' 2>/dev/null)
-            fi
-            [ -n "$url" ] && { links="$links\n- $url"; count=$((count+1)); }
-          done
-
-          if [ "$count" -eq 0 ]; then
-            # No branch had changes — a plan / questions / analysis only.
+          # One PR per run: publish ONLY this run's own branch ($BRANCH), never sibling
+          # ai/issue-N-* branches. This removes the multi-PR ambiguity that left the
+          # activity log stranded on the triggering issue instead of the PR thread.
+          br="$BRANCH"
+          ahead=$(git rev-list --count "origin/main..origin/$br" 2>/dev/null || echo 0)
+          if [ "${ahead:-0}" -eq 0 ]; then
+            # No changes on this branch — a plan / questions / analysis only.
             post "$(printf '🤖 **@%s**\n\n%s' "$NAME" "$reply")"
             exit 0
           fi
 
+          # NOTE: Gitea ignores the ?head= filter, so match the head branch client-side.
+          resp=$(curl -sS "${hdr[@]}" "$API/pulls?state=open&limit=50" \
+                | jq -r --arg br "$br" 'if type=="array" then (map(select(.head.ref==$br)) | .[0] // empty) else empty end' 2>/dev/null)
+          url=$(printf '%s' "$resp" | jq -r '.html_url // empty' 2>/dev/null)
+          prnum=$(printf '%s' "$resp" | jq -r '.number // empty' 2>/dev/null)
+          if [ -z "$url" ]; then
+            title="@$NAME: $TITLE"
+            resp=$(curl -sS -X POST "${hdr[@]}" "$API/pulls" \
+              -d "$(jq -nc --arg t "$title" --arg h "$br" --arg b "$prbody" \
+                    '{title:$t, head:$h, base:"main", body:$b}')")
+            echo "PR create ($br): $resp"
+            url=$(printf '%s' "$resp" | jq -r '.html_url // empty' 2>/dev/null)
+            prnum=$(printf '%s' "$resp" | jq -r '.number // empty' 2>/dev/null)
+          fi
+          [ -z "$url" ] && { echo "PR open/lookup failed for $br — posting reply on issue instead"; post "$(printf '🤖 **@%s**\n\n%s' "$NAME" "$reply")"; exit 0; }
+
+          # Posts to the PR thread when we have a PR number, else to the origin issue ($NUM).
+          prpost() {
+            local n="$1"; shift; local t="$NUM"
+            [ -n "$n" ] && [ "$n" != "$NUM" ] && t="$n"
+            echo "posting to #$t"
+            curl -sS -w 'comment -> HTTP %{http_code}\n' -X POST "${hdr[@]}" \
+              "$API/issues/$t/comments" -d "$(jq -nc --arg b "$1" '{body:$b}')"
+          }
+
           if [ "$NEW" = "true" ]; then
-            noun="PR ready for review"; [ "$count" -gt 1 ] && noun="PRs ready for review (merge sequentially)"
-            post "$(printf '🤖 **@%s** — ✅ %s %s — @ffaerber please review & merge:%b' "$NAME" "$count" "$noun" "$links")"
+            prpost "$prnum" "$(printf '🤖 **@%s** — ✅ PR ready for review — @ffaerber please review & merge:\n- %s' "$NAME" "$url")"
           else
             # Resume (comment is on a PR thread): include the write-up here too.
-            post "$(printf '🤖 **@%s** — updated %s branch/PR:%b\n\n%s' "$NAME" "$count" "$links" "$prdesc")"
+            prpost "$prnum" "$(printf '🤖 **@%s** — updated branch/PR:\n- %s\n\n%s' "$NAME" "$url" "$prdesc")"
           fi
 
           # Post the agent's activity trail (tool calls + reasoning) as a separate comment so
@@ -480,7 +487,7 @@ jobs:
           if [ -s /tmp/activity_log.md ]; then
             entries=$(wc -l < /tmp/activity_log.md 2>/dev/null || echo 0)
             log=$(cat /tmp/activity_log.md)
-            post "$(printf '🤖 **@%s** — activity log (%s entries):\n<details>\n<summary>tool calls & reasoning</summary>\n\n%s\n\n</details>' "$NAME" "$entries" "$log")"
+            prpost "$prnum" "$(printf '🤖 **@%s** — activity log (%s entries):\n<details>\n<summary>tool calls & reasoning</summary>\n\n%s\n\n</details>' "$NAME" "$entries" "$log")"
           fi
 
       - name: Mark done with 🚀 (remove 👀)