diff --git a/dev/dev-poll.sh b/dev/dev-poll.sh
index d056b64..e18bd25 100755
--- a/dev/dev-poll.sh
+++ b/dev/dev-poll.sh
@@ -439,12 +439,14 @@ if [ "$ORPHAN_COUNT" -gt 0 ]; then
     OPEN_PR=true
   fi
 
-  # Skip vision-labeled issues — they are managed by architect agent, not dev-poll
+  # Skip issues owned by non-dev agents (bug-report, vision, prediction, etc.)
+  # See issue #608: dev-poll must only touch issues it could actually claim.
   issue_labels=$(curl -sf -H "Authorization: token ${FORGE_TOKEN}" \
     "${API}/issues/${ISSUE_NUM}" | jq -r '[.labels[].name] | join(",")')
-  if echo "$issue_labels" | grep -q "vision"; then
-    log "issue #${ISSUE_NUM} has 'vision' label — skipping stale detection (managed by architect)"
-    BLOCKED_BY_INPROGRESS=true
+  if ! issue_is_dev_claimable "$issue_labels"; then
+    log "issue #${ISSUE_NUM} has non-dev label(s) [${issue_labels}] — skipping (owned by another agent)"
+    BLOCKED_BY_INPROGRESS=false
+    OTHER_AGENT_INPROGRESS=true
   fi
 
   # Check if issue has an assignee — only block on issues assigned to this agent
@@ -505,20 +507,6 @@ if [ "$ORPHAN_COUNT" -gt 0 ]; then
       fi
     fi
 
-    # Formula guard: formula-labeled issues should not be worked on by dev-agent.
-    # Remove in-progress label and skip to prevent infinite respawn cycle (#115).
-    if [ "$BLOCKED_BY_INPROGRESS" = false ]; then
-      ORPHAN_LABELS=$(echo "$ORPHANS_JSON" | jq -r '.[0].labels[].name' 2>/dev/null) || true
-      SKIP_LABEL=$(echo "$ORPHAN_LABELS" | grep -oE '^(formula|prediction/dismissed|prediction/unreviewed)$' | head -1) || true
-      if [ -n "$SKIP_LABEL" ]; then
-        log "issue #${ISSUE_NUM} has '${SKIP_LABEL}' label — removing in-progress, skipping"
-        IP_ID=$(_ilc_in_progress_id)
-        curl -sf -X DELETE -H "Authorization: token ${FORGE_TOKEN}" \
-          "${API}/issues/${ISSUE_NUM}/labels/${IP_ID}" >/dev/null 2>&1 || true
-        BLOCKED_BY_INPROGRESS=true
-      fi
-    fi
-
     # Check if there's already an open PR for this issue
     if [ "$BLOCKED_BY_INPROGRESS" = false ]; then
       HAS_PR=$(curl -sf -H "Authorization: token ${FORGE_TOKEN}" \
diff --git a/lib/issue-lifecycle.sh b/lib/issue-lifecycle.sh
index ed56c02..743f871 100644
--- a/lib/issue-lifecycle.sh
+++ b/lib/issue-lifecycle.sh
@@ -79,6 +79,27 @@ _ilc_backlog_id()      { _ilc_ensure_label_id "backlog"     "#0075ca"; }
 _ilc_in_progress_id()  { _ilc_ensure_label_id "in-progress" "#1d76db"; }
 _ilc_blocked_id()      { _ilc_ensure_label_id "blocked"     "#e11d48"; }
 
+# ---------------------------------------------------------------------------
+# Labels that indicate an issue belongs to a non-dev agent workflow.
+# Any issue carrying one of these should NOT be touched by dev-poll's
+# stale-detection or orphan-recovery logic.  See issue #608.
+# ---------------------------------------------------------------------------
+_ILC_NON_DEV_LABELS="bug-report vision in-triage prediction/unreviewed prediction/dismissed action formula"
+
+# issue_is_dev_claimable COMMA_SEPARATED_LABELS
+# Returns 0 if the issue's labels are compatible with dev-agent ownership,
+# 1 if any non-dev label is present (meaning another agent owns this issue).
+issue_is_dev_claimable() {
+  local labels="$1"
+  local lbl
+  for lbl in $_ILC_NON_DEV_LABELS; do
+    if echo ",$labels," | grep -qF ",$lbl,"; then
+      return 1
+    fi
+  done
+  return 0
+}
+
 # ---------------------------------------------------------------------------
 # issue_claim — assign issue to bot, add "in-progress" label, remove "backlog".
 # Args: issue_number