diff --git a/.agents/scripts/supervisor/ai-actions.sh b/.agents/scripts/supervisor/ai-actions.sh
index 20bdf84a00..4b35b77fba 100755
--- a/.agents/scripts/supervisor/ai-actions.sh
+++ b/.agents/scripts/supervisor/ai-actions.sh
@@ -163,7 +163,7 @@ _compute_target_state_hash() {
 				local started
 				started=$(printf '%s' "$task_line" | grep -oE 'started:[^ ]+' || echo "")
 				local blocked
-				blocked=$(printf '%s' "$task_line" | grep -oE 'blocked-by:[^ ]+' || echo "")
+				blocked=$(printf '%s' "$task_line" | grep -oE 'blocked-by:t[0-9][^ ]*' || echo "")
 				local pr_field
 				pr_field=$(printf '%s' "$task_line" | grep -oE 'pr:#[0-9]+' || echo "")
 				# t1285: Include [proposed:...] annotations in state hash so
diff --git a/.agents/scripts/supervisor/ai-context.sh b/.agents/scripts/supervisor/ai-context.sh
index 68c8535f73..7b1a9a6c0b 100755
--- a/.agents/scripts/supervisor/ai-context.sh
+++ b/.agents/scripts/supervisor/ai-context.sh
@@ -466,7 +466,7 @@ build_todo_context() {
 			if [[ -n "$task_id" ]] && echo "$_db_done_ids" | grep -qxF "$task_id"; then
 				continue
 			fi
-			blocker=$(echo "$line" | grep -oE 'blocked-by:[^ ]+' | head -1)
+			blocker=$(echo "$line" | grep -oE 'blocked-by:t[0-9][^ ]*' | head -1)
 			output+="- $task_id ($blocker)\n"
 		done <<<"$blocked_tasks"
 	fi
diff --git a/.agents/scripts/supervisor/cron.sh b/.agents/scripts/supervisor/cron.sh
index d574f718cd..49937cc25a 100755
--- a/.agents/scripts/supervisor/cron.sh
+++ b/.agents/scripts/supervisor/cron.sh
@@ -389,9 +389,10 @@ is_task_blocked() {
 	local task_line="$1"
 	local todo_file="$2"
 
-	# Extract blocked-by: field
+	# Extract blocked-by: field — require value to start with a task ID (tNNN)
+	# to avoid matching backtick-quoted mentions like `blocked-by:` in descriptions
 	local blocked_by
-	blocked_by=$(printf '%s' "$task_line" | grep -oE 'blocked-by:[^ ]+' | sed 's/blocked-by://' || true)
+	blocked_by=$(printf '%s' "$task_line" | grep -oE 'blocked-by:t[0-9][^ ]*' | sed 's/blocked-by://' || true)
 
 	if [[ -z "$blocked_by" ]]; then
 		return 1 # No dependencies — not blocked
diff --git a/.agents/scripts/supervisor/sanity-check.sh b/.agents/scripts/supervisor/sanity-check.sh
index 6a075a2da5..d436157286 100755
--- a/.agents/scripts/supervisor/sanity-check.sh
+++ b/.agents/scripts/supervisor/sanity-check.sh
@@ -558,7 +558,7 @@ _execute_sanity_action() {
 		local current_line
 		current_line=$(sed -n "${line_num}p" "$todo_file")
 		local blocked_by
-		blocked_by=$(printf '%s' "$current_line" | grep -oE 'blocked-by:[^ ]+' | head -1 | sed 's/blocked-by://' || echo "")
+		blocked_by=$(printf '%s' "$current_line" | grep -oE 'blocked-by:t[0-9][^ ]*' | head -1 | sed 's/blocked-by://' || echo "")
 
 		if [[ -z "$blocked_by" ]]; then
 			echo "no blocked-by field found"
diff --git a/.agents/scripts/supervisor/todo-sync.sh b/.agents/scripts/supervisor/todo-sync.sh
index 5af0903650..55c253eea4 100755
--- a/.agents/scripts/supervisor/todo-sync.sh
+++ b/.agents/scripts/supervisor/todo-sync.sh
@@ -1174,7 +1174,7 @@ auto_unblock_resolved_tasks() {
 
 		# Extract blocked-by dependencies
 		local blocked_by=""
-		blocked_by=$(printf '%s' "$line" | grep -oE 'blocked-by:[^ ]+' | head -1 | sed 's/blocked-by://' || echo "")
+		blocked_by=$(printf '%s' "$line" | grep -oE 'blocked-by:t[0-9][^ ]*' | head -1 | sed 's/blocked-by://' || echo "")
 		[[ -z "$blocked_by" ]] && continue
 
 		# Check each blocker