diff --git a/.gitignore b/.gitignore
index 5ebe0366..b0ba50a2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,6 +15,8 @@ _merge_parsed.json
 .huskies_port
 .huskies/bot.toml.bak
 .huskies/build_hash
+# Phantom 0-byte pipeline.db sometimes appears at repo root from old code; canonical DB lives at .huskies/pipeline.db
+/pipeline.db
 
 # Per-worktree planning file (written by coder agents, must never reach squash commits)
 PLAN.md