diff --git a/.gitignore b/.gitignore
index a3fd58f..1cc5456 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,6 +24,11 @@ Cargo.lock.bak
 *.bak
 *.tmp
 
+# ---- Claude Code project-local state ----
+# `.claude/` holds per-project scheduled-task locks, agent state, etc.
+# It's user/host-specific and not part of the codebase.
+.claude/
+
 # ---- OS ----
 Thumbs.db
 Desktop.ini
@@ -43,6 +48,16 @@ Desktop.ini
 # design/60-roadmap.md M0; the actual symlink tree is not checked in.
 /rust/tests/fixtures/
 
+# ---- Ad-hoc debug captures from manual asb-relay / trace runs ----
+# These appear at the repo root when debugging live wire issues with
+# `examples/asb-relay.rs` or `MX_ASB_TRACE_REPLY=1`. They're transient
+# per-session evidence — promote anything worth keeping into
+# `captures/` or `analysis/` instead.
+/rust-cs.txt
+/rust-sc.txt
+/rust.log
+/rust-trace-*.txt
+
 # ---- Plan files (project-local Claude Code plan staging) ----
 # These live under the user's ~/.claude/plans/ scope but appear at the
 # project root if accidentally created.