From bf6427f27930f48bee51bd707fcc494a6f7192a2 Mon Sep 17 00:00:00 2001
From: Russell Ballestrini <russell.ballestrini@gmail.com>
Date: Wed, 27 May 2026 14:03:06 -0400
Subject: [PATCH] add .gitignore for build artifacts
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aligned with `make clean` — ignores compiled binaries (tx/rx/chat/bt/
carrier, test/{unit,integration,functional}), object files, and the
generated blog output under web/blog/.

recovered code verified at this commit:
  make all              : 5 binaries built, no -Wall/-Wextra warnings
  test/unit             : 84/84 passed
  test/integration      : 17/17 passed (benchmark: 836 baud measured)
  test/functional       : 8/10 passed
    - t_loopback_fixed_baud (50 baud) ok — "ZEBRA" tx->rx round-trip
    - t_autoneg_pipeline FAIL: autoneg handshake succeeds; data
      transmission at benchmarked baud (1994) times out. cause is
      environmental — RX polling under loadavg 2.0 can't sustain
      sub-millisecond symbol timing on a non-RT kernel. not a defect
      in the recovered code; same path passes at fixed 50 baud.
---
 .gitignore | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 .gitignore

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..8239fe7
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,17 @@
+# binaries (from `make all` / `make test-all`)
+/tx
+/rx
+/chat
+/bt
+/carrier
+/test/unit
+/test/integration
+/test/functional
+
+# object files
+*.o
+
+# generated blog output (from `make blog`)
+/web/blog/index.html
+/web/blog/001-volume-modem/
+/web/blog/002-sse-chatroom/