diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..8ae48a5
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,15 @@
+# Python
+__pycache__/
+*.pyc
+*.pyo
+
+# nanobanana runtime output / generated visualizations
+output/
+
+# env / secrets
+.env
+*.key
+
+# OS
+Thumbs.db
+.DS_Store
diff --git a/kintex-harness-v1.0.1.zip b/kintex-harness-v1.0.1.zip
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index 0000000..8219eb8
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diff --git a/output/visualizations/_smoke_wiring.png b/output/visualizations/_smoke_wiring.png
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index eb650e0..0000000
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diff --git a/output/visualizations/_smoke_wiring.png.meta.json b/output/visualizations/_smoke_wiring.png.meta.json
deleted file mode 100644
index 2a5c0a2..0000000
--- a/output/visualizations/_smoke_wiring.png.meta.json
+++ /dev/null
@@ -1,15 +0,0 @@
-{
-  "generated_at": "2026-07-11T07:32:19.154568+00:00",
-  "render_path": "backend_raster_composite",
-  "kinds": [
-    "power",
-    "network"
-  ],
-  "rendered_counts": {
-    "power": 1,
-    "network": 1
-  },
-  "px_per_m": 40,
-  "watermark_required": true,
-  "watermark_text": "AI 생성 예상 이미지 — 실제 시공 결과와 다를 수 있음"
-}
\ No newline at end of file
diff --git a/tools/nanobanana/__pycache__/client.cpython-314.pyc b/tools/nanobanana/__pycache__/client.cpython-314.pyc
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