ci: add changeset and knip ignore for lzma-native

Author: Anshumancanrock

.changeset/quick-maps-marry.md

@@ -0,0 +1,9 @@
+---
+"nostream": minor
+---
+
+Add gzip and xz compression support to event import/export flows.
+
+- Export supports `--compress`/`-z` with `--format gzip|gz|xz`.
+- Import auto-detects compressed input by extension and magic bytes and decompresses in a stream pipeline.
+- Includes docs updates and unit/integration test coverage for compression paths.

.knip.json

@@ -8,6 +8,9 @@
   "project": [
     "src/**/*.ts"
   ],
+  "ignoreDependencies": [
+    "lzma-native"
+  ],
   "ignoreFiles": [],
   "commitlint": false,
   "eslint": false,