feat: add agent-os bootstrap bundle

.gitignore

@@ -1,8 +1,14 @@
 # Runtime output is generated on the server and must not become source history.
 logs/
 
+# Bootstrap exports are generated bundles. Source lives in bootstrap/templates/.
+bootstrap/exports/
+
 # Claude Code compatibility memory is generated/symlinked runtime state.
 claude-code/
 
 # Operational tools are deployed from the nxm-stacks repository.
 tools/
+# Python cache generated by local validation.
+__pycache__/
+*.pyc