Restructure repository into output workspace

output/docs/LOCAL_TESTING.md

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+# Local Test Harness
+
+All verification runs through the wrapper scripts under `output/run/`, ensuring every command executes in Docker.
+
+## Devtools checks
+
+Use `./output/run/dev.sh` for linting and documentation updates:
+
+```bash
+./output/run/dev.sh python output/scripts/lint_repo.py --slug apache-apisix --strict
+./output/run/dev.sh python output/scripts/generate_status.py --preserve-timestamp
+```
+
+## Packaging shell
+
+Invoke `./output/run/packager.sh` (optionally with `BUILD=1`) when you need the Cloudron CLI to build, install, or push packages.
+
+## CI parity
+
+The Gitea workflow calls the same commands via the devtools image. To mimic it locally, run the lint/status commands above followed by any smoke tests inside the packager shell.