test: add ARNES self-tests and docs index

docs/scripts-reference.md

@@ -14,6 +14,8 @@ Interactive bootstrap wizard.
 What it does:
 - asks project metadata
 - chooses default app directory (`project/` by default)
+- defaults Python/Flask projects to `python3 -m unittest discover -s project/tests -v`
+- seeds a minimal bootstrap smoke test under `project/tests/` for Python/Flask
 - writes `harness/project.config.json`
 - creates `scripts/verify.local.sh`
 - can seed one bootstrap ticket
@@ -30,6 +32,7 @@ What it checks:
 - only one feature is `in_progress`
 - done features have all required artifacts, including publish evidence
 - runtime status JSON is valid
+- source-repo self-tests run automatically if `tests/` exists
 - optional local overlay runs if present
 
 ## `python3 scripts/new_ticket.py`