Addresses review findings on PR #53 (on top of the rebase onto main).
- doctor: stop opening/migrating SQLite. The daemon is the sole store
writer/migrator (architecture.md §7); the CLI must not run migrations or
open a second writer against a DB a live daemon owns. doctor now reports
database-file presence and gains --json.
- stop: only remove running.json when it still belongs to the PID we
stopped, so a concurrent `ao start` that wrote a new run-file is not
clobbered into looking stopped.
- httpd: gate POST /shutdown to loopback callers with no Origin header,
closing the CSRF / DNS-rebinding vector against an unauthenticated,
state-changing endpoint.
- start: detach the spawned daemon into its own session/process group so a
Ctrl-C while `ao start` waits for readiness doesn't also kill it.
- cli: exit 2 for usage errors (bad flag / arg count) vs 1 for runtime
failures.
- daemon: unexport newLogger (only used in-package).
- tests: /shutdown guard (cross-origin + rebinding) and stop run-file
ownership guard.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>