ctx v5.30.1

v5.30.1 — foreign-load detector probes on its own cadence (W06-8b)

Patch on v5.30.0. The foreign-load detector (W06-8) only started probe
rounds while /api/status was polled or the dashboard's event stream was
open; headless there were no rounds, no WARN and practically never an
hourly comparison. It now runs its own ticker, bound to the server
lifecycle: one round per status.foreign_load_interval (new hot,
global-only setting, default 5 s) plus one right at each UTC hour
boundary. A status read never starts a round; a round in flight at
shutdown is cancelled and leaves no reading.

• status.foreign_load_interval: >= 1 s; interval + status.foreign_load_timeout
  must stay below 1 hour (V37), otherwise no hour would ever be compared.
  Grace of the hourly check is now interval + timeout.
• docker-compose.yml declares CTX_STATUS_FOREIGN_LOAD_INTERVAL.
• Operators: a probed origin now sees 60/interval GETs per minute on
  /metrics (12/min at the default) whether or not anyone reads the status.

No migration. PR #81, wave report W06-8b.

Installation

With Go:

go install github.com/GottZ/ctx/cmd/ctx@v5.30.1

Binary download:
Download the binary for your platform (and SHA256SUMS), verify both, then install:

gh attestation verify ctx-<os>-<arch> -R GottZ/ctx   # signed build provenance
# offline: add --bundle ctx.intoto.jsonl (Sigstore bundle attached to this release)
sha256sum -c --ignore-missing SHA256SUMS            # download integrity
chmod +x ctx-*
sudo mv ctx-* /usr/local/bin/ctx