v0.3.1

Release notes — proxy-aiops 0.3.1

Previous release: 0.3.0.

Fixed: the HAProxy branch could not talk to any current HAProxy

Every HAProxy path was hardcoded to Data Plane API v2. HAProxy 3.x ships
Data Plane API v3, which serves only /v3 — every /v2 path returns 404.
So the whole HAProxy platform branch was unusable against a current HAProxy,
failing at the very first probe.

The path registry now holds v3 paths, and the connection probes /v3/info once
per connection and rewrites the prefix to /v2 when it sees an older server.
Both generations work; the probe is cached, so a v3 server costs one extra
request per connection and a v2 server two.

Live-verified: HAProxy

Verified against HAProxy 3.0.25 with Data Plane API v3.0.21: doctor, plus
reads cross-checked against the Data Plane API itself — the configured backend
and its two servers were reported accurately, including serversUp: 0 for
servers pointed at closed ports.

With Traefik 3.2.5 and Caddy 2 verified in 0.3.0, all three platforms are now
live-verified. See docs/VERIFICATION.md — guarded
config writes and TLS/certificate expiry against real certificates remain open.