reply-to: gate 13 green (reply forced onto the gateway link); docs/README/CHANGELOG for 14 gates

docs/en/feature-matrix.md

@@ -58,7 +58,7 @@ As of 2026-11-11; source of per-row evidence: `out/test-logs/`,
 
 | Feature | Upstream syntax | Milestone | Status |
 |---|---|---|---|
-| `route-to` / `dup-to` / `reply-to` | `pass in … route-to { 10.0.3.2 } keep state` | M4 | **`route-to` and `dup-to` VERIFIED in lab** (gate `08-routeto.sh`): the packet leaves through the gateway's link instead of the normal egress (proved on the firewall's own interfaces), and `dup-to` keeps the original path while emitting the copy. `reply-to` parses and is stored; gate pending. `fail-to` is **not a keyword in OpenBSD 8.0** (removed upstream), so it is out of scope here. Deviation: the forced nexthop is installed by setting `rt_gw4`/`rt_gw_family` on the looked-up route (Linux only ARPs the gateway when the route declares one). |
+| `route-to` / `dup-to` / `reply-to` | `pass in … route-to { 10.0.3.2 } keep state`, `reply-to { gw }` | M4 | **VERIFIED in lab** — gates `08-routeto.sh` (route-to leaves via the gateway's link, dup-to copies while keeping the flow) and `13-replyto.sh` (the reply of a flow is forced onto the gateway link instead of the client's). Deviation: the forced nexthop is installed by setting `rt_gw4`/`rt_gw_family` on the looked-up route (Linux only ARPs the gateway when the route declares one). `fail-to` is **not a keyword in OpenBSD 8.0** (removed upstream), so it is out of scope. |
 | `divert-to` / `divert` tag | `pass in … divert-to <host> port <n>` | VERIFIED in lab | **Works end-to-end.** The module registers an `AF_DIVERT` socket family (`PF_DIVERT=32`) at runtime — no kernel-tree patch. A `divert-to` rule hands the packet to that family; with no listener the packet is dropped (`divs_noport`, BSD parity); with `tools/pdivert` running the packet is delivered to userspace, rewritten and reinjected (verified with a payload mutation + checksum fix, ping 0% loss). |
 | Queues, default scheduler (priq) | `queue root on wan`, `pfctl -s queue -v` | M5 | COMPILES-untested — `compat/pfk_ifq.c` implements the ifq API with **priq fallback semantics**; `queue` rules parse and load, but packets are not actually shunted through a classful qdisc until M5 |
 | HFSC | `queue on wan { hfsc … }` | M5 | COMPILES-untested — **priq fallback until M5**; `pfsrc/hfsc.c` staged (real OpenBSD 8.0 code) but **not in the module object list** |