100%/A: S5F7/F8 list enabled alarms

Closes the small remaining hole in Alarm Management.  S5F7 is
header-only; S5F8 has the same wire shape as S5F6 (vector of
<L,3 <B ALCD> <U4 ALID> <A ALTX>>) but only includes alarms whose
enabled flag is set.  Codegen handles both as a list_of with
struct_name=AlarmListing; server pre-computes the per-row ALCD from
(severity_category, active state) before passing the rows in.

COMPLIANCE.md: Alarm Management Additional capability flips ✅.

Tests: 78 cases / 454 assertions.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

COMPLIANCE.md

@@ -84,7 +84,7 @@ Legend:
 | Variable Data Collection              | ✅     | E30 §6.11| —        | `DVID` table; values resolvable via `vid_value`. |
 | Trace Data Collection                 | ⬜     | E30 §6.12| S2F23/F24, S6F1/F2 | Not implemented. |
 | Status Data Collection                | ✅     | E30 §6.13| S1F3/F4, S1F11/F12 | |
-| Alarm Management                      | 🟡     | E30 §6.14| S5F1/F2, S5F3/F4, S5F5/F6 | F1–F6 implemented; **S5F7/F8 list-enabled-alarms not implemented**. ALCD bit-7 set/cleared, lower-7 category supported. |
+| Alarm Management                      | ✅     | E30 §6.14| S5F1/F2, S5F3/F4, S5F5/F6, S5F7/F8 | Full set: emit, ack, enable/disable, list directory, list enabled. ALCD bit-7 set/cleared, lower-7 category. |
 | Remote Control                        | ✅     | E30 §6.15| S2F41/F42 | Full HCACK 7-value enum + per-parameter CPACKs. |
 | Equipment Constants                   | ✅     | E30 §6.16| S2F13/F14, S2F15/F16, S2F29/F30 | **EAC range validation against min/max is NOT performed** — set always accepts a known ECID; this would reject out-of-range with EAC=4 in a conformant equipment. |
 | Process Program Management            | 🟡     | E30 §6.17| S7F3/F4, S7F5/F6, S7F19/F20 | Unformatted PP send/request/list. **No E42 enhanced PP**, **no S7F23/F24/F25/F26 PP verify**, **no PPID validation**. PPBODY treated as raw bytes (Binary item). |
@@ -123,7 +123,7 @@ Legend:
 | S5F1 / S5F2      | E→H       | ✅     | `messages.hpp` | ✅ round-trip |
 | S5F3 / S5F4      | H→E       | ✅     | `messages.hpp` | ✅ round-trip |
 | S5F5 / S5F6      | H→E       | ✅     | `messages.hpp` | ✅ in demo |
-| S5F7 / S5F8      | H→E       | ⬜     | —              | — |
+| S5F7 / S5F8      | H→E       | ✅     | catalog        | ✅ round-trip |
 | S6F1 / S6F2      | E→H       | ⬜     | —              | — |
 | S6F5 / S6F6      | H↔E       | ⬜     | —              | multi-block |
 | S6F7 / S6F8      | H↔E       | ⬜     | —              | multi-block |