docs: record item 4.6 fix, aarch64 BYE crash fix, and DoE campaign in CHANGELOG/ROADMAP

CHANGELOG.md: new 2026-08-18 entry for today's work, plus a post-split
note explaining the branch-tag convention no longer applies (this repo
is now LithosAnanke-only, master as sole production line).

docs/lithosananke/ROADMAP.md: M7.1 section predates all the real
Tripod/Stadium/ACL work and was silently stale -- added a dated
redirect to FABRIC.md/FABRIC-2.md (matching the doc's own existing
pattern for the M8 section) rather than rewriting the whole section.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

docs/lithosananke/ROADMAP.md

@@ -192,7 +192,16 @@ APIC Timer: started
 
 **Goal:** Content-addressed, immutable init capsules for VM birth
 
-**Status:** Design Complete (see [M7.1.md](M7.1.md))
+**Status:** Design Complete (see [M7.1.md](M7.1.md)) — this section predates the actual
+capsule/Tripod/Stadium work and is not current. **See `FABRIC.md`/`FABRIC-2.md` for real
+status** (per `.claude/CLAUDE.md`'s standing redirect) — Tripod (Hera/Hermes/Artemis),
+word-level ACL Phases 1–7, and the Stadium physics-economy migration are all live, not just
+designed. Most recently: item 4.6 (Artemis's block-heat arena migrated to Stadium
+admission-on-allocate) verified passing its 30-rep stress campaign on all three
+architectures 2026-08-18, after fixing a quota-grant ordering bug (`capsule_birth.c`) that
+had made every admission fail; see `FABRIC-2.md` Section H. The same pass also fixed a
+long-standing aarch64-only crash on `BYE` (wrong PSCI conduit — SMC has nothing to answer it
+under AAVMF/no-EL3 boot; switched to HVC), see `FABRIC-2.md` Section I.
 
 **Core Concepts:**