Removes the closed TECH-AXIOS-STORE-COUPLING entry from BACKLOG.md
(the structural decoupling landed in 53f6a7b + 26a92b3). The
git-history search `git log --grep=TECH-AXIOS-STORE-COUPLING`
remains the durable closure record, per the backlog hygiene
convention.
Adds a follow-up entry TECH-AXIOS-INTERCEPTOR-TESTS that captures
all four acceptance scenarios (X-Organisation-Id header
injection, 401 auth-fail flow, 403+impersonation_ended revocation
flow, 4xx/5xx error toast). Phase A audit found that none of
these is tested today; the refactor is gedragsneutraal so no
regression was introduced, but the gap is real and should not
silently outlive the refactor that made it visible. Priority
medium per Bert's Phase B sign-off.
Appends the debt-closed sentence to the Sessie 1c entry in
ARCH-CONSOLIDATION-2026-04.md, citing commit 53f6a7b.
Co-Authored-By: Claude <noreply@anthropic.com>
bert.hausmans
4197df2b2f