fix: ACME ownership self-heal + daily timer, apply-all force, firewall baseline re-stamp

acme:
- acme.sh chmods its tree to owner-only (700/600) every run, which
  broke the two-user model: a tree left owner-only by one user made
  every acme.sh call of the other exit 2
- normalize_acme_home() reopens group access (sudo chmod g+rwX,
  files only — setgid dirs trip RestrictSUIDSGID); _run_acme_preflight
  is the choke point before every daemon acme.sh call + startup
- acme service now runs as the daemon user; --log persists the raw CA
  transcript; SYS_LOG=6 journals manual issue/renew runs
- timer daily-only: two runs/day landed inside ZeroSSL's 24h
  validation backoff (Retry-After: 86400) — a permanent renewal lockout
- _collect_acme no longer raises on cert-list failure; reports
  status.error (AcmeState.status) so the certs page can surface it

firewall: re-stamp the applied baseline on live zone mutations
(interfaces/services/rich-rules/masquerade/forward-ports) so cancel-all
reverts to post-mutation state, not a stale install-era snapshot;
set_masquerade syncs the declarative config for existing zones;
add_forward_port records toaddr only with toport

status: apply-all accepts {"force": true} (forwarded to the firewall
apply only); ApplyConfirm force checkbox; applyResultToasts() — the
errors map wins over the 200; ActionButton checks errors before the
success toast; dashboard uses ApplyConfirm

system_import: drift re-imports carry the existing apply-meta; first
import stamps the adopted content as applied (it is the running state)
— no phantom pending changes

nginx: get_config only re-saves when migration actually changed the
config (no more owner/mtime churn on every read)

install: repair mis-owned top-level system dirs (tmpfiles
unsafe-path-transition), warn with a full-repair command for deeper
mis-ownership

daemon/server: loop.get_exception_handler() (aiohttp API fix)

tests: 888 pytest + 24 node passing; ruff clean

webui/static/pages/certs.js

@@ -336,6 +336,7 @@ export default definePage({
         if (guard) return guard;
 
         const account = state.acme.data?.account || { registered: false, email: '', ca: '' };
+        const certError = state.acme.data?.status?.error;
         const rows = (state.acme.data?.certs || []).map(c => {
             const badge = certStatusBadge({ expired: c.expired, daysRemaining: c.days_remaining });
 
@@ -363,6 +364,15 @@ export default definePage({
                     onClick=${() => issueCertModal(state)}>Issue Certificate</button>`,
             }),
             _accountCard(account),
+            certError
+                ? html`<div class="card">
+                    <div class="card-body">
+                        <div class="text-warning text-sm">
+                            Certificate data unavailable: ${esc(certError)}
+                        </div>
+                    </div>
+                </div>`
+                : null,
             rows.length
                 ? Table({
                     columns: ['Domain', 'Issuer', 'Expiry', 'Status', 'Actions'],