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

lib/system_import.py

@@ -8,10 +8,18 @@ caused by install.sh or manual edits to system files.
 import contextlib
 import logging
 import re
+from copy import deepcopy
 from pathlib import Path
 from typing import Any
 
-from lib.common import load_json, run, save_json
+from lib.common import (
+    _APPLY_HASH_KEY,
+    _LAST_APPLIED_CONFIG_KEY,
+    load_json,
+    run,
+    save_json,
+    stamp_applied,
+)
 from lib.firewall import _live_target_to_config, _parse_all_zones_output
 
 logger = logging.getLogger(__name__)
@@ -53,6 +61,24 @@ def import_all() -> list[str]:
     return updated
 
 
+def _carry_apply_meta(cfg: dict[str, Any], existing: dict[str, Any]) -> None:
+    """Preserve apply bookkeeping when adopting live system state.
+
+    Imported content replaces the declarative config but must not destroy
+    the applied-state baseline. When *existing* carries apply meta keys,
+    they are copied over so pending-change detection and cancel-all keep
+    working against the last-applied baseline. When no baseline exists
+    (first import), *cfg* is stamped as applied — the imported content is
+    exactly the state the system is currently running.
+    """
+    if _APPLY_HASH_KEY in existing or _LAST_APPLIED_CONFIG_KEY in existing:
+        for key in (_APPLY_HASH_KEY, _LAST_APPLIED_CONFIG_KEY):
+            if key in existing:
+                cfg[key] = deepcopy(existing[key])
+    else:
+        stamp_applied(cfg)
+
+
 # ------------------------------------------------------------------
 # Dnsmasq
 # ------------------------------------------------------------------
@@ -86,12 +112,13 @@ def import_dnsmasq() -> bool:
         return False
 
     cfg_path = PROJECT_DIR / "config" / "dnsmasq" / "config.json"
+    existing: dict[str, Any] = {}
     if cfg_path.exists():
         existing = load_json(cfg_path)
         if _cfgs_equal(existing, cfg):
             logger.debug("Skipping dnsmasq: config already matches")
             return False
-
+    _carry_apply_meta(cfg, existing)
     save_json(cfg_path, cfg)
     summary = f"upstreams={len(cfg.get('dns', {}).get('upstreams', []))}, ranges={len(cfg.get('dhcp', {}).get('ranges', []))}"
     logger.info("Imported dnsmasq config from %s: %s", DNSMASQ_CONF, summary)
@@ -247,12 +274,13 @@ def import_wireguard() -> bool:
         return False
 
     cfg_path = PROJECT_DIR / "config" / "wireguard" / "config.json"
+    existing: dict[str, Any] = {}
     if cfg_path.exists():
         existing = load_json(cfg_path)
         if _cfgs_equal(existing, cfg):
             logger.debug("Skipping wireguard: config already matches")
             return False
-
+    _carry_apply_meta(cfg, existing)
     save_json(cfg_path, cfg)
     peer_count = len(cfg.get("peers", {}))
     logger.info("Imported wireguard config from %s: peers=%d", WG_CONF, peer_count)
@@ -941,7 +969,9 @@ def import_firewall() -> bool:
         logger.debug("Skipping firewall: no zones with interfaces")
         return False
 
-    save_json(cfg_path, {"zones": zone_configs})
+    # Only reached when the config file is absent: the imported zones are
+    # exactly what firewalld is running, so stamp them as the applied state.
+    save_json(cfg_path, stamp_applied({"zones": zone_configs}))
     logger.info(
         "Imported firewall config: zones=%s",
         ", ".join(zone_configs.keys()),