feat(firewall): nftables hit-counter pro Regel + Live-Hits-Spalte in der UI
- ruleset.nft.tpl: operator-rules bekommen `counter <action> comment "egid:<id>"`
→ nft zählt Packets + Bytes per Regel ab dem letzten Ruleset-Apply
- handlers/firewall_counters.go: GET /firewall/counters parst
`sudo nft list table inet edgeguard` per Regex, liefert [{rule_id,packets,bytes}]
- handlers/firewall_counters_test.go: unit-tests für parseNFTCounters
- Firewall/Rules.tsx: neue "Hits"-Spalte (Packet-Count, Tooltip mit Bytes),
10s-Polling via TanStack Query ['fw','counters']
- i18n de+en: fw.rule.hits
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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