feat(xray): update xray-core to v26.9.30 and adapt panel

Bump xtls/xray-core to b26a91de4f (v26.9.30) and the three binary pins
(DockerInit.sh, release.yml Linux + Windows) in lockstep. No deleted
symbols; the sing and sing-shadowsocks indirect deps drop out with the
SS2022 rewrite.

XDNS finalmask (#6718) replaced its string lists with objects: domains
are {name, types, edns0, lenLimit, labelLimit} and client resolvers
{type, settings.addr}. The loader no longer parses the old lists, so a
single stored xdns mask keeps the whole core from starting. The new leaf
package internal/util/maskcompat converts them: "name[:type]" becomes a
domain and "name[:type]+udp://addr" a domain plus a udp resolver. A bare
name maps to TXT, the type legacy clients queried by default, and each
converted domain keeps the 1232-byte EDNS0 the old code always used
(without it the server caps answers at 512). It runs from:
- the XdnsFinalmaskObjectsFix seeder, over inbound streams, hosts, the
  xray template, the global sub-JSON mask and cached subscription
  outbounds;
- inbound save (normalizeStreamSettings) and GetXrayConfig, for rows
  that never went through the seeder;
- both link importers, since fm= from an older panel carries the lists.
The finalmask form edits the object shape (every key needs a registered
field, or the finalmask watch drops it on save) and lifts legacy masks
on open. The udp-mask golden fixture moves to the object shape, which
TestGoldenStreamFixturesBuildInXray now builds through the core. The
wire format changed as well, so pre-upgrade clients need the new core.

WireGuard outbound (#6771) dropped settings.domainStrategy and the
remoteDNS "local" mode. The endpoint lookup now follows
sockopt.domainStrategy and in-tunnel targets the outbound's
targetStrategy. The old key is silently ignored, which undid the
IPv4-first endpoint lookup the WARP outbound depends on (#5205), and
"local" now panics the core at startup because remoteDNS goes through
netip.MustParseAddr. The WireguardDomainStrategyFix seeder moves a stored
family preference to both keys (a value already set wins) and turns
"local" into targetStrategy; the outbound form lifts legacy rows the same
way and drops its select, the WARP modal writes the new placement, and
the inbound form loses a field the server never read.
ValidateOutboundConfig now refuses a non-IP remoteDNS entry, which
conf.Build() lets through, on template save and for outbound
subscriptions.

Noise finalmask items accept type "exp" (#6862), a tag expression. The
form offers it for noise items only: header-custom items go through the
core's PraseByteSlice, which refuses it.

TUN gained autoSystemDnsToGateway (Linux) and autoSystemWfpBlockLeak
(Windows). Both pass through the settings schema so a value set in JSON
survives the next form save.

MASQUE (inbound, outbound, transport) and the XDRIVE transport are new
protocols the panel does not offer yet; their new loader refusals only
cover configs the panel never generates. The FakeDNS IPv6 pool default,
the SS2022 rewrite (same gRPC account; emails are now deduped
case-insensitively, as the panel already does), the restored udphop
interval default and the rest change no panel-facing config.

go.mod

@@ -26,7 +26,7 @@ require (
 	github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e
 	github.com/valyala/fasthttp v1.74.0
 	github.com/xlzd/gotp v0.1.0
-	github.com/xtls/xray-core v1.260327.1-0.20260908222543-52a412d9e2f5
+	github.com/xtls/xray-core v1.260327.1-0.20260930074004-b26a91de4f32
 	go.uber.org/atomic v1.12.0
 	golang.org/x/crypto v0.57.0
 	golang.org/x/net v0.59.0
@@ -94,8 +94,6 @@ require (
 	github.com/quic-go/qpack v0.6.0 // indirect
 	github.com/quic-go/quic-go v0.63.0 // indirect
 	github.com/rogpeppe/go-internal v1.15.0 // indirect
-	github.com/sagernet/sing v0.9.5 // indirect
-	github.com/sagernet/sing-shadowsocks v0.2.9 // indirect
 	github.com/tklauser/go-sysconf v0.4.0 // indirect
 	github.com/tklauser/numcpus v0.12.0 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect