feat(xray): update xray-core to v26.7.11 and adapt panel

Bump xtls/xray-core to 50231eaf (v26.7.11) and the three binary pins
(DockerInit.sh, release.yml x2) in lockstep.

Adapt the panel to the upstream changes:

- Shadowsocks "none"/"plain" and VMess "none"/"zero" were removed from
  the core. A migration rewrites stored none/plain SS methods to a
  supported cipher and none/zero VMess security to "auto" (on both the
  clients column and inbound settings JSON); the SS build-time heal does
  the same so a row injected after boot cannot brick startup. The removed
  values are dropped from every frontend option list, schema and adapter,
  and coerced to "auto" at the Go link/sub/Clash emit sites and both link
  importers. Fix the CipherType_NONE sentinel that no longer compiles.

- Unencrypted vless/trojan outbounds to a public address are now refused
  by the core. Validate outbounds through the vendored config loader when
  saving the xray template and when storing/merging outbound
  subscriptions, so one such outbound cannot keep the core from starting.

- New TCP finalmask type "xmc" (Minecraft mimicry): add it to the sub
  link allowlist, the frontend enum and the FinalMask form (hostname,
  usernames, required password), and document it.

- streamSettings gained a "method" alias for "network"; canonicalize it
  to "network" at inbound save time and in the form adapters/schema so a
  method-keyed config keeps its transport.

- New root "env" config key is passed through xray.Config, compared in
  Equals, and forces a restart in the hot diff.

- REALITY now defaults minClientVer to 26.3.27; update the form
  placeholder.

internal/database/model/model_shadowsocks_removed_test.go

@@ -0,0 +1,43 @@
+package model
+
+import (
+	"encoding/json"
+	"testing"
+)
+
+// TestHealShadowsocksClientMethods_RewritesRemovedCipher covers the last-gate
+// build-time heal for xray-core v26.7.11's removed "none"/"plain" ciphers: a
+// row that survives to config generation (restored backup, direct DB edit)
+// must be rewritten to a supported cipher on both the inbound method and its
+// clients so one such inbound cannot keep xray from starting.
+func TestHealShadowsocksClientMethods_RewritesRemovedCipher(t *testing.T) {
+	settings := `{"method": "plain", "clients": [{"email": "a@x", "password": "p", "method": "plain"}]}`
+	healed, ok := HealShadowsocksClientMethods(settings)
+	if !ok {
+		t.Fatal("expected heal to report a change for a removed cipher")
+	}
+	var parsed struct {
+		Method  string           `json:"method"`
+		Clients []map[string]any `json:"clients"`
+	}
+	if err := json.Unmarshal([]byte(healed), &parsed); err != nil {
+		t.Fatalf("parse healed settings: %v", err)
+	}
+	if parsed.Method != "chacha20-ietf-poly1305" {
+		t.Fatalf("expected inbound method rewritten to a supported cipher, got %q", parsed.Method)
+	}
+	if parsed.Clients[0]["method"] != "chacha20-ietf-poly1305" {
+		t.Fatalf("expected client method to match the healed cipher, got %v", parsed.Clients[0]["method"])
+	}
+}
+
+func TestReplaceRemovedShadowsocksCipher(t *testing.T) {
+	for _, method := range []string{"none", "plain"} {
+		if got, removed := ReplaceRemovedShadowsocksCipher(method); !removed || got != "chacha20-ietf-poly1305" {
+			t.Fatalf("ReplaceRemovedShadowsocksCipher(%q) = (%q, %v), want a supported replacement", method, got, removed)
+		}
+	}
+	if got, removed := ReplaceRemovedShadowsocksCipher("aes-256-gcm"); removed || got != "aes-256-gcm" {
+		t.Fatalf("ReplaceRemovedShadowsocksCipher(aes-256-gcm) = (%q, %v), want it left untouched", got, removed)
+	}
+}