Add copyover restore support for TelnetSession and MSDPManager.

Author: powerje

Sources/SwiftMTH/MSDPManager.swift

@@ -71,6 +71,27 @@ public final class MSDPManager {
         nameIndex[name]
     }
 
+    // MARK: - Copyover Support
+
+    /// Names of variables currently marked as reported (for copyover snapshot).
+    public var reportedVariableNames: [String] {
+        var names: [String] = []
+        for idx in 0..<definitions.count {
+            if state[idx].flags.contains(.reported) {
+                names.append(definitions[idx].name)
+            }
+        }
+        return names
+    }
+
+    /// Restore reported variable flags from a list of variable names (after copyover).
+    public func restoreReportedVariables(_ names: [String]) {
+        for name in names {
+            guard let idx = findIndex(name) else { continue }
+            state[idx].flags.insert(.reported)
+        }
+    }
+
     // MARK: - Reading
 
     /// Get the current value of a variable, or nil if unknown.

Sources/SwiftMTH/TelnetSession.swift

@@ -67,6 +67,28 @@ public final class TelnetSession {
         self.msdpTable = msdpTable
     }
 
+    /// Restore a TelnetSession from saved copyover state.
+    /// Sets negotiated flags directly without sending announcements to the client.
+    public init(
+        restoring commFlags: CommFlags,
+        mttsFlags: MTTSFlags,
+        terminalType: String,
+        windowSize: (cols: Int, rows: Int),
+        proxy: String,
+        delegate: TelnetSessionDelegate? = nil,
+        telnetTable: [TelnetOptionEntry] = defaultTelnetTable,
+        msdpTable: [MSDPVariableDefinition] = defaultMSDPTable
+    ) {
+        self.delegate = delegate
+        self.telnetTable = telnetTable
+        self.msdpTable = msdpTable
+        self.commFlags = commFlags
+        self.mttsFlags = mttsFlags
+        self.terminalType = terminalType
+        self.windowSize = windowSize
+        self.proxy = proxy
+    }
+
     // MARK: - Connection Lifecycle
 
     /// Announce support for negotiated telnet options.