fix: replace CI2PSession (process-I2P) with CI2PEmbedded in merged code

Merge left residual references to the SAMI-PC process-based I2P API
(CI2PSession, fI2P) in files that now compile against the v6 embedded
I2P (CI2PEmbedded). Fixed:
- net.cpp ConnectNode: removed fI2P/CI2PSession blocks, restored
  v6 SOCKS-proxy connection path (I2P routing handled in netbase)
- CMakeLists.txt: removed i2p.cpp/i2p_process.cpp from build (not
  part of embedded I2P; kept in tree as reference only)
- rpcnet.cpp: CI2PSession → CI2PEmbedded (IsRunning/GetI2PAddress)
- rpcwallet.cpp: same API migration
- init.cpp: same API migration for startup address print

src/CMakeLists.txt

@@ -54,8 +54,6 @@ set(CORE_SOURCES
     net.cpp
     net_bootstrap.cpp
     netbase.cpp
-    i2p.cpp
-    i2p_process.cpp
     protocol.cpp
     script.cpp
     sync.cpp

src/init.cpp

@@ -1706,7 +1706,7 @@ bool AppInit2()
             StartupPerfLog("i2p_start", GetTimeMillis() - nI2PStart, strprintf("started=%d", i2pStarted));
             if (i2pStarted) {
                 SetReachable(NET_I2P, true);
-                std::string i2pAddr = CI2PSession::GetInstance()->GetB32Address();
+                std::string i2pAddr = CI2PEmbedded::GetInstance()->GetI2PAddress();
                 printf("I2P network enabled. Our address: %s\n", i2pAddr.c_str());
             } else {
                 printf("NOTICE: I2P not available this session; continuing with Tor only\n");

src/net.cpp

@@ -591,16 +591,6 @@ CNode* ConnectNode(CAddress addrConnect, const char *pszDest)
         return nullptr;
     }
 
-    // For I2P make sure addrConnect carries the destination so the resulting
-    // CNode is labelled correctly even when we were given a bare pszDest.
-    if (fI2P && !addrConnect.IsI2P()) {
-        std::string i2pHost = addrStr;
-        size_t i2pEnd = i2pHost.find(".i2p");
-        if (i2pEnd != std::string::npos)
-            i2pHost = i2pHost.substr(0, i2pEnd + 4);
-        addrConnect.SetSpecial(i2pHost);
-    }
-
     if (pszDest == nullptr) {
         if (IsLocal(addrConnect))
             return nullptr;
@@ -624,20 +614,8 @@ CNode* ConnectNode(CAddress addrConnect, const char *pszDest)
         pszDest ? 0 : (double)(GetAdjustedTime() - addrConnect.nTime)/3600.0);
 
     // Connect
-    SOCKET hSocket = INVALID_SOCKET;
-    bool fConnected;
-    if (fI2P) {
-        // Route through the I2P SAM session. Strip any :port suffix; I2P peers
-        // are reached purely by destination.
-        std::string i2pDest = addrStr;
-        size_t i2pEnd = i2pDest.find(".i2p");
-        if (i2pEnd != std::string::npos)
-            i2pDest = i2pDest.substr(0, i2pEnd + 4);
-        fConnected = CI2PSession::GetInstance()->Connect(i2pDest, hSocket);
-    } else {
-        fConnected = pszDest ? ConnectSocketByName(addrConnect, hSocket, pszDest, GetDefaultPort()) : ConnectSocket(addrConnect, hSocket);
-    }
-    if (fConnected)
+    SOCKET hSocket;
+    if (pszDest ? ConnectSocketByName(addrConnect, hSocket, pszDest, GetDefaultPort()) : ConnectSocket(addrConnect, hSocket))
     {
         addrman.Attempt(addrConnect);
 

src/rpcnet.cpp

@@ -10,7 +10,7 @@
 #include "db.h"
 #include "walletdb.h"
 #include "net_bootstrap.h"
-#include "i2p.h"
+#include "i2p/i2p_embedded.h"
 #include "tor/onion_v3.h"
 #include "tor/tor_embedded.h"
 
@@ -42,8 +42,8 @@ Value getnetworkinfo(const Array& params, bool fHelp)
     if (onionAddress.empty())
         onionAddress = CTorEmbedded::GetInstance()->GetOnionAddress();
 
-    // I2P session state and .b32.i2p address.
-    CI2PSession* i2p = CI2PSession::GetInstance();
+    // I2P embedded router state and .b32.i2p address.
+    CI2PEmbedded* i2p = CI2PEmbedded::GetInstance();
     int nI2PPeers = 0;
     {
         LOCK(cs_vNodes);
@@ -52,9 +52,9 @@ Value getnetworkinfo(const Array& params, bool fHelp)
                 nI2PPeers++;
     }
     Object i2pObj;
-    i2pObj.push_back(Pair("enabled", i2p->IsEnabled()));
-    i2pObj.push_back(Pair("active",  i2p->IsActive()));
-    i2pObj.push_back(Pair("address", i2p->GetB32Address()));
+    i2pObj.push_back(Pair("enabled", i2p->IsRunning()));
+    i2pObj.push_back(Pair("active",  i2p->IsRunning()));
+    i2pObj.push_back(Pair("address", i2p->GetI2PAddress()));
     i2pObj.push_back(Pair("peers",   nI2PPeers));
 
     Object obj;

src/rpcwallet.cpp

@@ -9,7 +9,7 @@
 #include "init.h"
 #include "base58.h"
 #include "smessage.h"
-#include "i2p.h"
+#include "i2p/i2p_embedded.h"
 #include "tor/onion_v3.h"
 #include "tor/tor_embedded.h"
 
@@ -108,7 +108,7 @@ Value getinfo(const Array& params, bool fHelp)
     if (onionAddress.empty())
         onionAddress = CTorEmbedded::GetInstance()->GetOnionAddress();
     obj.push_back(Pair("toraddress",    onionAddress));
-    obj.push_back(Pair("i2paddress",    CI2PSession::GetInstance()->GetB32Address()));
+    obj.push_back(Pair("i2paddress",    CI2PEmbedded::GetInstance()->GetI2PAddress()));
 
     diff.push_back(Pair("proof-of-work",  GetDifficulty()));
     diff.push_back(Pair("proof-of-stake", GetDifficulty(GetLastBlockIndex(pindexBest, true))));