Modernize codebase: C++17, remove Tor v2, add embedded Tor scaffold, IBD speedups

- Replace ~290 BOOST_FOREACH with C++11 range-for across 41+ files
- Replace boost::assign::map_list_of with C++11 brace initialization
- Remove PAIRTYPE macro (no longer needed without BOOST_FOREACH)
- Guard OpenSSL locking callbacks for 3.x (no-ops in >= 1.1.0)
- Fix Qt deprecated APIs for Qt6 compat (QStyleOptionViewItemV4, setResizeMode)
- Add openssl_compat.h version string wrapper
- Enable C++17 in makefile.unix and triangles-qt.pro

- Delete 163 dead Tor v2 source files (~150K lines removed)
- Add embedded Tor scaffold (tor_embedded.h/cpp) using tor_api.h
- Add build-libtor.sh helper and CODEX-TOR-GUIDE.md
- Update makefile.unix and .pro with USE_TOR_EMBEDDED optional flag
- Fallback to external tor_process when not compiled with libtor

- IBD pipeline refill: 100 -> 1000 blocks
- Send/recv buffer limits: unlimited -> 100MB/32MB
- Orphan block cap: unlimited -> 750 with random eviction
- Socket poll: 10ms -> 1ms during IBD
- Message handler sleep: 10ms -> 1ms during IBD
- Stall detection timeout: 5s -> 2s

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/rpcrawtransaction.cpp

@@ -3,8 +3,6 @@
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#include <boost/assign/list_of.hpp>
-
 #include "base58.h"
 #include "trianglesrpc.h"
 #include "txdb.h"
@@ -15,7 +13,6 @@
 
 using namespace std;
 using namespace boost;
-using namespace boost::assign;
 using namespace json_spirit;
 
 void ScriptPubKeyToJSON(const CScript& scriptPubKey, Object& out, bool fIncludeHex)
@@ -39,7 +36,7 @@ void ScriptPubKeyToJSON(const CScript& scriptPubKey, Object& out, bool fIncludeH
     out.push_back(Pair("type", GetTxnOutputType(type)));
 
     Array a;
-    BOOST_FOREACH(const CTxDestination& addr, addresses)
+    for (const CTxDestination& addr : addresses)
         a.push_back(CTrianglesAddress(addr).ToString());
     out.push_back(Pair("addresses", a));
 }
@@ -51,7 +48,7 @@ void TxToJSON(const CTransaction& tx, const uint256 hashBlock, Object& entry)
     entry.push_back(Pair("time", (boost::int64_t)tx.nTime));
     entry.push_back(Pair("locktime", (boost::int64_t)tx.nLockTime));
     Array vin;
-    BOOST_FOREACH(const CTxIn& txin, tx.vin)
+    for (const CTxIn& txin : tx.vin)
     {
         Object in;
         if (tx.IsCoinBase())
@@ -162,7 +159,7 @@ Value listunspent(const Array& params, bool fHelp)
     if (params.size() > 2)
     {
         Array inputs = params[2].get_array();
-        BOOST_FOREACH(Value& input, inputs)
+        for (Value& input : inputs)
         {
             CTrianglesAddress address(input.get_str());
             if (!address.IsValid())
@@ -176,7 +173,7 @@ Value listunspent(const Array& params, bool fHelp)
     Array results;
     vector<COutput> vecOutputs;
     pwalletMain->AvailableCoins(vecOutputs, false);
-    BOOST_FOREACH(const COutput& out, vecOutputs)
+    for (const COutput& out : vecOutputs)
     {
         if (out.nDepth < nMinDepth || out.nDepth > nMaxDepth)
             continue;
@@ -231,7 +228,7 @@ Value createrawtransaction(const Array& params, bool fHelp)
 
     CTransaction rawTx;
 
-    BOOST_FOREACH(Value& input, inputs)
+    for (Value& input : inputs)
     {
         const Object& o = input.get_obj();
 
@@ -254,7 +251,7 @@ Value createrawtransaction(const Array& params, bool fHelp)
     }
 
     set<CTrianglesAddress> setAddress;
-    BOOST_FOREACH(const Pair& s, sendTo)
+    for (const Pair& s : sendTo)
     {
         CTrianglesAddress address(s.name_);
         if (!address.IsValid())
@@ -382,7 +379,7 @@ Value signrawtransaction(const Array& params, bool fHelp)
         tempTx.FetchInputs(txdb, unused, false, false, mapPrevTx, fInvalid);
 
         // Copy results into mapPrevOut:
-        BOOST_FOREACH(const CTxIn& txin, tempTx.vin)
+        for (const CTxIn& txin : tempTx.vin)
         {
             const uint256& prevHash = txin.prevout.hash;
             if (mapPrevTx.count(prevHash) && mapPrevTx[prevHash].second.vout.size()>txin.prevout.n)
@@ -394,7 +391,7 @@ Value signrawtransaction(const Array& params, bool fHelp)
     if (params.size() > 1 && params[1].type() != null_type)
     {
         Array prevTxs = params[1].get_array();
-        BOOST_FOREACH(Value& p, prevTxs)
+        for (Value& p : prevTxs)
         {
             if (p.type() != obj_type)
                 throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "expected object with {\"txid'\",\"vout\",\"scriptPubKey\"}");
@@ -442,7 +439,7 @@ Value signrawtransaction(const Array& params, bool fHelp)
     {
         fGivenKeys = true;
         Array keys = params[2].get_array();
-        BOOST_FOREACH(Value k, keys)
+        for (Value k : keys)
         {
             CTrianglesSecret vchSecret;
             bool fGood = vchSecret.SetString(k.get_str());
@@ -463,15 +460,14 @@ Value signrawtransaction(const Array& params, bool fHelp)
     int nHashType = SIGHASH_ALL;
     if (params.size() > 3 && params[3].type() != null_type)
     {
-        static map<string, int> mapSigHashValues =
-            boost::assign::map_list_of
-            (string("ALL"), int(SIGHASH_ALL))
-            (string("ALL|ANYONECANPAY"), int(SIGHASH_ALL|SIGHASH_ANYONECANPAY))
-            (string("NONE"), int(SIGHASH_NONE))
-            (string("NONE|ANYONECANPAY"), int(SIGHASH_NONE|SIGHASH_ANYONECANPAY))
-            (string("SINGLE"), int(SIGHASH_SINGLE))
-            (string("SINGLE|ANYONECANPAY"), int(SIGHASH_SINGLE|SIGHASH_ANYONECANPAY))
-            ;
+        static map<string, int> mapSigHashValues = {
+            {"ALL", int(SIGHASH_ALL)},
+            {"ALL|ANYONECANPAY", int(SIGHASH_ALL|SIGHASH_ANYONECANPAY)},
+            {"NONE", int(SIGHASH_NONE)},
+            {"NONE|ANYONECANPAY", int(SIGHASH_NONE|SIGHASH_ANYONECANPAY)},
+            {"SINGLE", int(SIGHASH_SINGLE)},
+            {"SINGLE|ANYONECANPAY", int(SIGHASH_SINGLE|SIGHASH_ANYONECANPAY)},
+        };
         string strHashType = params[3].get_str();
         if (mapSigHashValues.count(strHashType))
             nHashType = mapSigHashValues[strHashType];
@@ -498,7 +494,7 @@ Value signrawtransaction(const Array& params, bool fHelp)
             SignSignature(keystore, prevPubKey, mergedTx, i, nHashType);
 
         // ... and merge in other signatures:
-        BOOST_FOREACH(const CTransaction& txv, txVariants)
+        for (const CTransaction& txv : txVariants)
         {
             txin.scriptSig = CombineSignatures(prevPubKey, mergedTx, i, txin.scriptSig, txv.vin[i].scriptSig);
         }