doc: update minimum Bitcoin Core version to v30.2

- Update minimum required Bitcoin Core version from v30.0 to v30.2
- Remove interruptWait() exception handling since v30.2 implements it
- Add Requirements section to doc/stratum-v2.md documenting version
  requirement and backwards compatibility notes

Author: xyephy

README.md

@@ -29,7 +29,7 @@ dependencies.
 
 Usage
 ------------------------
-Download or compile Bitcoin Core v30.0 or later. Start it with:
+Download or compile Bitcoin Core v30.2 or later. Start it with:
 
  ```sh
  bitcoin -m node -ipcbind=unix

doc/stratum-v2.md

@@ -1,5 +1,26 @@
 # Stratum v2
 
+## Requirements
+
+### Bitcoin Core Version
+
+sv2-tp requires **Bitcoin Core v30.2 or later** compiled with IPC support
+(`bitcoin-node` binary, not `bitcoind`).
+
+**Why v30.2?**
+- v30.2 implements `interruptWait()` for clean shutdown of template waiting
+- v30.2 properly enforces minimum block reserved weight
+
+**Backwards Compatibility:**
+- v30.0 and v30.1 are **not supported**. Using older versions may result in:
+  - Crash on shutdown (missing `interruptWait()` implementation)
+  - Unexpected block reserved weight behavior
+
+To check your Bitcoin Core version:
+```sh
+bitcoin-node --version
+```
+
 ## Design
 
 The Stratum v2 protocol specification can be found here: https://stratumprotocol.org/specification

src/sv2/template_provider.cpp

@@ -131,16 +131,8 @@ void Sv2TemplateProvider::Interrupt()
     LogPrintLevel(BCLog::SV2, BCLog::Level::Trace, "Interrupt pending waitNext() calls...");
     {
         LOCK(m_tp_mutex);
-        try {
-            for (auto& t : GetBlockTemplates()) {
-                t.second.second->interruptWait();
-            }
-        } catch (const ipc::Exception& e) {
-            // Bitcoin Core v30 does not yet implement interruptWait(), fall back
-            // to just waiting until waitNext() returns.
-            LogPrintLevel(BCLog::SV2, BCLog::Level::Info,
-                          "Interrupt received, waiting up to %d seconds before shutting down (-sv2interval)",
-                          m_options.fee_check_interval.count());
+        for (auto& t : GetBlockTemplates()) {
+            t.second.second->interruptWait();
         }
     }