fix: Windows identity, async address creation, mining UI, and chart artifacts

Windows identity:
- Add VERSIONINFO resource (.rc) with ObsidianDragon file description
- Embed application manifest for DPI awareness and shell identity
- Patch libwinpthread/libpthread to remove competing VERSIONINFO
- Set AppUserModelID and HWND property store to override Task Manager cache
- Link patched pthread libs to eliminate "POSIX WinThreads" description

Address creation (+New button):
- Move z_getnewaddress/getnewaddress off UI thread to async worker
- Inject new address into state immediately for instant UI selection
- Trigger background refresh for balance updates

Mining tab:
- Add pool mining dropdown with saved URLs/workers and bookmarks
- Add solo mining log panel from daemon output with chart/log toggle
- Fix toggle button cursor (render after InputTextMultiline)
- Auto-restart miner on pool config change
- Migrate default pool URL to include stratum port

Transactions:
- Sort pending (0-conf) transactions to top of history
- Fall back to timereceived when timestamp is missing

Shutdown:
- Replace blocking sleep_for calls with 100ms polling loops
- Check shutting_down_ flag throughout daemon restart/bootstrap flows
- Reduce daemon stop timeout from 30s to 10s

Other:
- Fix market chart fill artifact (single concave polygon vs per-segment quads)
- Add bootstrap checksum verification state display
- Rename daemon client identifier to ObsidianDragon

src/app_wizard.cpp

@@ -673,8 +673,13 @@ void App::renderFirstRunWizard() {
             } else {
                 auto prog = bootstrap_->getProgress();
 
-                const char* statusTitle = (prog.state == util::Bootstrap::State::Downloading)
-                    ? "Downloading bootstrap..." : "Extracting blockchain data...";
+                const char* statusTitle;
+                if (prog.state == util::Bootstrap::State::Downloading)
+                    statusTitle = "Downloading bootstrap...";
+                else if (prog.state == util::Bootstrap::State::Verifying)
+                    statusTitle = "Verifying checksums...";
+                else
+                    statusTitle = "Extracting blockchain data...";
                 dl->AddText(bodyFont, bodyFont->LegacySize, ImVec2(cx, cy), textCol, statusTitle);
                 cy += bodyFont->LegacySize + 12.0f * dp;