Add Linux unit test CI job, TRY_LOCK for GUI, gitignore cleanup

- Add test-linux-unit CI job; release now depends on tests passing
- Replace LOCK(cs_wallet) with TRY_LOCK in transactiontablemodel to avoid GUI freezes
- Add build artifacts to .gitignore (dist/, zips, object scripts)
- Add unit test instructions to README

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

.github/workflows/build-all.yml

@@ -12,6 +12,29 @@ env:
   VERSION: "5.3.6"
 
 jobs:
+  test-linux-unit:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y build-essential libboost-all-dev \
+            libssl-dev libdb++-dev libleveldb-dev libevent-dev libminiupnpc-dev
+
+      - name: Build LevelDB
+        run: |
+          cd src/leveldb
+          chmod +x build_detect_platform
+          make clean || true
+          make OPT="-O2" libleveldb.a libmemenv.a
+
+      - name: Run unit tests
+        run: |
+          cd src
+          make -f makefile.unix test -j$(nproc)
+
   build-windows-qt:
     runs-on: windows-latest
     defaults:
@@ -259,7 +282,7 @@ jobs:
 
   release:
     if: startsWith(github.ref, 'refs/tags/v')
-    needs: [build-windows-qt, build-windows-daemon, build-linux-qt, build-linux-daemon, build-macos]
+    needs: [test-linux-unit, build-windows-qt, build-windows-daemon, build-linux-qt, build-linux-daemon, build-macos]
     runs-on: ubuntu-latest
     permissions:
       contents: write

.gitignore

@@ -5,12 +5,18 @@
 *.so
 *.dylib
 *.a
+/dist/
 build/
 release/
 debug/
+/Makefile
 Makefile.Debug
 Makefile.Release
 .qmake.stash
+object_script.triangles-qt.Debug
+object_script.triangles-qt.Release
+/*.zip
+/*.tar.gz
 
 # Qt
 moc_*.cpp

README.md

@@ -55,6 +55,11 @@ make -j$(nproc) -f makefile.unix USE_UPNP=0
 strip trianglesd
 ```
 
+Run the unit test suite:
+```bash
+make -C src -f makefile.unix test
+```
+
 ### Linux (AlmaLinux 9 / RHEL 9)
 
 Install dependencies:

src/qt/transactiontablemodel.cpp

@@ -192,8 +192,12 @@ public:
             // simply re-use the cached status.
             if(rec->statusUpdateNeeded())
             {
+                // Never block the GUI thread while the core is holding cs_wallet.
+                // If the lock is busy, keep showing the cached status and refresh
+                // it on a later paint/update cycle.
+                TRY_LOCK(wallet->cs_wallet, lockWallet);
+                if (lockWallet)
                 {
-                    LOCK(wallet->cs_wallet);
                     std::map<uint256, CWalletTx>::iterator mi = wallet->mapWallet.find(rec->hash);
 
                     if(mi != wallet->mapWallet.end())
@@ -212,8 +216,14 @@ public:
 
     QString describe(TransactionRecord *rec)
     {
+        // Transaction details are generated on demand from wallet/db state.
+        // If the wallet is busy, return a lightweight placeholder instead of
+        // freezing the UI until the lock becomes available.
+        TRY_LOCK(wallet->cs_wallet, lockWallet);
+        if (!lockWallet)
+            return parent->tr("Transaction details are temporarily unavailable while the wallet is busy.");
+
         {
-            LOCK(wallet->cs_wallet);
             std::map<uint256, CWalletTx>::iterator mi = wallet->mapWallet.find(rec->hash);
             if(mi != wallet->mapWallet.end())
             {