Fix smoke tests: CLANG64 runtime for Windows, debug stderr on error

1. smoke-windows: Use CLANG64 (not UCRT64) so runtime matches the
   build environment. Binary built with CLANG64 needs CLANG64 DLLs.
2. smoke-unix: Add fail-fast: false so one platform failure doesn't
   cancel all 7 other smoke jobs.
3. smoke-test.sh: Capture and display stderr on indexing failure to
   help debug smoke-unix errors.
4. release.yml: Same CLANG64 smoke fix.

Author: DeusData

.github/workflows/dry-run.yml

@@ -231,6 +231,7 @@ jobs:
     if: ${{ !inputs.skip_builds }}
     needs: [build-unix]
     strategy:
+      fail-fast: false
       matrix:
         include:
           - os: ubuntu-latest
@@ -275,20 +276,21 @@ jobs:
 
       - uses: msys2/setup-msys2@v2
         with:
-          msystem: UCRT64
+          msystem: CLANG64
           path-type: inherit
           install: >-
-            mingw-w64-ucrt-x86_64-python3
+            mingw-w64-clang-x86_64-python3
+            unzip
 
       - uses: actions/download-artifact@v4
         with:
           name: binaries-windows-amd64
 
       - name: Extract binary
-        shell: pwsh
+        shell: msys2 {0}
         run: |
-          $suffix = if ("${{ matrix.variant }}" -eq "ui") { "-ui" } else { "" }
-          Expand-Archive -Path "codebase-memory-mcp${suffix}-windows-amd64.zip" -DestinationPath .
+          SUFFIX=${{ matrix.variant == 'ui' && '-ui' || '' }}
+          unzip -o "codebase-memory-mcp${SUFFIX}-windows-amd64.zip"
 
       - name: Smoke test (${{ matrix.variant }}, windows-amd64)
         shell: msys2 {0}

.github/workflows/release.yml

@@ -269,20 +269,21 @@ jobs:
 
       - uses: msys2/setup-msys2@v2
         with:
-          msystem: UCRT64
+          msystem: CLANG64
           path-type: inherit
           install: >-
-            mingw-w64-ucrt-x86_64-python3
+            mingw-w64-clang-x86_64-python3
+            unzip
 
       - uses: actions/download-artifact@v4
         with:
           name: binaries-windows-amd64
 
       - name: Extract binary
-        shell: pwsh
+        shell: msys2 {0}
         run: |
-          $suffix = if ("${{ matrix.variant }}" -eq "ui") { "-ui" } else { "" }
-          Expand-Archive -Path "codebase-memory-mcp${suffix}-windows-amd64.zip" -DestinationPath .
+          SUFFIX=${{ matrix.variant == 'ui' && '-ui' || '' }}
+          unzip -o "codebase-memory-mcp${SUFFIX}-windows-amd64.zip"
 
       - name: Smoke test (${{ matrix.variant }}, windows-amd64)
         shell: msys2 {0}

scripts/smoke-test.sh

@@ -13,7 +13,8 @@ BINARY="${1:?usage: smoke-test.sh <binary-path>}"
 TMPDIR=$(mktemp -d)
 trap 'rm -rf "$TMPDIR"' EXIT
 
-cli() { "$BINARY" cli "$@" 2>/dev/null; }
+CLI_STDERR=$(mktemp)
+cli() { "$BINARY" cli "$@" 2>"$CLI_STDERR"; }
 
 echo "=== Phase 1: version ==="
 OUTPUT=$("$BINARY" --version 2>&1)
@@ -97,6 +98,9 @@ echo "$RESULT"
 STATUS=$(echo "$RESULT" | python3 -c "import json,sys; d=json.loads(json.loads(sys.stdin.read())['content'][0]['text']); print(d.get('status',''))" 2>/dev/null || echo "")
 if [ "$STATUS" != "indexed" ]; then
   echo "FAIL: index status is '$STATUS', expected 'indexed'"
+  echo "--- stderr ---"
+  cat "$CLI_STDERR"
+  echo "--- end stderr ---"
   exit 1
 fi