chore(clang-tidy): tune check filter and options

.clang-tidy

@@ -1,21 +1,33 @@
 ---
 HeaderFilterRegex: 'src/(?!contrib/).*'
+# Skip CMake autogen output (AUTOUIC/AUTOMOC/AUTORCC headers under build/).
+ExcludeHeaderFilterRegex: '.*_autogen[/\\].*'
+# TODO: Reevaluate -modernize-use-nodiscard.
 Checks: >
   *,
   -abseil-*,
   -altera-*,
   -android-*,
+  -bugprone-easily-swappable-parameters,
+  -concurrency-mt-unsafe,
+  -cppcoreguidelines-avoid-magic-numbers,
+  -cppcoreguidelines-owning-memory,
+  -cppcoreguidelines-prefer-member-initializer,
+  -cppcoreguidelines-pro-type-static-cast-downcast,
   -fuchsia-*,
   -google-*,
   google-build-using-namespace,
   -linuxkernel-*,
+  -llvm-prefer-static-over-anonymous-namespace,
   -llvmlibc-*,
-  -cppcoreguidelines-avoid-magic-numbers,
-  -cppcoreguidelines-owning-memory,
-  -bugprone-easily-swappable-parameters,
-  -concurrency-mt-unsafe,
-  -cppcoreguidelines-prefer-member-initializer,
+  -modernize-use-nodiscard,
   -modernize-use-trailing-return-type,
-  -readability-identifier-length,
+  -performance-enum-size,
   -readability-function-cognitive-complexity,
+  -readability-identifier-length,
   -readability-magic-numbers,
+CheckOptions:
+  cppcoreguidelines-pro-bounds-avoid-unchecked-container-access.ExcludeClasses: >-
+    ::std::map;::std::unordered_map;::std::flat_map;
+    ::QJsonObject;::QMap;::QHash;::QMultiMap;::QMultiHash;
+    ::QVariantMap;::QVariantHash

.clangd

@@ -1,2 +1,5 @@
 CompileFlags:
   CompilationDatabase: build/dev
+Diagnostics:
+  ClangTidy:
+    FastCheckFilter: None

justfile

@@ -44,13 +44,14 @@ format *args:
     pwsh tools/run-clang-format.ps1 {{args}}
 
 # Run clang-tidy (use -Fix to apply, -Staged for staged files only, -Check <name> for a single check).
+# Depends on `build` (not just `configure`) so AUTOUIC/AUTOMOC/AUTORCC outputs exist.
 [group('dev')]
-lint *args: configure
+lint *args: build
     pwsh tools/run-clang-tidy.ps1 {{args}}
 
 # Run clazy Qt-aware checks (use -Fix to apply, -Staged for staged files only, -Check <name> for a single check or level).
 [group('dev')]
-clazy *args: configure
+clazy *args: build
     pwsh tools/run-clazy.ps1 {{args}}
 
 # Profile build time with -ftime-trace and emit a ClangBuildAnalyzer report.
@@ -67,10 +68,10 @@ analyze-build-time:
 analyze-build-time-report:
     ClangBuildAnalyzer --analyze build/{{timetrace_preset}}/cba.bin
 
-# Remove all build directories.
+# Invoke the preset's clean target (removes built artifacts, keeps CMake cache).
 [group('dev')]
 clean:
-    rm -rf build
+    cmake --build --preset {{preset}} --target clean
 
 # Generate release notes for the given version, insert the corresponding
 # <release> entry into the appdata, and bump CMakeLists.txt versions.

tools/run-clang-tidy.ps1

@@ -34,15 +34,38 @@ if (-not (Test-Path "$buildDir/compile_commands.json")) {
 
 $buildDir = Resolve-Path $buildDir
 
-$tidyArgs = @("-p", $buildDir)
+# Strip CMake PCH flags from compile_commands.json before invoking clang-tidy.
+# CMake injects MSVC-style /Yu, /Yc, /Fp, and /FI cmake_pch.h flags, but the
+# resulting .pch is in MSVC's binary format which Clang cannot read, causing
+# "file doesn't start with precompiled file magic" errors. Write a filtered
+# copy of the database to a temp dir and point clang-tidy at it.
+$tempDbDir = Join-Path ([System.IO.Path]::GetTempPath()) "zeal-clang-tidy-db-$PID"
+New-Item -ItemType Directory -Path $tempDbDir -Force | Out-Null
+
+$compileDb = Get-Content "$buildDir/compile_commands.json" | ConvertFrom-Json
+foreach ($entry in $compileDb) {
+    $cmd = $entry.command
+    # MSVC / clang-cl style.
+    $cmd = $cmd -replace '\s+/Yu\S*', ''
+    $cmd = $cmd -replace '\s+/Yc\S*', ''
+    $cmd = $cmd -replace '\s+/Fp\S*', ''
+    $cmd = $cmd -replace '\s+/FI\S*cmake_pch\S*', ''
+    # GCC / Clang style.
+    $cmd = $cmd -replace '\s+-include\s+\S*cmake_pch\S*', ''
+    $cmd = $cmd -replace '\s+-include-pch\s+\S*\.pch', ''
+    $entry.command = $cmd
+}
+$compileDb | ConvertTo-Json -Depth 100 | Set-Content -Path (Join-Path $tempDbDir "compile_commands.json")
+
+$tidyArgs = @("-p", $tempDbDir)
 if ($Check) {
     if ($Check -match '^clang-diagnostic-(.+)$') {
         # clang-diagnostic-* checks can't be enabled via Checks; use a no-op check
         # as a placeholder and enable the compiler warning via -extra-arg.
-        $tidyArgs += "--config={Checks: '-*,android-cloexec-accept', HeaderFilterRegex: 'src.*'}"
+        $tidyArgs += "--checks=-*,android-cloexec-accept"
         $tidyArgs += "-extra-arg=-W$($Matches[1])"
     } else {
-        $tidyArgs += "--config={Checks: '-*,$Check', HeaderFilterRegex: 'src.*'}"
+        $tidyArgs += "--checks=-*,$Check"
     }
 }
 if ($Fix) {
@@ -52,7 +75,6 @@ if ($Fix) {
 $srcDir = Join-Path -Path $PSScriptRoot -ChildPath "..\src"
 
 # Only process files present in compile_commands.json to skip platform-specific files.
-$compileDb = Get-Content "$buildDir/compile_commands.json" | ConvertFrom-Json
 $dbFiles = $compileDb | ForEach-Object { [System.IO.Path]::GetFullPath($_.file) }
 
 if ($Staged) {
@@ -70,13 +92,45 @@ if ($Staged) {
 
 if (-not $files) {
     Write-Information "No files to process."
+    Remove-Item -Recurse -Force $tempDbDir
     exit 0
 }
 
-foreach ($file in $files) {
+# Tally warnings by check name as clang-tidy output streams through.
+# Each warning/error line ends with "[check-name]" or "[check1,check2,...]".
+$counts = @{}
+
+try {
+    foreach ($file in $files) {
         Write-Verbose "Processing $file"
-    & clang-tidy @tidyArgs --quiet $file
+        & clang-tidy @tidyArgs --quiet $file 2>&1 | ForEach-Object {
+            $line = "$_"
+            $line
+            if ($line -match '\[([a-zA-Z0-9.,_-]+)\]\s*$') {
+                foreach ($check in $Matches[1] -split ',') {
+                    $check = $check.Trim()
+                    if ($counts.ContainsKey($check)) {
+                        $counts[$check]++
+                    } else {
+                        $counts[$check] = 1
+                    }
+                }
+            }
+        }
         if ($LASTEXITCODE -ne 0) {
             exit 1
         }
+    }
+} finally {
+    Remove-Item -Recurse -Force $tempDbDir
+    if ($counts.Count -gt 0) {
+        ""
+        "Warning summary:"
+        $counts.GetEnumerator() | Sort-Object Value -Descending | ForEach-Object {
+            "  {0,6}  {1}" -f $_.Value, $_.Key
+        }
+        $total = ($counts.Values | Measure-Object -Sum).Sum
+        "  ------"
+        "  {0,6}  total" -f $total
+    }
 }