ci: validate the #6276 follow-ups on Windows (branch-only, not for merge)

.github/fix-issue-6276/check-report.ps1

@@ -0,0 +1,59 @@
+# CI-only check for the #6276 follow-ups. Every #6276 spec must have run and passed: it fails on
+# any missing, skipped or failed spec in the groups below, and writes a summary to the job.
+param(
+    [Parameter(Mandatory)][string]$TestOutcome,
+    [Parameter(Mandatory)][string[]]$Reports
+)
+$ErrorActionPreference = 'Stop'
+
+# group (container text, or a spec name) = expected number of specs
+$groups = [ordered]@{
+    'PlaylistsPathPatterns'   = 19  # conf: Windows/Unix pattern conversion
+    'PlaylistsPath validation' = 7  # conf: conf.LoadFromFile
+    'InPath'                  = 35  # core/playlists: PR #6281 specs + scanner-built folders
+    'Scanner - PlaylistsPath' = 22  # scanner: real folders, phase 1 + phase 4, recovery
+    "produces different hash when PlaylistsPath starts including the folder's playlists" = 1
+    'keeps the hash of a folder without playlists when PlaylistsPath changes' = 1
+}
+
+$specs = @()
+$skipped = @()
+foreach ($r in $Reports) {
+    if (-not (Test-Path $r)) { throw "Missing Ginkgo report: $r" }
+    foreach ($suite in (Get-Content $r -Raw | ConvertFrom-Json)) {
+        foreach ($spec in $suite.SpecReports) {
+            if ($spec.LeafNodeType -ne 'It') { continue }
+            $specs += $spec
+            if ($spec.State -eq 'skipped') { $skipped += "$($spec.ContainerHierarchyTexts -join ' > ') > $($spec.LeafNodeText)" }
+        }
+    }
+}
+
+$problems = @()
+$rows = @('| Group | Expected | Ran | Passed |', '|---|---|---|---|')
+foreach ($g in $groups.Keys) {
+    $inGroup = @($specs | Where-Object { $_.ContainerHierarchyTexts -contains $g -or $_.LeafNodeText -eq $g })
+    $passed = @($inGroup | Where-Object { $_.State -eq 'passed' })
+    foreach ($s in ($inGroup | Where-Object { $_.State -ne 'passed' })) {
+        $problems += "$g > $($s.LeafNodeText): $($s.State)"
+    }
+    if ($inGroup.Count -ne $groups[$g]) { $problems += "$g : expected $($groups[$g]) specs, found $($inGroup.Count)" }
+    $rows += "| $g | $($groups[$g]) | $($inGroup.Count) | $($passed.Count) |"
+}
+if ($TestOutcome -ne 'success') { $problems += "Test step outcome: $TestOutcome" }
+
+$total = @($specs).Count
+$summary = @("## #6276 follow-ups on $([System.Environment]::OSVersion.VersionString)", '',
+    "All specs in conf, core/playlists, scanner: $total ($(@($specs | Where-Object State -eq 'passed').Count) passed, $($skipped.Count) skipped). Test step: **$TestOutcome**", '') + $rows
+if ($skipped.Count -gt 0) {
+    $summary += '', 'Skipped (pre-existing Windows skips, outside the #6276 groups):'
+    $summary += @($skipped | ForEach-Object { "- $_" })
+}
+if ($problems.Count -eq 0) {
+    $summary += '', '**Result: every #6276 spec ran and passed.**'
+} else {
+    $summary += '', '**Result: FAILED**'
+    $summary += @($problems | ForEach-Object { "- $_" })
+}
+$summary -join "`n" | Tee-Object -Append -FilePath $env:GITHUB_STEP_SUMMARY
+if ($problems.Count -gt 0) { exit 1 }

.github/workflows/fix-issue-6276-windows.yml

@@ -0,0 +1,65 @@
+# CI-only validation of the #6276 follow-ups to PR #6281 on a native Windows runner. Runs the full
+# conf, core/playlists and scanner packages, then checks every #6276 spec ran and passed.
+name: "Fix #6276: Windows PlaylistsPath"
+
+on:
+  push:
+    branches:
+      - t3code/fix-issue-6276-pr6281-followups
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  windows:
+    name: Windows
+    runs-on: windows-2022
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+        with:
+          persist-credentials: false
+
+      - uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6
+        with:
+          go-version-file: go.mod
+
+      - uses: msys2/setup-msys2@ec48f7c5447b3140e2b088413ae3a55687bccb6e # v2
+        with:
+          msystem: MINGW64
+          install: mingw-w64-x86_64-gcc
+          update: false
+
+      - name: Add mingw64 to PATH
+        shell: bash
+        run: echo "C:/msys64/mingw64/bin" >> $GITHUB_PATH
+
+      - name: Build test binaries
+        shell: bash
+        env:
+          CGO_ENABLED: "1"
+        run: |
+          go version
+          go test -count=1 -tags netgo,sqlite_fts5 -run '^$' ./conf/ ./core/playlists/ ./scanner/
+
+      - name: Test conf, core/playlists, scanner
+        id: test
+        shell: bash
+        env:
+          CGO_ENABLED: "1"
+        # Some suites change to the repo root, so use absolute report paths. All packages always run.
+        run: |
+          rc=0
+          for pkg in conf:./conf/ playlists:./core/playlists/ scanner:./scanner/; do
+            go test -v -count=1 -timeout 15m -tags netgo,sqlite_fts5 "${pkg#*:}" -ginkgo.no-color \
+              -ginkgo.json-report="$GITHUB_WORKSPACE/report-${pkg%%:*}.json" || rc=1
+          done
+          exit $rc
+
+      - name: Check every #6276 spec ran and passed
+        if: always() && steps.test.outcome != 'skipped'
+        shell: pwsh
+        run: >
+          ./.github/fix-issue-6276/check-report.ps1 -TestOutcome ${{ steps.test.outcome }}
+          -Reports report-conf.json, report-playlists.json, report-scanner.json