feat: ROM-hack dedup, conflict resolution, and vault library_path resync

Catalog cleanup pass across gb/gbc/gba/nds/3ds:
- Standardize nonstandard hack filenames to `Pokemon - <Name> [Hack].<ext>`;
  remove verified byte-identical duplicates (conform-rom-names.sh).
- Resolve 9 version-conflicts via side-by-side emulator comparison
  (resolve-version-conflicts.sh): promote newer builds, keep genuine
  distinct hacks, fix a mislabeled Dark Rising slot (was the Digimon
  crossover "Worlds Collide"), and rebuild Mega Power 5.77 + HeartGold
  Generations v2.0 fresh from their patches.
- Resync 286 vault notes' `library_path` to the real on-disk [Hack] files
  and fix 15 stale platform fields (resync-vault-library-paths.py).
- Regenerate MOC tables + wiki/catalog.json (396 notes).

Also includes pending Playnite PC-hack setup/repair scripts.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

scripts/repair-playnite-after-pc-hack.ps1

@@ -0,0 +1,67 @@
+<#
+.SYNOPSIS
+  Undo Playnite damage from setup-playnite-pc-hack.ps1 LiteDB writes.
+
+  Fixes:
+  1. Removes broken GameScannerConfig (null emulator, scoop\apps) from scanners.db
+  2. Clears active library filter that restricts view to RomM only
+  3. Disables pc_windows RomM mapping until emulator is recreated in Playnite UI
+
+  Playnite must be fully closed before running.
+#>
+$ErrorActionPreference = 'Stop'
+
+if (Get-Process -Name 'Playnite*' -ErrorAction SilentlyContinue) {
+    throw 'Close Playnite completely, then re-run.'
+}
+
+$playniteConfig = Join-Path $env:LOCALAPPDATA 'Playnite\config.json'
+$scannersDb     = Join-Path $env:LOCALAPPDATA 'Playnite\library\scanners.db'
+$rommConfig     = Join-Path $env:LOCALAPPDATA 'Playnite\ExtensionsData\9700aa21-447d-41b4-a989-acd38f407d9f\config.json'
+$liteDbDll      = Join-Path $env:LOCALAPPDATA 'Playnite\LiteDB.dll'
+$orphanEmuId    = 'fa12bc5e-dbb9-4d21-b1e6-a67c2fa6a513'
+$nullEmuId      = '00000000-0000-0000-0000-000000000000'
+
+# --- 1. Remove broken emulator scanner ---
+Add-Type -Path $liteDbDll
+$db = [LiteDB.LiteDatabase]::new("Filename=$scannersDb")
+$col = $db.GetCollection('GameScannerConfig')
+$removed = 0
+foreach ($doc in @($col.FindAll())) {
+    $emuId = if ($doc['EmulatorId'].IsGuid) { $doc['EmulatorId'].AsGuid.ToString() } else { $doc['EmulatorId'].AsString }
+    $dir = if ($doc.ContainsKey('Directory')) { $doc['Directory'].AsString } else { '' }
+    if ($emuId -eq $nullEmuId -or $dir -like '*\scoop\apps') {
+        $col.Delete($doc['_id']) | Out-Null
+        $removed++
+        Write-Host "Removed broken scanner: Directory=$dir EmulatorId=$emuId"
+    }
+}
+$db.Dispose()
+if ($removed -eq 0) { Write-Host 'No broken GameScannerConfig entries found.' }
+
+# --- 2. Clear RomM-only library filter ---
+$cfg = Get-Content -Raw $playniteConfig | ConvertFrom-Json
+if ($cfg.FilterSettings.Library -and $cfg.FilterSettings.Library.Ids -and $cfg.FilterSettings.Library.Ids.Count -gt 0) {
+    $ids = @($cfg.FilterSettings.Library.Ids)
+    Write-Host "Clearing library filter (was: $($ids -join ', '))"
+    $cfg.FilterSettings.Library.Ids = @()
+}
+$cfg | ConvertTo-Json -Depth 20 | Set-Content -Encoding UTF8 $playniteConfig
+Write-Host 'Playnite config: library filter cleared.'
+
+# --- 3. Disable orphan pc_windows RomM mapping ---
+$romm = Get-Content -Raw $rommConfig | ConvertFrom-Json
+$pc = $romm.Mappings | Where-Object { $_.PlatformId -eq 'pc_windows' } | Select-Object -First 1
+if ($pc) {
+    if ($pc.EmulatorId -eq $orphanEmuId) {
+        $pc.Enabled = $false
+        Write-Host "Disabled pc_windows RomM mapping (orphan emulator $orphanEmuId)."
+        Write-Host 'Re-enable after adding Pokemon PC Hack Launcher in Playnite UI.'
+    } else {
+        Write-Host "pc_windows mapping uses emulator $($pc.EmulatorId) - left enabled."
+    }
+    $romm | ConvertTo-Json -Depth 8 -Compress | Set-Content -Encoding UTF8 $rommConfig
+}
+
+Write-Host "`nDone. Open Playnite - full library should be visible again."
+Write-Host 'Emulated-game scan errors on startup should be gone.'