fix(uninstall): reconcile extension-only installs

TODO.md

@@ -23,7 +23,7 @@
 - [x] Keep terminal newlines in Bash-managed files that need substitution. Command substitution strips trailing newlines before Bash hashes and writes the content, while PowerShell retains them; switching installers causes needless file changes and backups. (`scripts/lib/manifest.sh:70`, `scripts/lib/manifest.ps1:75`)
 - [x] Parse the Bash plugin inventory as JSON and stop when listing fails. `plugin_installed()` searches for one exact spacing pattern and suppresses CLI errors; a minified response or listing failure marks installed plugins unchecked, allowing an update to remove owned plugins. PowerShell parses JSON and fails on a CLI error. (`scripts/lib/plugins.sh:4`, `scripts/lib/plugins.ps1:36`)
 - [x] Serialize Bash manifest entries without shell word splitting. `write_managed_manifest()` loops over command substitution; a managed filename containing spaces becomes multiple invalid entries and can no longer be reconciled correctly. (`scripts/lib/manifest.sh:47`)
-- [ ] Allow uninstall to reconcile owned extensions when file manifests are missing. Both uninstall commands stop with “Not installed” based only on destination manifests, even if `extensions.json` still owns plugins, skills, or MCP servers. (`scripts/commands/uninstall.ps1:21`, `scripts/commands/uninstall.sh:34`)
+- [x] Allow uninstall to reconcile owned extensions when file manifests are missing. Both uninstall commands stop with “Not installed” based only on destination manifests, even if `extensions.json` still owns plugins, skills, or MCP servers. (`scripts/commands/uninstall.ps1:21`, `scripts/commands/uninstall.sh:34`)
 
 ## Rules, checks, and documentation
 

scripts/commands/uninstall.ps1

@@ -18,7 +18,7 @@ $generated = Join-Path $root 'generated'
 $targets = @(Get-InstallTargets -Generated $generated -HomePath $homePath -Shell 'bash' -Client $Client)
 $installedTargets = @($targets | Where-Object { Test-Path -LiteralPath (Get-ManagedManifestPath $_.Destination) })
 
-if (-not $DryRun -and $installedTargets.Count -eq 0) { throw 'Not installed, nothing to uninstall.' }
+if (-not $DryRun -and $installedTargets.Count -eq 0 -and -not (Test-Path -LiteralPath (Join-Path $homePath '.my-ai-configuration/extensions.json'))) { throw 'Not installed, nothing to uninstall.' }
 
 if (-not $DryRun -and -not $Force) {
     if ([Console]::IsInputRedirected -or $env:CI -eq 'true' -or $env:AI_CONFIG_NO_INTERACTIVE -eq '1') {

scripts/commands/uninstall.sh

@@ -30,7 +30,7 @@ installed_count=0
 for target_pair in "${targets[@]}"; do
   [ -f "$(manifest_path "${target_pair#*|}")" ] && installed_count=$((installed_count + 1))
 done
-if [ "$dry_run" = false ] && [ "$installed_count" -eq 0 ]; then
+if [ "$dry_run" = false ] && [ "$installed_count" -eq 0 ] && [ ! -f "$home_path/.my-ai-configuration/extensions.json" ]; then
   printf 'Not installed, nothing to uninstall.\n' >&2
   exit 1
 fi