fix(lint): PSAvoidUsingEmptyCatchBlock 7件を修正 (closes #130)

scripts/lib/AgentTeams.psm1

@@ -152,7 +152,7 @@ function Get-BacklogRuleMatch {
         }
     }
     catch {
-        # rules file parse error - use defaults
+        Write-Debug "Agent rules file parse error (using defaults): $_"
     }
 
     return $result

scripts/lib/LauncherCommon.psm1

@@ -821,6 +821,7 @@ function Get-LauncherMetadataEntries {
                 $entries.Add(($line | ConvertFrom-Json))
             }
             catch {
+                Write-Debug "Skipping malformed JSON history entry: $_"
             }
             if ($entries.Count -ge $MaxCount) {
                 break
@@ -1321,12 +1322,13 @@ public class LauncherWinMM {
             $localAlias = $alias
             $null = [System.Threading.Tasks.Task]::Run([Action]{
                 Start-Sleep -Milliseconds 8000
-                try { [void][LauncherWinMM]::mciSendString("close $localAlias", $null, 0, [IntPtr]::Zero) } catch {}
+                try { [void][LauncherWinMM]::mciSendString("close $localAlias", $null, 0, [IntPtr]::Zero) } catch { Write-Debug "Audio close failed for '$localAlias': $_" }
             })
         }
     }
     catch {
         # 音声再生の失敗はサイレントに無視（起動をブロックしない）
+        Write-Debug "Audio playback failed (suppressed to avoid blocking startup): $_"
     }
 }
 Export-ModuleMember -Function Invoke-LauncherNotificationSound

scripts/lib/LogManager.psm1

@@ -76,7 +76,7 @@ function Stop-SessionLog {
     }
 
     # Transcript 停止
-    try { Stop-Transcript -ErrorAction SilentlyContinue } catch { }
+    try { Stop-Transcript -ErrorAction SilentlyContinue } catch { Write-Debug "Stop-Transcript skipped (no active transcript): $_" }
 
     $script:LoggingActive = $false
 

scripts/main/Start-ClaudeCode.ps1

@@ -421,7 +421,7 @@ finally {
     Invoke-LauncherNotificationSound -Tool 'claude' -Config $Config -Wait $true
     # インスタンスロック解放
     if ($null -ne $instanceMutex) {
-        try { $instanceMutex.ReleaseMutex() } catch { }
+        try { $instanceMutex.ReleaseMutex() } catch { Write-Debug "ReleaseMutex failed (mutex may already be released): $_" }
         $instanceMutex.Dispose()
     }
 }

scripts/test/Test-AllTools.ps1

@@ -40,6 +40,7 @@ function Get-CommandVersionLine {
         }
     }
     catch {
+        Write-Debug "Version detection failed for '$Command': $_"
     }
 
     return $null