feat(mma): Complete Phase 3 context features (injection, dependency mapping, logging)

scripts/run_subagent.ps1

@@ -37,7 +37,7 @@ SYSTEM PROMPT: $SelectedPrompt
 USER PROMPT: $Prompt
 --------------------------------------------------
 "@
-$LogEntry | Out-File -FilePath $LogFile -Append
+$LogEntry | Out-File -FilePath $LogFile -Append -Encoding utf8
 
 if ($ShowContext) {
     Write-Host "`n[MMA ORCHESTRATOR] Spawning Tier: $Role" -ForegroundColor Cyan
@@ -59,7 +59,7 @@ try {
         $parsed = $cleanJsonString | ConvertFrom-Json
         
         # Log response
-        "RESPONSE:`n$($parsed.response)" | Out-File -FilePath $LogFile -Append
+        "RESPONSE:`n$($parsed.response)" | Out-File -FilePath $LogFile -Append -Encoding utf8
         
         # Output only the clean response text
         Write-Output $parsed.response