Add Deep Agents UI, pipeline fixes, and agent improvements.

Includes deep-agents-ui integration, rework detection via Gitea,
tool-call sanitization fixes, and startup scripts.

scripts/start_agent_ui.ps1

@@ -0,0 +1,14 @@
+# Запуск LangGraph API + Deep Agents UI в двух окнах
+$ErrorActionPreference = "Stop"
+$Root = Split-Path -Parent $PSScriptRoot
+
+Write-Host "Starting brojs-agent UI stack..."
+Write-Host "  LangGraph API: http://127.0.0.1:2024"
+Write-Host "  Deep Agents UI: http://localhost:3000"
+Write-Host ""
+
+Start-Process powershell -ArgumentList "-NoExit", "-File", (Join-Path $PSScriptRoot "start_langgraph.ps1")
+Start-Sleep -Seconds 3
+Start-Process powershell -ArgumentList "-NoExit", "-File", (Join-Path $PSScriptRoot "start_deep_ui.ps1")
+
+Write-Host "Both services started in separate windows."