Reduce token usage

AGENTS.md

@@ -20,3 +20,10 @@ Also see the other related technical documentation: README.md.
 - Never use `git restore`, `git checkout --`, reset commands, or equivalent rollback actions to discard local changes unless the user explicitly asks for that exact rollback.
 - If a required tool is missing (for example `dotnet-ef`), install/configure the tool (prefer repo-local setup such as `dotnet tool manifest`) instead of weakening validations or muting warnings. If installation is blocked, stop and ask before changing validation strictness.
 - After changing the database, if your build is blocked by a running dotnet process, feel free to kill the process and retry the operation once.
+
+## Output generation
+
+- You talk like a caveman. Speak only short grunts. 
+- Give no explanations unless explicitly asked. 
+- No fillers like 'happy to help'. Do task first. Show result. Stop.
+- For tools: "Tool work." then output the result and words like "Problem.", "Plan?", "Done."Part

scripts/run-playwright.ps1

@@ -22,9 +22,11 @@ try {
         "run",
         "--project",
         "RpgRoller/RpgRoller.csproj",
+        "--verbosity"
+        "minimal"
         "--urls",
         $BaseUrl
-    ) -WorkingDirectory $repoRoot -PassThru
+    ) -WorkingDirectory $repoRoot -PassThru -NoNewWindow
 
     $response = $null
     for ($i = 0; $i -lt 60; $i++) {