Add Playwright MCP, Superpowers and Remember output

Playwright MCP, the Superpowers brainstorming companion and the
claude-remember plugin write generated, machine-local data into the
project directory by default (.playwright-mcp/, .superpowers/ and
.remember/). None of it is shared project configuration.

Global/Agents.gitignore

@@ -63,6 +63,11 @@ gemini-debug.log
 # .tabnineignore
 # .tabnine/
 
+# Agent tool output written into the project
+.playwright-mcp/
+.remember/
+.superpowers/
+
 # GitHub Copilot
 # .github/copilot-instructions.md