feat: add pi

.config/pi/agent/AGENTS.md

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+# Git instructions
+
+- Adhere to https://www.conventionalcommits.org for commit messages
+- Maintain a `CHANGELOG.md` file adhering to https://keepachangelog.com and try
+  to map the conventional commit messages to the respective sections of keep a
+  changelog
+- When creating branches, prefix them with "pi-"
+
+# Test instructions
+
+- Write tests in the natural tooling for the used programming language
+- When doing HTTP tests, use Cypress
+
+# Style instructions
+
+- Avoid emojis in code outputs unless it adds significant visual help
+- Use `NOTE:`, `FIXME:`, `XXX:` markers in comments where beneficial
+- Never use emojis in Markdown files
+- Keep line length to 80 characters in Markdown files, but do not split URLs or
+  code fragments (variable/function names etc.).

.config/pi/agent/APPEND_SYSTEM.md

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+Additional preferences:
+
+- If something is potentially dangerous, mention it by prefixing it with "[DANGER] [DANGER] [DANGER] "
+- When doing Node code, use pnpm instead of npm