chore: remove stale agent reports and add PYTHONDONTWRITEBYTECODE export to Makefile

Delete four stale SEO and style agent report JSON/MD files from agents/reports/ that had zero findings or were superseded. Export PYTHONDONTWRITEBYTECODE=1 in the Makefile so all make targets suppress bytecode generation, and add a `tree` target that lists the repository file tree via git ls-tree. Update AGENTS.md and CLAUDE.md documentation to reflect that routers now form a directory tree mirroring URL paths and that bytecode writing is disabled project-wide.

devplacepy/routers/profile/__init__.py

@@ -0,0 +1,13 @@
+# retoor <retoor@molodetz.nl>
+
+from fastapi import APIRouter
+
+from devplacepy.routers.profile import customization, index, notifications
+from devplacepy.routers.profile.usage import _ai_quota
+
+router = APIRouter()
+router.include_router(index.router)
+router.include_router(customization.router)
+router.include_router(notifications.router)
+
+__all__ = ["router", "_ai_quota"]