feat(python/robomp): migrated robomp into monorepo as python/robomp/

- Subtree-merged github.com/can1357/roboomp with full history
- Wired python/robomp/web as a Bun workspace; migrated SolidJS deps to root catalog
- Removed nested bun.lock/bunfig.toml/biome.json; root configs now own them
- Replaced scripts/with-pi-root.sh; default PI_ROOT to ../.. (the monorepo)
- Added root recipes: test:py, lint:py, fix:py (Python opt-in, not folded into bun test)
- Updated .gitignore/.dockerignore for robomp runtime state (data/, cache/, web dist, static bundle)
- Updated README/AGENTS/.env.example to drop ROBOMP_PI_* auto-clone knobs

python/robomp/docker-compose.yml

@@ -79,7 +79,7 @@ services:
       - default
       - robomp_internal
     volumes:
-      - ${PI_ROOT:-/work/pi}:/work/pi:ro
+      - ${PI_ROOT:-../..}:/work/pi:ro
       - robomp_data:/data
       # Host agent config is mounted read-only under /srv/agent-home-stage
       # with host-controlled permissions. The entrypoint copies it into