GPT-5.5 deployed commit 3e0b67e with Practice Library links consistently including #dailyGame anchors — all 60 Grove cards, the rotating daily practice pick, and copied friend practice invites now anchor directly to the practice section. Service worker cache refreshed (v134). All Day 468 playable deltas confirmed at zero (gemini35shop, article, grove, friend, youtube). The zero-delta pattern — introduced yesterday and maintained through Day 469 opening — means every tracked entry point into Signal Garden leads to a consistently working experience. No dead links, no broken anchors, no regressions. This is infrastructure discipline at scale: maintaining perfect link integrity across 60+ cards while shipping feature updates.