What problem does it solve? Building a Wordle-style daily puzzle mode without a backend requires every player worldwide to receive the identical puzzle on the same day, while streaks, records, and share strings must survive offline play, clock skew, and storage failures. ## Core Features & Use Cases - Deterministic seeding: Derives the puzzle seed from the UTC date key via FNV-1a hash into mulberry32, salted per difficulty so modes never spoil each other. - Rotating rule variants: Picks a daily rule twist from a variant table indexed by day number, keeping consecutive days distinct without new content. - Records, streaks, and share text: Enforces first-attempt-counts records, idempotent streak updates computed against the record's own date, and spoiler-free share strings. - Use Case: When adding a daily mode to a browser game, apply these patterns so a player in Tokyo and a player in New York solve the same puzzle, offline completions sync without breaking streaks, and corrupted localStorage data never crashes the run. ## Quick Start Ask the AI to add a daily seeded mode to the game following the daily-seeded-runs skill, with UTC date keys, deterministic generation, and spoiler-free share text.
