[hazeliscoding]

Matches Community Edition's README layout:

• The header is "PUZZLE BOY / PRESERVATION PORT" in the game's own title lettering, on a transparent ground.
• A 25 s tour GIF rendered by the port at the original's speed: the Manikin Kid before stage 1, then a view turn, the overhead view and an undo from the □ menu in stages 2 and 3.
• A 3×2 gallery: the Manikin Kid, the □ menu, COMPLETE!, stages 5, 10 and 20.

Every image is rendered from a local copy of the game and hosted as an upload (issue #6), so nothing from the game enters the repo. Also fixes the stale "no release yet" line about Community Edition, and records the decision in ROADMAP.md.