Room.Subscribe() now returns a channel of parsed Message structs
instead of raw NATS messages. The room handles NATS subscription
and message parsing internally, so callers no longer need to call
Receive() separately.
Previously patchAll() re-rendered the full GameContent on every chat
message, which was inefficient and could cause UI glitches. Now we
append just the new ChatMessage to the chat history element.
Replace invalid .key_enter and .enter modifiers with evt.key === 'Enter'
guard in the expression, per Datastar docs. Also fix __stop and __throttle
modifier syntax to use double underscores.
Move SaveMessage/LoadMessages logic into Room as private methods.
NewPersistentRoom auto-loads history and auto-saves on Send, removing
the need for handlers to coordinate persistence separately.
Create chat/ package with Message type, Room (NATS pub/sub + buffer),
DB persistence helpers, and a unified templ component parameterized by
Config (CSS prefix, post URL, color function, key propagation).
Both c4game and snakegame now use chat.Room for message management and
chatcomponents.Chat for rendering, eliminating the duplicated
ChatMessage types, chat templ components, chatAutoScroll scripts,
color functions, and inline buffer management.
