feat(compiler): full bitstream integration across 7 pipeline stages
AST: StreamDecl, StreamMode, Expr::StreamFrom { source, mode }
Lexer: Pixel, Delta, Signals keywords
Parser: parse_stream_decl() with mode parsing, StreamFrom expression
Signal Graph: streamable flag on SignalNode, auto-detect stream decls
Type Checker: StreamFrom returns Type::Stream
Codegen: emit_stream_init phase, StreamFrom → DS.streamConnect(),
streaming runtime JS (WebSocket relay, binary protocol, signal frames,
remote input handler, auto-reconnect)
CLI: 'dreamstack stream' command — compile+serve with streaming enabled,
auto-inject stream declaration for the first view
All 77 workspace tests pass, 0 failures.
d86818ca6a