fix(registry): wasm vim raw-mode input as a shell child#263
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- wasm-runner: kernel-managed stdio is authoritative TTY for fd 0/1/2 (terminal detection + fd 1/2 writes route through the PTY before passthrough delegation) - vim bridge overrides __isatty as well as isatty, and links termios_bridge.o directly so the overrides win over wasi-libc so a full-screen app (vim) spawned by the shell enters raw mode and receives keystrokes instead of cooked-echoed line input.
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__isattyas well asisattyand linkstermios_bridge.odirectly so the overrides win over wasi-libc:wq) instead of cooked-echoed line input; no "not a terminal" warningsjust shelltmux session (i → INSERT, typed text lands in the buffer,:wqwrites the file)