wired

Keep docs/syscalls.md in sync with src/common/platform/sys/syscall.h and any locally-#define'd SYS_* numbers. Use whenever a syscall is added, removed, or its call site/purpose changes in this repo — e.g. after adding a new `#define SYS_*`, after adding/removing a `syscall1/3/4/6(...)` call site, or when asked to "update the syscall docs" / "syscallの説明を更新".

Use when modifying, adding to, or reviewing code in the wired libc-free QUIC SDK in C — covers its libc-free / CCN<=3 / unity-build constraints, the three-point verification gate, the unity-build name-collision pitfalls, the view-API and freestanding-_start traps, and the parallel-implement / serial-wire workflow, plus how to diagnose a slow handshake (profile-first, peer qlog, stage timestamps, microbenchmarks) and speed up crypto safely. Trigger on any change under src/ or tests/, on "add a domain", "wire a test", "why does run.c fail to build", "obj count mismatch", "CCN too high", on "handshake is slow" / "appconnect takes seconds" / "why is it slow" / "speed up", or before committing C changes in this repo.

Use when deciding how many subagents to run in parallel, when asked to "increase parallelism" / "use more agents" / "並列数を上げて", or before launching a batch of background agents. Measures CPU/memory/load of the real machine and classifies the work as parallelizable vs serial vs indivisible to pick a safe maximum, instead of guessing. Trigger on "how many agents", "spin up more workers", "parallelize this", "max out the cores", or when a parallel batch is about to start saturating the box.