feat(booter): complete P2P POSIX roadmap items and doc alignment

- ADRs under docs/adr/; KERNEL_CONTRACT + env appendix + handbook updates
- socketMsgSurface schema 5; replication_snapshot schema 2; syscall/example + tests
- MBR pacing docs/microbench; export mbrReadTimeoutMsForDisk; shell passthrough envs
- verify-ctx-api-feature-bits: syscall schema vs posix-compliance-matrix
- Wasm hostname import, disk.os snapshot hints, kernel-ext resolution docs
- coreutils nice + matrix/dashboard; syscalls.example ctxApiVersion 1.51.1
- Seeder kernel rsync parity; assorted booter/protocol doc fixes

packages/bare-os-booter/lib/git-cli.js

@@ -67,8 +67,8 @@ function gitAuthor(ctx) {
   }
 }
 
-function printHelp(console) {
-  console.log(`bare-os git (isomorphic-git) — not full GNU git.
+function printHelp(sink) {
+  sink.log(`bare-os git (isomorphic-git) — not full GNU git.
 
 Usage: git [--git-dir <path>] [-C <path>] <command> [args]