Complete the internal “100 task” roadmap: coreutils and shell parity (xargs,

sh, diff/patch, sort, printf, find, test, getfacl/setfacl/xattr), expanded
/proc and metrics (process table, syscalls, replication, net, security
posture, worker budget, swarm/replication hints), initd DAG supervision
metadata and richer restart journal telemetry, synthetic process groups via
IPC (assignProcessGroup/signalProcessGroup) mirrored into process_table,
optional kernel.ext.d incremental hot reload (BARE_OS_KERNEL_EXT_D_HOT_RELOAD)
with reload audit NDJSON, features proc for hyperblobs dedup and systemd
subset documentation, vault threat model doc plus posture fields for AEAD,
Pear enclave pointer, account rotation continuity, and Ed25519 consistency
across boot manifest / extensions / replication. Adds or extends tests and
keeps kernel/ and packages/bare-os-seeder/kernel/ in parity; guest init is
bundled from kernel/lib/init/init-main.js via bundle-kernel-init.

packages/bare-os-booter/lib/shell.js

@@ -1700,7 +1700,23 @@ function scheduleBackgroundShell(ctx, toks) {
     ctx.shellBackgroundJobs = { nextId: 1, list: [] }
   }
   if (!ctx.shellSessionState) {
-    ctx.shellSessionState = { sid: 1, nextPgid: 300 }
+    ctx.shellSessionState = {
+      sid: 1,
+      nextPgid: 300,
+      foregroundPgid: 1,
+      controllingTty: '/dev/console'
+    }
+  } else if (ctx.shellSessionState.foregroundPgid == null) {
+    ctx.shellSessionState.foregroundPgid = ctx.shellSessionState.sid
+  }
+  if (!ctx.shellSessionState.controllingTty) {
+    const fifo =
+      (ctx.env && ctx.env.BARE_OS_SESSION_FIFO) ||
+      (ctx.env && ctx.env.BARE_OS_IPC_SESSION_FIFO) ||
+      ''
+    ctx.shellSessionState.controllingTty = fifo
+      ? `ipc:${String(fifo).trim()}`
+      : '/dev/console'
   }
   const id = ctx.shellBackgroundJobs.nextId++
   const pgid = ctx.shellSessionState.nextPgid++
@@ -2280,8 +2296,27 @@ export async function execShellLine(ctx, line) {
  */
 async function execShellLineInner(ctx, rawTrimmed) {
   if (!ctx.shellSessionState) {
-    ctx.shellSessionState = { sid: 1, nextPgid: 300 }
+    ctx.shellSessionState = {
+      sid: 1,
+      nextPgid: 300,
+      foregroundPgid: 1,
+      controllingTty: '/dev/console'
+    }
+  } else {
+    if (ctx.shellSessionState.foregroundPgid == null) {
+      ctx.shellSessionState.foregroundPgid = ctx.shellSessionState.sid
+    }
+    if (!ctx.shellSessionState.controllingTty) {
+      const fifo =
+        (ctx.env && ctx.env.BARE_OS_SESSION_FIFO) ||
+        (ctx.env && ctx.env.BARE_OS_IPC_SESSION_FIFO) ||
+        ''
+      ctx.shellSessionState.controllingTty = fifo
+        ? `ipc:${String(fifo).trim()}`
+        : '/dev/console'
+    }
   }
+  ctx.shellSessionState.foregroundPgid = ctx.shellSessionState.sid
   let execLine = rawTrimmed
   const readL = ctx.readLine
   if (typeof readL === 'function') {