Implemented all plan to-dos end-to-end, including regeneration of staged bins, and verified with build + booter tests.

What changed
Fixed /bin generation for AsyncFunction execution in build pipeline:
Added appctl preamble wiring (p2p-suite.js) in packages/bare-os-coreutils/build.mjs.
Added a stripRunExport transform to remove trailing export { run } from generated /bin scripts.
Updated cut delimiter parsing in packages/bare-os-coreutils/src/cut.js:
Supports both -d X and attached -dX forms (including -d' ').
Validates -d argument presence and enforces single-character delimiter.
Improved uname -a output in packages/bare-os-coreutils/src/uname.js:
Better release/version derivation from env and /etc/os-release.
Uses env-backed machine architecture fallback instead of hardcoded unknown where available.
Added help aliases in packages/bare-os-coreutils/src/git-pear.js:
git-pear --help and git-pear -h now map to help output.
Reduced persistent invalid timer spam in packages/bare-os-booter/lib/bare-cron.js:
Added per-file parse-error dedupe/rate-limiting (first-seen, content-change, then hourly).
Added actionable invalid timer format hint in log message.

kernel/bin/cut

@@ -88,14 +88,42 @@ function bareOsEmitRaw(ctx, chunk) {
 }
 
 async function run(ctx, argv) {
-  let delim = '\t'
+  let delimChar = '\t'
   let fieldsSpec = ''
   let suppressNoDelim = false
   const files = []
+  function decodeDelim(raw) {
+    if (raw === '\\t') return '\t'
+    if (raw === '\\n') return '\n'
+    if (raw === '\\0') return '\0'
+    return raw
+  }
   for (let i = 1; i < argv.length; i++) {
     const a = argv[i]
     if (a === '-d') {
-      delim = argv[++i] || ''
+      const raw = argv[++i]
+      if (raw == null) {
+        ctx.console.error('cut: option -d requires an argument')
+        ctx.exitCode = 1
+        return
+      }
+      const parsed = decodeDelim(raw)
+      if (parsed.length !== 1) {
+        ctx.console.error('cut: delimiter must be a single character')
+        ctx.exitCode = 1
+        return
+      }
+      delimChar = parsed
+      continue
+    }
+    if (a.startsWith('-d') && a.length > 2) {
+      const parsed = decodeDelim(a.slice(2))
+      if (parsed.length !== 1) {
+        ctx.console.error('cut: delimiter must be a single character')
+        ctx.exitCode = 1
+        return
+      }
+      delimChar = parsed
       continue
     }
     if (a === '-f') {
@@ -142,21 +170,14 @@ async function run(ctx, argv) {
     return
   }
 
-  const delimChar = delim === '\\t' ? '\t' : delim
-
   async function cutLines(text) {
     const lines = text.split(/\r?\n/)
     for (const line of lines) {
       if (line === '' && lines.length === 1) continue
-      if (
-        suppressNoDelim &&
-        delim !== '' &&
-        delimChar !== '' &&
-        !line.includes(delimChar)
-      ) {
+      if (suppressNoDelim && !line.includes(delimChar)) {
         continue
       }
-      const cols = delim === '' ? [...line] : line.split(delimChar)
+      const cols = line.split(delimChar)
       const out = []
       for (const n of [...want].sort((a, b) => a - b)) {
         out.push(cols[n - 1] != null ? cols[n - 1] : '')