lib: banner purge + WHY-only comment sweep (rule 8)

Every // ---- section banner dies (132 -> 0): names carry the WHAT.
Narration deleted (filename restatements, run-with lines, what-the-
next-line-does); every ref/hare cite, task cite, divergence, ABI/
layout contract, and ownership qualifier kept (borrowed-view lines
restored where the sweep over-cut). Comment-only proven: all 442
walk-workdir .s and 32 import-probe .s byte-identical before/after;
libbyteid 56-roster all-ID.

lib/temp/temp.ww

@@ -113,9 +113,8 @@ fn nextrand() u64 = {
 // exposes getenv; documented in the file header.
 fn gettmpdir() str = { return "/tmp"; };
 
-// puts — copy `s` into pathbuf starting at `off`. Caps writes
-// against pathbuf's capacity so a long caller-supplied dir can't
-// run off the end. Returns the new offset.
+// Caps writes against pathbuf's capacity so a long caller-supplied
+// dir can't run off the end.
 fn puts(off: i32, s: str) i32 = {
 	let i: i32 = 0;
 	for (i < s.len) {
@@ -126,7 +125,6 @@ fn puts(off: i32, s: str) i32 = {
 	return off + i;
 };
 
-// puthex — 16 lowercase hex digits of `v` into pathbuf[off..off+16].
 fn puthex(off: i32, v: u64) i32 = {
 	let hex: str = "0123456789abcdef";
 	let i: i32 = 0;