fix(v4.0.0): step 6e review round 2 -- only the message looked at is taken, moved or dropped; the kernel's port has no queue in a fabric; an answer nobody awaits is not a loss

- Engine: a wire keeps whether the message at its mark is the one last
  looked at; a node's take, move and drop of any other answer 3 and write
  nothing (MESH.md 7d.3).  A wire cut and made again between a look and a
  take no longer has a NACK done as text, or 256 cells written where one
  was looked for.
- Engine: v4_fabric_wire_kernel wires a kernel to a port with no queues;
  a message for it is refused at once, error 18, on a mesh as on the
  products.
- The result of a drop is looked at; a take that does not take has the
  message dropped, or gone past: nothing goes round.
- An answer nobody waits for is let go uncounted; (LOST) counts what should
  have been delivered or acted on and was not.  The flood's account is
  exact.
- Error 18 from under a word that was printing empties the data stack, as
  a fault does: that word's own values are not left there.
- Tests: the take and drop windows cut at every step, with and without
  another message put; a refusal owed to a stuck node whose wire is full.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

v4/Makefile

@@ -206,8 +206,8 @@ hosted-check: $(foreach i,$(HOSTED_ISAS),$(BINDIR)/boot-$(i).txt) $(BINDIR)/star
 	@grep -q '^ok> Stack overflow$$' $(BINDIR)/deep-amd64.txt && grep -q '^ok> 3  ok$$' $(BINDIR)/deep-amd64.txt || { echo "hosted-check: a line that left 29 values on the stack was not an error the node came back from"; tail -4 $(BINDIR)/deep-amd64.txt; exit 1; }
 	@printf '1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26\nWORDS\nDEPTH .\n' | $(BINDIR)/starforth4-amd64 > $(BINDIR)/deepwords-amd64.txt 2>&1; true
 	@grep -q 'DUP' $(BINDIR)/deepwords-amd64.txt && grep -q '^ok> 26  ok$$' $(BINDIR)/deepwords-amd64.txt || { echo "hosted-check: WORDS with 26 values on the stack did not print and come back"; tail -4 $(BINDIR)/deepwords-amd64.txt | cut -c1-200; exit 1; }
-	@printf '1 0 ROUTE\n65 EMIT\n: P 400 0 DO I . LOOP ; P\nNO-ROUTES\n1 2 + .\n' | timeout 120 $(BINDIR)/starforth4-amd64 > $(BINDIR)/kport-amd64.txt 2>&1; true
-	@test $$(grep -c '^ok>  ERROR$$' $(BINDIR)/kport-amd64.txt) -eq 2 && grep -q '^ok> 3  ok$$' $(BINDIR)/kport-amd64.txt || { echo "hosted-check: with the way to the console set to the kernel's port, a line that prints did not end in an error at the prompt, or the node did not come back"; tail -6 $(BINDIR)/kport-amd64.txt; exit 1; }
+	@printf '1 0 ROUTE\n65 EMIT\n: P 400 0 DO I . LOOP ; P\nNO-ROUTES\nDEPTH .\n1 2 + .\n' | timeout 120 $(BINDIR)/starforth4-amd64 > $(BINDIR)/kport-amd64.txt 2>&1; true
+	@test $$(grep -c '^ok>  ERROR$$' $(BINDIR)/kport-amd64.txt) -eq 2 && grep -q '^ok> 3  ok$$' $(BINDIR)/kport-amd64.txt && grep -q '^ok> 0  ok$$' $(BINDIR)/kport-amd64.txt || { echo "hosted-check: with the way to the console set to the kernel's port, a line that prints did not end in an error at the prompt, or left something on the stack, or the node did not come back"; tail -6 $(BINDIR)/kport-amd64.txt; exit 1; }
 	@printf ': S0 S" 1 DROP" 0 0 SEND-ON ; S0\n1 2 + .\n65 1 BLOCK C! 1 BLOCK C@ .\n' | timeout 120 $(BINDIR)/starforth4-amd64 > $(BINDIR)/ksend-amd64.txt 2>&1; true
 	@grep -q '^ok> No one on that port$$' $(BINDIR)/ksend-amd64.txt && grep -q '^ok> 3  ok$$' $(BINDIR)/ksend-amd64.txt && grep -q '^ok> 65  ok$$' $(BINDIR)/ksend-amd64.txt || { echo "hosted-check: a message sent to the kernel's port was not refused with No one on that port, or the kernel's requests no longer work"; tail -6 $(BINDIR)/ksend-amd64.txt; exit 1; }
 	@python3 $(HERE)/tools/depthsweep.py $(BINDIR)/starforth4-amd64 $$(( $(HOST_DATA_RING) + 2 )) $$(( $(HOST_RET_RING) + 1 )) || { echo "hosted-check: at some depth of a stack a line was not answered, or the node did not come back"; exit 1; }