feat(v4): HEAT-OP[0..31] and ANTICLOCK, read by HEAT-OP@ and ANTICLOCK@

#189 -- Captain Bob, 2026-11-12: "Add HEAT-OP. If it's a huge performance
hit, we'll revert it. If not ... it stands"; a full 33-cell array, as
DECOMPOSITION.md section 7 draws it; the Stadium feed is Phase 1's.

- node.h/node.c: v4_node_heat_regs_attach; a data fetch from base+k gives
  opcode k's count, base+32 the anti-clock (the low cell at 32 bits); a
  store changes nothing. Reset detaches them.
- host_map.h: HEAT_REG at word 13824, in what was free between the
  dictionary space and SEND_TEXT; the compile-time check covers it.
  Nothing moved. map-*.f18: HEAT-OP 13824, ANTICLOCK 13856.
- image.h/image.c/mkmap.c: the image carries the address; v4_image_born
  attaches the node's own counts.
- system.f18: HEAT-OP@ ( op -- n ), op mod 32; ANTICLOCK@ ( -- n ).
  word_count 318 -> 320 (hosted 317 -> 319): dict_hash changes.
- v4-dictionary.tsv: both words; DECOMPOSITION.md 7 records the build.

Also in this batch:
- Makefile: make init installs qemu-user -- hosted-check needs it
  (Captain Bob: "Add to make init now").
- .claude/memory/rules.md, rule 5: stop and ask when something comes up
  (Captain Bob: "you are supposed to stop and ask").

Tests first (logs/20261113-005047/heat-op): test_node did not compile;
test_host_quit 3 of 1337 failed. Suite: 199 programs, 7448554 checks, 0
failures; hosted-check, the three alike. Timing: no measurable cost.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017RzZgrf7V7Zk2iczBXDRbm

docs/reference/v4-dictionary.tsv

@@ -100,6 +100,7 @@ AGAIN	( -- )	Compile-only: end a BEGIN loop that repeats for ever.
 ALIGN	( -- )	Align the dictionary pointer to the next cell.
 ALLOT	( n -- )	Reserve n cells of dictionary space.
 AND	( x1 x2 -- x3 )	Bitwise and.
+ANTICLOCK@	( -- n )	The anti-clock: how many instructions the node has retired, one tick each (#189).
 AWAIT	( node -- how )	Wait for the node's word on how its text ended: 0 QUIT, 1 completed, otherwise an error.
 BASE	( -- addr )	Variable: the number base for conversion in and out.
 BEGIN	( -- )	Compile-only: mark the start of a loop (UNTIL, WHILE ... REPEAT, AGAIN).
@@ -170,6 +171,7 @@ FLUSH	( -- )	Write every changed block (SAVE-BUFFERS).
 FORGET	( -- )	FORGET xxx: remove xxx and every word defined after it, never below FENCE.
 FORTH	( -- )	Make FORTH, the primary vocabulary, the CONTEXT vocabulary.
 GONE	( n node -- )	Tell the node that node n is gone; it acts on that only if this node is its centre.
+HEAT-OP@	( op -- n )	How many times opcode op (taken mod 32) has retired: its heat counter, HEAT-OP[op] (#189).
 HERE	( -- addr )	The address of the next free dictionary cell.
 HEX	( -- )	Set BASE to sixteen.
 HIDDEN	( -- )	Hide the newest entry: it cannot be found until revealed.