Stage K-7: hosted Makefile stops copying the binary into lfs/ (FABRIC-3.10.8 §4.6)

- The all target copied the hosted binary to lfs/<arch>/starforth,
  rewriting a tracked file on every compile-sanity build (ruled: stop the
  copy). A forced relink now leaves lfs/ untouched. Hosted build only; no
  kernel change.

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

FABRIC-3.10.8.md

@@ -623,3 +623,9 @@ The counts are identical on all three ISAs (probe logs: amd64 `logs/20260926-054
 | riscv64 | `logs/20260926-063140` | same |
 
 The ledger line is unchanged. **K-5 closes §8 defect 10.**
+
+### 4.6 K-7 — the hosted build no longer copies into `lfs/` (2026-09-26)
+
+**Change** (ruled 2026-09-26). The hosted `Makefile`'s `all` target no longer copies the binary to `lfs/<arch>/starforth`. In this repo the hosted build is a compile-sanity check only, and the copy rewrote the tracked `lfs/amd64/starforth` on every build.
+
+**Evidence:** a forced hosted relink (`touch src/main.c; make`) builds, and `git status` shows no change under `lfs/`. There is no kernel change, so no QEMU acceptance (the hosted build isn't an acceptance target, CLAUDE.md).

Makefile

@@ -497,9 +497,9 @@ all: banner $(BINARY)
 	@echo "  Output directory: $(BUILD_DIR)"
 	@echo "  Optimizations: $(if $(findstring USE_ASM_OPT,$(CFLAGS)),Enabled,Disabled)"
 	@echo "  Direct Threading: $(if $(findstring USE_DIRECT_THREADING,$(CFLAGS)),Enabled,Disabled)"
-	@mkdir -p lfs/$(ARCH_DIR)
-	@cp $(BINARY) lfs/$(ARCH_DIR)/starforth
-	@echo "  LFS copy:  lfs/$(ARCH_DIR)/starforth"
+	@# FABRIC-3.10.8 K-7 (Captain Bob, 2026-09-26): no copy into lfs/ -- in
+	@# this repo the hosted build is a compile-sanity check only, and the copy
+	@# rewrote the tracked lfs/$(ARCH_DIR)/starforth on every build.
 	$(TARGET_POST)
 
 banner: