R-130: the local-lvm minimum is named as what it does — a recommendation that warns

HARD_MIN_LVM_GIB -> RECOMMENDED_MIN_LVM_GIB; the warning says the install continues and to proceed
only with deliberately sized grows (the day0-install runbook's wording). Behaviour unchanged.
scripts/test_hostinstall.py: test_lvm_minimum_is_named_as_what_it_does.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

scripts/felhom-host-install.sh

@@ -345,7 +345,11 @@ PVE_SCRATCH_VMID_MAX=990009
 STATE_DIR="${FELHOM_INSTALL_STATE_DIR:-/var/lib/felhom-install}"
 STATE_FILE="${STATE_DIR}/state.json"
 AGENT_CONFIG=""        # resolved in preflight
-HARD_MIN_LVM_GIB=120   # a useful appliance won't fit below this on local-lvm
+# R-130: a RECOMMENDATION, not a floor — the install proceeds below it (runbooks/day0-install.md:
+# "proceed only if you sized the grows deliberately"; a 75 GiB box installed fully, 2026-07-03). The
+# old name called it a hard floor while the check only warned. No measured floor exists. Pinned by
+# scripts/test_hostinstall.py (test_lvm_minimum_is_named_as_what_it_does).
+RECOMMENDED_MIN_LVM_GIB=120
 
 # Runtime carriers (never logged)
 PASSPHRASE=""
@@ -1877,7 +1881,7 @@ step_preflight() {
     free_gib=$(lvs --noheadings --units g -o lv_size,data_percent /dev/pve/data 2>/dev/null | awk '{gsub(/[^0-9.]/,"",$1); used=$2; print int($1*(100-used)/100)}' 2>/dev/null || echo 0)
     if [[ "${free_gib:-0}" -gt 0 ]]; then
         log_info "  local-lvm free: ~${free_gib} GiB"
-        [[ "$free_gib" -ge "$HARD_MIN_LVM_GIB" ]] || log_warn "local-lvm free ~${free_gib} GiB < hard min ${HARD_MIN_LVM_GIB} GiB"
+        [[ "$free_gib" -ge "$RECOMMENDED_MIN_LVM_GIB" ]] || log_warn "local-lvm free ~${free_gib} GiB is below the recommended ${RECOMMENDED_MIN_LVM_GIB} GiB — the install continues; proceed only if you sized the grows deliberately"
     else
         log_warn "  could not read local-lvm free space (continuing)"
     fi

scripts/test_hostinstall.py

@@ -11,7 +11,7 @@ functions act on are variables the test points into the temp directory. Nothing
 Where behaviour cannot be isolated, a STATIC test checks the wiring (the function is CALLED, from the
 right place) — a helper defined and never called is the seam-built-never-wired shape.
 
-Rows: R-275, R-276, R-881 (uninstall residue); R-306 (--preflight-only writes no state).
+Rows: R-275, R-276, R-881 (uninstall residue); R-306 (--preflight-only writes no state); R-130 (lvm minimum wording).
 Run: python3 scripts/test_hostinstall.py
 """
 import os
@@ -372,6 +372,15 @@ def test_state_json_has_no_other_writer():
     assert "_state_put dnsmasq_preexisting" in body, "the ownership record no longer goes through _state_put"
 
 
+# ── R-130: the local-lvm minimum says what it does (it warns; the install continues) ────────────
+def test_lvm_minimum_is_named_as_what_it_does():
+    assert not re.search(r"HARD_MIN_LVM|hard min", SRC), "a 'hard min' that only warns is back"
+    body = func("step_preflight")
+    m = re.search(r'^.*RECOMMENDED_MIN_LVM_GIB.*$', body, re.M)
+    assert m and "log_warn" in m.group(0) and "die" not in m.group(0), "the lvm check is not a warning: %s" % (m and m.group(0))
+    assert "recommended" in m.group(0) and "continues" in m.group(0), m.group(0)
+
+
 def main():
     tests = [(n, f) for n, f in sorted(globals().items()) if n.startswith("test_") and callable(f)]
     fails = 0