fix(cli): _codes_for's slow-SQL warning is elements-only, not lineage --all-payable (refs #691 #692)

Minor from the final fix wave: _codes_for's "~20 min of SQL before any
model call" warning describes elements' per-code LLM classification
pass. lineage --all-payable also calls _codes_for but its own
--all-payable path (lineage_all) is one inverted pass over
fr_anchors — seconds, not minutes — so the warning there was
misleading. New warn_slow keyword (default True, elements' two call
sites unchanged; lineage --all-payable passes warn_slow=False).

src/cli/pfs.py

@@ -117,8 +117,17 @@ def _run_elements(
 
 
 def _codes_for(
-    con: Any, codes: list[str], families: list[str], all_payable: bool
+    con: Any,
+    codes: list[str],
+    families: list[str],
+    all_payable: bool,
+    *,
+    warn_slow: bool = True,
 ) -> list[str]:
+    """*warn_slow*: the "~20 min of SQL before any model call" warning
+    describes ``elements``' per-code LLM classification pass — it does
+    NOT apply to ``lineage --all-payable`` (one inverted pass over
+    ``fr_anchors``, seconds not minutes), which passes ``warn_slow=False``."""
     out: list[str] = [c.upper() for c in codes]
     if families:
         refresh_from(con)
@@ -137,11 +146,12 @@ def _codes_for(
             "SELECT DISTINCT hcpcs FROM pfs.rvu WHERE status_code IN ('A','R','T') "
             "AND year = (SELECT max(year) FROM pfs.rvu) ORDER BY hcpcs"
         ).fetchall()
-        log.warning(
-            "--all-payable is experimental: targeting %d codes (~20 min of SQL "
-            "before any model call)",
-            len(rows),
-        )
+        if warn_slow:
+            log.warning(
+                "--all-payable is experimental: targeting %d codes (~20 min of SQL "
+                "before any model call)",
+                len(rows),
+            )
         out.extend(r[0] for r in rows)
     if not out:
         raise typer.BadParameter("pass --code, --family or --all-payable")
@@ -256,7 +266,7 @@ def lineage_cmd(
         # calls write_events and publishes.
         con = _read()
         try:
-            targets = _codes_for(con, [], [], True)
+            targets = _codes_for(con, [], [], True, warn_slow=False)
             if limit:
                 targets = targets[:limit]
             by_code = lineage_all(con, store, targets)

tests/cli/test_pfs_cli.py

@@ -202,6 +202,20 @@ class TestElements:
         assert set(seen) == expected
 
 
+class TestCodesForWarnSlow:
+    """``_codes_for``'s "~20 min of SQL" warning describes the
+    per-code LLM classification pass ``elements`` runs — it does not
+    apply to ``lineage --all-payable`` (one inverted pass, seconds)."""
+
+    def test_warns_by_default(self, con, caplog):
+        pfs_cli._codes_for(con, [], [], True)
+        assert "20 min" in caplog.text
+
+    def test_silent_when_warn_slow_is_false(self, con, caplog):
+        pfs_cli._codes_for(con, [], [], True, warn_slow=False)
+        assert "20 min" not in caplog.text
+
+
 class TestLineage:
     def test_prints_and_writes(self, con, monkeypatch):
         ev = EventRow(