tests/docs: unique-name driver loading; moving-path lifecycle and settings notes; VIV predeclare renamed

Tests load research drivers via importlib under unique module names
instead of a bare 'import run' (shared-process collision between the
Dütsch and VIV drivers). lifecycle.md qualifies immutable geometry and the
host-only get_flags for translating circles; supported_settings.md points to
the dense-only moving-circle feature; leontini_viv_predeclare.md is renamed
viv_re150_predeclare.md (Re 150 Kolahdouz/Qin case) with references updated.

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

docs/validation/moving_bodies_stage1.md

@@ -29,8 +29,8 @@ and the Mac evidence directory (not in git).
 
 ## Free transverse VIV (Kolahdouz §4.1.1 setup, Qin §4.5 target)
 
-- Predeclaration: `docs/validation/leontini_viv_predeclare.md` (agreed at
-  `1abfe954`); run at `fb507aa1`, single case, D = 40, 75 D × 60 D.
+- Predeclaration: `docs/validation/viv_re150_predeclare.md` (agreed at
+  `1abfe954` under its former name `leontini_viv_predeclare.md`); run at `fb507aa1`, single case, D = 40, 75 D × 60 D.
 - Result: status `scored`, 336,384 steps (t U/D = 336.4); A_max = .5464 D vs
   .520 D (+5.1 %, inside the declared ±10 % band); mean half peak-to-peak
   .5448 D; f/f_n = .955; block drifts .78/.29/.18 %, last-five spreads

docs/validation/viv_re150_predeclare.md

@@ -1,4 +1,6 @@
-# Single-cylinder free transverse VIV — PREDECLARATION (agreed at 1abfe954)
+# Single-cylinder free transverse VIV, Re 150 (Kolahdouz/Qin) — PREDECLARATION (agreed at 1abfe954)
+
+(File renamed from `leontini_viv_predeclare.md`; the Leontini Re 200 case is only the queued second case below.)
 
 Stage goal (Yanqi via TRON): prescribed Dütsch case + one VIV case both
 "reasonably close" to a predeclared reference = development-stage success, then