svg_candles: cautarea nivelurilor, scoasa in functie comuna; 11 generatoare reparate

Unsprezece generatoare nu mai rulau deloc la HEAD: cautau <line x1="24", iar
svg_candles scrie x1="24.0" de cand are Level.i0. Un generator mort inseamna
ca diagrama nu mai poate fi regenerata, si nimeni n-ar fi aflat pana cand ar
fi incercat cineva, peste luni.

Cele 11 copii ale aceluiasi regex au disparut: y_niveluri() si offset_render()
se agata acum de semnatura liniei de Level (stroke-width + dasharray), nu de
x-ul ei. Caz nou in selftest, cu Level(i0=) si panou de volum - combinatia la
care varianta veche fie crapa, fie prindea tacut linia de zero a volumului.

41 de SVG-uri regenerate, toate identice cu cele comise dupa normalizarea
x1=24 -> x1=24.0, deci niciun desen n-a sarit. Verificarea asta a prins o
regresie reala: la buy_doji_transe substitutia lasase scaderea veche pe randul
urmator, offsetul se scadea de doua ori si desenul urca 92 px.

Inca doua generatoare moarte din aceeasi familie, gasite pe drum
(intrarea_cazul_lui, intrarea_doua_variante): desenau peste grafic citind
ch._y() fara offset. Nu crapau zgomotos - produceau suprapuneri la 22 px.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ThN7ixZrowca8aTGrK1MUJ

gen/strategii/atmi_corectie.svg

@@ -1,11 +1,11 @@
 <svg viewBox="0 0 680 557" xmlns="http://www.w3.org/2000/svg" style="width:100%;height:auto;font:12px sans-serif">
   <rect x="24" y="233.5" width="642" height="12.6" fill="#7b2fbf" opacity="0.12"/>
   <text x="24" y="48" fill="#333" style="font-weight:bold">SPY — daily: aceeași corecție, 4.0 % (DA) vs. 3.9 % (NU)</text>
-  <line x1="24" y1="173.6" x2="666" y2="173.6" stroke="#333" stroke-width="1.5" stroke-dasharray="4 3"/>
+  <line x1="24.0" y1="173.6" x2="666" y2="173.6" stroke="#333" stroke-width="1.5" stroke-dasharray="4 3"/>
   <text x="652" y="167.6" fill="#333" text-anchor="end">100.00 — swing high</text>
-  <line x1="24" y1="257.6" x2="666" y2="257.6" stroke="#188a3e" stroke-width="1.5" stroke-dasharray="4 3"/>
+  <line x1="24.0" y1="257.6" x2="666" y2="257.6" stroke="#188a3e" stroke-width="1.5" stroke-dasharray="4 3"/>
   <text x="652" y="251.6" fill="#188a3e" text-anchor="end">96.00 = 4.0 % — DA, intri</text>
-  <line x1="24" y1="56.0" x2="666" y2="56.0" stroke="#1a5fb4" stroke-width="1.5" stroke-dasharray="4 3"/>
+  <line x1="24.0" y1="56.0" x2="666" y2="56.0" stroke="#1a5fb4" stroke-width="1.5" stroke-dasharray="4 3"/>
   <text x="652" y="50.0" fill="#1a5fb4" text-anchor="end">TP +10 % = 105.60</text>
   <line x1="44.0" y1="378.3" x2="44.0" y2="402.5" stroke="#1a1a1a" stroke-width="1.2"/>
   <rect x="39.5" y="383.6" width="9" height="12.6" fill="#188a3e"/>