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/buy_doji_aplus.svg

@@ -1,8 +1,8 @@
 <svg viewBox="0 0 1160 519" width="1160" height="519" xmlns="http://www.w3.org/2000/svg" style="width:100%;height:auto;font:12px sans-serif"><text x="580" y="20" fill="#333" text-anchor="middle" style="font-weight:bold">Setup A+ vs. setup mediocru (două panouri, exemple construite)</text><g transform="translate(8,38)">
   <text x="24" y="48" fill="#333" style="font-weight:bold">A+ — doji la suport, volum în acumulare</text>
   <rect x="184.5" y="256.2" width="19.0" height="33.0" fill="#188a3e" fill-opacity="0.08" stroke="#188a3e" stroke-width="1"/>
-  <line x1="24" y1="282.6" x2="546" y2="282.6" stroke="#188a3e" stroke-width="1.5" stroke-dasharray="4 3"/>
-  <text x="30" y="276.6" fill="#188a3e">suport 42.00</text>
+  <line x1="24.0" y1="282.6" x2="546" y2="282.6" stroke="#188a3e" stroke-width="1.5" stroke-dasharray="4 3"/>
+  <text x="30.0" y="276.6" fill="#188a3e">suport 42.00</text>
   <line x1="44.0" y1="56.0" x2="44.0" y2="78.0" stroke="#1a1a1a" stroke-width="1.2"/>
   <rect x="39.5" y="62.6" width="9" height="8.8" fill="#c00"/>
   <line x1="59.0" y1="64.8" x2="59.0" y2="95.6" stroke="#1a1a1a" stroke-width="1.2"/>
@@ -88,7 +88,7 @@
 <text x="200.5" y="451.7" fill="#188a3e" style="font-weight:bold">volum în creștere = acumulare</text></g><g transform="translate(592,38)">
   <text x="24" y="48" fill="#333" style="font-weight:bold">Mediocru — gap-up în rezistență, volum varză</text>
   <rect x="229.5" y="56.0" width="49.0" height="86.5" fill="#c00" fill-opacity="0.08" stroke="#c00" stroke-width="1"/>
-  <line x1="24" y1="80.6" x2="546" y2="80.6" stroke="#c00" stroke-width="1.5" stroke-dasharray="4 3"/>
+  <line x1="24.0" y1="80.6" x2="546" y2="80.6" stroke="#c00" stroke-width="1.5" stroke-dasharray="4 3"/>
   <text x="532" y="74.6" fill="#c00" text-anchor="end">rezistență 78.50</text>
   <line x1="44.0" y1="252.2" x2="44.0" y2="272.0" stroke="#1a1a1a" stroke-width="1.2"/>
   <rect x="39.5" y="256.6" width="9" height="11.0" fill="#188a3e"/>