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_transe.svg

@@ -1,14 +1,14 @@
 <svg viewBox="0 0 1372 1031" xmlns="http://www.w3.org/2000/svg" style="width:100%;height:auto;font:12px sans-serif">
   <text x="24" y="48" fill="#333" style="font-weight:bold">Intrarea în trei tranșe — același trade (doji 50.10 / 49.25)</text>
   <rect x="218.3" y="572.0" width="20.0" height="120.0" fill="#188a3e" fill-opacity="0.08" stroke="#188a3e" stroke-width="1"/>
-  <line x1="24" y1="284.0" x2="1358" y2="284.0" stroke="#188a3e" stroke-width="1.5" stroke-dasharray="2 2"/>
+  <line x1="24.0" y1="284.0" x2="1358" y2="284.0" stroke="#188a3e" stroke-width="1.5" stroke-dasharray="2 2"/>
   <text x="1344" y="278.0" fill="#188a3e" text-anchor="end">ținta 1: 51.60 = 1R față de close</text>
-  <line x1="24" y1="351.2" x2="1358" y2="351.2" stroke="#1a5fb4" stroke-width="1.5" stroke-dasharray="2 2"/>
+  <line x1="24.0" y1="351.2" x2="1358" y2="351.2" stroke="#1a5fb4" stroke-width="1.5" stroke-dasharray="2 2"/>
   <text x="1344" y="345.2" fill="#1a5fb4" text-anchor="end">ținta 1: 51.32 = 1R față de prețul mediu 50.26</text>
-  <line x1="24" y1="572.0" x2="1358" y2="572.0" stroke="#188a3e" stroke-width="1.5" stroke-dasharray="4 3"/>
+  <line x1="24.0" y1="572.0" x2="1358" y2="572.0" stroke="#188a3e" stroke-width="1.5" stroke-dasharray="4 3"/>
   <text x="1344" y="566.0" fill="#188a3e" text-anchor="end">intrarea (close-ul de confirmare): 50.40</text>
-  <line x1="24" y1="860.0" x2="1358" y2="860.0" stroke="#c00" stroke-width="1.5" stroke-dasharray="4 3"/>
-  <text x="30" y="854.0" fill="#c00">stopul: 49.20</text>
+  <line x1="24.0" y1="860.0" x2="1358" y2="860.0" stroke="#c00" stroke-width="1.5" stroke-dasharray="4 3"/>
+  <text x="30.0" y="854.0" fill="#c00">stopul: 49.20</text>
   <line x1="108.3" y1="56.0" x2="108.3" y2="500.0" stroke="#1a1a1a" stroke-width="1.2"/>
   <rect x="103.3" y="116.0" width="10" height="312.0" fill="#c00"/>
   <line x1="138.3" y1="368.0" x2="138.3" y2="824.0" stroke="#1a1a1a" stroke-width="1.2"/>