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_iesire.svg

@@ -2,11 +2,11 @@
   <text x="24" y="48" fill="#333" style="font-weight:bold">A — prima treime la țintă, a doua pe trailing stop</text>
   <rect x="146.5" y="176.0" width="73.0" height="96.0" fill="#188a3e" fill-opacity="0.08" stroke="#188a3e" stroke-width="1"/>
   <rect x="218.5" y="122.0" width="163.0" height="84.0" fill="#1a5fb4" fill-opacity="0.08" stroke="#1a5fb4" stroke-width="1"/>
-  <line x1="24" y1="190.0" x2="746" y2="190.0" stroke="#188a3e" stroke-width="1.5" stroke-dasharray="2 3"/>
+  <line x1="24.0" y1="190.0" x2="746" y2="190.0" stroke="#188a3e" stroke-width="1.5" stroke-dasharray="2 3"/>
   <text x="732" y="184.0" fill="#188a3e" text-anchor="end">ținta 1: 51.60 (= 1R)</text>
-  <line x1="24" y1="238.0" x2="746" y2="238.0" stroke="#555" stroke-width="1.5" stroke-dasharray="4 3"/>
+  <line x1="24.0" y1="238.0" x2="746" y2="238.0" stroke="#555" stroke-width="1.5" stroke-dasharray="4 3"/>
   <text x="732" y="232.0" fill="#555" text-anchor="end">intrarea: 50.40</text>
-  <line x1="24" y1="286.0" x2="746" y2="286.0" stroke="#c00" stroke-width="1.5" stroke-dasharray="4 3"/>
+  <line x1="24.0" y1="286.0" x2="746" y2="286.0" stroke="#c00" stroke-width="1.5" stroke-dasharray="4 3"/>
   <text x="732" y="280.0" fill="#c00" text-anchor="end">stopul: 49.20</text>
   <line x1="48.0" y1="56.0" x2="48.0" y2="126.0" stroke="#1a1a1a" stroke-width="1.2"/>
   <rect x="43.5" y="66.0" width="9" height="48.0" fill="#c00"/>
@@ -70,11 +70,11 @@
   <line x1="24" y1="405" x2="746" y2="405" stroke="#ddd"/>
   <text x="24" y="460" fill="#333" style="font-weight:bold">B — limita de 8 candele: nici ținta, nici stopul</text>
   <rect x="164.5" y="602.0" width="145.0" height="96.0" fill="#555" fill-opacity="0.08" stroke="#555" stroke-width="1"/>
-  <line x1="24" y1="602.0" x2="746" y2="602.0" stroke="#188a3e" stroke-width="1.5" stroke-dasharray="2 3"/>
+  <line x1="24.0" y1="602.0" x2="746" y2="602.0" stroke="#188a3e" stroke-width="1.5" stroke-dasharray="2 3"/>
   <text x="732" y="596.0" fill="#188a3e" text-anchor="end">ținta 1: 51.60 — neatinsă</text>
-  <line x1="24" y1="650.0" x2="746" y2="650.0" stroke="#555" stroke-width="1.5" stroke-dasharray="4 3"/>
+  <line x1="24.0" y1="650.0" x2="746" y2="650.0" stroke="#555" stroke-width="1.5" stroke-dasharray="4 3"/>
   <text x="732" y="644.0" fill="#555" text-anchor="end">intrarea: 50.40</text>
-  <line x1="24" y1="698.0" x2="746" y2="698.0" stroke="#c00" stroke-width="1.5" stroke-dasharray="4 3"/>
+  <line x1="24.0" y1="698.0" x2="746" y2="698.0" stroke="#c00" stroke-width="1.5" stroke-dasharray="4 3"/>
   <text x="732" y="692.0" fill="#c00" text-anchor="end">stopul: 49.20 — neatins</text>
   <line x1="48.0" y1="468.0" x2="48.0" y2="538.0" stroke="#1a1a1a" stroke-width="1.2"/>
   <rect x="43.5" y="478.0" width="9" height="48.0" fill="#c00"/>