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/hammer_mbt10_bh_stop.svg

@@ -2,10 +2,10 @@
   <text x="24" y="64" fill="#333" style="font-weight:bold">Buy hammer — stopul și mărimea poziției (daily, ticker ilustrativ XYZ)</text>
   <rect x="257.3" y="163.0" width="49.0" height="77.6" fill="#b06000" fill-opacity="0.08" stroke="#b06000" stroke-width="1"/>
   <text x="257.3" y="89.4" fill="#b06000" style="font-weight:bold">cele două bare care dau stopul</text>
-  <line x1="24" y1="177.6" x2="740" y2="177.6" stroke="#188a3e" stroke-width="1.5" stroke-dasharray="4 3"/>
-  <text x="30" y="171.6" fill="#188a3e">intrare 63.35 (close-ul confirmării)</text>
-  <line x1="24" y1="234.8" x2="740" y2="234.8" stroke="#c00" stroke-width="1.5" stroke-dasharray="4 3"/>
-  <text x="30" y="228.8" fill="#c00">SL 62.05</text>
+  <line x1="24.0" y1="177.6" x2="740" y2="177.6" stroke="#188a3e" stroke-width="1.5" stroke-dasharray="4 3"/>
+  <text x="30.0" y="171.6" fill="#188a3e">intrare 63.35 (close-ul confirmării)</text>
+  <line x1="24.0" y1="234.8" x2="740" y2="234.8" stroke="#c00" stroke-width="1.5" stroke-dasharray="4 3"/>
+  <text x="30.0" y="228.8" fill="#c00">SL 62.05</text>
   <line x1="138.8" y1="85.2" x2="138.8" y2="122.6" stroke="#1a1a1a" stroke-width="1.2"/>
   <rect x="132.3" y="96.2" width="13" height="13.2" fill="#188a3e"/>
   <line x1="164.8" y1="85.2" x2="164.8" y2="157.8" stroke="#1a1a1a" stroke-width="1.2"/>