natus wheel: unified PRV/NXT cycle merging planets & angles; drop degree from classic element contribs; tt-planet-sym larger; tt-sign-type italic — TDD

- _chartItems merges _planetItems + _angleItems sorted by degree desc;
  _stepCycle dispatches to _activatePlanet or _activateAngle via unified list
- T15g/h/i: angle↔planet boundary navigation & wrap; T9n/T9w updated for merged cycle
- classic element contrib rows: removed @ deg° (pdata/inDeg lookup dropped)
- .tt-planet-sym 1.2→1.8rem; .tt-house-of/.tt-house-type 0.6em→0.7rem;
  .tt-sign-type added alongside .tt-house-type selector, font-style: italic

Code architected by Disco DeDisco <discodedisco@outlook.com>
Git commit message Co-Authored-By:
Claude Sonnet 4.6 <noreply@anthropic.com>

src/static_src/scss/_natus.scss

@@ -535,7 +535,7 @@ body[class*="-light"] {
         margin-bottom: 0.2rem;
     }
     .tt-planet-sym {
-        font-size: 1.2rem;
+        font-size: 1.8rem;
         opacity: 0.85;
     }
     .tt-angle-sym {
@@ -608,7 +608,7 @@ body[class*="-light"] {
         margin-bottom: 0.3rem;
     }
     .tt-house-of {
-        font-size: 0.6em;
+        font-size: 0.7rem;
         font-weight: 700;
         margin-right: 0.15em;
         opacity: 0.9;
@@ -619,12 +619,14 @@ body[class*="-light"] {
         opacity: 1;
         flex-shrink: 0;
     }
-    .tt-house-type {
+    .tt-house-type,
+    .tt-sign-type {
         display: block;
-        font-size: 0.6em;
+        font-size: 0.7rem;
         font-weight: 400;
         opacity: 0.7;
         margin-top: 0.1em;
+        font-style: italic;
     }
     .tt-house-planets {
         display: flex;