feat(heatmap): add sorted bar chart view to sector HeatmapPanel (#2326)

* feat(heatmap): add sorted bar chart view to HeatmapPanel (#2246)

- Add FearGreedSectorPerformance message to proto + regenerate
- Expose sectorPerformance array in GetFearGreedIndexResponse RPC handler
- HeatmapPanel.renderHeatmap accepts optional sectorBars; renders
  sorted horizontal bar chart below existing tile grid
- Sectors ranked by day change (gainers first, losers last)
- Green/red bars proportional to |change| (max ~3% = 100% width)
- Reuses fearGreedIndex bootstrap data — zero extra network calls
- Add .heatmap-bar-chart CSS: 18px rows, 10px font, compact layout

* fix(heatmap): address code review P1 findings on PR #2326

- Server: guard change1d with Number.isFinite fallback so non-numeric
  Redis values (NaN) coerce to 0 instead of propagating through
- Client: filter out any NaN change1d entries before computing maxAbs;
  Math.max propagates NaN so a single bad entry makes all bars invisible
  (width:NaN%); also bail early if filtered list is empty

* fix(heatmap): address Greptile review comments on PR #2326

Use var(--green)/var(--red) for bar fill colour to match text label
CSS variables and avoid visual mismatch across themes.

docs/api/MarketService.openapi.yaml

@@ -1519,6 +1519,10 @@ components:
                 tltPrice:
                     type: number
                     format: double
+                sectorPerformance:
+                    type: array
+                    items:
+                        $ref: '#/components/schemas/FearGreedSectorPerformance'
         FearGreedCategory:
             type: object
             properties:
@@ -1535,6 +1539,16 @@ components:
                     type: boolean
                 inputsJson:
                     type: string
+        FearGreedSectorPerformance:
+            type: object
+            properties:
+                symbol:
+                    type: string
+                name:
+                    type: string
+                change1d:
+                    type: number
+                    format: double
         ListEarningsCalendarRequest:
             type: object
             properties: