feat(plotly): implement rose-basic (#5594)

## Implementation: `rose-basic` - python/plotly

Implements the **python/plotly** version of `rose-basic`.

**File:** `plots/rose-basic/implementations/python/plotly.py`

**Parent Issue:** #1003

---
:robot: *[impl-generate
workflow](https://github.com/MarkusNeusinger/anyplot/actions/runs/25151743773)*

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

plots/rose-basic/implementations/python/plotly.py

@@ -1,64 +1,75 @@
-""" pyplots.ai
+""" anyplot.ai
 rose-basic: Basic Rose Chart
-Library: plotly 6.5.0 | Python 3.13.11
-Quality: 91/100 | Created: 2025-12-23
+Library: plotly 6.7.0 | Python 3.13.13
+Quality: 90/100 | Updated: 2026-04-30
 """
 
+import os
+
 import plotly.graph_objects as go
 
 
-# Data - Monthly rainfall (mm) showing seasonal pattern
+# Theme tokens
+THEME = os.getenv("ANYPLOT_THEME", "light")
+PAGE_BG = "#FAF8F1" if THEME == "light" else "#1A1A17"
+ELEVATED_BG = "#FFFDF6" if THEME == "light" else "#242420"
+INK = "#1A1A17" if THEME == "light" else "#F0EFE8"
+INK_SOFT = "#4A4A44" if THEME == "light" else "#B8B7B0"
+GRID = "rgba(26,26,23,0.10)" if THEME == "light" else "rgba(240,239,232,0.10)"
+
+# Data - Monthly rainfall (mm) showing pronounced seasonal pattern
 months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
-rainfall = [78, 62, 55, 48, 42, 38, 35, 40, 52, 68, 82, 85]
+rainfall = [92, 74, 60, 45, 32, 18, 12, 22, 48, 75, 98, 105]
 
-# Create the rose chart using barpolar
-# Using month names directly as theta (categorical) for proper label placement
+# Plot
 fig = go.Figure()
 
 fig.add_trace(
     go.Barpolar(
         r=rainfall,
         theta=months,
-        width=0.9,  # Slight gap between bars for visual clarity
+        width=0.9,
         marker={
             "color": rainfall,
-            "colorscale": [[0, "#FFD43B"], [1, "#306998"]],  # Python Yellow to Blue
-            "line": {"color": "white", "width": 2},
-            "cmin": min(rainfall),
+            "colorscale": "viridis",
+            "line": {"color": PAGE_BG, "width": 2},
+            "cmin": 0,
             "cmax": max(rainfall),
         },
         hovertemplate="<b>%{theta}</b><br>Rainfall: %{r} mm<extra></extra>",
     )
 )
 
-# Update layout for 4800x2700 px output
 fig.update_layout(
-    title={"text": "rose-basic · plotly · pyplots.ai", "font": {"size": 48}, "x": 0.5, "xanchor": "center"},
-    template="plotly_white",
+    title={
+        "text": "rose-basic · plotly · anyplot.ai",
+        "font": {"size": 48, "color": INK},
+        "x": 0.5,
+        "xanchor": "center",
+    },
+    paper_bgcolor=PAGE_BG,
     polar={
+        "bgcolor": PAGE_BG,
         "angularaxis": {
-            "tickfont": {"size": 28},
+            "tickfont": {"size": 28, "color": INK_SOFT},
             "direction": "clockwise",
-            "rotation": 90,  # Start at top (12 o'clock)
-            "gridcolor": "rgba(0,0,0,0.1)",
-            "linecolor": "rgba(0,0,0,0.3)",
+            "rotation": 90,
+            "gridcolor": GRID,
+            "linecolor": INK_SOFT,
         },
         "radialaxis": {
-            "tickfont": {"size": 22},
-            "gridcolor": "rgba(0,0,0,0.15)",
-            "linecolor": "rgba(0,0,0,0.3)",
+            "tickfont": {"size": 22, "color": INK_SOFT},
+            "gridcolor": GRID,
+            "linecolor": INK_SOFT,
             "ticksuffix": " mm",
             "angle": 45,
-            "dtick": 20,
+            "dtick": 25,
         },
-        "bgcolor": "white",
     },
     showlegend=False,
     margin={"l": 100, "r": 100, "t": 150, "b": 100},
 )
 
-# Save as PNG (4800 x 2700 px)
-fig.write_image("plot.png", width=1600, height=900, scale=3)
-
-# Save interactive HTML version
-fig.write_html("plot.html", include_plotlyjs="cdn")
+# Save
+fig.write_image(f"plot-{THEME}.png", width=1600, height=900, scale=3)
+fig.write_html(f"plot-{THEME}.html", include_plotlyjs="cdn")