feat(bokeh): implement area-basic (#1396)

## Implementation: `area-basic` - bokeh

Implements the **bokeh** version of `area-basic`.

**File:** `plots/area-basic/implementations/bokeh.py`

---
:robot: *[impl-generate
workflow](https://github.com/MarkusNeusinger/pyplots/actions/runs/20447970023)*

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

plots/area-basic/implementations/bokeh.py

@@ -1,7 +1,7 @@
 """ pyplots.ai
 area-basic: Basic Area Chart
 Library: bokeh 3.8.1 | Python 3.13.11
-Quality: 100/100 | Created: 2025-12-14
+Quality: 92/100 | Created: 2025-12-23
 """
 
 import numpy as np

plots/area-basic/metadata/bokeh.yaml

@@ -1,17 +1,25 @@
 library: bokeh
 specification_id: area-basic
-created: 2025-12-14 09:26:11+00:00
-updated: 2025-12-14 09:26:11+00:00
+created: '2025-12-23T00:48:55Z'
+updated: '2025-12-23T01:22:02Z'
 generated_by: claude-opus-4-5-20251101
-workflow_run: 20205862589
-issue: 711
+workflow_run: 20447970023
+issue: 0
 python_version: 3.13.11
 library_version: 3.8.1
 preview_url: https://storage.googleapis.com/pyplots-images/plots/area-basic/bokeh/plot.png
 preview_thumb: https://storage.googleapis.com/pyplots-images/plots/area-basic/bokeh/plot_thumb.png
 preview_html: https://storage.googleapis.com/pyplots-images/plots/area-basic/bokeh/plot.html
-quality_score: 100
+quality_score: 92
 review:
-  strengths: []
-  weaknesses: []
-  improvements: []
+  strengths:
+  - Excellent text sizing scaled appropriately for 4800x2700 canvas
+  - Clean KISS code structure with proper seed for reproducibility
+  - Realistic website traffic data with believable weekly patterns and upward trend
+  - Proper use of Bokeh varea() for area fill with line overlay for definition
+  - Semi-transparent fill (0.4) matches spec recommendation (0.3-0.5)
+  - Y-axis correctly starts at 0 for honest area representation
+  weaknesses:
+  - Missing HoverTool for interactivity - Bokeh key strength is interactive exploration
+  - Axis labels lack units (could be Daily Visitors count or similar)
+  - Large empty space below data since values range 4000-7000 but y starts at 0