feat(bokeh): implement venn-labeled-items (#5376)

## Implementation: `venn-labeled-items` - python/bokeh

Implements the **python/bokeh** version of `venn-labeled-items`.

**File:** `plots/venn-labeled-items/implementations/python/bokeh.py`

**Parent Issue:** #5364

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:robot: *[impl-generate
workflow](https://github.com/MarkusNeusinger/anyplot/actions/runs/24923336606)*

---------

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

Author: github-actions[bot]

plots/venn-labeled-items/implementations/python/bokeh.py

@@ -0,0 +1,158 @@
+""" anyplot.ai
+venn-labeled-items: Chartgeist-Style Venn Diagram with Labeled Items
+Library: bokeh 3.9.0 | Python 3.14.4
+Quality: 86/100 | Created: 2026-04-25
+"""
+
+import os
+
+import numpy as np
+from bokeh.io import export_png, output_file, save
+from bokeh.models import Label
+from bokeh.plotting import figure
+
+
+# Theme tokens
+THEME = os.getenv("ANYPLOT_THEME", "light")
+PAGE_BG = "#FAF8F1" if THEME == "light" else "#1A1A17"
+INK = "#1A1A17" if THEME == "light" else "#F0EFE8"
+INK_SOFT = "#4A4A44" if THEME == "light" else "#B8B7B0"
+
+# Okabe-Ito palette — first circle is brand green, then vermillion, then blue
+COLOR_A = "#009E73"  # Overhyped
+COLOR_B = "#D55E00"  # Actually Useful
+COLOR_C = "#0072B2"  # Secretly Loved
+
+# Geometry — equilateral triangle of centers (apex pointing down)
+r = 1.0
+s = 1.1
+h_low = s * np.sqrt(3) / 6
+center_a = (-s / 2, h_low)
+center_b = (s / 2, h_low)
+center_c = (0.0, -2 * h_low)
+
+# Data — circle categories with editorial labels positioned outside each circle
+circles = [
+    {"name": "Overhyped", "color": COLOR_A, "center": center_a, "label_xy": (-1.65, 1.45), "align": "right"},
+    {"name": "Actually Useful", "color": COLOR_B, "center": center_b, "label_xy": (1.65, 1.45), "align": "left"},
+    {"name": "Secretly Loved", "color": COLOR_C, "center": center_c, "label_xy": (0.0, -1.92), "align": "center"},
+]
+
+# Items distributed across the seven interior zones
+items = [
+    # A only — Overhyped, neither useful nor loved
+    {"label": "NFTs", "x": -1.42, "y": 0.88},
+    {"label": "Metaverse", "x": -1.50, "y": 0.32},
+    {"label": "Web3", "x": -1.30, "y": -0.05},
+    # B only — Useful, neither overhyped nor loved
+    {"label": "Google Maps", "x": 1.42, "y": 0.88},
+    {"label": "Sticky Notes", "x": 1.40, "y": 0.30},
+    # C only — Loved, neither overhyped nor useful
+    {"label": "Karaoke", "x": -0.45, "y": -1.30},
+    {"label": "Postcards", "x": 0.45, "y": -1.30},
+    # AB — Overhyped + Useful
+    {"label": "Smartphones", "x": 0.00, "y": 0.92},
+    {"label": "Email", "x": 0.00, "y": 0.62},
+    # AC — Overhyped + Loved
+    {"label": "Crocs", "x": -0.78, "y": -0.18},
+    {"label": "Pumpkin Spice", "x": -0.55, "y": -0.50},
+    # BC — Useful + Loved
+    {"label": "Spotify", "x": 0.78, "y": -0.18},
+    {"label": "Dolly Parton", "x": 0.55, "y": -0.50},
+    # ABC — all three
+    {"label": "Sourdough", "x": 0.00, "y": 0.10},
+    {"label": "TikTok", "x": 0.00, "y": -0.20},
+]
+
+# Plot — square canvas suits the radial Venn layout
+p = figure(
+    width=3600,
+    height=3600,
+    title="Tech Vibes 2026 · venn-labeled-items · bokeh · anyplot.ai",
+    x_range=(-2.7, 2.7),
+    y_range=(-2.7, 2.7),
+    toolbar_location=None,
+    tools="",
+    match_aspect=True,
+)
+
+# Three semi-transparent circles
+for circle in circles:
+    cx, cy = circle["center"]
+    p.ellipse(
+        x=cx,
+        y=cy,
+        width=2 * r,
+        height=2 * r,
+        fill_color=circle["color"],
+        fill_alpha=0.22,
+        line_color=circle["color"],
+        line_width=4,
+        line_alpha=0.85,
+    )
+
+# Category names outside each circle, in the circle's own color
+for circle in circles:
+    lx, ly = circle["label_xy"]
+    p.add_layout(
+        Label(
+            x=lx,
+            y=ly,
+            text=circle["name"],
+            text_font="serif",
+            text_font_size="64pt",
+            text_font_style="italic",
+            text_color=circle["color"],
+            text_align=circle["align"],
+            text_baseline="middle",
+        )
+    )
+
+# Items as text-only placements inside their assigned zones
+for item in items:
+    p.add_layout(
+        Label(
+            x=item["x"],
+            y=item["y"],
+            text=item["label"],
+            text_font="serif",
+            text_font_size="38pt",
+            text_color=INK,
+            text_align="center",
+            text_baseline="middle",
+        )
+    )
+
+# Editorial subtitle anchored under the diagram
+p.add_layout(
+    Label(
+        x=0.0,
+        y=-2.35,
+        text="A field guide to fifteen things, three feelings, and seven overlapping truths",
+        text_font="serif",
+        text_font_size="30pt",
+        text_font_style="italic",
+        text_color=INK_SOFT,
+        text_align="center",
+        text_baseline="middle",
+    )
+)
+
+# Style — gridless editorial chrome
+p.background_fill_color = PAGE_BG
+p.border_fill_color = PAGE_BG
+p.outline_line_color = None
+
+p.title.text_font = "serif"
+p.title.text_font_size = "54pt"
+p.title.text_font_style = "normal"
+p.title.text_color = INK
+p.title.align = "center"
+
+p.axis.visible = False
+p.grid.visible = False
+
+# Save
+export_png(p, filename=f"plot-{THEME}.png")
+output_file(f"plot-{THEME}.html")
+save(p)