feat(matplotlib): implement wireframe-3d-basic (#1061)

## Implementation: `wireframe-3d-basic` - matplotlib

Implements the **matplotlib** version of `wireframe-3d-basic`.

**File:** `plots/wireframe-3d-basic/implementations/matplotlib.py`

**Parent Issue:** #1015

---
:robot: *[impl-generate
workflow](https://github.com/MarkusNeusinger/pyplots/actions/runs/20274573094)*

---------

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

Author: github-actions[bot]

plots/wireframe-3d-basic/implementations/matplotlib.py

@@ -0,0 +1,48 @@
+"""
+wireframe-3d-basic: Basic 3D Wireframe Plot
+Library: matplotlib
+"""
+
+import matplotlib.pyplot as plt
+import numpy as np
+
+
+# Data - create ripple function z = sin(sqrt(x^2 + y^2))
+np.random.seed(42)
+x = np.linspace(-6, 6, 40)
+y = np.linspace(-6, 6, 40)
+X, Y = np.meshgrid(x, y)
+R = np.sqrt(X**2 + Y**2)
+Z = np.sin(R)
+
+# Create 3D plot
+fig = plt.figure(figsize=(16, 9))
+ax = fig.add_subplot(111, projection="3d")
+
+# Plot wireframe with Python Blue color
+ax.plot_wireframe(X, Y, Z, color="#306998", linewidth=1.5, alpha=0.8)
+
+# Set viewing angle (elevation 30, azimuth 45 as per spec)
+ax.view_init(elev=30, azim=45)
+
+# Labels and styling
+ax.set_xlabel("X", fontsize=20, labelpad=15)
+ax.set_ylabel("Y", fontsize=20, labelpad=15)
+ax.set_zlabel("Z", fontsize=20, labelpad=15)
+ax.set_title("wireframe-3d-basic · matplotlib · pyplots.ai", fontsize=24, pad=20)
+
+# Tick parameters
+ax.tick_params(axis="both", labelsize=14)
+ax.tick_params(axis="z", labelsize=14)
+
+# Subtle grid
+ax.xaxis.pane.fill = False
+ax.yaxis.pane.fill = False
+ax.zaxis.pane.fill = False
+ax.xaxis.pane.set_edgecolor("gray")
+ax.yaxis.pane.set_edgecolor("gray")
+ax.zaxis.pane.set_edgecolor("gray")
+ax.grid(True, alpha=0.3, linestyle="--")
+
+plt.tight_layout()
+plt.savefig("plot.png", dpi=300, bbox_inches="tight")

plots/wireframe-3d-basic/metadata/matplotlib.yaml

@@ -0,0 +1,23 @@
+# Per-library metadata for matplotlib implementation of wireframe-3d-basic
+# Auto-generated by impl-generate.yml
+
+library: matplotlib
+specification_id: wireframe-3d-basic
+
+# Preview URLs (filled by workflow)
+preview_url: https://storage.googleapis.com/pyplots-images/plots/wireframe-3d-basic/matplotlib/plot.png
+preview_thumb: https://storage.googleapis.com/pyplots-images/plots/wireframe-3d-basic/matplotlib/plot_thumb.png
+preview_html: null
+
+current:
+  version: 0
+  generated_at: 2025-12-16T16:11:27Z
+  generated_by: claude-opus-4-5-20251101
+  workflow_run: 20274573094
+  issue: 1015
+  quality_score: 94
+  # Version info (filled by workflow)
+  python_version: "3.13.11"
+  library_version: "unknown"
+
+history: []