Cache uaparse fully; drop the bot field and is_bot

scripts/speedplot.py

@@ -0,0 +1,67 @@
+# /// script
+# requires-python = ">=3.14"
+# dependencies = ["matplotlib"]
+# ///
+"""Bar chart of cold-parse throughput for the README's Performance section.
+
+Numbers are pasted from `uv run scripts/bench.py` (the cold 50/50
+browser/crawler mix, µs per parse) and shown as parses per second.
+Transparent SVG, text baked to paths, neutral grays: renders the same
+on light and dark themes.  All labels sit on the bars themselves.
+Very wide aspect ratio: forges render images at full content width,
+so height alone controls how tall it appears.
+
+    uv run scripts/speedplot.py
+"""
+
+from pathlib import Path
+
+import matplotlib
+
+matplotlib.use("Agg")
+matplotlib.rcParams["svg.fonttype"] = "path"  # text as paths: renders anywhere
+import matplotlib.pyplot as plt  # noqa: E402
+
+# µs per cold parse, from scripts/bench.py.
+US = {
+    "user-agent-parser": 8.2,
+    "uarite": 17.7,
+    "ua-parser (Rust)": 46.6,
+    "ua-parser (RE2)": 77.1,
+    "ua-parser (pure)": 321.5,
+    "user-agents": 334.4,
+}
+
+#: Readable on both white and dark backgrounds.
+OUTSIDE = "#767676"
+
+data = sorted(((n, 1e6 / us) for n, us in US.items()), key=lambda t: -t[1])
+names = [n for n, _ in data][::-1]
+values = [v for _, v in data][::-1]
+colors = ["#6e6e6e"] * len(data)
+colors[names.index("uarite")] = "#2b6cb0"
+
+fig, ax = plt.subplots(figsize=(12, 1.7), dpi=100)
+bars = ax.barh(names, values, color=colors, height=0.62)
+ax.set_xlim(0, max(values))
+ax.axis("off")
+
+for bar, name, v in zip(bars, names, values):
+    # Round to three significant digits: 121951 -> "122 000".
+    rounded = round(v, 2 - int(f"{v:.0e}".split("e")[1]))
+    label = f"{name}  {rounded:,.0f}".replace(",", " ")
+    y = bar.get_y() + bar.get_height() / 2
+    if bar.get_width() > max(values) * 0.28:
+        # Long bar: white text inside, right-aligned at the bar end.
+        ax.text(bar.get_width() - max(values) * 0.012, y, label,
+                va="center", ha="right", color="white", fontsize=11)
+    else:
+        # Short bar: theme-neutral gray text just past the bar end.
+        ax.text(bar.get_width() + max(values) * 0.012, y, label,
+                va="center", color=OUTSIDE, fontsize=11)
+
+fig.tight_layout(pad=0.2)
+out = Path("docs/bench-speed.svg")
+out.parent.mkdir(exist_ok=True)
+fig.savefig(out, transparent=True)
+print("wrote", out)