From b5b144dcd0c4fa3a801ff808560e4527e0e2d7c7 Mon Sep 17 00:00:00 2001
From: GitHub Copilot <copilot@github.com>
Date: Sat, 24 Jan 2026 12:55:18 +0000
Subject: [PATCH] Initialize sparklines to start at zero

Bump version to 0.2.6
---
 pyproject.toml                      | 2 +-
 src/textual_webterm/docker_stats.py | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/pyproject.toml b/pyproject.toml
index 89c3437..aff947c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "textual-webterm"
-version = "0.2.5"
+version = "0.2.6"
 description = "Serve terminal sessions over the web"
 authors = ["Will McGugan <will@textualize.io>"]
 license = "MIT"
diff --git a/src/textual_webterm/docker_stats.py b/src/textual_webterm/docker_stats.py
index b253b2d..cf3c2a5 100644
--- a/src/textual_webterm/docker_stats.py
+++ b/src/textual_webterm/docker_stats.py
@@ -325,6 +325,9 @@ def render_sparkline_svg(
         # Empty placeholder
         return f'<svg width="{width}" height="{height}" xmlns="http://www.w3.org/2000/svg"></svg>'
 
+    # Prepend zero to start sparkline from baseline
+    values = [0.0, *values]
+
     # Normalize values to 0-1 range
     max_val = max(values) if max(values) > 0 else 1
     normalized = [v / max_val for v in values]