install-history: add

[bagder]

The numbers are all guess-work

[Copilot]

Pull request overview

Adds a new “install history” graph to the stats dashboard, wiring it into the existing Makefile/gnuplot-based graph generation pipeline.

Changes:

• Register install-history.svg in the Makefile graph outputs and add build rules to generate it from a checked-in data file.
• Add a new gnuplot script (install-history.plot) to render global install counts over time.
• Add the underlying time series data (install-history.md) and expose the graph in all.txt for the dashboard list.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
Makefile	Adds install-history.svg to the build outputs and defines rules to copy data + run gnuplot.
install-history.plot	New gnuplot script for rendering the install-history time series.
install-history.md	New (hand-maintained) install-history data used as the plot input.
all.txt	Adds the new graph to the dashboard graph-name mapping.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.