docs(kaizen): chart the improvement potential as a mermaid xychart

Before/after bars with the target as a line series; the caption keeps
the nuance the chart can't draw (true before value is ∞, not 611 s).
This commit is contained in:
Julien Calixte
2026-07-13 11:03:43 +02:00
parent acbafa3d6b
commit 1df25f75d6

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@@ -19,9 +19,17 @@ device — only the toy test repo has. Full measurement trail:
**Measurement**: seconds from `:sync` to the snackbar, on the real
`jcalixte/notes` clone on the device.
| Current method | Target (new method) |
|---|---|
| never completes — first commit freezes ~611 s, a reset re-enters the freeze (effectively ∞; 0 successful syncs ever) | ≤ ~10 s |
```mermaid
xychart-beta
title "Improvement potential"
x-axis ["Before kaizen — first commit ~611 s, never completes", "After kaizen — target ≤ ~10 s"]
y-axis "seconds, :sync → snackbar" 0 --> 650
bar [611, 10]
line [10, 10]
```
The before bar understates the reality: a reset re-enters the freeze, so the
true value is ∞ — 0 successful syncs ever. The line is the ≤ ~10 s target.
## 2) Current method analysis