Guillem Arias f6108e2a7b fix(goals/chart): drop title-tooltip, step projection cursor, dot follows projection line, collision-aware y-ticks, clean tooltip ...

Four chart fixes in one pass.

1) Browser was rendering the <title> child as a native hover tooltip
that fought with the custom crosshair tooltip. Drop <title>; use
aria-label on the <svg role="img"> instead — same SR accessible name,
no native tooltip side-effect.

2/3) The hover crosshair clamped at today: bisector ran the saved
series, which ends at today, so future hovers stuck the dot at the
last saved point. Now the controller forks:
  - Past hover: snap to nearest contribution via bisector.
  - Future hover: snap to whole-week intervals along the projection
    segment ([today, target_date]) and place the dot at the
    interpolated y on the dashed line. Movement steps cleanly week
    by week instead of pixel-by-pixel jitter.

4) Tooltip drops the redundant line:
  - Past: "<date> · Saved: $X" (no Projected — there isn't one).
  - Future: "<date> · Projected: $X" (no Saved — it's the future).

5) Y-axis tick label suppressed when its value falls within 5% of the
target line so "$2.5K" and "Target · $2,400" stop overlapping near
the right edge. Gridline stays; only the y-axis label drops.

Verified live via Playwright on House downpayment goal: <title>
absent, aria-label populated, past tooltip "Feb 10, 2026 · Saved:
$11,750", future tooltip "Nov 29, 2027 · Projected: $32,235",
neighbouring future x snaps to "Dec 13, 2027 · $32,704" (2-week jump
across the snapping boundary).

2026-05-11 20:56:45 +02:00

16 KiB

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