SQLBI Whiteboard 1.5.0 (dev 3334)

Animate the restart figure, and pin down the path matching (#125)

Two things, and one of them is a correction.

## The figure now moves

`Pick up where you left off` was the only figure on the page that sat
still. It now uses the
same staggered `fig-pop` as f4, f8 and f10 — same 6.5s cycle, same 0 /
.3 / .6 delays:

1. the board as you left it,
2. the restart arrow,
3. the board again.

So the second window arriving after the first is the thing the eye
follows. It rests on both
windows for most of the loop, per the comment at the top of that CSS
block, and inherits the
existing `is-visible` observer and the `prefers-reduced-motion` gate
without touching either.

## The short-path limitation does not exist

I reported that `IsSameFile` would miss a match between
`C:\Users\MARCOR~1\board.wboard` and
`C:\Users\MarcoRusso\board.wboard`. That was wrong. **`Path.GetFullPath`
expands 8.3
components** against the directory entries, so the original code already
handled it.

I found out by writing the fix: a `GetLongPathName` interop went in, and
the new test passed
just as well with it disabled. Deriving a real short path with
`GetShortPathName` and printing
what `GetFullPath` returns settled it — the long form comes back. The
interop is removed; it
did nothing.

What survives is the part that has value:

- **`IsSameFile` moves from `MainWindow` to `SessionStore`**, where the
smoke tests can reach
it. That move is what made the question answerable instead of arguable.
- **A smoke test covers it**, deriving a genuine 8.3 path at run time
rather than asserting
against a hand-written one. It also covers case differences and a
redundant path component.
On a volume with 8.3 names turned off it degrades to comparing a path
with itself rather
  than failing.
- **The remark on `IsSameFile`** records why it is correct and the one
condition it rests on:
the expansion needs the file to be there to read. That holds here, since
the board being
  opened exists and the slot that matches it names that same file.

## No version bump

`VersionPrefix` stays at 1.5.0. Nothing here changes what the
application does — a refactor,
a test, and a site figure. Say the word if you want 1.5.1 anyway and I
will add it with an
honest entry.

Both smoke harnesses pass; the figure checked in light and dark, and
frame-sampled mid-cycle
to confirm the order.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>