Three fixes against the v0.39.0 user feedback.
- Layout exception "BoxConstraints forces an infinite
height". `_PillarRow`'s wide-window path used
`Row(crossAxisAlignment: CrossAxisAlignment.stretch)`
inside a `Column` inside a `SingleChildScrollView` — Row
inherits unbounded height, can't stretch to anything,
Flutter throws. Wrapped the Row in `IntrinsicHeight` so
the Row's height is bounded to the tallest child first.
Same shape `_DocsRow`'s narrow-window path was triggering
with `Wrap` + `SizedBox(width: double.infinity)` — replaced
with a plain `Column` for that path; the wide path keeps
the Wrap with the proper finite cardWidth.
- Dropped the "WIE ES ZUSAMMENPASST" / "HOW IT FITS
TOGETHER" section header. Operator-feedback was that the
label sounded like a question without an answer. The hero
already establishes the page; the three Hub/Module/Flow
cards are self-explaining beneath it. Header was visual
clutter and the underlying ARB keys are gone.
- Reordered the sidebar: Welcome, **Store**, Doctor, Flows,
Audit, Approvals. Store is the operator's daily-use
surface and belongs above Doctor (which is a diagnostics
page). Welcome stays slot 0 as the first-launch landing.
Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>