Symptom: org import zoomed to fit the parent + first child, then froze
at that framing while the remaining children kept materialising
off-screen. The user had to manually pan/zoom to see the new arrivals.
Two stacked bugs in useCanvasViewport's deploy-time auto-fit:
1. The user-pan-respect gate stamps userPannedAtRef on EVERY
pointerdown that lands inside .react-flow__pane. That fires for
ordinary clicks (deselect, click-near-a-card, modal-close-bubble
from the import dialog) — not just for actual pan gestures. One
accidental pre-import click was enough to lock out every fit for
the rest of the deploy. Wheel is the canonical unambiguous
pan/zoom signal; drop pointerdown.
2. Even with a real pan during deploy, when more children land the
org's bounds grow and the user has lost context — the new
arrivals are off-screen and the deploy is the primary thing they
want to watch right now. The guard had no growth awareness, so
one pan cancelled all follow-up fits unconditionally. Now we
track the subtree size at the last fit (per root), and if the
current subtree is larger we force the fit through regardless of
the user-pan timestamp. When the subtree size hasn't changed
(status updates on already-positioned nodes), the user-pan
respect still applies — so post-deploy exploration isn't
yanked back.
The Map keyed by root id supports back-to-back imports of different
orgs without one's growth count blocking the other's first fit.
985 canvas tests pass; tsc clean.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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