Comments only render inside TranscriptionEditView, so a deep-link
into a document with existing reviewed transcriptions landed the
user in read mode with no comment element in the DOM — the scroll
target silently missed.
scrollToCommentFromQuery now takes a setPanelMode callback and calls
it with 'edit' whenever both query params are present. The page's
own transcribe-mode $effect checks a skipInitialPanelMode flag the
deep-link flow sets, so its default-panel-mode logic doesn't race
against the explicit override.
Two new helper tests pin the contract: panel mode is forced to
'edit' both when transcribe mode is off (entering fresh) and when
it is already on (same-page notification click).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Pure function that reads commentId + annotationId from the page URL,
enters transcribe mode if needed, activates the block's annotation,
scrolls the target comment into view, focuses it for screen readers,
fires the existing annotation flash, and strips the params via the
injected callback.
All side effects go through callbacks so the helper is unit-testable
without mounting the page or a DOM (only scrollIntoView/focus are
called on the injected element). Eight tests cover both absent params,
happy path, transcribe-mode activation, missing DOM target, reduced
motion, flash trigger, and URL strip.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
