Frontend half of the four Verfahrensablauf appeal bugs.
Bug 1 (frontend half) — Side selector dead on appeal. The column
bucketer now reads dl.appealRole (engine-stamped under
appeal_target) and routes each "both" appeal rule via the user
side: side=claimant maps the user to the appellant, so appellant
filings land in 'ours' and appellee filings in 'opponent';
side=defendant mirrors. side=null keeps the legacy mirror so every
appeal rule renders in both columns (every-rule-visible behaviour
the brief calls out). The new appealAware opt gates the path so
non-appeal proceedings keep their existing bucketing untouched.
Removed upc.apl.unified from APPELLANT_AXIS_PROCEEDINGS — appeal
routing is now per-rule via appealRole, not a page-level appellant
collapse. Other role-swap proceedings (EPA opp, DE/DPMA appeals)
keep the appellant axis since they have no appeal_target metadata.
Bug 3 — Duration label appends parent name. formatDurationLabel now
takes an optional parent fallback and renders "<n> <unit> <timing>
<parent>". deadlineCardHtml resolves the parent per-rule
(dl.parentRuleName / EN variant), falling back to opts.trigger
EventLabel for root rules with a non-zero duration (e.g.
Berufungseinlegung 2 mo. after the Endentscheidung). renderColumns
Body + renderTimelineBody auto-derive the trigger event label from
the response via the new pickTriggerEventLabel helper unless the
caller passes one explicitly.
Bug 4 — Duration prefix stripped from deadline_notes. New
stripLeadingDurationFromNotes regex peels off leading
"Frist N <unit> <vor|nach|ab|seit> …. " (DE) and
"<N>-<unit> period from …" / "N <unit> BEFORE …" / "Period is N
<unit> from …" (EN) up to the first sentence boundary. Wired into
deadlineCardHtml so noteHint + notesBlock both render the deduped
text. Per the brief's option (a): conservative regex, composite
durations with "ODER" / "whichever is the longer" stay untouched
as a follow-up editorial cleanup. deadline_rules DB untouched.
Tests: 22 new test cases across appeal-aware bucketing,
formatDurationLabel parent append, deadlineCardHtml duration
tooltip resolution, and stripLeadingDurationFromNotes regex
(positive + negative + composite + EN/DE variants). All 209
frontend tests pass.
Engine wire fields added in the preceding commit (AppealRole,
IsTriggerEvent). Reads them from CalculatedDeadline without
breaking the wire contract for non-appeal callers.