Merge PR #49: pass birth-time accuracy truth into consultation engine

Reviewed: tsc + consult 295 + rectification 747 + python suites green;
guard functions and window/general instructions verified unchanged.
Conflict: BUG entry renumbered 467→468 (467 taken by report-extraction).
Review fix: test_consultation_birth_accuracy.py added to CORE_PYTEST_TARGETS
(pytest-style file outside the rectification glob would never hit the auto gate).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0155nFCgCHtoA7jhSDGmZmMu

frontend/src/app/api/consult/route.ts

@@ -1181,6 +1181,7 @@ export async function POST(request: Request) {
         plan: prepared.preReserveResult,
       }),
       consultationMode,
+      { birthTimeSource: prepared.serverChart.truth.birthTimeSource },
     );
     const workflowReceipt = consultationWorkflowReceipt(workflowContext);