Fix 9 seam-review findings

- Pinned target's profitability flag now overrides the extractor's bucket guess
- Extractor/target periods canonicalized so ledger forecast chaining matches
- autoRunOnDrop no longer error-loops on ungradeable inbox content; failed
  batches count as seen
- Ship 2 default graders (pipeline requires >=2 valid reports per deck)
- UI styles 'failed' deck chips as errors; .markdown discoverable
- Unknown adjudicator model disables adjudication loudly instead of silently
- Reserved rids extractor/adjudicator; teardown also clears bm-grader-* containers

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

orchestrator/ledger.py

@@ -109,6 +109,7 @@ class Ledger:
     def prior_targets(self, slug: str, period: str) -> list[dict]:
         """Forward targets an earlier deck set for `period` (this deck's exam)."""
         company = self.get_company(slug)
+        period = decks_mod.canonicalize_period(period)
         if not company or not period:
             return []
         return (company.get("extracted_targets", {}).get(period) or {}).get("targets", [])
@@ -143,7 +144,9 @@ class Ledger:
         from_key = decks_mod.period_sort_key(period)
         by_period: dict[str, list[dict]] = {}
         for ft in forward_targets or []:
-            tp = ft.get("target_period")
+            # Extractor-supplied target periods are free-form ("2026-q3");
+            # canonicalize so the next deck's filename period finds them.
+            tp = decks_mod.canonicalize_period(ft.get("target_period"))
             if tp:
                 by_period.setdefault(tp, []).append(ft)
         for tp, targets in by_period.items():