feat(categorize): dimension bags end-to-end + runtime template learning (#1273)

* feat(categorize): dimension bags end-to-end + runtime template learning

The categorize path could not tag: categorize-core accepted a dimensions
bag but no route or UI ever passed one, and runtime template learning
dropped the bag entirely (only SIE import produced dimension-carrying
patterns).

- CategorizeTransactionSchema gains dimensions; the dashboard route, v1
  single and v1 batch-categorize apply it to the mapping result's
  business lines (explicit bag wins over a learned counterparty bag).
- categorization_templates.default_dimensions (migration 20260728091000)
  records the bag of the latest tagged booking; latest-explicit-wins, an
  untagged booking never erases it. Applied on the legacy single-line
  template path and the mirrored-refund path; multi-line SIE patterns
  keep their authoritative per-entry bags.
- QuickReviewDialog gets a LineDimensionFields picker (dimensions_enabled
  gate, same as BulkBookDialog), prefilled from the counterparty
  suggestion's learned bag; hidden for multi-line patterns whose per-line
  bags would ignore an edit.

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

* Renumber migration above 20260728120000 (out-of-order vs prod after #1271)

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

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

lib/transactions/category-suggestions.ts

@@ -247,6 +247,10 @@ export interface SuggestedTemplate {
   risk_level: string
   requires_review: boolean
   line_pattern?: LinePatternEntry[] | null
+  // Learned {sie_dim_no: code} bag on counterparty suggestions: prefills the
+  // review dialog's dimension picker (the server applies it at booking anyway;
+  // surfacing it keeps the user in the loop).
+  default_dimensions?: Record<string, string> | null
 }
 
 /**