fix(pending-ops): record posted ids and land failed_partial instead of clean rejected after partial commits (#842) (#1110)

Multi-step executors (match_transaction_invoice, credit_invoice) post an
irreversible voucher or persist a credit note and then run later fallible
steps. A failure there previously marked the whole op status=rejected,
hiding the posted entity and its id from operators.

- new migration 20260722134114: add failed_partial to the
  pending_operations status CHECK and treat it as terminal in both
  immutability triggers (immutable, undeletable, never re-claimable)
- PartialCommitError + ExecutorResult.partialPostedIds carry the posted
  ids; the dispatcher writes status=failed_partial with
  result_data.posted_ids and returns code=partial_commit
- instrument only the two named executors; hoist the read-only
  settlement-account resolution above the storno in the match executor
- consumer sweep: status union + query schema widened, failed_partial
  folds into the Avvisade tab with a badge and posted-ids detail line,
  bulk/reject routes and MCP tools message it explicitly, worklist and
  expiry sweep intentionally untouched (not pending work)
- tests: pg-real coverage for the new terminal semantics, dispatcher unit
  tests for both partial paths plus byte-for-byte regression guards

Fixes #842

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

messages/en.json

@@ -505,7 +505,9 @@
     "origin_api": "Suggested via API integration",
     "origin_cron": "Created by a scheduled job",
     "badge_auto_expired": "Expired automatically",
-    "auto_expired_detail": "Expired automatically after 30 days without action. Nothing was booked."
+    "auto_expired_detail": "Expired automatically after 30 days without action. Nothing was booked.",
+    "badge_failed_partial": "Partially completed",
+    "failed_partial_detail": "The action was interrupted after an irreversible posting had already been made. What was posted remains and may need manual correction."
   },
   "deadlines": {
     "title": "Deadlines",

messages/sv.json

@@ -505,7 +505,9 @@
     "origin_api": "Föreslaget via API-integration",
     "origin_cron": "Skapat av automatiskt jobb",
     "badge_auto_expired": "Utgick automatiskt",
-    "auto_expired_detail": "Utgick automatiskt efter 30 dagar utan åtgärd. Inget bokfördes."
+    "auto_expired_detail": "Utgick automatiskt efter 30 dagar utan åtgärd. Inget bokfördes.",
+    "badge_failed_partial": "Delvis genomförd",
+    "failed_partial_detail": "Åtgärden avbröts efter att en oåterkallelig bokföring redan hade skett. Det som bokfördes står kvar och kan behöva rättas manuellt."
   },
   "deadlines": {
     "title": "Deadlines",