* feat(mercury): pending transactions, kind/counterpartyId metadata, and test coverage
- Transaction::PENDING_PROVIDERS: add "mercury" so the existing pending
reconciliation pipeline (pending→posted amount matching in
ProviderImportAdapter) activates for Mercury entries
- MercuryEntry::Processor: pass extra: to import_transaction with
extra["mercury"]["pending"] = true/false (status == "pending")
extra["mercury"]["kind"] = ACH / Wire / Card / etc.
extra["mercury"]["counterparty_id"] = Mercury counterparty UUID
Pending transactions are now imported with the flag set rather than
being silently ignored; failed transactions continue to be skipped
- Tests (new files, 30 cases):
- test/models/mercury_entry/processor_test.rb — sign convention,
date fallback, name priority, notes concat, pending flag, kind,
counterpartyId, failed skip, idempotency, merchant creation,
no-linked-account guard
- test/models/mercury_item/importer_test.rb — account discovery,
no-duplicate unlinked records, balance update on linked accounts,
transaction dedup (append-only new ids), sync window (90-day first
sync, last_synced_at-7d subsequent), 401 marks requires_update
- test/models/mercury_account/processor_test.rb — balance update,
CreditCard sign negation, cash_balance parity, no-linked-account
no-op, transaction processing delegation
* fix(mercury): address review findings — pending SQL, dedup upsert, N+1, nil assertion
- provider_import_adapter: add mercury to all three find_pending_transaction*
SQL predicates so Mercury pending entries are found and claimed when the
posted version arrives (exact, fuzzy, and low-confidence paths)
- mercury_item/importer: replace append-only dedup with an upsert-by-id
that replaces the stored raw payload when status changes from pending to
non-pending; prevents pending flag from persisting indefinitely when Mercury
reuses the same transaction ID for the posted version
- kraken_account/ledger_processor: preload all existing kraken ledger
external_ids into a Set before the loop; replaces per-entry exists? query
(N+1) with an in-memory Set#include? lookup
- test/models/mercury_account/processor_test: capture return value from
process and add assert_nil to enforce the nil contract stated in the test name
* fix(mercury): route transaction-count diagnostics through DebugLogEntry
6768d03b3c