fix(indexer): parse and persist ContribReconciled event (#169)

[trenysx]

Summary

Closes #169

The escrow contract emits a distinct ContribReconciled event from the privileged
eceive_contribution admin path (see emit_reconciled_contribution in contracts/production_escrow/src/events.rs). This event is intentionally separate from ContribReceived so off-chain monitoring can flag admin reconciliations vs. genuine deposits.

The indexer's EventParserService.parseEvent had no case for ContribReconciled — it fell through to default: return null and was silently dropped with no audit row, no broadcast, and no log.

Changes

1. server/src/indexer/types/soroban-events.types.ts: Added ContribReconciledData interface (mirrors CampaignInvestedData) and included it in ParsedEventData union.

2. server/src/indexer/parsers/event-parser.service.ts:

   • Added 'ContribReconciled' case in parseEvent → parseContribReconciled (payload shape: (investor, timestamp, amount) matching the contract).
   • Parsed events are tagged 'campaign.contrib_reconciled' (distinct from 'campaign.invested').
   • Added handleContribReconciled persistence handler: audit-only — upserts the user for FK validity, logs the reconciliation, but does not increment Campaign.totalFunded (the authoritative funded amount stays driven by ContribReceived/CampaignFunded events; the reconciliation is a bookkeeping path without real token transfer, per the contract's design and the issue's suggestion to consider keeping it separate).
   • The generic Transaction audit row is created automatically by persistEvent once the event type is recognized.

3. server/src/websocket/events.types.ts + client/src/lib/websocket/events.types.ts: Added 'campaign.contrib_reconciled' to CampaignEventType union so realtime broadcast carries the correct event type.

Tests

Added a ContribReconciled describe block to event-parser.service.spec.ts:

1. Parses and persists a distinctly-tagged Transaction row ( ype: 'campaign.contrib_reconciled') without creating an Investment row or incrementing otalFunded.
2. Broadcasts a campaign.contrib_reconciled realtime event distinguishable from campaign.invested.
3. Logs and skips malformed payloads.

All 48 unit tests pass; sc --noEmit and eslint are clean for changed files.