feat: add resumable evidence uploads with chunking and session manage…

[Delightech28]

Description

This PR introduces resumable upload functionality for verification evidence. Large evidence uploads (up to 50MB) are now supported via a chunking mechanism to ensure network stability and recovery semantics without having to restart from zero when a connection drop occurs.

Changes

• Database Schema: Introduced UploadSession and UploadChunk models to schema.prisma to track upload state, file constraints, expiration (24h TTL), and strictly guarantee sequential block delivery.
• Uploads Module: Created a new UploadsModule and wired it into the core AppModule.
• Endpoints:
  • POST /uploads/session: Initializes a multipart upload and asserts valid content types (image/*, application/pdf, etc.) and payload size limits.
  • PUT /uploads/session/:id/chunks/:chunkIndex: Idempotent binary ingestion endpoint for individual chunks, enabling resume semantics seamlessly over unstable networks.
  • POST /uploads/session/:id/finalize: Asserts chunk integrity (contiguous chunk indexing, total size alignment) and validates ownership before permanently marking the upload session as completed.

Validation & Security

• Idempotent chunk logic ensures that multiple retries of a failing chunk on a spotty connection do not corrupt the database state.
• Strict 24-hour expiration prevents orphaned upload sessions from persisting indefinitely.
• Server-side chunk size aggregation ensures the final received data matches the initial declared totalSize bytes.
• Ownership validation assertions guarantee that only the initiator of an upload session can finalize it.

closes #254

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[Cedarich]

Please fix workflow

[Cedarich]

Please fix failing build