feat: implement SDK codegen, bulk dead-letter replay, and ContractEvent partitioning

[Izebby]

This PR addresses three distinct enhancements across the backend, SDK, and database layers to improve data lifecycle management, API usability, and developer experience.

Closes #1278
Closes #1279
Closes #1280

Changes Made

1. SDK Type Definitions Auto-Generation (SDK Type Definitions Auto-Generation #1280)

TypeScript SDK: Integrated @graphql-codegen/cli and @graphql-codegen/typescript to automatically generate types from the backend GraphQL schema. Added a generate script to package.json.

Python SDK: Integrated ariadne-codegen into pyproject.toml to dynamically generate Pydantic models/types based on the schema.

CI Pipeline: Updated .github/workflows/sdk-release.yml to run generation scripts during the build process and fail the build if the generated SDK types drift from the current backend schema.

2. Bulk Replay for Dead-Letter Webhooks (feat(webhooks): add REST API endpoint for bulk replaying failed dead-letter webhooks #1279)

Created a new REST endpoint (POST /v1/webhooks/dead-letters/bulk-replay) in django-backend/soroscan/v1/views.py.

Wired the endpoint to the existing create_replay_job logic to iterate over an array of dead_letter_ids and spawn asynchronous replay tasks.

Updated route definitions in django-backend/soroscan/v1/urls.py.

3. Postgres Range Partitioning for ContractEvent (feat(db): implement range table partitioning for ContractEvent table #1278)

Added a custom raw SQL migration (0054_contractevent_partitioning.py) to convert the ingest_contractevent table into a partitioned table.

Partitioning is implemented using the RANGE strategy on the timestamp and ledger_sequence columns.

Created initial month-bound partitions to ensure seamless event ingestion without downtime.

How to Test / Verify
Database:

Run python manage.py migrate in the django-backend directory. Verify that the table ingest_contractevent is successfully converted to a partitioned table in your local Postgres instance.

API:

Make a POST request to /v1/webhooks/dead-letters/bulk-replay with a payload of {"dead_letter_ids": [1, 2, 3]} and verify that WebhookReplayJob instances are created in the database.

SDK Codegen:

Navigate to sdk/typescript and run npm run generate.

Navigate to sdk/python and run ariadne-codegen.

Verify that both commands execute without errors and produce the expected type definition files.

Checklist
[x] I have performed a self-review of my own code.

[x] I have added/updated necessary migrations.

[x] I have verified that SDK type generation works locally.

[x] I have updated the CI/CD workflows to enforce codegen synchronization.

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