docs: Add comprehensive Argus framework improvement proposal

[rjlacanlaled]

Summary

This PR introduces a comprehensive improvement proposal that outlines the roadmap to transform Argus from alpha state to a production-ready, high-quality Cardano indexing framework.

Key Improvements Proposed

Phase 1: Critical Fixes & Stability

• Fix N2CProvider concurrency bug (N2CProvider Connection Fails with TUI Mode Enabled #142) - Addresses the critical issue where TUI mode causes connection failures
• Enhanced error handling - Retry mechanisms, circuit breakers, graceful degradation
• Production logging - Structured logging with correlation IDs and multiple sinks

Phase 2: Performance & Scalability

• Deferred database operations - Batch operations across dependency chains for massive performance gains
• Database agnostic design - Plugin architecture supporting PostgreSQL, MongoDB, SQL Server, etc.
• Advanced chain providers - Health monitoring, connection pooling, failover
• Enhanced observability - OpenTelemetry integration, metrics, tracing

Phase 3: Developer Experience

• Built-in protocol reducers - Ready-to-use implementations for DeFi (Minswap, SundaeSwap), NFTs (CIP-25, CIP-68), governance, oracles
• Argus API service - Hosted indexers with public APIs eliminating infrastructure barriers for developers
• Enhanced development TUI - Block inspector, dependency visualization, detailed debugging
• CLI tooling - Project scaffolding, code generation, deployment automation

Phase 4: Enterprise Features

• High availability - Clustering, load balancing, failover mechanisms
• Advanced monitoring - Production-grade observability and alerting

Innovation Highlights

Deferred Database Operations Pipeline

Revolutionary approach where reducers in dependency chains collect operations instead of executing immediately, then batch execute at the end:

BlockReducer → TransactionReducer → TokenReducer
    ↓               ↓                 ↓
Collect ops    Collect ops      Execute ALL ops

Reduces DB roundtrips from hundreds to one per block.

Database Provider Abstraction

Clean interface allowing users to implement any database:

public interface IArgusDataProvider
{
    Task<T[]> QueryAsync<T>(IQuerySpecification<T> spec);
    Task InsertBatchAsync<T>(IEnumerable<T> entities);
    // ... other operations
}

Argus API Service

Hosted service providing instant access to indexed Cardano data:

var tokens = await argusApi.GetAddressTokenBalancesAsync(address);
var swaps = await argusApi.GetDexSwapsAsync("minswap", "ADA/DJED");

Impact

This roadmap addresses the critical stability issues while building toward a comprehensive ecosystem that would:

• Make Argus the premier choice for .NET Cardano development
• Dramatically reduce time-to-market for dApps (weeks to minutes)
• Provide both self-hosted and hosted solutions
• Support enterprise-scale deployments

Next Steps

The proposal is organized into logical phases without artificial deadlines, allowing for flexible prioritization based on business needs and available resources.

🤖 Generated with Claude Code

[Copilot]

Pull Request Overview

This PR introduces a comprehensive improvement proposal that outlines the roadmap to transform Argus from alpha state to a production-ready, high-quality Cardano indexing framework. The document serves as a strategic planning document that analyzes current issues and proposes solutions across four development phases.

• Critical bug fixes and stability improvements (Phase 1)
• Performance optimizations including deferred database operations and database-agnostic design (Phase 2)
• Developer experience enhancements with built-in protocol reducers and hosted API services (Phase 3)
• Enterprise features like high availability and advanced monitoring (Phase 4)

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

The section header is missing '}'

Suggested change

[Copilot]

This paragraph appears to be orphaned text that should either be integrated into the preceding section or removed, as it lacks proper context and formatting.

Suggested change

	This is focused purely on helping developers understand what's happening during development and debugging, not for production monitoring.
	> **Note:** This configuration is focused purely on helping developers understand what's happening during development and debugging, not for production monitoring.

[Copilot]

This YAML configuration block appears to be duplicated content from an earlier section and is not properly contextualized within the Enhanced Development TUI section.

Suggested change

	```
	# (Lines 813–851 removed. No replacement needed.)