Add AnchorKit diagnostics export builder

[El-swaggerito]

Description

Difficulty: Expert

Type: Feature

Summary

Add a diagnostics export builder for AnchorKit applications.

Current Behaviour

Diagnostics may be scattered across config, network, validators, wallet state, and examples.

Expected Behaviour

AnchorKit should generate a safe, redacted diagnostics export for support and debugging.

Suggested Implementation

Create diagnostics types, export builder, redaction, web integration, tests, and docs.

Files or Areas Likely Affected

• packages/diagnostics/
• packages/config/
• apps/web/
• tests/
• docs/

Acceptance Criteria

• Diagnostics export builder is implemented.
• Config, network, and validation states are represented.
• Sensitive data is redacted.
• Web UI can display or copy diagnostics.
• Tests verify redaction.
• Docs explain safe sharing.

Additional Notes

Do not include secrets or private keys.