feat: add bridge comparison report and analytics controls

[Ada-Girly881]

Summary

This PR delivers the bridge analytics and reporting improvements requested across the following issues:

• Closes feat: Build Bridge Comparison Report #1149
• Closes feat: Create Transaction Address Labeling Service #1152
• Closes feat: Add Historical Liquidity Heatmap Export #1150
• Closes feat: Implement Chart Data Sampling Controls #1151

It introduces the bridge comparison reporting workflow, transaction address labeling support, historical liquidity heatmap export, and chart data sampling controls to improve operational visibility, analysis quality, and dashboard performance.

What's included

• Bridge comparison report generation with structured output and user-facing workflow
• Transaction address labeling service for better transaction traceability and attribution
• Historical liquidity heatmap export for time-based analysis and external reporting
• Chart data sampling controls to balance precision, performance, and usability
• DB migration for the new address labels table
• Route registration wired into the existing analytics, bridge, and data route groups

API and behavior

• Adds the required data model and service contracts for bridge comparison reporting
• Introduces labeling behavior for transaction address metadata
• Supports exportable historical liquidity heatmap data
• Enables configurable chart sampling to reduce overload while preserving analytical integrity
• Includes validation and safe failure handling for invalid input

Testing

• Unit tests added for all four new services

Rollout and rollback

• Backward-compatible additive changes with new routes and one new table
• Rollback path is to revert the migration and disable/remove the new routes

Related issues

Closes #1149
Closes #1152
Closes #1150
Closes #1151

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[Mosas2000]

Please resolve the conflict