Remove workspace-specific analysis feature in favor of ResourceAnalysis

[halsk]

Overview

Remove the legacy Slack workspace-specific analysis feature and consolidate all analysis functionality to use the ResourceAnalysis system.

Background

Currently, there are two parallel systems for channel analysis:

1. Legacy system using SlackAnalysis and SlackChannelAnalysis tables
2. New system using ResourceAnalysis for integration-based analysis

To simplify the codebase and user experience, we should remove the legacy system entirely.

Tasks

Frontend Changes

• Remove /frontend/src/pages/slack/ChannelAnalysisPage.tsx
• Remove /frontend/src/pages/slack/ChannelAnalysisHistoryPage.tsx
• Remove analysis-related routes from App.tsx (paths containing /dashboard/analytics/slack/channels/:workspaceId/:channelId/analyze or /history)
• Remove analysis buttons/links from WorkspaceList.tsx
• Remove analysis tabs/sections from ChannelList.tsx
• Remove any sidebar navigation elements related to workspace analysis
• Add redirects or helpful messages for users looking for analysis features

Backend Changes

• Remove table definitions for SlackAnalysis, SlackChannelAnalysis, SlackContribution, and analysis_channels
• Remove API endpoints for workspace analysis:
  • /api/v1/slack/workspaces/{workspaceId}/channels/{channelId}/analyze
  • /api/v1/slack/workspaces/{workspaceId}/channels/{channelId}/analyses
  • /api/v1/slack/workspaces/{workspaceId}/channels/{channelId}/analyses/{analysisId}
• Remove associated service classes specific to these endpoints
• Update API documentation to remove references to these endpoints

Testing

• Verify all analysis features work properly through the ResourceAnalysis system
• Ensure no UI elements reference the removed features
• Confirm no broken links or navigation paths

Notes

• No data migration needed as this is not a production environment
• All analysis functionality should be accessible through the integration paths
• This change will simplify the codebase and reduce maintenance burden