✨ feat: Extend frontend and microblog service to use rag service for spam post predictions

[LauraRandl]

This PR integrates the new rag service into the rest of the Unguard application, mainly by extending the frontend and microblog service:

• The Microblog service now requests and stores a spam prediction for each new post
• The Microblog now stores user ratings for the spam prediction of each post and provides new routes for retrieving and manipulating them
• New frontend component showing spam prediction from RAG service for each post
• New frontend component allowing logged in users to rate the spam predictions of each post

The new frontend components are only rendered for posts that have a spam prediction.

[Copilot]

Pull request overview

This PR integrates the RAG (Retrieval-Augmented Generation) service for spam detection into the Unguard application, adding spam prediction capabilities to posts and enabling users to rate these predictions.

Changes:

• Backend integration: Microblog service now requests spam predictions from RAG service asynchronously and stores results in Redis with user rating functionality
• Frontend components: New UI components display spam predictions and allow logged-in users to upvote/downvote predictions
• Infrastructure updates: Helm chart templates and environment variable configuration for RAG service integration

Reviewed changes

Copilot reviewed 30 out of 30 changed files in this pull request and generated 18 comments.

Show a summary per file

File	Description
src/rag-service/README.md	Added environment variables documentation table with typo and incorrect descriptions
src/microblog-service/src/test/java/org/dynatrace/microblog/utils/PostSerializerTest.java	Updated test to include new spam prediction parameter
src/microblog-service/src/main/java/org/dynatrace/microblog/utils/JwtTokensUtils.java	Added helper method to extract user ID from JWT token
src/microblog-service/src/main/java/org/dynatrace/microblog/redis/RedisClient.java	Added Redis operations for spam prediction ratings storage and retrieval with vote management
src/microblog-service/src/main/java/org/dynatrace/microblog/ragservice/RAGServiceClient.java	New client for communicating with RAG service to classify posts as spam/not spam
src/microblog-service/src/main/java/org/dynatrace/microblog/exceptions/InvalidSpamPredictionException.java	New exception for invalid spam prediction responses
src/microblog-service/src/main/java/org/dynatrace/microblog/dto/SpamPredictionRatings.java	New DTO for spam prediction voting data
src/microblog-service/src/main/java/org/dynatrace/microblog/dto/SerializedPost.java	Updated to include spam prediction label
src/microblog-service/src/main/java/org/dynatrace/microblog/dto/Post.java	Updated to include spam prediction label field
src/microblog-service/src/main/java/org/dynatrace/microblog/MicroblogController.java	Added async spam classification, new endpoints for spam prediction ratings, and executor service
src/microblog-service/README.md	Added RAG service environment variables documentation
src/microblog-service/Dockerfile	Changed AS keyword to uppercase for consistency
src/frontend-nextjs/services/api/SpamPredictionVotesService.ts	New service for backend API calls related to spam prediction voting
src/frontend-nextjs/services/SpamPredictionVotingService.ts	Service layer for handling spam prediction votes with trailing slash inconsistencies
src/frontend-nextjs/hooks/queries/useSpamPredictionUserRating.ts	React Query hook for fetching spam prediction ratings with type mismatch bug
src/frontend-nextjs/hooks/mutations/useRateSpamPrediction.ts	React mutation hooks for upvote/downvote actions
src/frontend-nextjs/enums/queryKeys.ts	Added query key for spam prediction ratings
src/frontend-nextjs/components/Timeline/Timeline.tsx	Updated to pass spam prediction prop to Post component
src/frontend-nextjs/components/Timeline/SpamPredictionUserRating.tsx	Component displaying vote counts and buttons for logged-in users
src/frontend-nextjs/components/Timeline/PostSpamPrediction.tsx	Alert component showing spam status with variable shadowing bug in ErrorBoundary
src/frontend-nextjs/components/Timeline/Post.tsx	Updated to display spam prediction component
src/frontend-nextjs/components/SwaggerUIReact.tsx	Minor whitespace cleanup
src/frontend-nextjs/app/post/page.tsx	Updated to pass spam prediction prop
src/frontend-nextjs/app/api/post/route.ts	Minor whitespace cleanup
src/frontend-nextjs/app/api/post/[postId]/spam-prediction-user-rating/upvote/route.ts	API route for upvote endpoint
src/frontend-nextjs/app/api/post/[postId]/spam-prediction-user-rating/route.ts	API route for fetching spam prediction ratings with missing error handling
src/frontend-nextjs/app/api/post/[postId]/spam-prediction-user-rating/downvote/route.ts	API route for downvote endpoint
chart/values.yaml	Added RAG service environment variables with unused configuration value
chart/templates/rag-service-configmap.yaml	Added optional LANGDOCK_API_KEY configuration
chart/templates/microblog-service.yaml	Added RAG service environment variables to deployment

[orazefabian]

Pls do the requested changes and have a look at the remaining copilot comments. Some of them might be worth having a closer look at.

[orazefabian]

Left additional, comments.