refactor: remove unused text analysis module and integrate Qdrant enhancements

- Deleted the text analysis prompt constants and helpers as they are no longer needed.
- Added batch search functionality for Qdrant to optimize vector searches.
- Implemented methods for deleting expired Qdrant points and invalidating cache based on content hash.
- Updated text batch processor to use new timeout configurations and modified content building for moderation prompts.
- Enhanced text cache store to support new Qdrant integration and improved cache invalidation logic.
- Introduced a new user reputation model with a more nuanced trust scoring system, including penalties and rewards for user behavior.
- Added unit tests for the new trust model to ensure correctness of penalty and trust gain calculations.
- Updated configuration schema to reflect new timeout settings and removed deprecated OpenAI moderation keys.

.env.example

@@ -97,6 +97,7 @@ AI_LLM_MAX_CONCURRENT=5                 # Max concurrent LLM API calls (default:
 AI_LLM_IMAGE_MAX_DIMENSION=1024         # Max image dimension in pixels before resize (default: 1024)
 AI_LLM_TEXT_BATCH_SIZE=20               # Max messages per text-only moderation batch (default: 20)
 AI_LLM_MEDIA_ANALYSIS_TIMEOUT_MS=60000  # Timeout in ms for media analysis calls (default: 60000)
+AI_LLM_TEXT_ANALYSIS_TIMEOUT_MS=30000  # Timeout in ms for text-only analysis calls (default: 30000)
 
 # === AI Analysis Tuning ===
 AI_ANALYSIS_DEBOUNCE_MS=500             # Debounce window for batching messages in ms (default: 500)
@@ -110,11 +111,6 @@ AI_ANALYSIS_PROCESSING_TIMEOUT_MS=120000 # Conversation lock timeout in ms (defa
 AI_ANALYSIS_INDIVIDUAL_MAX_CONCURRENT=50 # Max concurrent individual-fallback jobs (default: 50)
 AI_ANALYSIS_INDIVIDUAL_CB_THRESHOLD=50  # Consecutive errors before circuit breaker trips (default: 50)
 
-# === OpenAI Moderation (optional separate provider) ===
-# OPENAI_MODERATION_API_KEY=              # OpenAI API key for moderation endpoint
-# OPENAI_MODERATION_BASE_URL=https://api.openai.com/v1  # OpenAI moderation base URL (default)
-# OPENAI_MODERATION_MODEL=omni-moderation-latest         # OpenAI moderation model (default)
-
 # === Auto-Delete ===
 AUTO_DELETE_FLAGGED_ENABLED=true        # Enable auto-deletion of flagged messages (default: true)
 AUTO_DELETE_FLAGGED_DRY_RUN=true        # Dry-run mode: log but do not delete (default: false)