fix: Correct ArXiv/OpenAlex paper fetching in analysis_service

fix: Add chat method to K2ThinkEngine for scientific_chat route

Mise à jour: routes d'analyse et moteur k2

Fix: Add mock fallback for DOAJ API 403 Forbidden error

Fix: K2 Think JSON parsing bugs

fix: update K2 contradictions schema and mock memory embeddings

fix: pydantic validation errors on k2 raw output

Add explicit JSON schema to instruction prompt to fix validation and parsing errors

Fix JSON extraction logic to handle <think> blocks in k2_think_engine.py

fix: replace with_structured_output with manual JSON parsing (incompatible with langchain-openai 0.0.5)

feat: robustify architecture, add retry parser and auto-alembic migration

refactor: async architecture, structured output, alembic baseline

Fix UnboundLocalError for empty K2 response

Update K2 Think Engine service

Fix K2 response sanitation and Pydantic conversion fallback

feat(database): enable row level security on all tables

fix(backend): sanitize Ellipsis and placeholders in K2 response conversion

fix: make K2 Think JSON extraction and repair extremely robust

docs: create SECURITY.md policy file

fix: resolve slowapi circular import

feat: enforce strict CORS and SlowAPI rate limiting

feat: add startup-grade backend routes for massive credit refills, SaaS policy settings, and real-time logs fetch

feat: implement POST /me/share API endpoint to safely reward users with +500 K2 Credits

feat: implement secured admin route router, endpoints, user is_admin property helper, and auto-seeding promo script

style: enhance Matplotlib chart with premium dark background, value labels, and tight margins

fix: return FileResponse for chart POST endpoint instead of JSON

fix: indent JSON parsing block inside for loop

fix: merge multiple markdown json blocks to prevent dropping keys

fix: handle lists returned by K2 for string fields in ExperimentalProtocol

fix: robust extraction of nested JSON keys from K2 engine output

fix: static chart serving and JSON URL response for Strategy Visualizer

fix: optimize K2 engine performance with reduced tokens and conciseness to prevent timeouts

fix: gracefully catch ArXiv HTTP 429 errors and fix export analysis endpoint parameter binding

feat: enhance protocol schema and add audit log traceability

fix: prioritize full block JSON extraction and fix comparative_analysis search

chore: update K2 JSON schema order, update extraction strategy, and add debugging files

fix: harden JSON parsing and handle missing think tags

Fix Pydantic validation errors for fallback objects

Bulletproof JSON extraction, strict prompts, and salvaged text fallback

Fix f-string syntax error: escape curly braces

Fix syntax error: restore missing triple quotes in K2 prompt

Enhance LLM prompt and regex extraction for JSON robustness

Fix chat UUID mapping and harden JSON auto-repair

Fix Pydantic ValidationError for ExperimentalProtocol missing fields

Fix K2 timeout detection and JSON parsing errors

Implement adaptive retry for K2 timeouts

Fix schema nesting for frontend compatibility

Total rewrite of K2ThinkEngine for robustness

Optimize K2 prompt and add JSON repair logic

Fix NameError, improve logging and UUID handling