June 2026 performance highlight across cozy-drive, cozy-stack, cozy-client, and cozy-libs. Delivered core features that improve user collaboration, security, and reliability, while strengthening test coverage and enterprise readiness. The team reduced friction in sharing workflows, enhanced conflict handling for uploads, and reinforced the platform’s security posture with CSP and robust token exchange context resolution.

May 2026 focused on reliability, security, and shareability across cozy-stack and cozy-drive. Delivered key identity, sharing, and auth enhancements, strengthened error signaling for OAuth flows, and expanded test coverage and observability to reduce risk and improve maintainability. Across two repositories, the work tightened governance around trusted contacts, improved shared-drive experiences, and laid groundwork for cross-service interoperability.

April 2026 (2026-04) - Concise monthly summary Key features delivered: - Expose login state in CozyData payload, enabling session-aware UI and feature flags (commit 9635f0ad16d0966eaa7bdfae509e318f51aa629b). - B2B Contacts Sync: introduced RabbitMQ contracts, find-by-email and create flow in the contact model, and delete-user handler with sync on user creation (commits f5dc6023defc6eaf66d552fd4dbd156dcadd0f23; eb644f6a7497a6067a08237f7f9e5de476f48515; c1534c3085924d2ddec0281f20d07721b5eaba90). - Shared drives and file sharing enhancements: drive_root_type field in sharing; create share drive endpoint supports file shared drives; comprehensive read routes, rename/mutation guard, share-by-link on file, copy/move support, read metadata, changes feed, realtime support, root handling helper, and tests (multiple commits including 29d74fda841f38de02b0ecccab3ac0fc57aa8f26; e4110c1ae28800392ee5db9445d2352a5327b2ad; e5a479d0c023a2d55be47f3f3500469da69d4a37; ceb58d3997d5ba6b83654b4af4ed45c00ea233e1; a35072589b2315041ff00b26daa60d1b90a9049d; 449fe648992f2218a7706433099da96a98a29cb2; f9ac040b5f906335215bebfe4b0e5bc2ffffdb6b; 39b258376a208c518da65d5190df7178ca8ffb79; 32588ebac6be9d4db4cee234be6e6f5703fb7576; 2f2d78714d2ad5f2b1bff9edac5c6ed1ce17b6ea). - Reliability and stability improvements: fixed race conditions in interactive drive acceptance; corrected error handling for misconfigurations during token exchange; resolved 409 conflict after auto-accept; stabilized critical tests including B2B and antivirus tests (commits 331417933e538f47c02e670f26712b40136b1128; 1cfe7b34479288f6f8a3c1f4999f1949b2f7f04f; d8800579e9dc89bc3beafb59f6edc88110a5fa74; f0fd229ff6ab25f0d8591b5d263dc5b7db3e61fa; af1f2a86bda84098f7e448683eacc53e366c8196). - External OIDC onboarding: allow user.created without hash with external OIDC (commit d36172b9dddcdaa75fd5bbe77906b8d8f22b7506). Major bugs fixed: - Avoided races during interactive drive acceptance. - BadRequest instead of InvalidParameter for create shared drive endpoint. - Return 500 on misconfiguration during token exchange. - 409 conflict after auto-accept of a shared drive. - Tests stabilization for B2B syncing and related components (B2B tests fixes, antivirus test flip). - RabbitMQ routing key fix for B2B user deletions. - Display mismatch error page for custom-instance sub type mismatches. Overall impact and accomplishments: - Significantly improved reliability and stability of drive and sharing workflows, enabling smoother collaboration for teams using shared drives. - Accelerated B2B onboarding and lifecycle management with robust synchronization between systems via RabbitMQ. - Expanded file sharing capabilities with comprehensive read/write operations, metadata access, real-time updates, and maintainable error messaging. - Strengthened deployment resilience with improved error handling and stabilized tests, reducing regressions and release risk. Technologies/skills demonstrated: - Distributed messaging (RabbitMQ) contracts and routing keys. - REST API design and robust error handling. - Real-time features and _changes streams for shared drives. - Metadata management and root handling for shared resources. - OIDC integration and user lifecycle management. - Test automation and flaky-test stabilization, plus documentation updates.

In March 2026, the Cozy Stack team delivered major feature enhancements for shared drives, strengthened messaging and session reliability, and advanced security/maintenance work, delivering business value through safer collaboration, more reliable integrations, and improved observability. Key outcomes include enhanced shared-drive sharing controls, streamlined drive creation and auditing, improved RabbitMQ resilience, Redis-backed OIDC session linkage, and targeted quality improvements that reduce flaky tests and align naming conventions. Technologies and practices demonstrated include Go tooling upgrades, CVE remediation in gRPC-Go, OIDC session management, and robust testing and logging.

February 2026 monthly summary for cozy/cozy-stack focusing on hardening multi-tenant sharing during domain migrations, secure token handling, and developer productivity. Delivered key domain-migration and sharing resilience, OIDC logout and read-only download improvements, and comprehensive dev tooling and dependency maintenance. These changes improved reliability, security, and local development throughput for contributors and operators.

Summary for 2026-01: Delivered a set of high-value features and reliability improvements in cozy/cozy-stack, with strong emphasis on SSO UX, security/test stability, and maintainability. The work spans OIDC logout UX improvements, antivirus workflow stabilization, folder-to-drive sharing, streamlined app install/uninstall, and targeted test/dependency upgrades.

December 2025 monthly summary for cozy/cozy-stack. Key features delivered include Shared Space Notifications System with localization and a notification center, Login Accessibility Enhancement, Realtime Event Processing Enhancements, and Antivirus Scanning and Security for Files. Major bugs fixed include: quick checks for only created events, more robust AV error handling, logs improvements, and removal of tautologies in AV status struct. The work improved reliability, security, accessibility, and observability; enabled proactive alerts and better user experience; lowered maintenance cost by consolidating notification flows, centralizing AV configuration to context, and improving JSON-based event handling. Technologies/skills demonstrated: localization, notification center patterns, accessibility-first design, JSONDoc support, websocket logging, antivirus integration with ClamAV, configurable workflows, error handling, structured logs, and observability through enhanced logging.

November 2025 performance summary for cozy/cozy-stack: Implemented context-aware OIDC integration and sharing inside context, enabling auto-accept for shared drives and trusted contacts. Hardened OIDC flows with improved logout handling, remote token retrieval, and a fallback path when OIDC is not configured. Stabilized sharing state by removing Bitwarden redirects. Enhanced reliability of settings and UI assets: updated phone/common settings handling, moved CSS/SVG to static assets, and added a dynamic copyright utility. Strengthened documentation and code quality via comments cleanup and concurrency/panic fixes. These changes reduce friction in authentication and sharing workflows, increase system stability, and improve maintainability.

October 2025: Delivered reliability improvements, new client capabilities, and comprehensive test coverage for cozy-stack. Focus areas included secure messaging, accurate drive-context handling, avatar settings stability, and expanding directory operations across shared drives. These changes reduce risk, accelerate tenant workflows, and demonstrate strong practical proficiency with the stack.

September 2025: Strengthened the core messaging and user lifecycle capabilities in cozy-stack, delivering a reliable event-driven backbone for integrations, improved developer experience, and measurable business value through safer, scalable workflows.

August 2025: Delivered Shared Drive File Download and Link Management in cozy-stack, enabling direct downloads from shared drives via a refactored download handler, plus new routes to create and retrieve shared-file download links, with tests for the endpoints. This work improves cross-drive collaboration, reduces manual steps for users, and adds test-covered, maintainable code.