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* 🔧 refactor: Simplify MCP selection logic in useMCPSelect hook - Removed redundant useEffect for setting ephemeral agent when MCP values change. - Integrated ephemeral agent update directly into the MCP value change handler, improving code clarity and reducing unnecessary re-renders. - Updated dependencies in the effect hook to ensure proper state management. Why Effect 2 Was Added (PR #9528) PR #9528 was a refactor that migrated MCP state from useLocalStorage hooks to Jotai atomWithStorage. Before that PR, useLocalStorage handled bidirectional sync between localStorage and Recoil in one abstraction. After the migration, the two useEffect hooks were introduced to bridge Jotai ↔ Recoil: - Effect 1 (Recoil → Jotai): When ephemeralAgent.mcp changes externally, update the Jotai atom (which drives the UI dropdown) - Effect 2 (Jotai → Recoil): When mcpValues changes, push it back to ephemeralAgent.mcp (which is read at submission time) Effect 2 was needed because in that PR's design, setMCPValues only wrote to Jotai — it never touched Recoil. Effect 2 was the bridge to propagate user selections into the ephemeral agent. Why Removing It Is Correct All user-initiated MCP changes go through setMCPValues. The callers are in useMCPServerManager: toggleServerSelection, batchToggleServers, OAuth success callbacks, and access revocation. Our change puts the Recoil write directly in that callback, so all these paths are covered. All external changes go through Recoil, handled by Effect 1 (kept). Model spec application (applyModelSpecEphemeralAgent), agent template application after submission, and BadgeRowContext initialization all write directly to ephemeralAgentByConvoId. Effect 1 watches ephemeralAgent?.mcp and syncs those into the Jotai atom for the UI. There is no code path where mcpValues changes without going through setMCPValues or Effect 1. The only other source is atomWithStorage's getOnInit reading from localStorage on mount — that's just restoring persisted state and is harmless (overwritten by Effect 1 if the ephemeral agent has values). Additional Benefits - Eliminates the race condition. Effect 2 fired on mount with Jotai's stale default ([]), overwriting ephemeralAgent.mcp that had been set by a model spec. Our change prevents that because the imperative sync only fires on explicit user action. - Eliminates infinite loop risk. The old bidirectional two-effect approach relied on isEqual/JSON.stringify checks to break cycles. The new unidirectional-reactive (Effect 1) + imperative (setMCPValues) approach has no such risk. - Effect 1's enhancements are preserved. The mcp_clear sentinel handling and configuredServers filtering (both added after PR #9528) continue to work correctly. * ✨ feat: Add artifacts support to model specifications and ephemeral agents - Introduced `artifacts` property in the model specification and ephemeral agent types, allowing for string or boolean values. - Updated `applyModelSpecEphemeralAgent` to handle artifacts, defaulting to 'default' if true or an empty string if not specified. - Enhanced localStorage handling to store artifacts alongside other agent properties, improving state management for ephemeral agents. * 🔧 refactor: Update BadgeRowContext to improve localStorage handling - Modified the logic to only apply values from localStorage that were actually stored, preventing unnecessary overrides of the ephemeral agent. - Simplified the setting of ephemeral agent values by directly using initialValues, enhancing code clarity and maintainability. * 🔧 refactor: Enhance ephemeral agent handling in BadgeRowContext and model spec application - Updated BadgeRowContext to apply localStorage values only for tools not already set in ephemeralAgent, improving state management. - Modified useApplyModelSpecEffects to reset the ephemeral agent when no spec is provided but specs are configured, ensuring localStorage defaults are applied correctly. - Streamlined the logic for applying model spec properties, enhancing clarity and maintainability. * refactor: Isolate spec and non-spec tool/MCP state with environment-keyed storage Spec tool state (badges, MCP) and non-spec user preferences previously shared conversation-keyed localStorage, causing cross-pollination when switching between spec and non-spec models. This introduces environment-keyed storage so each context maintains independent persisted state. Key changes: - Spec active: no localStorage persistence — admin config always applied fresh - Non-spec (with specs configured): tool/MCP state persisted to __defaults__ key - No specs configured: zero behavior change (conversation-keyed storage) - Per-conversation isolation preserved for existing conversations - Dual-write on user interaction updates both conversation and environment keys - Remove mcp_clear sentinel in favor of null ephemeral agent reset * refactor: Enhance ephemeral agent initialization and MCP handling in BadgeRowContext and useMCPSelect - Updated BadgeRowContext to clarify the handling of localStorage values for ephemeral agents, ensuring proper initialization based on conversation state. - Improved useMCPSelect tests to accurately reflect behavior when setting empty MCP values, ensuring the visual selection clears as expected. - Introduced environment-keyed storage logic to maintain independent state for spec and non-spec contexts, enhancing user experience during context switching. * test: Add comprehensive tests for useToolToggle and applyModelSpecEphemeralAgent hooks - Introduced unit tests for the useToolToggle hook, covering dual-write behavior in non-spec mode and per-conversation isolation. - Added tests for applyModelSpecEphemeralAgent, ensuring correct application of model specifications and user overrides from localStorage. - Enhanced test coverage for ephemeral agent state management during conversation transitions, validating expected behaviors for both new and existing conversations. |
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