Server integration for TTL/LRU toolset eviction (follow-up to #14)

[coderabbitai[bot]]

Background

This issue is a follow-up to PR #18 and issue #14. While the core TTL/LRU eviction functionality has been implemented in the ToolGateController, the server integration components are still missing.

Missing Server Integration Requirements

The following server-side changes need to be implemented in src/mcp/server.ts:

1. Mark Usage on Tool Calls

• Call markUsed(toolName) on each tools/call to update last-used timestamps
• This ensures the TTL tracking accurately reflects tool usage

2. Periodic Maintenance

• Schedule periodic calls to sweepExpiredToolsets() to remove expired toolsets
• Call enforceLRUCap() after enabling new toolsets to maintain capacity limits
• Emit tools.listChanged events after evictions to sync tool list changes

3. Discovery Tools Registration

• Register gate/pin_toolset discovery tool for pinning toolsets
• Register gate/unpin_toolset discovery tool for unpinning toolsets
• These tools should allow clients to protect toolsets from auto-disable

References

• Original issue: #14
• Implementation PR: #18
• Related comment: https://github.com/KHAEntertainment/claude-flow/pull/18#issuecomment-IC_kwDOO07yic61L2Lh

Acceptance Criteria

• [ ] `markUsed()) called on every tool execution in server.ts
• [ ] Periodic sweeping and LRU enforcement implemented
• [ ] Discovery tools for pin/unpin operations registered
• [ ] tools.listChanged events emitted after evictions
• [ ] Integration tested to ensure eviction works end-to-end

[KHAEntertainment]

@ruvnet appologies, for some reason @Coderabbitai posts issues from my fork into your main. Please disregard.