fix(routing): learned-mcp-patterns.md loads before the first MCP write, not on every build - #182
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…e, not on every build It was in the Stage 5 baseline pack and mdl-agent's always-read rows, so every build session and MDL helper agent carried ~4,900 tokens of MCP rules, including cloud sessions where MCP does not exist. The write-mode choice is Step 0 of learned-mdl-preflight.md, which stays always-on. Stage 5 pack 74,055 -> 71,443 words; baseline 79,752 -> 77,140. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01VJgWP5vEoAsNsJYqCDMGNw
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What changed and why (one paragraph)
learned-mcp-patterns.mdwas a baseline row for Stage 5 and sat inmdl-agent's always-read table. So every build session and every MDL helper agent carried about 4,900 tokens of MCP save and handoff rules and JSON payloads, including sessions that never open Studio Pro and cloud containers where MCP does not exist. The write-mode choice (CLI vs MCP+MDL vs hand-rolled MCP) is already Step 0 oflearned-mdl-preflight.md, which stays always-on, so nothing is lost at the moment of choice. The row is nowondemand, and its trigger names the moment the file is needed: before the first MCP write in a session (mxcli --mcpexec, or apg_*/ped_*call). One TSV row changed; README, ROUTING, the runbook table and the mdl-agent template were re-rendered bybin/render-routing.sh, and the always-on sentence inCLAUDE.mdwas updated by hand.Field evidence
bin/render-routing.sh --check, before → after:Found through the context report built from
bin/context-audit.sh(#181) plus the per-stage pack sizes.Checklist
render-routing.sh --checkclean; the one fixture naming this file (test-bug12-sync.sh) plants its own hand-written table and does not read the TSV🤖 Generated with Claude Code
https://claude.ai/code/session_01VJgWP5vEoAsNsJYqCDMGNw
Generated by Claude Code