fix: tighten router switch_project keywords to stop false positives#61
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The router's switch_project prompt examples used generic Chinese verbs (用/use, 打开/open, 换/change), so normal work instructions like "用 pandas 处理数据" or "打开这个文件" were misclassified as project switches. Restrict positive examples to explicit switch words only, add an inline disambiguation rule and FORWARD counter-examples, and cover the behavior with deterministic fast-path cases plus a live haiku test. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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Jun 18, 2026
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Summary
switch_projectbecause the prompt's switch examples used generic verbs (用/use, 打开/open, 换/change). E.g.用 pandas 处理数据or打开这个文件would trigger a project switch.switch_projectpositive examples to explicit switch words only (switch to/change project to/切换到/切到/切换项目到), added an inline disambiguation rule (bare 用/打开/换 + noun is NOT a switch), and added three FORWARD counter-examples with those trigger verbs in work context.Test Plan
test_fast_classify_no_matchwith the boundary phrases (deterministic guard)test_router_live_prompt_classification) exercising the real haiku classifier — skipped withoutANTHROPIC_API_KEYuv run pytest tests/test_router.py— 37 passed, ruff cleanCloses #60