quick-fix

Lightweight bug-fix workflow - for fixes already decided on with no design space (small bugs, minor adjustments, post-plan tweaks): locate root cause with spec back-lookup, confirm one question at a time, fix under TDD, optional acceptance. Splits on contract impact to avoid spec drift; escalates to requirement-analysis on contract-crossing / cross-module / new-dependency signals. Not for new features or anything with design space (use requirement-analysis), nor for undecided ideas (use exploring). / 轻量 bug 修复工作流——已决定要修、无设计空间的小修复（小 bug、小调整、计划执行后的小问题）时使用：定位根因（含 spec 反查）、逐题校对、TDD 修复、可选验收。按契约影响分流以规避 spec 漂移；根因涉及跨 spec 契约/跨模块/新依赖时建议升级 requirement-analysis。不适用于新功能或任何有设计空间的需求（用 requirement-analysis），也不适用于尚未决定要不要做的想法（用 exploring）。