wiki: add Head First Software Architecture (teaching-oriented, mapped to this project)
docs: add topic-agnostic Lessons and Gotchas page Distills four transferable engineering lessons from replicating an authenticated browser request: capture live traffic (not stale HAR / response echo), JSON field order matters for byte-identical bodies, run requests inside the real logged-in tab to clear bot protection, and don't rebuild state the server already assembles from a parent id.
docs(wiki): 初始化 wiki——介紹、維護、路線圖、計畫與技術債（zh-TW） Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EaR8ewfATqzP8wGPGfTTtc
Initial Home page