Merge pull request #13 from zuqini/zuqini/opt-merge-refactor

refactor: collapse opts merging to single authoritative path

Merge pull request #10 from zuqini/zuqini/event-fire-missing-data

fix: forward ev.data, validate buffer, chain dependencies, and dedupl…

Merge pull request #8 from zuqini/zuqini/lazy-loading-bug

fix: lazy-loaded plugins not fully activating

docs: tighten wording in features and target audience sections

docs: add Extensions section with zshow.nvim