SEO fixes, diary enrichment, Weekly Reporter

Set correct canonicals for 42 locales (3/30)

I generated /api pages for 42 locales and fixed canonicals so untranslated pages point to /en/api, which resolved 22 Google Search Console 404s (see https://github.com/deariary/lp/pull/139).

Rolled out enriched diary entries (4/1)

I shipped MediaGallery, LocationTimeline, and HighlightCards consuming media[], locations[], and highlights[] (merged deariary/frontend#503 and #505), fixed dark-mode inline code on the Public API page (deariary/lp#146), and published two blog posts (deariary/blog#76, #77).

GitHub Weekly Reporter came to life (4/3)

Took the project from zero to something real: HTML report renderer with themes (github-weekly-reporter#12), LLM integration for the AI narrative (#13), CI/lint/build/test + publish workflow (#27), CLI, GitHub Pages deployment with ISO week archives, a one-step Action scaffold, and kicked off feat/enrich-data-collection while setting the package scope to @deariary.