feat(lesswrong): add LessWrong adapter

[linxule]

Summary

• Adds 15 commands for LessWrong, the rationality and AI alignment research community
• All commands use the public GraphQL API — no browser or authentication required (Strategy.PUBLIC, browser: false)
• Includes shared helper module (_helpers.ts) with GraphQL client, input sanitization, tag/user resolution

Commands

Command	Description
curated	Editor's picks
frontpage	Algorithmic feed
new	Latest posts
top	Top rated (all time)
top-week / top-month / top-year	Time-filtered top posts
read	Full post content by URL or ID
comments	Top comments on a post (with post title context)
user	User profile (karma, bio, stats)
user-posts	List a user's posts
tag	Posts by tag (resolves slug → ID via tagBySlug view)
tags	List popular tags
sequences	Post collections
shortform	Quick takes

Technical notes

• Time filtering: Uses after date parameter (LessWrong's timeframe GraphQL param is silently ignored)
• Tag lookup: Two-step resolution — resolve tag slug to Mongo _id via tagBySlug view, then query tagRelevance with the real ID
• User slugs: Case-sensitive in the API; adapter normalizes to lowercase
• Error handling: CommandExecutionError for API failures, EmptyResultError for not-found with actionable hints
• Input sanitization: All user-provided strings escaped via gqlEscape() before GraphQL interpolation

Files

• src/clis/lesswrong/ — 16 TypeScript files (15 commands + _helpers.ts)
• docs/adapters/browser/lesswrong.md — adapter documentation
• docs/adapters/index.md — added to Public API Adapters table
• docs/.vitepress/config.mts — added sidebar entry

Test plan

• All GraphQL queries verified against live LessWrong API
• npx tsc --noEmit passes (exit 0)
• Time-filtered views return correctly scoped posts (not all-time)
• Tag resolution returns tag-specific posts (not unfiltered fallback)
• User slug normalization works (e.g., "Zvi" → "zvi")
• shortform and userPosts views confirmed working
• Error cases tested: nonexistent tags, invalid post IDs, wrong usernames

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