feat(wellfound): add browser job adapter

[gauravsaxena1997]

Summary

This PR adds a new browser-backed wellfound adapter for OpenCLI.

Wellfound is a startup-focused recruiting platform, formerly AngelList Talent, where candidates browse startup roles, inspect company/job details, and apply either directly on Wellfound or through an external company website. It is especially useful for early-stage, remote, full-time, contract, and freelance startup opportunities, but the current OpenCLI adapter set did not have first-class support for reading or acting on Wellfound job search results.

Why this is needed

Job-search automation needs more than scraping a search page. For Wellfound, a useful adapter needs to:

• read the logged-in Browse jobs feed and preserve stable job URLs
• inspect detail pages/dialogs before scoring or applying
• understand remote policy, job type, compensation, equity, skills, recruiter activity, and company status
• distinguish Wellfound-native apply flows from jobs that require a company website application
• keep application commands guarded so accidental submissions do not happen
• support daily shortlist workflows for candidates who want a small set of high-fit jobs instead of raw search output

This adapter gives OpenCLI that Wellfound-specific surface area while keeping writes behind explicit --execute flags.

Commands added

• opencli wellfound jobs
  • Reads visible jobs from the logged-in Wellfound Browse UI.
• opencli wellfound top-picks
  • Scores Browse results into daily application targets.
• opencli wellfound daily
  • Alias for top-picks.
• opencli wellfound job-detail <job-url>
  • Reads one job detail page/dialog, including description, compensation, remote policy, skills, company metadata, and apply mode.
• opencli wellfound filters
  • Reads or updates visible Browse filters. Updates require --execute.
• opencli wellfound apply <job-url>
  • Dry-runs or submits a Wellfound-native application. Submission requires --execute and external company applications are detected but not submitted.

Safety model

• Read commands are browser-backed and operate on the logged-in Wellfound UI.
• Mutating filter changes require --execute.
• Applications are dry-run by default.
• apply supports --expected-title and --expected-company guards.
• Company website applications return the external URL instead of submitting external forms.
• Already-applied state is detected and reported.
• Multiline application messages are normalized before filling the Wellfound application field.

Documentation

Added docs/adapters/browser/wellfound.md and registered Wellfound in the adapter index.

Tests

• npm run test:adapter -- clis/wellfound/wellfound.test.js
• npm run build-manifest