feat!: remove the discover command and Discover API integration

[nirsha-brd]

Removes brightdata discover / bdata discover and its integration with the Bright Data Discover API (POST/GET https://api.brightdata.com/discover).

This is the inverse of #3, which added the command.

Changes

File	Change
src/commands/discover.ts	deleted
src/types/discover.ts	deleted — verified nothing outside the discover command imported it
src/__tests__/commands/discover.test.ts	deleted
src/index.ts	dropped the import and the program.addCommand(discover_command) registration
src/__tests__/utils/help.test.ts	dropped the discover case from the "every customer-facing command has Examples in --help" coverage table
README.md	removed the command-table row, the table-of-contents entry, and the ### discover reference section
package.json	0.3.3 → 0.4.0

src/__tests__/utils/help.test.ts is worth a look in review — it was added after #3, so it is not in that PR's file list, but it imports discover_command and would fail to compile without this change.

Verification

• pnpm run type-check — clean, exit 0

• pnpm run build (tsc) — clean, exit 0

• pnpm test — no new failures. This suite is already red on main in a Windows environment; I captured a baseline before making any change and the failing set is byte-for-byte identical:

  	Test files	Tests	Failing files	Failing tests
  baseline (main)	29	360	5	8
  this branch	28	344	5	8

  The deltas are exactly the removed discover.test.ts (1 file, 16 tests). The same 8 tests fail before and after, all in browser/ipc, browser/lifecycle, commands/browser, utils/config and utils/mcp-config — socket, daemon-spawn and POSIX file-permission assertions that do not hold on Windows. None are related to this change.

• node dist/index.js --help — discover is gone; all 15 remaining commands still register.

• Repo-wide search for discover (excluding node_modules) returns zero matches.

Migration

Use brightdata search to find sources and brightdata scrape to read them.

Note for reviewers

I used a minor bump (0.3.3 → 0.4.0) since the package is pre-1.0 and there is no CHANGELOG in this repo to record the removal. Say the word if you would rather it be something else, or want a CHANGELOG started.

Out of scope

brightdata/skills still ships a discover-api skill whose CLI section documents bdata discover, and its live-research and rag-pipeline skills are built on Discover. Those need a follow-up PR.