chore: remove stale artifacts and no-op CLI

[mattzcarey]

Summary

• remove completed discovery artifacts that were superseded by shipped code and current docs
• remove the published agents CLI whose init, dev, deploy, and mcp commands only printed "not implemented yet"
• drop the CLI build entry and direct yargs dependencies
• preserve the useful Node bundle and Vite-plugin tests under src/node-tests

Removed artifacts:

• the AI SDK v7 migration worktree report; the migration shipped in feat: update AI SDK to v7 #1922
• the pre-implementation Voice and Messengers idea documents
• the obsolete experimental/voice.md page, which taught deleted import paths and is replaced by docs/voice/index.md
• the stale deploy-churn investigation log; both PRs it described as pending landed, while the runnable harness remains

experimental/inference-buffer is intentionally retained because experimental/forever-chat still uses its service binding and replay path.

CLI behavior change

agents@0.21.0 publishes an agents binary, but all four commands are placeholders that exit successfully without doing any work. This PR removes that misleading binary rather than continuing to advertise commands that do nothing. Use the documented C3 starter, Vite and Wrangler commands, and MCP APIs instead.

This carries an agents minor changeset.

Validation

• package tarball has no bin metadata or dist/cli files
• pnpm run build
• pnpm run check
• pnpm run test:node in packages/agents (15 tests)
• pnpm exec nx affected -t test --base=origin/main (22 projects, all green)

[changeset-bot]

🦋 Changeset detected

Latest commit: 73ad4cd

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
agents	Minor
@cloudflare/agent-think	Patch

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[pkg-pr-new]

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agents

npm i https://pkg.pr.new/cloudflare/agents@2161

@cloudflare/ai-chat

npm i https://pkg.pr.new/cloudflare/agents/@cloudflare/ai-chat@2161

@cloudflare/channels

npm i https://pkg.pr.new/cloudflare/agents/@cloudflare/channels@2161

@cloudflare/codemode

npm i https://pkg.pr.new/cloudflare/agents/@cloudflare/codemode@2161

hono-agents

npm i https://pkg.pr.new/cloudflare/agents/hono-agents@2161

@cloudflare/shell

npm i https://pkg.pr.new/cloudflare/agents/@cloudflare/shell@2161

@cloudflare/think

npm i https://pkg.pr.new/cloudflare/agents/@cloudflare/think@2161

@cloudflare/voice

npm i https://pkg.pr.new/cloudflare/agents/@cloudflare/voice@2161

@cloudflare/worker-bundler

npm i https://pkg.pr.new/cloudflare/agents/@cloudflare/worker-bundler@2161

commit: 73ad4cd