fix: simplify dev workflow and drop unused scripts

[jesse23]

Summary

• Collapse dual dev/CLI workflows in AGENTS.md to a single bun run build flow
• Remove dev and dev:node scripts from package.json (renamed prod/prod:node to server/server:node)
• Add debugging section to README.md — build emits source maps so bun --inspect run dist/server/index.js works out of the box
• Add comments to startServer() explaining runtime detection and reuse

Test plan

• bun run build && webtty stop ; webtty run main works end-to-end
• bun --inspect run dist/server/index.js launches server with source maps

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR streamlines the local development and runtime workflow by standardizing on the built dist/ output, renaming/removing related npm scripts, and documenting debugging via source maps.

Changes:

• Rename/remove package.json scripts to prefer a single built-server workflow (server / server:node) and drop dev variants.
• Improve shutdown behavior messaging by closing WebSocket clients with an explicit code/reason.
• Add documentation for debugging the built server with source maps and clarify runtime detection/spawn behavior in the CLI.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
src/server/index.ts	Sends explicit WebSocket close code/reason on shutdown paths.
src/cli/http.ts	Adds comments and spawns the server using the current runtime with TS/JS entry detection.
package.json	Removes dev scripts and renames prod* scripts to server*.
README.md	Adds a debugging section documenting source maps + inspector usage.
AGENTS.md	Updates the documented development workflow command snippet.

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[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Comments suppressed due to low confidence (1)

src/server/index.ts:19

• The /api/server/stop shutdown path exits only via httpServer.close(() => process.exit(0)). httpServer.close() waits for all open connections to end, so a stuck/slow WebSocket close handshake (or any keep-alive connection) can cause webtty stop to hang indefinitely. Consider reusing the SIGINT pattern here as well (exit callback + short fallback timeout) so stop is reliably bounded.

  handleRequest(req, res, distPath, wasmPath, () => {
    for (const session of sessionRegistry.values()) {
      session.pty?.kill();
      for (const client of session.clients) client.close(1001, 'server stopped');
    }
    wss.close();
    httpServer.close(() => process.exit(0));
  });

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