Pure mechanical split, no behavior changes. Pulls the 70+ tool handlers
out of one monolith into api.ts (PLATFORM_URL + apiCall) plus 12
tools/*.ts files grouped by domain (workspaces, agents, secrets, files,
memory, plugins, channels, delegation, schedules, approvals, discovery,
remote_agents). Each module exports its handlers and a
registerXxxTools(srv) function; createServer() wires them up.
index.ts drops from 1697 → 89 lines. Largest new file is 183 lines.
All handlers still re-exported from index.ts so existing tests that
import them via "../index.js" keep working. Build clean; jest results
unchanged from pre-refactor baseline.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>