docs: add http-utils, provider-config, server-utils to architecture map

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: lanmower

CLAUDE.md

@@ -60,6 +60,9 @@ lib/routes-runs.js     Runs HTTP route handlers (POST /api/runs, runs search, ru
 lib/routes-scripts.js  Scripts/cancel/resume/inject HTTP route handlers (conversation scripts, run-script, stop-script, cancel, resume, inject)
 lib/routes-agent-actions.js  Agent auth and update HTTP route handlers (POST /api/agents/:id/auth, POST /api/agents/:id/update)
 lib/routes-auth-config.js  Auth config HTTP route handlers (GET /api/auth/configs, POST /api/auth/save-config)
+lib/http-utils.js       HTTP utility functions (parseBody, acceptsEncoding, compressAndSend, sendJSON)
+lib/provider-config.js  Provider config helpers (buildSystemPrompt, maskKey, getProviderConfigs, saveProviderConfig, PROVIDER_CONFIGS)
+lib/server-utils.js     Server utility functions (logError, errLogPath, makeCleanupExecution, makeGetModelsForAgent)
 lib/routes-debug.js    Debug/backup/restore/ws-stats HTTP route handlers
 lib/routes-threads.js  Thread CRUD HTTP route handlers (ACP v0.2.3 thread API)
 lib/ws-protocol.js     WebSocket RPC router (WsRouter class)