Update CLI chat session bridge (#697)

* feat: add CLI chat sessions with Python agent bridge

Introduce a new CLI chat mode that connects Web UI directly to Hermes
Agent's AIAgent via a Python bridge subprocess and Socket.IO, bypassing
the API Server /v1/responses path. Supports streaming, slash commands
(/new, /undo, /retry, /branch, /compress, /save, /title), interrupt,
and steer.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* feat: update CLI chat session bridge

* fix: extend agent bridge startup timeouts

* docs: update bridge chat session design

* feat: align bridge compression and provider registry

* chore: bump version to 0.5.20

---------

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

scripts/build-server.mjs

@@ -1,7 +1,7 @@
 import * as esbuild from 'esbuild'
 import { resolve, dirname } from 'path'
 import { fileURLToPath } from 'url'
-import { readFileSync } from 'fs'
+import { cpSync, mkdirSync, readFileSync } from 'fs'
 
 const rootDir = resolve(dirname(fileURLToPath(import.meta.url)), '..')
 const pkg = JSON.parse(readFileSync(resolve(rootDir, 'package.json'), 'utf-8'))
@@ -23,3 +23,10 @@ await esbuild.build({
   treeShaking: true,
   logLevel: 'info',
 })
+
+const bridgeOutDir = resolve(rootDir, 'dist/server/agent-bridge')
+mkdirSync(bridgeOutDir, { recursive: true })
+cpSync(
+  resolve(rootDir, 'packages/server/src/services/hermes/agent-bridge/hermes_bridge.py'),
+  resolve(bridgeOutDir, 'hermes_bridge.py'),
+)