feat: graduate Host Console to Community admins (#1669)

* feat: graduate Host Console to Community admins

Make Host Console available to Community and Admiral admins (system:console), add host-console-community for mixed fleets, and keep opaque API tokens off the host shell.

* docs: document Host Console deep links

Cover root and stack-scoped Console URLs, correct the phone treatment note, and pin parse/build round-trips in senchoRoute tests.

* fix: bind Host Console socket to the resolved node

Treat unresolved activeNode as loading, target the WebSocket with an explicit nodeId, and wait for stack deep-link hydration so the shell cannot open on the wrong node or compose root. Add regression coverage for node/stack retargeting and fail-closed directory resolution.

* fix: harden Host Console node binding, audit acting_as, and console_session tokens

Reject unknown or malformed nodeIds before spawning a PTY. Record hub operators in audit_log.acting_as for remote console_session bridges. Path-scope and one-time-consume console_session JWTs so Host Console mints cannot open container exec or be replayed.

* test: expect acting_as in audit CSV export header

Align the CSV export assertion with the P0-2B acting_as column added to audit log exports.

docs/features/overview.mdx

@@ -210,7 +210,7 @@ When you manage nodes running different Sencho versions, the dashboard detects e
 
 ### Host console
 
-Open an interactive terminal on the host OS directly in the browser with full xterm.js emulation and color support. No SSH client required. Limited-availability surface when present; admin role required. [Learn more →](/features/host-console)
+Open an interactive terminal on the host OS directly in the browser with full xterm.js emulation and color support. No SSH client required. Admin role required. [Learn more →](/features/host-console)
 
 ## Security and access