docs: comprehensive docs audit — fix 12 stale/missing items across 10 pages (#3618)

Fixes found by auditing docs against recent PRs/commits:

Critical (misleading):
- hooks.md: Remove stale 'planned — not yet wired' markers for 4 hooks
  that are now active (#3542). Add correct callback signatures.
- security.md: Update tirith verdict behavior — block verdicts now go
  through approval flow instead of hard-blocking (#3428). Add pkill/killall
  self-termination guard and gateway-run backgrounding patterns (#3593).

New feature docs:
- configuration.md: Add tool_use_enforcement section with value table
  (auto/true/false/list) from #3551/#3528.
- configuration.md: Expand auxiliary config with per-task timeouts
  (compression 120s, web_extract 30s, approval 30s) from #3597.
- api-server.md: Add /v1/health alias, Security Headers section,
  CORS details (Max-Age, SSE headers, Idempotency-Key) from
  #3572/#3573/#3576/#3580/#3530.

Stale/incomplete:
- configuration.md: Fix Alibaba model name qwen-plus -> qwen3.5-plus (#3484).
- environment-variables.md: Specify actual DashScope default URL.
- cli-commands.md: Add alibaba to --provider list.
- fallback-providers.md: Add Alibaba/DashScope to provider table.
- email.md: Document noreply/automated sender filtering (#3606).
- toolsets-reference.md: Add 4 missing platform toolsets — matrix,
  mattermost, dingtalk, api-server (#3583).
- skills.md: List default GitHub taps including garrytan/gstack (#3605).

website/docs/reference/toolsets-reference.md

@@ -19,10 +19,14 @@ Toolsets are named bundles of tools that you can enable with `hermes chat --tool
 | `file` | core | `patch`, `read_file`, `search_files`, `write_file` |
 | `hermes-acp` | platform | `browser_back`, `browser_click`, `browser_close`, `browser_console`, `browser_get_images`, `browser_navigate`, `browser_press`, `browser_scroll`, `browser_snapshot`, `browser_type`, `browser_vision`, `delegate_task`, `execute_code`, `memory`, `patch`, `process`, `read_file`, `search_files`, `session_search`, `skill_manage`, `skill_view`, `skills_list`, `terminal`, `todo`, `vision_analyze`, `web_extract`, `web_search`, `write_file` |
 | `hermes-cli` | platform | `browser_back`, `browser_click`, `browser_close`, `browser_console`, `browser_get_images`, `browser_navigate`, `browser_press`, `browser_scroll`, `browser_snapshot`, `browser_type`, `browser_vision`, `clarify`, `cronjob`, `delegate_task`, `execute_code`, `ha_call_service`, `ha_get_state`, `ha_list_entities`, `ha_list_services`, `honcho_conclude`, `honcho_context`, `honcho_profile`, `honcho_search`, `image_generate`, `memory`, `mixture_of_agents`, `patch`, `process`, `read_file`, `search_files`, `send_message`, `session_search`, `skill_manage`, `skill_view`, `skills_list`, `terminal`, `text_to_speech`, `todo`, `vision_analyze`, `web_extract`, `web_search`, `write_file` |
+| `hermes-api-server` | platform | _(same as hermes-cli)_ |
+| `hermes-dingtalk` | platform | _(same as hermes-cli)_ |
 | `hermes-discord` | platform | _(same as hermes-cli)_ |
 | `hermes-email` | platform | _(same as hermes-cli)_ |
 | `hermes-gateway` | composite | Union of all messaging platform toolsets |
 | `hermes-homeassistant` | platform | _(same as hermes-cli)_ |
+| `hermes-matrix` | platform | _(same as hermes-cli)_ |
+| `hermes-mattermost` | platform | _(same as hermes-cli)_ |
 | `hermes-signal` | platform | _(same as hermes-cli)_ |
 | `hermes-slack` | platform | _(same as hermes-cli)_ |
 | `hermes-sms` | platform | _(same as hermes-cli)_ |