docs: fix documentation inconsistencies across reference and user guides

- toolsets-reference: add browser_console to browser + all platform toolsets,
  add missing hermes-acp, hermes-sms, messaging toolsets, correct hermes-gateway
  as composite, deduplicate platform toolset listings
- tools-reference: add missing vision and web toolset sections
- slash-commands: fix /new+/reset as alias (not separate commands), add /stop to
  CLI section (available in both CLI and gateway), add /plugins command, fix Notes
  section about messaging-only vs CLI-only
- environment-variables: fix HERMES_MAX_ITERATIONS default (90 not 60), add
  DEEPSEEK_API_KEY/BASE_URL, OPENCODE_ZEN/GO keys, TAVILY_API_KEY,
  GITHUB_TOKEN, HERMES_EPHEMERAL_SYSTEM_PROMPT
- configuration: remove duplicate Alibaba Cloud row, add OpenCode Zen/Go providers
- cli-commands: add missing providers to --provider list (opencode-zen,
  opencode-go, ai-gateway, kilocode, alibaba)
- quickstart: add OpenCode Zen and OpenCode Go to provider table

Co-authored-by: Test <test@test.com>

website/docs/reference/environment-variables.md

@@ -41,6 +41,12 @@ All variables go in `~/.hermes/.env`. You can also set them with `hermes config
 | `ANTHROPIC_TOKEN` | Manual or legacy Anthropic OAuth/setup-token override |
 | `DASHSCOPE_API_KEY` | Alibaba Cloud DashScope API key for Qwen models ([modelstudio.console.alibabacloud.com](https://modelstudio.console.alibabacloud.com/)) |
 | `DASHSCOPE_BASE_URL` | Custom DashScope base URL (default: international endpoint) |
+| `DEEPSEEK_API_KEY` | DeepSeek API key for direct DeepSeek access ([platform.deepseek.com](https://platform.deepseek.com/api_keys)) |
+| `DEEPSEEK_BASE_URL` | Custom DeepSeek API base URL |
+| `OPENCODE_ZEN_API_KEY` | OpenCode Zen API key — pay-as-you-go access to curated models ([opencode.ai](https://opencode.ai/auth)) |
+| `OPENCODE_ZEN_BASE_URL` | Override OpenCode Zen base URL |
+| `OPENCODE_GO_API_KEY` | OpenCode Go API key — $10/month subscription for open models ([opencode.ai](https://opencode.ai/auth)) |
+| `OPENCODE_GO_BASE_URL` | Override OpenCode Go base URL |
 | `CLAUDE_CODE_OAUTH_TOKEN` | Explicit Claude Code token override if you export one manually |
 | `HERMES_MODEL` | Preferred model name (checked before `LLM_MODEL`, used by gateway) |
 | `LLM_MODEL` | Default model name (fallback when not set in config.yaml) |
@@ -71,6 +77,7 @@ For native Anthropic auth, Hermes prefers Claude Code's own credential files whe
 | `PARALLEL_API_KEY` | AI-native web search ([parallel.ai](https://parallel.ai/)) |
 | `FIRECRAWL_API_KEY` | Web scraping ([firecrawl.dev](https://firecrawl.dev/)) |
 | `FIRECRAWL_API_URL` | Custom Firecrawl API endpoint for self-hosted instances (optional) |
+| `TAVILY_API_KEY` | Tavily API key for AI-native web search, extract, and crawl ([app.tavily.com](https://app.tavily.com/home)) |
 | `BROWSERBASE_API_KEY` | Browser automation ([browserbase.com](https://browserbase.com/)) |
 | `BROWSERBASE_PROJECT_ID` | Browserbase project ID |
 | `BROWSER_USE_API_KEY` | Browser Use cloud browser API key ([browser-use.com](https://browser-use.com/)) |
@@ -83,6 +90,7 @@ For native Anthropic auth, Hermes prefers Claude Code's own credential files whe
 | `GROQ_BASE_URL` | Override the Groq OpenAI-compatible STT endpoint |
 | `STT_OPENAI_MODEL` | Override the OpenAI STT model (default: `whisper-1`) |
 | `STT_OPENAI_BASE_URL` | Override the OpenAI-compatible STT endpoint |
+| `GITHUB_TOKEN` | GitHub token for Skills Hub (higher API rate limits, skill publish) |
 | `HONCHO_API_KEY` | Cross-session user modeling ([honcho.dev](https://honcho.dev/)) |
 | `TINKER_API_KEY` | RL training ([tinker-console.thinkingmachines.ai](https://tinker-console.thinkingmachines.ai/)) |
 | `WANDB_API_KEY` | RL training metrics ([wandb.ai](https://wandb.ai/)) |
@@ -211,7 +219,7 @@ For native Anthropic auth, Hermes prefers Claude Code's own credential files whe
 
 | Variable | Description |
 |----------|-------------|
-| `HERMES_MAX_ITERATIONS` | Max tool-calling iterations per conversation (default: 60) |
+| `HERMES_MAX_ITERATIONS` | Max tool-calling iterations per conversation (default: 90) |
 | `HERMES_TOOL_PROGRESS` | Deprecated compatibility variable for tool progress display. Prefer `display.tool_progress` in `config.yaml`. |
 | `HERMES_TOOL_PROGRESS_MODE` | Deprecated compatibility variable for tool progress mode. Prefer `display.tool_progress` in `config.yaml`. |
 | `HERMES_HUMAN_DELAY_MODE` | Response pacing: `off`/`natural`/`custom` |
@@ -221,6 +229,7 @@ For native Anthropic auth, Hermes prefers Claude Code's own credential files whe
 | `HERMES_API_TIMEOUT` | LLM API call timeout in seconds (default: `900`) |
 | `HERMES_EXEC_ASK` | Enable execution approval prompts in gateway mode (`true`/`false`) |
 | `HERMES_BACKGROUND_NOTIFICATIONS` | Background process notification mode in gateway: `all` (default), `result`, `error`, `off` |
+| `HERMES_EPHEMERAL_SYSTEM_PROMPT` | Ephemeral system prompt injected at API-call time (never persisted to sessions) |
 
 ## Session Settings