refactor(commands): drop /provider, /plan handler, and clean up slash registry (#15047)

* refactor(commands): drop /provider and clean up slash registry

* refactor(commands): drop /plan special handler — use plain skill dispatch

website/docs/reference/slash-commands.md

@@ -38,7 +38,6 @@ Type `/` in the CLI to open the autocomplete menu. Built-in commands are case-in
 | `/agents` (alias: `/tasks`) | Show active agents and running tasks across the current session. |
 | `/background <prompt>` (alias: `/bg`) | Run a prompt in a separate background session. The agent processes your prompt independently — your current session stays free for other work. Results appear as a panel when the task finishes. See [CLI Background Sessions](/docs/user-guide/cli#background-sessions). |
 | `/btw <question>` | Ephemeral side question using session context (no tools, not persisted). Useful for quick clarifications without affecting the conversation history. |
-| `/plan [request]` | Load the bundled `plan` skill to write a markdown plan instead of executing the work. Plans are saved under `.hermes/plans/` relative to the active workspace/backend working directory. |
 | `/branch [name]` (alias: `/fork`) | Branch the current session (explore a different path) |
 
 ### Configuration
@@ -47,7 +46,6 @@ Type `/` in the CLI to open the autocomplete menu. Built-in commands are case-in
 |---------|-------------|
 | `/config` | Show current configuration |
 | `/model [model-name]` | Show or change the current model. Supports: `/model claude-sonnet-4`, `/model provider:model` (switch providers), `/model custom:model` (custom endpoint), `/model custom:name:model` (named custom provider), `/model custom` (auto-detect from endpoint). Use `--global` to persist the change to config.yaml. **Note:** `/model` can only switch between already-configured providers. To add a new provider, exit the session and run `hermes model` from your terminal. |
-| `/provider` | Show available providers and current provider |
 | `/personality` | Set a predefined personality |
 | `/verbose` | Cycle tool progress display: off → new → all → verbose. Can be [enabled for messaging](#notes) via config. |
 | `/fast [normal\|fast\|status]` | Toggle fast mode — OpenAI Priority Processing / Anthropic Fast Mode. Options: `normal`, `fast`, `status`. |
@@ -127,7 +125,6 @@ The messaging gateway supports the following built-in commands inside Telegram,
 | `/status` | Show session info. |
 | `/stop` | Kill all running background processes and interrupt the running agent. |
 | `/model [provider:model]` | Show or change the model. Supports provider switches (`/model zai:glm-5`), custom endpoints (`/model custom:model`), named custom providers (`/model custom:local:qwen`), and auto-detect (`/model custom`). Use `--global` to persist the change to config.yaml. **Note:** `/model` can only switch between already-configured providers. To add a new provider or set up API keys, use `hermes model` from your terminal (outside the chat session). |
-| `/provider` | Show provider availability and auth status. |
 | `/personality [name]` | Set a personality overlay for the session. |
 | `/fast [normal\|fast\|status]` | Toggle fast mode — OpenAI Priority Processing / Anthropic Fast Mode. |
 | `/retry` | Retry the last message. |
@@ -141,11 +138,8 @@ The messaging gateway supports the following built-in commands inside Telegram,
 | `/reasoning [level\|show\|hide]` | Change reasoning effort or toggle reasoning display. |
 | `/voice [on\|off\|tts\|join\|channel\|leave\|status]` | Control spoken replies in chat. `join`/`channel`/`leave` manage Discord voice-channel mode. |
 | `/rollback [number]` | List or restore filesystem checkpoints. |
-| `/snapshot [create\|restore <id>\|prune]` (alias: `/snap`) | Create or restore state snapshots of Hermes config/state. |
 | `/background <prompt>` | Run a prompt in a separate background session. Results are delivered back to the same chat when the task finishes. See [Messaging Background Sessions](/docs/user-guide/messaging/#background-sessions). |
-| `/plan [request]` | Load the bundled `plan` skill to write a markdown plan instead of executing the work. Plans are saved under `.hermes/plans/` relative to the active workspace/backend working directory. |
 | `/reload-mcp` (alias: `/reload_mcp`) | Reload MCP servers from config. |
-| `/reload` | Reload `.env` variables into the running session. |
 | `/yolo` | Toggle YOLO mode — skip all dangerous command approval prompts. |
 | `/commands [page]` | Browse all commands and skills (paginated). |
 | `/approve [session\|always]` | Approve and execute a pending dangerous command. `session` approves for this session only; `always` adds to permanent allowlist. |
@@ -158,8 +152,8 @@ The messaging gateway supports the following built-in commands inside Telegram,
 
 ## Notes
 
-- `/skin`, `/tools`, `/toolsets`, `/browser`, `/config`, `/cron`, `/skills`, `/platforms`, `/paste`, `/image`, `/terminal-setup`, `/statusbar`, and `/plugins` are **CLI-only** commands.
+- `/skin`, `/snapshot`, `/gquota`, `/reload`, `/tools`, `/toolsets`, `/browser`, `/config`, `/cron`, `/skills`, `/platforms`, `/paste`, `/image`, `/terminal-setup`, `/statusbar`, and `/plugins` are **CLI-only** commands.
 - `/verbose` is **CLI-only by default**, but can be enabled for messaging platforms by setting `display.tool_progress_command: true` in `config.yaml`. When enabled, it cycles the `display.tool_progress` mode and saves to config.
 - `/sethome`, `/update`, `/restart`, `/approve`, `/deny`, and `/commands` are **messaging-only** commands.
-- `/status`, `/background`, `/voice`, `/reload-mcp`, `/rollback`, `/snapshot`, `/debug`, `/fast`, and `/yolo` work in **both** the CLI and the messaging gateway.
+- `/status`, `/background`, `/voice`, `/reload-mcp`, `/rollback`, `/debug`, `/fast`, and `/yolo` work in **both** the CLI and the messaging gateway.
 - `/voice join`, `/voice channel`, and `/voice leave` are only meaningful on Discord.

website/docs/user-guide/features/skills.md

@@ -32,7 +32,7 @@ Every installed skill is automatically available as a slash command:
 /excalidraw
 ```
 
-The bundled `plan` skill is a good example of a skill-backed slash command with custom behavior. Running `/plan [request]` tells Hermes to inspect context if needed, write a markdown implementation plan instead of executing the task, and save the result under `.hermes/plans/` relative to the active workspace/backend working directory.
+The bundled `plan` skill is a good example. Running `/plan [request]` loads the skill's instructions, telling Hermes to inspect context if needed, write a markdown implementation plan instead of executing the task, and save the result under `.hermes/plans/` relative to the active workspace/backend working directory.
 
 You can also interact with skills through natural conversation:
 

website/docs/user-guide/messaging/index.md

@@ -120,7 +120,6 @@ hermes gateway status --system         # Linux only: inspect the system service
 |---------|-------------|
 | `/new` or `/reset` | Start a fresh conversation |
 | `/model [provider:model]` | Show or change the model (supports `provider:model` syntax) |
-| `/provider` | Show available providers with auth status |
 | `/personality [name]` | Set a personality |
 | `/retry` | Retry the last message |
 | `/undo` | Remove the last exchange |

website/docs/user-guide/skills/bundled/autonomous-ai-agents/autonomous-ai-agents-hermes-agent.md

@@ -265,7 +265,6 @@ Type these during an interactive chat session.
 ```
 /config              Show config (CLI)
 /model [name]        Show or change model
-/provider            Show provider info
 /personality [name]  Set personality
 /reasoning [level]   Set reasoning (none|minimal|low|medium|high|xhigh|show|hide)
 /verbose             Cycle: off → new → all → verbose