refactor: share reaction schemas and notes

docs/tools/index.md

@@ -201,8 +201,7 @@ Notes:
 - `to` accepts `channel:<id>` or `user:<id>`.
 - Polls require 2–10 answers and default to 24 hours.
 - `reactions` returns per-emoji user lists (limited to 100 per reaction).
-- `emoji=""` on `react` removes the bot's reaction(s) on the message.
-- `remove: true` on `react` removes just that emoji.
+- Reaction removal semantics: see [/tools/reactions](/tools/reactions).
 - `discord.actions.*` gates Discord tool actions; `roles` + `moderation` default to `false`.
 - `searchMessages` follows the Discord preview spec (limit max 25, channel/author filters accept arrays).
 - The tool is only exposed when the current provider is Discord.
@@ -214,8 +213,7 @@ Core actions:
 - `react` (`chatJid`, `messageId`, `emoji`, optional `remove`, `participant`, `fromMe`, `accountId`)
 
 Notes:
-- `emoji=""` removes the bot's reaction(s) on the message.
-- `remove: true` removes the bot's reaction (same effect as empty emoji).
+- Reaction removal semantics: see [/tools/reactions](/tools/reactions).
 - `whatsapp.actions.*` gates WhatsApp tool actions.
 - The tool is only exposed when the current provider is WhatsApp.
 
@@ -226,8 +224,7 @@ Core actions:
 - `react` (`chatId`, `messageId`, `emoji`, optional `remove`)
 
 Notes:
-- `emoji=""` removes the bot's reaction(s) on the message.
-- `remove: true` removes the reaction (Telegram only supports removing your own reaction).
+- Reaction removal semantics: see [/tools/reactions](/tools/reactions).
 - `telegram.actions.*` gates Telegram tool actions.
 - The tool is only exposed when the current provider is Telegram.