docs: align channels naming

docs/cli/message.md

@@ -1,13 +1,13 @@
 ---
-summary: "CLI reference for `clawdbot message` (send + provider actions)"
+summary: "CLI reference for `clawdbot message` (send + channel actions)"
 read_when:
   - Adding or modifying message CLI actions
-  - Changing outbound provider behavior
+  - Changing outbound channel behavior
 ---
 
 # `clawdbot message`
 
-Single outbound command for sending messages and provider actions
+Single outbound command for sending messages and channel actions
 (Discord/Slack/Telegram/WhatsApp/Signal/iMessage/MS Teams).
 
 ## Usage
@@ -16,9 +16,9 @@ Single outbound command for sending messages and provider actions
 clawdbot message <subcommand> [flags]
 ```
 
-Provider selection:
-- `--provider` required if more than one provider is configured.
-- If exactly one provider is configured, it becomes the default.
+Channel selection:
+- `--channel` required if more than one channel is configured.
+- If exactly one channel is configured, it becomes the default.
 - Values: `whatsapp|telegram|discord|slack|signal|imessage|msteams`
 
 Target formats (`--to`):
@@ -32,7 +32,7 @@ Target formats (`--to`):
 
 ## Common flags
 
-- `--provider <name>`
+- `--channel <name>`
 - `--account <id>`
 - `--json`
 - `--dry-run`
@@ -170,13 +170,13 @@ Target formats (`--to`):
 
 Send a Discord reply:
 ```
-clawdbot message send --provider discord \
+clawdbot message send --channel discord \
   --to channel:123 --message "hi" --reply-to 456
 ```
 
 Create a Discord poll:
 ```
-clawdbot message poll --provider discord \
+clawdbot message poll --channel discord \
   --to channel:123 \
   --poll-question "Snack?" \
   --poll-option Pizza --poll-option Sushi \
@@ -185,13 +185,13 @@ clawdbot message poll --provider discord \
 
 Send a Teams proactive message:
 ```
-clawdbot message send --provider msteams \
+clawdbot message send --channel msteams \
   --to conversation:19:abc@thread.tacv2 --message "hi"
 ```
 
 Create a Teams poll:
 ```
-clawdbot message poll --provider msteams \
+clawdbot message poll --channel msteams \
   --to conversation:19:abc@thread.tacv2 \
   --poll-question "Lunch?" \
   --poll-option Pizza --poll-option Sushi
@@ -199,12 +199,12 @@ clawdbot message poll --provider msteams \
 
 React in Slack:
 ```
-clawdbot message react --provider slack \
+clawdbot message react --channel slack \
   --to C123 --message-id 456 --emoji "✅"
 ```
 
 Send Telegram inline buttons:
 ```
-clawdbot message send --provider telegram --to @mychat --message "Choose:" \
+clawdbot message send --channel telegram --to @mychat --message "Choose:" \
   --buttons '[ [{"text":"Yes","callback_data":"cmd:yes"}], [{"text":"No","callback_data":"cmd:no"}] ]'
 ```