docs(remote): Add Symphony IR protocol (receiver + transmitter)

content/components/remote_receiver.md

@@ -64,6 +64,7 @@ Multiple remote receivers can be configured as a list of dict definitions within
   - **roomba**: Decode and dump Roomba infrared codes.
   - **samsung**: Decode and dump Samsung infrared codes.
   - **samsung36**: Decode and dump Samsung36 infrared codes.
+  - **symphony**: Decode and dump Symphony infrared codes.
   - **sony**: Decode and dump Sony infrared codes.
   - **toshiba_ac**: Decode and dump Toshiba AC infrared codes.
   - **mirage**: Decode and dump Mirage infrared codes.
@@ -267,6 +268,10 @@ To enable signal demodulation, configure the signal carrier frequency and duty c
   Sony remote code has been decoded. A variable `x` of type {{< apistruct "remote_base::SonyData" "remote_base::SonyData" >}}
   is passed to the automation for use in lambdas.
 
+- **on_symphony** (*Optional*, [Automation](#automation)): An automation to perform when a
+  Symphony remote code has been decoded. A variable `x` of type {{< apistruct "remote_base::SymphonyData" "remote_base::SymphonyData" >}}
+  is passed to the automation for use in lambdas.
+
 - **on_toshiba_ac** (*Optional*, [Automation](#automation)): An automation to perform when a
   Toshiba AC remote code has been decoded. A variable `x` of type {{< apistruct "remote_base::ToshibaAcData" "remote_base::ToshibaAcData" >}}
   is passed to the automation for use in lambdas.
@@ -567,6 +572,11 @@ Remote code selection (exactly one of these has to be included):
   - **data** (**Required**, int): The Sony code to trigger on, see dumper output for more info.
   - **nbits** (*Optional*, int): The number of bits of the remote code. Defaults to `12`.
 
+- **symphony**: Trigger on a decoded Symphony remote code with the given data.
+
+  - **data** (**Required**, int): The Symphony code to trigger on, see dumper output for more info.
+  - **nbits** (**Required**, int): The number of bits of the remote code. Typical values: `8`, `12`, or `16`.
+
 - **toshiba_ac**: Trigger on a decoded Toshiba AC remote code with the given data.
 
   - **rc_code_1** (**Required**, int): The remote control code to trigger on, see dumper output for more details.

content/components/remote_transmitter.md

@@ -923,6 +923,32 @@ on_...:
 - **command** (**Required**, int): The Samsung36 command to send, see dumper output for more details.
 - All other options from [Remote Transmitter Actions](#remote_transmitter-transmit_action).
 
+{{< anchor "remote_transmitter-transmit_symphony" >}}
+
+### `remote_transmitter.transmit_symphony` **Action**
+
+This [action](#config-action) sends a Symphony infrared remote code to a remote transmitter.
+It transmits constant bit-time frames with a footer gap. Physical Symphony remotes typically
+send the same frame twice separated by a ~35 ms gap. Use `command_repeats` to control how
+many identical frames are sent; defaults to 2.
+
+```yaml
+on_...:
+  - remote_transmitter.transmit_symphony:
+      data: 0x0E88
+      nbits: 12
+      command_repeats: 2
+```
+
+#### Configuration variables
+
+- **data** (**Required**, int): The Symphony code to send, see dumper output for more info.
+- **nbits** (**Required**, int): The number of bits to send. Typical values: `8`, `12`, or `16`.
+- **command_repeats** (*Optional*, int): Number of times to send the same frame in one transmission.
+  Defaults to `2` to match typical handsets.
+
+- All other options from [Remote Transmitter Actions](#remote_transmitter-transmit_action).
+
 {{< anchor "remote_transmitter-transmit_sony" >}}
 
 ### `remote_transmitter.transmit_sony` **Action**