feat: build out discord support agent (#4)

### Explanation

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### Issue

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### Attestations

- [x] I have read and agree to the [Code of Conduct](https://docs.nhcarrigan.com/community/coc/)
- [x] I have read and agree to the [Community Guidelines](https://docs.nhcarrigan.com/community/guide/).
- [x] My contribution complies with the [Contributor Covenant](https://docs.nhcarrigan.com/dev/covenant/).

### Dependencies

- [x] I have pinned the dependencies to a specific patch version.

### Style

- [x] I have run the linter and resolved any errors.
- [x] My pull request uses an appropriate title, matching the conventional commit standards.
- [x] My scope of feat/fix/chore/etc. correctly matches the nature of changes in my pull request.

### Tests

- [ ] My contribution adds new code, and I have added tests to cover it.
- [ ] My contribution modifies existing code, and I have updated the tests to reflect these changes.
- [ ] All new and existing tests pass locally with my changes.
- [ ] Code coverage remains at or above the configured threshold.

### Documentation

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### Versioning

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Reviewed-on: #4
Co-authored-by: Naomi Carrigan <commits@nhcarrigan.com>
Co-committed-by: Naomi Carrigan <commits@nhcarrigan.com>

bot/src/commands/about.ts

@@ -0,0 +1,90 @@
+/**
+ * @copyright nhcarrigan
+ * @license Naomi's Public License
+ * @author Naomi Carrigan
+ */
+import {
+  TextDisplayBuilder,
+  SeparatorBuilder,
+  SeparatorSpacingSize,
+  ContainerBuilder,
+  ButtonBuilder,
+  ButtonStyle,
+  ActionRowBuilder,
+  MessageFlags,
+} from "discord.js";
+import { errorHandler } from "../utils/errorHandler.js";
+import type { Command } from "../interfaces/command.js";
+
+/**
+ * Handles the `/about` command interaction.
+ * @param _hikari - Hikari's Discord instance (unused).
+ * @param interaction - The command interaction payload from Discord.
+ */
+// eslint-disable-next-line max-lines-per-function -- It's mostly components.
+export const about: Command = async(_hikari, interaction) => {
+  try {
+    const components = [
+      new ContainerBuilder().
+        addTextDisplayComponents(
+          new TextDisplayBuilder().setContent("# About Hikari"),
+        ).
+        addTextDisplayComponents(
+          new TextDisplayBuilder().setContent(
+            // eslint-disable-next-line stylistic/max-len -- Big boi string.
+            "Hi there~! I am Hikari, an AI agent specifically tailored to help you understand and use NHCarrigan's products!",
+          ),
+        ).
+        addSeparatorComponents(
+          new SeparatorBuilder().
+            setSpacing(SeparatorSpacingSize.Small).
+            setDivider(true),
+        ).
+        addTextDisplayComponents(
+          new TextDisplayBuilder().setContent("## What can I do?"),
+        ).
+        addTextDisplayComponents(
+          new TextDisplayBuilder().setContent(
+            // eslint-disable-next-line stylistic/max-len -- Big boi string.
+            "To get started, you will need to purchase the user subscription from my Discord store. Then you can send me a direct message to ask questions about NHCarrigan's work.\n\nIf you cannot find our DM channel, run the `/dm` command and I will ping you!",
+          ),
+        ).
+        addSeparatorComponents(
+          new SeparatorBuilder().
+            setSpacing(SeparatorSpacingSize.Small).
+            setDivider(true),
+        ).
+        addTextDisplayComponents(
+          new TextDisplayBuilder().setContent("## What if I need more help?"),
+        ).
+        addTextDisplayComponents(
+          new TextDisplayBuilder().setContent(
+            // eslint-disable-next-line stylistic/max-len -- Big boi string.
+            "My deepest apologies! I am not perfect, though I do try my best. If you have a question that I just cannot answer, you should save yourself some time and reach out to the team via one of the support channels!",
+          ),
+        ),
+      new ActionRowBuilder<ButtonBuilder>().addComponents(
+        new ButtonBuilder().
+          setStyle(ButtonStyle.Link).
+          setLabel("Discord Server").
+          setURL("https://chat.nhcarrigan.com"),
+        new ButtonBuilder().
+          setStyle(ButtonStyle.Link).
+          setLabel("Forum").
+          setURL("https://forum.nhcarrigan.com"),
+      ),
+    ];
+    await interaction.reply({
+      components: components,
+      flags:      MessageFlags.IsComponentsV2,
+    });
+  } catch (error) {
+    await errorHandler(error, "about command");
+    await interaction.reply({
+      content:
+        // eslint-disable-next-line stylistic/max-len -- Big boi string.
+        "An error occurred while processing your request. Please try again later.",
+      ephemeral: true,
+    });
+  }
+};

bot/src/commands/dm.ts

@@ -0,0 +1,38 @@
+/**
+ * @copyright nhcarrigan
+ * @license Naomi's Public License
+ * @author Naomi Carrigan
+ */
+
+import { errorHandler } from "../utils/errorHandler.js";
+import type { Command } from "../interfaces/command.js";
+
+/**
+ * Handles the `/dm` command interaction.
+ * @param _hikari - Hikari's Discord instance (unused).
+ * @param interaction - The command interaction payload from Discord.
+ */
+export const dm: Command = async(_hikari, interaction) => {
+  try {
+    await interaction.deferReply({
+      ephemeral: true,
+    });
+    const dmSent = await interaction.user.send({
+      content:
+        "Hello! You can now ask me questions directly in this DM channel.",
+    });
+    await dmSent.delete();
+    await interaction.editReply({
+      content:
+        // eslint-disable-next-line stylistic/max-len -- Big boi string.
+        "I have highlighted your DM channel. You can now ask me questions directly there!",
+    });
+  } catch (error) {
+    await errorHandler(error, "dm command");
+    await interaction.editReply({
+      content:
+        // eslint-disable-next-line stylistic/max-len -- Big boi string.
+        "Oh dear! It looks like I might not be able to DM you. You may need to install me directly to your user account!",
+    });
+  }
+};