chore: add new email tempalte

[qinluhe]

Summary by Sourcery

New Features:

• Add HTML email template for mention notifications with avatar support, header, preheader, CTA button, and social links in the footer

[sourcery-ai]

Reviewer's Guide

Adds a complete HTML email template for user mention notifications, utilizing front-matter metadata, dynamic placeholders, a responsive table-based layout with inline styling, a CTA button, and a social media-enabled footer.

File-Level Changes

Change	Details	Files
Introduce email template for user mention notifications	Add front-matter metadata (title, preheader, bodyClass) Embed hidden preview text and dynamic placeholders (userName, contentName, timestamp, contentPath, actionUrl) Construct responsive table layout with inline CSS and logo header Implement styled CTA button and social media footer with support link	email_template/src/templates/notification_template_with_avatar.html

---

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[sourcery-ai]

Hey @qinluhe - I've reviewed your changes and they look great!

Prompt for AI Agents

Please address the comments from this code review:
## Individual Comments

### Comment 1
<location> `email_template/src/templates/notification_template_with_avatar.html:36` </location>
<code_context>
+        >
+          <tr>
+            <td align="center" style="padding-bottom: 24px">
+              <img
+                src="{{ cdnBaseUrl }}images/appflowy.png"
+                width="64"
+                height="64"
</code_context>

<issue_to_address>
The avatar image is hardcoded and does not use a user-specific avatar.

Consider replacing the static image source with a dynamic variable like {{ userAvatarUrl }} to display the correct user's avatar.
</issue_to_address>

<suggested_fix>
<<<<<<< SEARCH
                src="{{ cdnBaseUrl }}images/appflowy.png"
=======
                src="{{ userAvatarUrl }}"
>>>>>>> REPLACE

</suggested_fix>

### Comment 2
<location> `email_template/src/templates/notification_template_with_avatar.html:183` </location>
<code_context>
+                  />
+                </a>
+                <a
+                  href="https://x.com/appflowy"
+                  style="
+text-decoration: none;
+                    display: inline-block;
+                    margin: 0 10px 0 0;
+                  "
+                >
+                  <img
+                    src="{{ cdnBaseUrl }}images/twitter.png"
+                    width="20"
+                    height="20"
</code_context>

<issue_to_address>
The icon for X (formerly Twitter) uses a 'twitter.png' image.

Consider updating the icon to match X's current branding to avoid confusion.

Suggested implementation:

```
                  <img
                    src="{{ cdnBaseUrl }}images/x.png"
                    width="20"
                    height="20"

```

```
                    src="{{ cdnBaseUrl }}images/x.png"
                    width="20"
                    height="20"

```

```
                    height="20"
                    alt="X"

```

Make sure to add the new `x.png` icon to your CDN at the path `images/x.png` to ensure the image loads correctly.
</issue_to_address>

### Comment 3
<location> `email_template/src/templates/notification_template_with_avatar.html:24` </location>
<code_context>
+      color: #000000;
+    "
+  >
+    <tr>
+      <td align="center" valign="top">
+        <table
+          width="600"
</code_context>

<issue_to_address>
The outer table uses a fixed width of 600px, which may not be mobile-friendly.

Consider using width: 100% with a max-width to enhance mobile compatibility and prevent rendering issues on smaller screens.
</issue_to_address>

<suggested_fix>
<<<<<<< SEARCH
        <table
          width="600"
          border="0"
          cellpadding="0"
          cellspacing="0"
          bgcolor="#ffffff"
          style="border-radius: 12px; padding: 32px; margin: 0 auto"
        >
=======
        <table
          width="100%"
          border="0"
          cellpadding="0"
          cellspacing="0"
          bgcolor="#ffffff"
          style="border-radius: 12px; padding: 32px; margin: 0 auto; max-width: 600px;"
        >
>>>>>>> REPLACE

</suggested_fix>

---

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[sourcery-ai]

suggestion: The avatar image is hardcoded and does not use a user-specific avatar.

Consider replacing the static image source with a dynamic variable like {{ userAvatarUrl }} to display the correct user's avatar.

Suggested change

	src="{{ cdnBaseUrl }}images/appflowy.png"
	src="{{ userAvatarUrl }}"

[sourcery-ai]

suggestion: The icon for X (formerly Twitter) uses a 'twitter.png' image.

Consider updating the icon to match X's current branding to avoid confusion.

Suggested implementation:

                  <img
                    src="{{ cdnBaseUrl }}images/x.png"
                    width="20"
                    height="20"

                    src="{{ cdnBaseUrl }}images/x.png"
                    width="20"
                    height="20"

                    height="20"
                    alt="X"

Make sure to add the new x.png icon to your CDN at the path images/x.png to ensure the image loads correctly.

[sourcery-ai]

suggestion: The outer table uses a fixed width of 600px, which may not be mobile-friendly.

Consider using width: 100% with a max-width to enhance mobile compatibility and prevent rendering issues on smaller screens.

Suggested change

<table

width="600"

border="0"

cellpadding="0"

cellspacing="0"

bgcolor="#ffffff"

style="border-radius: 12px; padding: 32px; margin: 0 auto"

>

<table

width="100%"

border="0"

cellpadding="0"

cellspacing="0"

bgcolor="#ffffff"

style="border-radius: 12px; padding: 32px; margin: 0 auto; max-width: 600px;"

>