diff --git a/.github/site/coverpage.md b/.github/site/coverpage.md
index c08233a..f98cf48 100644
--- a/.github/site/coverpage.md
+++ b/.github/site/coverpage.md
@@ -1,5 +1,5 @@
 
-![logo](./ext/blue.svg)
+![logo](ext/blue.svg)
 
 # Ghostbird
 
diff --git a/.github/site/index.html b/.github/site/index.html
index 3ba9cfd..f01114a 100644
--- a/.github/site/index.html
+++ b/.github/site/index.html
@@ -7,10 +7,15 @@
   <meta name="description" content="Ghostbird is a Thunderbird add-on that connects your text editor with Thunderbird's email compose window, allowing you to edit the message in the text editor.">
   <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0">
   <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/docsify@4.13.1/lib/themes/vue.min.css">
-  <link rel="icon" href="ext/blue.svg" />
+  <link rel="icon" href="ext/blue.svg">
   <script type="module" src="index.mjs"></script>
 </head>
 <body>
+  <nav>
+    <a href="https://github.com/exteditor/ghostbird/">&#x1faba; GitHub</a>
+    <a href="#/doc/faq">&#x2753; FAQ</a>
+    <a href="https://translate.kagi.com/exteditor.github.io/ghostbird/">&#x1f30d; Translation</a>
+  </nav>
   <div id="app"></div>
 </body>
 </html>
diff --git a/.github/site/index.mjs b/.github/site/index.mjs
index f784a52..470e788 100644
--- a/.github/site/index.mjs
+++ b/.github/site/index.mjs
@@ -1,21 +1,48 @@
 import mermaid from "https://cdn.jsdelivr.net/npm/mermaid@11.12.0/+esm";
 import "https://cdn.jsdelivr.net/npm/docsify@4.13.1/+esm";
 
+// @ts-check
+
 mermaid.initialize({ startOnLoad: false });
 
-// see https://docsify.js.org/#/configuration
+/**
+ * Build a URL to a GitHub resource
+ * @param {string} type The type of resource ('blob' or 'tree')
+ * @param {string} path Absolute path (/ points to the repository root) to the resource
+ * @returns {string} The URL to the resource
+ */
+const urlFor = (type, path) => `https://github.com/exteditor/ghostbird/${type}/main/${encodeURIComponent(path.slice(1))}`;
+
+/**
+ * Build a Markdown text that redirects to a URL
+ * @param {string} url The URL to redirect to
+ * @returns {string} a Markdown text
+ */
+const redirectTo = (url) => `Redirecting to ${url}...\n\n<script>\nlocation.href = "${url}"${'</'}script>`;
 
-const footer = `____
+/**
+ * Add a footer to the Markdown text
+ * @param {string} text The Markdown text
+ * @returns {string} Markdown text with footer added
+ */
+const addFooter = (text, vm) => `${text}
 
-Powered by [Docsify](https://docsify.js.org/)
+____
 
-[▲ Back to Top](#)
+[▲ Back to Top](#top)
+<div align="right">
+Last Update: <a href="${urlFor('blob', vm.route.file)}">{docsify-updated}</a><br>
+Powered by <a href="https://docsify.js.org/">Docsify</a>
+</div>
 `;
 
+// see https://docsify.js.org/#/configuration
+
 window.$docsify = {
   name: 'Ghostbird \u{1faba}\u{1f4eb}\u{1f47b}',
   repo: 'exteditor/ghostbird',
   logo: 'ext/blue.svg',
+  formatUpdated: '{YYYY}-{MM}-{DD}',
   relativePath: true,
   executeScript: true,
   homepage: "homepage.md",
@@ -25,12 +52,16 @@ window.$docsify = {
   themeColor: '#0b9dd6',
   routes: {
     ['/README'](route) {
-      let url = `https://github.com/exteditor/ghostbird/blob/main/${encodeURIComponent(route.slice(1))}.md`
-      return `Redirecting to ${url}...\n\n<script>\nlocation.href = "${url}"${'</'}script>`
+      let url = urlFor('blob', `${route}.md`)
+      return redirectTo(url)
+    },
+    ['/[-._/a-zA-Z]*[.][a-zA-Z]+$'](route) {
+      let url = urlFor('blob', route)
+      return redirectTo(url)
     },
-    ['/[-._/a-zA-Z]*[.][a-zA-Z]+'](route) {
-      let url = `https://github.com/exteditor/ghostbird/blob/main/${encodeURIComponent(route.slice(1))}`
-      return `Redirecting to ${url}...\n\n<script>\nlocation.href = "${url}"${'</'}script>`
+    ['/[-._/a-zA-Z]+/$'](route) {
+      let url = urlFor('tree', route)
+      return redirectTo(url)
     },
   },
   search: [
@@ -53,8 +84,8 @@ window.$docsify = {
     }
   },
   plugins: [
-    (hook, _vm) => {
-      hook.beforeEach(html => html + footer);
+    (hook, vm) => {
+      hook.beforeEach((text) => addFooter(text, vm));
       hook.doneEach(() => mermaid.run());
     },
   ],
diff --git a/doc/building.md b/doc/building.md
index 343a577..916bbee 100644
--- a/doc/building.md
+++ b/doc/building.md
@@ -53,7 +53,7 @@ js & copied_ext_files & messages & manifest --> web_ext[["web-ext"]] --> xpi["Ma
     - Compiling bundled JavaScript files into `dist/ext/`.
 - Running `yarn build-xpi` creates a zip archive named `dist/ghostbird-{version}.xpi`.
    - [The `web-ext` tool](https://github.com/mozilla/web-ext#web-ext) does the actual work.
-- The usual `yarn build` runs both of the above after running the linter and tests.
+- The usual `yarn build`, which is used by the CI, runs both of the above after running the linter and tests.
 - `yarn watch` is an alias for `yarn build-js --watch`, which runs the build continuously.
 
 ## Build modes
@@ -111,5 +111,5 @@ The build script assumes four use cases, each using a different source of versio
 
 - Building with `ext/manifest.json` should produce identical results to one from CI in terms of file names and their contents.
 - However, they will have different timestamps and file order, meaning Ghostbird builds are not strictly reproducible.
-- It would be possible to wipe `mtime`s to produce strictly identical zips, but this was considered pointless as AMO repackages the zip when signing the add-on anyway.
+- It would be possible to wipe `mtime`s to produce strictly identical zips, but this was considered pointless as ~~AMO repackages the zip when signing the add-on anyway.~~ **Edit:** It turns out Firefox add-ons are repackaged while Thunderbird add-ons are not, so there may be a point to this after all. PRs welcome.
 - See [the issue page for the `web-ext` tool](https://github.com/mozilla/web-ext/issues/2381#issuecomment-1075667618) for details.
diff --git a/doc/design.md b/doc/design.md
index 29222ca..600cc53 100644
--- a/doc/design.md
+++ b/doc/design.md
@@ -174,6 +174,8 @@ This is how user actions are handled:
 * [Barrelsby](https://github.com/bencoveney/barrelsby)  generates `index.ts`.
   * See [building.md](./building.md) for details on build script internals.
 
+* We rely on GitHub Actions for CI and releases.
+
 ## Structure of the code<a id="structure"></a>
 
 The code loosely follows the [Ports and Adapters architecture](https://8thlight.com/insights/a-color-coded-guide-to-ports-and-adapters) and adheres to the [Dependency Inversion Principle](https://en.wikipedia.org/wiki/Dependency_inversion_principle).
@@ -188,21 +190,21 @@ The code loosely follows the [Ports and Adapters architecture](https://8thlight.
 
 The source code is located in the `src/` directory. The main files are:
 
-- `src/root/background.ts`: A background script that manages the WebSocket connection to the GhostText server and relays messages between the compose script and the server. Bundled as `background.js`.
-- `src/root/compose.ts`: A compose script that adds a button to the mail compose window. Bundled as `compose.js`.
-- `src/root/options.ts`: An options page for configuring settings such as the server URL and text editor to use. Bundled as `options.js` and used by `ext/options.html`.
+- [`src/root/background.ts`][backgroundts]: A background script that manages the WebSocket connection to the GhostText server and relays messages between the compose script and the server. Bundled as `background.js`.
+- [`src/root/compose.ts`][composets]: A compose script that adds a button to the mail compose window. Bundled as `compose.js`.
+- [`src/root/options.ts`][optionsts]: An options page for configuring settings such as the server URL and text editor to use. Bundled as `options.js` and used by `ext/options.html`.
 
 Other directories are:
 
-- `src/app-background/`: Infrastructure of `background.ts` that handles Thunderbird events.
-- `src/app-compose/`: Infrastructure of `compose.ts` that handles Thunderbird events.
-- `src/app-options/`: Infrastructure of `options.ts` that handles Thunderbird events.
-- `src/ghosttext-session/`: Main module of the add-on implementing the protocol.
-- `src/ghosttext-runner/`: Facilitator that works together with `ghosttext-session` which feeds events into it and execute decisions made.
-- `src/ghosttext-adaptor/`: Helpers of `ghosttext-runner`.
-- `src/test/`: Test code.
-- `src/thunderbird/`: Wrapper of the Thunderbird MailExtension API.
-- `src/util/`: Utility modules used by multiple modules.
+- [`src/app-background/`](../src/app-background/): Infrastructure of [`background.ts`][backgroundts] that handles Thunderbird events.
+- [`src/app-compose/`](../src/app-compose/): Infrastructure of [`compose.ts`][composets] that handles Thunderbird events.
+- [`src/app-options/`](../src/app-options/): Infrastructure of [`options.ts`][optionsts] that handles Thunderbird events.
+- [`src/ghosttext-session/`](../src/ghosttext-session/): Main module of the add-on implementing the protocol.
+- [`src/ghosttext-runner/`](../src/ghosttext-runner/): Facilitator that works together with `ghosttext-session` by feeding events into it and execute decisions made.
+- [`src/ghosttext-adaptor/`](../src/ghosttext-adaptor/): Helpers of `ghosttext-runner`.
+- [`src/test/`](../src/test/): Test code.
+- [`src/thunderbird/`](../src/thunderbird/): Wrapper of the Thunderbird MailExtension API.
+- [`src/util/`](../src/util/): Utility modules used by multiple modules.
 
 ### Module Dependencies
 
@@ -274,7 +276,7 @@ options_api & background_api & compose_api -.->|indirectly calls| thunderbird
 
 * `api.ts` defines subsets of the Thunderbird API used by the module in the folder.
 * These interfaces are implemented by `thunderbird/` modules.
-* This is to isolate the impact of future Thunderbird API changes to `src/thunderbird/` modules only.
+* This is to isolate the impact of future Thunderbird API changes to `thunderbird/` modules only.
 
 ```mermaid
 flowchart TB
@@ -299,7 +301,7 @@ ghostbird_runner -->|uses| ghostbird_session
 
 TL;DR: `root` module contains entry point and the [Composition Root][ploeh].
 
-* `root/startup/startup_{background,compose,options}.ts` is used at the toplevel modules, namely `background.ts`, `compose.ts`, and `options.ts`. It initializes classes.
+* [`root/startup/startup_*.ts`][startupdir] are used at the toplevel modules, namely [`background.ts`][backgroundts], [`compose.ts`][composets], and [`options.ts`][optionsts]. It initializes classes.
 * All the non-root classes in the codebase are either:
   * A) instantiated by `startup*()`, or
   * B) instantiated directly with `new` operator by instances of (A).
@@ -317,7 +319,7 @@ TL;DR: `root` module contains entry point and the [Composition Root][ploeh].
 * A class may define `static aliases: string[] | string` to have the other name.
   * Name clashes will result in error at startup, except ones passed to classes with `wantArray = true`.
 * Use of automatic instantiation must be restricted to `root/` to make the code easier to follow.
-* `test/startup.test.ts` contains tests to verify that all classes registered can be instantiated successfully.
+* [`test/startup.test.ts`](../src/test/startup.test.ts) contains tests to verify that all classes registered can be instantiated successfully.
 * See [FAQ](./faq-architectural.md) for some design decisions and justification.
 
 ```mermaid
@@ -358,3 +360,7 @@ instantiate_class --> need_instance
 [ploeh]: https://blog.ploeh.dk/2019/06/17/composition-root-location/
 [wiki]: https://github.com/exteditor/ghostbird/wiki
 [so]: https://stackoverflow.com/q/73206468/188256
+[startupdir]: ../src/root/startup/
+[backgroundts]: ../src/root/background.ts
+[composets]: ../src/root/compose.ts
+[optionsts]: ../src/root/options.ts
diff --git a/doc/faq.md b/doc/faq.md
index 0a13543..f3a473f 100644
--- a/doc/faq.md
+++ b/doc/faq.md
@@ -87,12 +87,12 @@
 
 ### Why not use External Editor Revived as a base?
 
-(For those who don't know: [External Editor Revived by @Frederick888](https://github.com/Frederick888/external-editor-revived) is an add-on for Thunderbird that lets you edit email text in an external text editor, which works in recent Thunderbird versions and is actively maintained)
+(For those who don't know: [External Editor Revived by @Frederick888](https://github.com/Frederick888/external-editor-revived) is an add-on for Thunderbird that lets you edit email text in an external text editor, which works in recent Thunderbird versions and is well-maintained)
 
 * I started working on Ghostbird while mostly offline. Had I known about ERR's existence, Ghostbird wouldn't exist now!
 * ERR works using [Native Messaging](https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Native_messaging), which is the only way to launch external process in recent Thunderbird API. It requires a companion app to be installed and registered as a Native Messaging Host. See [ERR's Wiki pages](https://github.com/Frederick888/external-editor-revived/wiki) for details.
 * Reasons to continue developing Ghostbird? I think GhostText's live updating functionality is pretty (for now; there is no fundamental reason ERR can't do the same).
-* That said, I think you should try ERR before using Ghostbird, which is still in alpha, as ERR is more mature and already on [AMO][revived].
+* That said, I think you should try ERR before using Ghostbird, which is still in beta, as ERR is more mature and already listed on [AMO][revived] as a stable extension.
 
   [![External Editor Revived](https://raw.githubusercontent.com/thunderbird/webext-support/refs/heads/master/images/get-the-addon.svg)][revived]
 
@@ -106,7 +106,7 @@
 
 ### Why Yarn?
 
-* I love cats, and Yarn has [a cat logo](https://github.com/yarnpkg/assets).
+* I love cats, and Yarn has [a cat logo](https://github.com/yarnpkg/assets#yarn-assets).
 
 ### How do you build this add-on?
 
diff --git a/package.json b/package.json
index d4afaf8..8d6afab 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,9 @@
   "engines": {
     "thunderbird": ">= 128"
   },
-  "homepage": "https://github.com/exteditor/ghostbird/",
+  "homepage": "https://exteditor.github.io/ghostbird/",
+  "bugs": "https://github.com/exteditor/ghostbird/issues/",
+  "funding": "https://give.thunderbird.net/",
   "repository": {
     "type": "git",
     "url": "github:exteditor/ghostbird"
