docs: regex search / Nix flake / restore dev docs (#2341)

docs/Developer Guide/Developer Guide/Building and deployment/Nix flake.md

@@ -0,0 +1,76 @@
+# Nix flake
+Since TriliumNext 0.94.1, the desktop and server applications can be built using [Nix](https://nixos.org/).
+
+## System requirements
+
+Installation of Nix on Mac or Linux ([download page](https://nixos.org/download/)). About 3-4 gigabytes of additional storage space, for build artifacts.
+
+## Run directly
+
+Using [nix run](https://nix.dev/manual/nix/stable/command-ref/new-cli/nix3-run.html), the desktop app can be started as: `nix run github:TriliumNext/Notes/v0.95.0`
+
+Running the server requires explicitly specifying the desired package: `nix run github:TriliumNext/Notes/v0.95.0#server`
+
+Instead of a version (`v0.95.0` above), you can also specify a commit hash (or a branch name). This makes it easy to test development builds.
+
+## Install on NixOS
+
+Add to your `flake.nix`:
+
+```
+{
+  inputs = {
+    nixpkgs.url = # ...;
+    trilium-notes = {
+      url = "github:TriliumNext/Notes/v0.95.0";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs =
+    {
+      self,
+      # ...
+      trilium-notes,
+      ...
+    }:
+    {
+      nixosConfigurations = {
+        "nixos" = nixpkgs.lib.nixosSystem {
+          system = "x86_64-linux";
+          modules = [
+            ./configuration.nix
+          ];
+          specialArgs = {
+            inherit
+              trilium-notes
+              ;
+          };
+        };
+      };
+    };
+}
+
+```
+
+Add to your `configuration.nix`:
+
+```
+{
+  # ...
+  trilium-notes,
+  ...
+}:
+
+{
+  # ...
+
+  services.trilium-server.package = trilium-notes.packages.x86_64-linux.server;
+
+  environment.systemPackages = [
+    trilium-notes.packages.x86_64-linux.desktop
+  ];
+}
+```
+
+The flake aims to be compatible with the latest NixOS stable and unstable.

docs/Developer Guide/Developer Guide/Development and architecture/Build information.md

@@ -1,4 +1,4 @@
 # Build information
 *   Provides context about when the build was made and the corresponding Git revision.
 *   The information is displayed to the client when going in the about dialog.
-*   The build information is hard-coded in `src/services/build.ts`. This file is generated automatically via `npm run update-build-info` which itself is run automatically whenever making a build in the CI, or a [local delivery](../Build%20deliveries%20locally.md).
+*   The build information is hard-coded in `src/services/build.ts`. This file is generated automatically via `npm run update-build-info` which itself is run automatically whenever making a build in the CI, or a [local delivery](../Old%20documentation/Build%20deliveries%20locally.md).

docs/Developer Guide/Developer Guide/Development and architecture/Icons.md

@@ -17,7 +17,7 @@ These are stored in `images`:
 
 ## App icons
 
-<figure class="table"><table><thead><tr><th>Name</th><th>Resolution</th><th>Description</th></tr></thead><tbody><tr><td><code>ios/apple-touch-icon.png</code></td><td>180x180</td><td>Used as <code>apple-touch-icon</code>, but only in <code>login.ejs</code> and <code>set_password.ejs</code> for some reason.</td></tr><tr><td><code>mac/icon.icns</code></td><td>512x512</td><td>Provided as <code>--icon</code> to <code>electron-packager</code> for <code>mac-arm64</code> and <code>mac-x64</code> <a href="../Build%20deliveries%20locally.md">builds</a>.</td></tr><tr><td><code>png/128x128.png</code></td><td>128x128</td><td>Used in <code>linux-x64</code> <a href="../Build%20deliveries%20locally.md">build</a>, to provide an <code>icon.png</code>.</td></tr><tr><td><code>png/256x256-dev.png</code></td><td>256x256</td><td>Used by the Electron window icon, if in dev mode.</td></tr><tr><td><code>png/256x256.png</code></td><td>Used by the Electron window icon, if not in dev mode.</td></tr><tr><td><code>win/icon.ico</code></td><td><ul><li>ICO 16x16</li><li>ICO 32x32</li><li>ICO 48x48</li><li>ICO 64x64</li><li>ICO 128x128</li><li>PNG 256x256</li></ul></td><td><ul><li>Used by the <code>win-x64</code> <a href="../Build%20deliveries%20locally.md">build</a>.</li><li>Used by Squirrel Windows installer for: setup icon, app icon, control panel icon</li><li>Used as the favicon.</li></ul></td></tr><tr><td><code>win/setup-banner.gif</code></td><td>640x480</td><td>Used by the Squirrel Windows installer during the installation process. Has only one frame.</td></tr></tbody></table></figure>
+<figure class="table"><table><thead><tr><th>Name</th><th>Resolution</th><th>Description</th></tr></thead><tbody><tr><td><code>ios/apple-touch-icon.png</code></td><td>180x180</td><td>Used as <code>apple-touch-icon</code>, but only in <code>login.ejs</code> and <code>set_password.ejs</code> for some reason.</td></tr><tr><td><code>mac/icon.icns</code></td><td>512x512</td><td>Provided as <code>--icon</code> to <code>electron-packager</code> for <code>mac-arm64</code> and <code>mac-x64</code> <a href="../Old%20documentation/Build%20deliveries%20locally.md">builds</a>.</td></tr><tr><td><code>png/128x128.png</code></td><td>128x128</td><td>Used in <code>linux-x64</code> <a href="../Old%20documentation/Build%20deliveries%20locally.md">build</a>, to provide an <code>icon.png</code>.</td></tr><tr><td><code>png/256x256-dev.png</code></td><td>256x256</td><td>Used by the Electron window icon, if in dev mode.</td></tr><tr><td><code>png/256x256.png</code></td><td>Used by the Electron window icon, if not in dev mode.</td></tr><tr><td><code>win/icon.ico</code></td><td><ul><li>ICO 16x16</li><li>ICO 32x32</li><li>ICO 48x48</li><li>ICO 64x64</li><li>ICO 128x128</li><li>PNG 256x256</li></ul></td><td><ul><li>Used by the <code>win-x64</code> <a href="../Old%20documentation/Build%20deliveries%20locally.md">build</a>.</li><li>Used by Squirrel Windows installer for: setup icon, app icon, control panel icon</li><li>Used as the favicon.</li></ul></td></tr><tr><td><code>win/setup-banner.gif</code></td><td>640x480</td><td>Used by the Squirrel Windows installer during the installation process. Has only one frame.</td></tr></tbody></table></figure>
 
 ## Additional locations where the branding is used
 

docs/User Guide/User Guide/Basic Concepts and Features/Navigation/Search.md

@@ -1,4 +1,4 @@
-# Search
+# Search
 <figure class="image"><img style="aspect-ratio:987/725;" src="Search_image.png" width="987" height="725"></figure>
 
 Note search enables you to find notes by searching for text in the title, content, or [attributes](../../Advanced%20Usage/Attributes.md) of the notes. You also have the option to save your searches, which will create a special search note which is visible on your navigation tree and contains the search results as sub-items.
@@ -69,6 +69,7 @@ The options available are:
 *   `#dateNote >= TODAY-30`: A "smart search" to find notes with the "dateNote" label within the last 30 days. Supported smart values include NOW +- seconds, TODAY +- days, MONTH +- months, YEAR +- years.
 *   `~author.title *=* Tolkien`: Find notes related to an author whose title contains "Tolkien".
 *   `#publicationYear %= '19[0-9]{2}'`: Use the '%=' operator to match a regular expression (regex). This feature has been available since Trilium 0.52.
+*   `note.content %= '\\d{2}:\\d{2} (PM|AM)'`: Find notes that mention a time. Backslashes in a regex must be escaped.
 
 ### Advanced Use Cases