Initial commit: Lookbook personal collection app

Pinterest-like app for saving images, videos, quotes, and embeds.

Features:
- Go backend with PostgreSQL, SSR templates
- Console-based admin auth (login/logout via browser console)
- Item types: images, videos (ffmpeg transcoding), quotes, embeds
- Media stored as BLOBs in PostgreSQL
- OpenGraph metadata extraction for links
- Embed detection for YouTube, Vimeo, Twitter/X
- Masonry grid layout, item detail pages
- Tag system with filtering
- Refresh metadata endpoint with change warnings
- Replace media endpoint for updating item images/videos

default.nix

@@ -0,0 +1,90 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+let
+  lookbook = pkgs.buildGoModule {
+    pname = "lookbook";
+    version = "0.1.0";
+    src = ./.;
+    
+    vendorHash = null; # Update after first build
+    
+    env.GOPRIVATE = "git.soup.land";
+    
+    # Build the server binary
+    subPackages = [ "cmd/server" ];
+    
+    postInstall = ''
+      mv $out/bin/server $out/bin/lookbook
+    '';
+    
+    meta = with pkgs.lib; {
+      description = "Lookbook";
+      homepage = "https://git.soup.land/soup/lookbook";
+    };
+  };
+in
+{
+  package = lookbook;
+  
+  nixosModule = { config, lib, pkgs, ... }:
+    let 
+      cfg = config.services.lookbook;
+    in {
+      options.services.lookbook = {
+        enable = lib.mkEnableOption "lookbook service";
+        
+        address = lib.mkOption {
+          type = lib.types.str;
+          default = "127.0.0.1:8080";
+          description = "Address to listen on";
+        };
+        
+        databaseUrl = lib.mkOption {
+          type = lib.types.str;
+          description = "PostgreSQL connection URL";
+        };
+        
+        user = lib.mkOption {
+          type = lib.types.str;
+          default = "lookbook";
+          description = "User to run the service as";
+        };
+        
+        group = lib.mkOption {
+          type = lib.types.str;
+          default = "lookbook";
+          description = "Group to run the service as";
+        };
+      };
+      
+      config = lib.mkIf cfg.enable {
+        users.users.${cfg.user} = {
+          isSystemUser = true;
+          group = cfg.group;
+        };
+        users.groups.${cfg.group} = {};
+        
+        systemd.services.lookbook = {
+          description = "Lookbook";
+          wantedBy = [ "multi-user.target" ];
+          after = [ "network.target" "postgresql.service" ];
+          requires = [ "postgresql.service" ];
+          
+          environment = {
+            DATABASE_URL = cfg.databaseUrl;
+            ADDR = cfg.address;
+          };
+          
+          serviceConfig = {
+            Type = "simple";
+            User = cfg.user;
+            Group = cfg.group;
+            ExecStartPre = "${lookbook}/bin/lookbook -migrate";
+            ExecStart = "${lookbook}/bin/lookbook web";
+            Restart = "always";
+            RestartSec = 5;
+          };
+        };
+      };
+    };
+}