Refactor web build process and update documentation

- Removed Node.js build artifacts from .gitignore and adjusted Makefile to reflect changes in web UI build process, now using server-rendered Go templates instead of React.
- Updated README to clarify the new web UI architecture and output formats, emphasizing the removal of the Node.js build step.
- Added a command to set the number of frames per render task in manager configuration, enhancing user control over rendering settings.
- Improved Gitea workflow by removing unnecessary npm install step, streamlining the CI process.

cmd/jiggablend/cmd/managerconfig.go

@@ -8,6 +8,7 @@ import (
 	"encoding/hex"
 	"fmt"
 	"os"
+	"strconv"
 	"strings"
 
 	"jiggablend/internal/config"
@@ -381,6 +382,25 @@ var setGoogleOAuthCmd = &cobra.Command{
 
 var setDiscordOAuthRedirectURL string
 
+var setFramesPerRenderTaskCmd = &cobra.Command{
+	Use:   "frames-per-render-task <n>",
+	Short: "Set number of frames per render task (min 1)",
+	Long:  `Set how many frames to batch into each render task. Job frame range is divided into chunks of this size. Default is 10.`,
+	Args:  cobra.ExactArgs(1),
+	Run: func(cmd *cobra.Command, args []string) {
+		n, err := strconv.Atoi(args[0])
+		if err != nil || n < 1 {
+			exitWithError("frames-per-render-task must be a positive integer")
+		}
+		withConfig(func(cfg *config.Config, db *database.DB) {
+			if err := cfg.SetInt(config.KeyFramesPerRenderTask, n); err != nil {
+				exitWithError("Failed to set frames_per_render_task: %v", err)
+			}
+			fmt.Printf("Frames per render task set to %d\n", n)
+		})
+	},
+}
+
 var setDiscordOAuthCmd = &cobra.Command{
 	Use:   "discord-oauth <client-id> <client-secret>",
 	Short: "Set Discord OAuth credentials",
@@ -558,6 +578,7 @@ func init() {
 	configCmd.AddCommand(setCmd)
 	setCmd.AddCommand(setFixedAPIKeyCmd)
 	setCmd.AddCommand(setAllowedOriginsCmd)
+	setCmd.AddCommand(setFramesPerRenderTaskCmd)
 	setCmd.AddCommand(setGoogleOAuthCmd)
 	setCmd.AddCommand(setDiscordOAuthCmd)