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.

web/templates/partials/jobs_table.html

@@ -0,0 +1,40 @@
+{{ define "partial_jobs_table" }}
+{{ $jobs := index . "jobs" }}
+{{ if not $jobs }}
+<p>No jobs yet. Submit one to get started.</p>
+{{ else }}
+<table class="table">
+  <thead>
+    <tr>
+      <th>Name</th>
+      <th>Status</th>
+      <th>Progress</th>
+      <th>Frames</th>
+      <th>Format</th>
+      <th>Created</th>
+      <th>Actions</th>
+    </tr>
+  </thead>
+  <tbody>
+  {{ range $job := $jobs }}
+    <tr>
+      <td><a class="job-link" href="/jobs/{{ $job.ID }}">{{ $job.Name }}</a></td>
+      <td><span class="status {{ statusClass $job.Status }}">{{ $job.Status }}</span></td>
+      <td>{{ progressInt $job.Progress }}%</td>
+      <td>{{ if $job.FrameStart }}{{ derefInt $job.FrameStart }}{{ end }}{{ if $job.FrameEnd }}-{{ derefInt $job.FrameEnd }}{{ end }}</td>
+      <td>{{ if $job.OutputFormat }}{{ derefString $job.OutputFormat }}{{ else }}-{{ end }}</td>
+      <td>{{ formatTime $job.CreatedAt }}</td>
+      <td class="row">
+        {{ if or (eq $job.Status "pending") (eq $job.Status "running") }}
+        <button class="btn tiny" data-cancel-job="{{ $job.ID }}">Cancel</button>
+        {{ end }}
+        {{ if or (eq $job.Status "completed") (eq $job.Status "failed") (eq $job.Status "cancelled") }}
+        <button class="btn tiny danger" data-delete-job="{{ $job.ID }}">Delete</button>
+        {{ end }}
+      </td>
+    </tr>
+  {{ end }}
+  </tbody>
+</table>
+{{ end }}
+{{ end }}