Fix item visibility bugs and add effects web UI

- Fix recipe filter to allow owner=None (S-expression compiled recipes)
- Fix media uploads to use category (video/image/audio) not MIME type
- Fix IPFS imports to detect and store correct media type
- Add Effects navigation link between Recipes and Media
- Create effects list and detail templates with upload functionality
- Add cache/not_found.html template (was missing)
- Add type annotations to service classes
- Add tests for item visibility and effects web UI (30 tests)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/templates/base.html

@@ -6,6 +6,7 @@
 <nav class="flex items-center space-x-6">
     <a href="/runs" class="text-gray-300 hover:text-white {% if active_tab == 'runs' %}text-white font-medium{% endif %}">Runs</a>
     <a href="/recipes" class="text-gray-300 hover:text-white {% if active_tab == 'recipes' %}text-white font-medium{% endif %}">Recipes</a>
+    <a href="/effects" class="text-gray-300 hover:text-white {% if active_tab == 'effects' %}text-white font-medium{% endif %}">Effects</a>
     <a href="/media" class="text-gray-300 hover:text-white {% if active_tab == 'media' %}text-white font-medium{% endif %}">Media</a>
     <a href="/storage" class="text-gray-300 hover:text-white {% if active_tab == 'storage' %}text-white font-medium{% endif %}">Storage</a>
     <a href="/download/client" class="text-gray-300 hover:text-white" title="Download CLI client">Client</a>

app/templates/cache/not_found.html

@@ -0,0 +1,21 @@
+{% extends "base.html" %}
+
+{% block title %}Content Not Found - Art-DAG L1{% endblock %}
+
+{% block content %}
+<div class="max-w-2xl mx-auto text-center py-16">
+    <h1 class="text-6xl font-bold text-gray-400 mb-4">404</h1>
+    <h2 class="text-2xl font-semibold mb-4">Content Not Found</h2>
+    <p class="text-gray-400 mb-8">
+        The content with hash <code class="bg-gray-800 px-2 py-1 rounded">{{ cid[:24] if cid else 'unknown' }}...</code> was not found in the cache.
+    </p>
+    <div class="flex justify-center gap-4">
+        <a href="/cache/" class="bg-blue-600 hover:bg-blue-700 px-6 py-3 rounded-lg font-medium">
+            Browse Media
+        </a>
+        <a href="/" class="bg-gray-700 hover:bg-gray-600 px-6 py-3 rounded-lg font-medium">
+            Go Home
+        </a>
+    </div>
+</div>
+{% endblock %}

app/templates/effects/detail.html

@@ -0,0 +1,195 @@
+{% extends "base.html" %}
+
+{% set meta = effect.meta or effect %}
+
+{% block title %}{{ meta.name or 'Effect' }} - Effects - Art-DAG L1{% endblock %}
+
+{% block head %}
+{{ super() }}
+<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/styles/github-dark.min.css">
+<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/highlight.min.js"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/python.min.js"></script>
+{% endblock %}
+
+{% block content %}
+<div class="max-w-6xl mx-auto">
+    <!-- Header -->
+    <div class="flex items-center space-x-4 mb-6">
+        <a href="/effects" class="text-gray-400 hover:text-white">&larr; Effects</a>
+        <h1 class="text-2xl font-bold">{{ meta.name or 'Unnamed Effect' }}</h1>
+        <span class="text-gray-500">v{{ meta.version or '1.0.0' }}</span>
+        {% if meta.temporal %}
+        <span class="bg-purple-900 text-purple-300 px-2 py-1 rounded text-sm">temporal</span>
+        {% endif %}
+    </div>
+
+    {% if meta.author %}
+    <p class="text-gray-500 mb-2">by {{ meta.author }}</p>
+    {% endif %}
+
+    {% if meta.description %}
+    <p class="text-gray-400 mb-6">{{ meta.description }}</p>
+    {% endif %}
+
+    <!-- CID Info -->
+    <div class="bg-gray-800 rounded-lg p-4 border border-gray-700 mb-6">
+        <div class="flex items-center justify-between">
+            <div>
+                <span class="text-gray-500 text-sm">Content ID (CID)</span>
+                <p class="font-mono text-sm text-gray-300 mt-1" id="effect-cid">{{ effect.cid }}</p>
+            </div>
+            <button onclick="copyToClipboard('{{ effect.cid }}')"
+                    class="bg-gray-700 hover:bg-gray-600 px-3 py-1 rounded text-sm">
+                Copy
+            </button>
+        </div>
+        {% if effect.uploaded_at %}
+        <div class="mt-3 text-gray-500 text-sm">
+            Uploaded: {{ effect.uploaded_at }}
+            {% if effect.uploader %}
+            by {{ effect.uploader }}
+            {% endif %}
+        </div>
+        {% endif %}
+    </div>
+
+    <div class="grid grid-cols-1 lg:grid-cols-3 gap-6">
+        <!-- Left Column: Parameters & Dependencies -->
+        <div class="lg:col-span-1 space-y-6">
+            <!-- Parameters -->
+            {% if meta.params %}
+            <div class="bg-gray-800 rounded-lg border border-gray-700">
+                <div class="border-b border-gray-700 px-4 py-2">
+                    <span class="text-gray-400 text-sm font-medium">Parameters</span>
+                </div>
+                <div class="p-4 space-y-4">
+                    {% for param in meta.params %}
+                    <div>
+                        <div class="flex items-center space-x-2 mb-1">
+                            <span class="font-medium text-white">{{ param.name }}</span>
+                            <span class="bg-blue-900 text-blue-300 px-2 py-0.5 rounded text-xs">{{ param.type }}</span>
+                        </div>
+                        {% if param.description %}
+                        <p class="text-gray-400 text-sm">{{ param.description }}</p>
+                        {% endif %}
+                        <div class="flex flex-wrap gap-2 mt-1 text-xs">
+                            {% if param.range %}
+                            <span class="text-gray-500">range: {{ param.range[0] }} - {{ param.range[1] }}</span>
+                            {% endif %}
+                            {% if param.default is defined %}
+                            <span class="text-gray-500">default: {{ param.default }}</span>
+                            {% endif %}
+                        </div>
+                    </div>
+                    {% endfor %}
+                </div>
+            </div>
+            {% endif %}
+
+            <!-- Dependencies -->
+            {% if meta.dependencies %}
+            <div class="bg-gray-800 rounded-lg border border-gray-700">
+                <div class="border-b border-gray-700 px-4 py-2">
+                    <span class="text-gray-400 text-sm font-medium">Dependencies</span>
+                </div>
+                <div class="p-4">
+                    <div class="flex flex-wrap gap-2">
+                        {% for dep in meta.dependencies %}
+                        <span class="bg-gray-700 text-gray-300 px-3 py-1 rounded">{{ dep }}</span>
+                        {% endfor %}
+                    </div>
+                    {% if meta.requires_python %}
+                    <p class="text-gray-500 text-sm mt-3">Python {{ meta.requires_python }}</p>
+                    {% endif %}
+                </div>
+            </div>
+            {% endif %}
+
+            <!-- Usage in Recipe -->
+            <div class="bg-gray-800 rounded-lg border border-gray-700">
+                <div class="border-b border-gray-700 px-4 py-2">
+                    <span class="text-gray-400 text-sm font-medium">Usage in Recipe</span>
+                </div>
+                <div class="p-4">
+                    <pre class="text-sm text-gray-300 bg-gray-900 rounded p-3 overflow-x-auto"><code class="language-lisp">(effect {{ meta.name or 'effect' }} :cid "{{ effect.cid }}")</code></pre>
+                    <p class="text-gray-500 text-xs mt-2">
+                        Reference this effect in your recipe S-expression.
+                    </p>
+                </div>
+            </div>
+        </div>
+
+        <!-- Right Column: Source Code -->
+        <div class="lg:col-span-2">
+            <div class="bg-gray-800 rounded-lg border border-gray-700">
+                <div class="border-b border-gray-700 px-4 py-2 flex items-center justify-between">
+                    <span class="text-gray-400 text-sm font-medium">Source Code</span>
+                    <div class="flex items-center space-x-2">
+                        <a href="/effects/{{ effect.cid }}/source"
+                           class="text-gray-400 hover:text-white text-sm"
+                           download="{{ meta.name or 'effect' }}.py">
+                            Download
+                        </a>
+                    </div>
+                </div>
+                <div class="p-4">
+                    <pre class="text-sm overflow-x-auto rounded bg-gray-900"><code class="language-python" id="source-code">Loading...</code></pre>
+                </div>
+            </div>
+        </div>
+    </div>
+
+    <!-- Actions -->
+    <div class="flex items-center space-x-4 mt-8">
+        <button onclick="deleteEffect('{{ effect.cid }}')"
+                class="bg-red-600 hover:bg-red-700 px-4 py-2 rounded font-medium">
+            Delete
+        </button>
+        <span id="action-result"></span>
+    </div>
+</div>
+
+<script>
+document.addEventListener('DOMContentLoaded', function() {
+    // Load source code
+    fetch('/effects/{{ effect.cid }}/source')
+        .then(response => response.text())
+        .then(source => {
+            const codeEl = document.getElementById('source-code');
+            codeEl.textContent = source;
+            hljs.highlightElement(codeEl);
+        })
+        .catch(error => {
+            document.getElementById('source-code').textContent = 'Failed to load source code';
+        });
+});
+
+function copyToClipboard(text) {
+    navigator.clipboard.writeText(text).then(() => {
+        const btn = event.target;
+        const originalText = btn.textContent;
+        btn.textContent = 'Copied!';
+        setTimeout(() => { btn.textContent = originalText; }, 1500);
+    });
+}
+
+function deleteEffect(cid) {
+    if (!confirm('Delete this effect from local cache? IPFS copies will persist.')) return;
+
+    fetch('/effects/' + cid, { method: 'DELETE' })
+        .then(response => {
+            if (!response.ok) throw new Error('Delete failed');
+            return response.json();
+        })
+        .then(data => {
+            document.getElementById('action-result').innerHTML =
+                '<span class="text-green-400">Deleted. Redirecting...</span>';
+            setTimeout(() => { window.location.href = '/effects'; }, 1000);
+        })
+        .catch(error => {
+            document.getElementById('action-result').innerHTML =
+                '<span class="text-red-400">' + error.message + '</span>';
+        });
+}
+</script>
+{% endblock %}

app/templates/effects/list.html

@@ -0,0 +1,134 @@
+{% extends "base.html" %}
+
+{% block title %}Effects - Art-DAG L1{% endblock %}
+
+{% block content %}
+<div class="max-w-6xl mx-auto">
+    <div class="flex items-center justify-between mb-6">
+        <h1 class="text-3xl font-bold">Effects</h1>
+        <label class="bg-blue-600 hover:bg-blue-700 px-4 py-2 rounded font-medium cursor-pointer">
+            Upload Effect
+            <input type="file" accept=".py" class="hidden" id="effect-upload" />
+        </label>
+    </div>
+
+    <p class="text-gray-400 mb-8">
+        Effects are Python scripts that process video frames or whole videos.
+        Each effect is stored in IPFS and can be referenced by CID in recipes.
+    </p>
+
+    {% if effects %}
+    <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
+        {% for effect in effects %}
+        {% set meta = effect.meta or effect %}
+        <a href="/effects/{{ effect.cid }}"
+           class="bg-gray-800 border border-gray-700 rounded-lg p-4 hover:border-gray-600 transition-colors">
+            <div class="flex items-center justify-between mb-2">
+                <span class="font-medium text-white">{{ meta.name or 'Unnamed' }}</span>
+                <span class="text-gray-500 text-sm">v{{ meta.version or '1.0.0' }}</span>
+            </div>
+
+            {% if meta.description %}
+            <p class="text-gray-400 text-sm mb-3 line-clamp-2">{{ meta.description }}</p>
+            {% endif %}
+
+            <div class="flex items-center justify-between text-sm mb-2">
+                {% if meta.author %}
+                <span class="text-gray-500">by {{ meta.author }}</span>
+                {% else %}
+                <span></span>
+                {% endif %}
+                {% if meta.temporal %}
+                <span class="bg-purple-900 text-purple-300 px-2 py-0.5 rounded text-xs">temporal</span>
+                {% endif %}
+            </div>
+
+            {% if meta.params %}
+            <div class="text-gray-500 text-sm">
+                {{ meta.params | length }} parameter{{ 's' if meta.params | length != 1 else '' }}
+            </div>
+            {% endif %}
+
+            {% if meta.dependencies %}
+            <div class="mt-2 flex flex-wrap gap-1">
+                {% for dep in meta.dependencies[:3] %}
+                <span class="bg-gray-700 text-gray-300 px-2 py-0.5 rounded text-xs">{{ dep }}</span>
+                {% endfor %}
+                {% if meta.dependencies | length > 3 %}
+                <span class="text-gray-500 text-xs">+{{ meta.dependencies | length - 3 }} more</span>
+                {% endif %}
+            </div>
+            {% endif %}
+
+            <div class="mt-3 text-gray-600 text-xs font-mono truncate">
+                {{ effect.cid[:24] }}...
+            </div>
+        </a>
+        {% endfor %}
+    </div>
+    {% else %}
+    <div class="bg-gray-800 border border-gray-700 rounded-lg p-12 text-center">
+        <p class="text-gray-500 mb-4">No effects uploaded yet.</p>
+        <p class="text-gray-600 text-sm mb-6">
+            Effects are Python files with @effect metadata in a docstring.
+        </p>
+        <label class="bg-blue-600 hover:bg-blue-700 px-6 py-3 rounded font-medium cursor-pointer inline-block">
+            Upload Your First Effect
+            <input type="file" accept=".py" class="hidden" id="effect-upload-empty" />
+        </label>
+    </div>
+    {% endif %}
+</div>
+
+<div id="upload-result" class="fixed bottom-4 right-4 max-w-sm"></div>
+
+<script>
+function handleEffectUpload(input) {
+    const file = input.files[0];
+    if (!file) return;
+
+    const formData = new FormData();
+    formData.append('file', file);
+
+    fetch('/effects/upload', {
+        method: 'POST',
+        body: formData
+    })
+    .then(response => {
+        if (!response.ok) throw new Error('Upload failed');
+        return response.json();
+    })
+    .then(data => {
+        const resultDiv = document.getElementById('upload-result');
+        resultDiv.innerHTML = `
+            <div class="bg-green-900 border border-green-700 rounded-lg p-4">
+                <p class="text-green-300 font-medium">Effect uploaded!</p>
+                <p class="text-green-400 text-sm mt-1">${data.name} v${data.version}</p>
+                <p class="text-gray-400 text-xs mt-2 font-mono">${data.cid}</p>
+            </div>
+        `;
+        setTimeout(() => {
+            window.location.reload();
+        }, 1500);
+    })
+    .catch(error => {
+        const resultDiv = document.getElementById('upload-result');
+        resultDiv.innerHTML = `
+            <div class="bg-red-900 border border-red-700 rounded-lg p-4">
+                <p class="text-red-300 font-medium">Upload failed</p>
+                <p class="text-red-400 text-sm mt-1">${error.message}</p>
+            </div>
+        `;
+    });
+
+    input.value = '';
+}
+
+document.getElementById('effect-upload')?.addEventListener('change', function() {
+    handleEffectUpload(this);
+});
+document.getElementById('effect-upload-empty')?.addEventListener('change', function() {
+    handleEffectUpload(this);
+});
+</script>
+{% endblock %}