feat(opencode-web-terminal): complete OpenCode web terminal implementation

- Update OpenCode compose template with web server on port 3000
- Add default_port=3000 and interfaces=[terminal, web] to OpenCode seed data
- Remove hardcoded 8080 fallback in tunnel creation
- Fail gracefully when tool type has no default_port configured
- Update frontend ToolType API to include default_port, category, interfaces
- Add port, category, and interfaces fields to tool type creation form
- Display port and interfaces in tool type cards
- Create migration 0012 to make default_port non-nullable
- Set default_port values for existing built-in tool types
- Quality gates: typecheck ✓, build ✓, Python syntax ✓

apps/web/src/pages/tool-types.tsx

@@ -22,6 +22,9 @@ export const ToolTypesPage = () => {
   const [formName, setFormName] = useState("");
   const [formDisplayName, setFormDisplayName] = useState("");
   const [formDescription, setFormDescription] = useState("");
+  const [formCategory, setFormCategory] = useState("");
+  const [formInterfaces, setFormInterfaces] = useState<string[]>([]);
+  const [formPort, setFormPort] = useState("");
   const [formTemplate, setFormTemplate] = useState("");
   const [formVariables, setFormVariables] = useState("");
   const [formError, setFormError] = useState<string | null>(null);
@@ -47,6 +50,9 @@ export const ToolTypesPage = () => {
     setFormName("");
     setFormDisplayName("");
     setFormDescription("");
+    setFormCategory("");
+    setFormInterfaces([]);
+    setFormPort("");
     setFormTemplate("");
     setFormVariables("");
     setFormError(null);
@@ -58,6 +64,9 @@ export const ToolTypesPage = () => {
     setFormName(toolType.name);
     setFormDisplayName(toolType.display_name);
     setFormDescription(toolType.description ?? "");
+    setFormCategory(toolType.category ?? "");
+    setFormInterfaces(toolType.interfaces ?? []);
+    setFormPort(toolType.default_port?.toString() ?? "");
     setFormTemplate(toolType.compose_template);
     setFormVariables(toolType.required_variables.join(", "));
     setFormError(null);
@@ -80,6 +89,11 @@ export const ToolTypesPage = () => {
       return;
     }
 
+    if (!formPort.trim() || isNaN(Number(formPort))) {
+      setFormError("Default port is required and must be a number");
+      return;
+    }
+
     const variables = formVariables
       .split(",")
       .map((v) => v.trim())
@@ -91,6 +105,9 @@ export const ToolTypesPage = () => {
           name: formName.trim(),
           display_name: formDisplayName.trim(),
           description: formDescription.trim() || undefined,
+          category: formCategory.trim() || undefined,
+          interfaces: formInterfaces.length > 0 ? formInterfaces : undefined,
+          default_port: Number(formPort),
           compose_template: formTemplate.trim(),
           required_variables: variables,
         };
@@ -99,6 +116,9 @@ export const ToolTypesPage = () => {
         const input: UpdateToolTypeRequest = {
           display_name: formDisplayName.trim(),
           description: formDescription.trim() || undefined,
+          category: formCategory.trim() || undefined,
+          interfaces: formInterfaces.length > 0 ? formInterfaces : undefined,
+          default_port: Number(formPort),
           compose_template: formTemplate.trim(),
           required_variables: variables,
         };
@@ -164,6 +184,13 @@ export const ToolTypesPage = () => {
                 {toolType.is_builtin && <span className="badge">Built-in</span>}
               </div>
               <p className="text-secondary">{toolType.description || "No description"}</p>
+              <div className="tool-type-meta">
+                <span>Port: {toolType.default_port || "N/A"}</span>
+                {toolType.interfaces?.length > 0 && (
+                  <span>Interfaces: {toolType.interfaces.join(", ")}</span>
+                )}
+                {toolType.category && <span>Category: {toolType.category}</span>}
+              </div>
               <div className="card-actions">
                 {!toolType.is_builtin && (
                   <>
@@ -240,6 +267,61 @@ export const ToolTypesPage = () => {
                 />
               </div>
 
+              <div className="form-group">
+                <label>Category</label>
+                <input
+                  type="text"
+                  value={formCategory}
+                  onChange={(e) => setFormCategory(e.target.value)}
+                  placeholder="e.g., editor, notebook, ai-assistant"
+                />
+              </div>
+
+              <div className="form-group">
+                <label>Interfaces</label>
+                <div className="checkbox-group">
+                  <label className="checkbox-label">
+                    <input
+                      type="checkbox"
+                      checked={formInterfaces.includes("web")}
+                      onChange={(e) => {
+                        if (e.target.checked) {
+                          setFormInterfaces([...formInterfaces, "web"]);
+                        } else {
+                          setFormInterfaces(formInterfaces.filter((i) => i !== "web"));
+                        }
+                      }}
+                    />
+                    Web
+                  </label>
+                  <label className="checkbox-label">
+                    <input
+                      type="checkbox"
+                      checked={formInterfaces.includes("terminal")}
+                      onChange={(e) => {
+                        if (e.target.checked) {
+                          setFormInterfaces([...formInterfaces, "terminal"]);
+                        } else {
+                          setFormInterfaces(formInterfaces.filter((i) => i !== "terminal"));
+                        }
+                      }}
+                    />
+                    Terminal
+                  </label>
+                </div>
+              </div>
+
+              <div className="form-group">
+                <label>Default Port *</label>
+                <input
+                  type="number"
+                  value={formPort}
+                  onChange={(e) => setFormPort(e.target.value)}
+                  placeholder="e.g., 8443"
+                  required
+                />
+              </div>
+
               <div className="form-group">
                 <label>Compose Template (YAML)</label>
                 <textarea