feat: direct docker-compose import into projects

POST /projects/:id/import-compose deploys a compose file straight into a
project — no template row required. Well-known DB images become managed
databases attached to the project network under their service name as DNS
alias; other services deploy in dependency order via deployTemplateGraph.

- api: extract composeToSpecs converter (shared by the template
  import-compose preview and the new project endpoint); fix dropped env
  warnings (pointer receiver); replace insertion sort with sort.Strings
- cascade: database_services.project_id links graph-provisioned DBs to
  their project so project delete tears down runtime + row (previously
  leaked container + network)
- cli: new `containr import` group, `import compose <project> <file|->`
- mcp: containr_projects_import_compose tool
- openapi + regenerated frontend types; docs snapshot + CLI.md
- frontend: compose import modal on the project workspace toolbar
- tests: composeToSpecs conversion, ordering, db-image map, warnings

app/frontend/src/lib/api-client.ts

@@ -1748,6 +1748,25 @@ export async function importComposeTemplate(composeYaml: string): Promise<Compos
   return { config: payload.config, warnings: payload.warnings ?? [] };
 }
 
+export type ProjectComposeImportResult = {
+  created: Array<{ key: string; kind: string; id: string; name: string; deployment_id?: string }>;
+  warnings: string[];
+};
+
+export async function importComposeIntoProject(
+  projectId: string,
+  composeYaml: string,
+): Promise<ProjectComposeImportResult> {
+  const payload = await requestJson<{
+    created?: ProjectComposeImportResult['created'];
+    warnings?: string[];
+  }>(`/projects/${projectId}/import-compose`, {
+    method: 'POST',
+    body: JSON.stringify({ compose_yaml: composeYaml }),
+  });
+  return { created: payload.created ?? [], warnings: payload.warnings ?? [] };
+}
+
 export function serviceStatusClass(status: ServiceStatus): string {
   switch (status) {
     case 'running':