feat: define search folder per newsletter #3

frontend/src/components/letterfeed/NewsletterDialog.tsx

@@ -36,6 +36,7 @@ const getInitialState = (newsletter: Newsletter | null | undefined) => {
       name: newsletter.name,
       slug: newsletter.slug || "",
       emails: newsletter.senders.map((s) => s.email),
+      search_folder: newsletter.search_folder || "",
       move_to_folder: newsletter.move_to_folder || "",
       extract_content: newsletter.extract_content,
     }
@@ -44,6 +45,7 @@ const getInitialState = (newsletter: Newsletter | null | undefined) => {
     name: "",
     slug: "",
     emails: [""],
+    search_folder: "",
     move_to_folder: "",
     extract_content: false,
   }
@@ -89,6 +91,7 @@ export function NewsletterDialog({ newsletter, isOpen, folderOptions, onOpenChan
       name: formData.name,
       slug: formData.slug,
       sender_emails: formData.emails.filter((email) => email.trim()),
+      search_folder: formData.search_folder,
       move_to_folder: formData.move_to_folder,
       extract_content: formData.extract_content,
     }
@@ -148,6 +151,28 @@ export function NewsletterDialog({ newsletter, isOpen, folderOptions, onOpenChan
             />
           </div>
 
+          <div className="space-y-2">
+            <Label htmlFor="search_folder">Folder to Search</Label>
+            <Select
+              value={formData.search_folder || "None"}
+              onValueChange={(value) =>
+                setFormData((prev) => ({ ...prev, search_folder: value === "None" ? "" : value }))
+              }
+            >
+              <SelectTrigger>
+                <SelectValue placeholder="Select folder or leave empty" />
+              </SelectTrigger>
+              <SelectContent>
+                <SelectItem value="None">Default (use global setting)</SelectItem>
+                {folderOptions.map((folder) => (
+                  <SelectItem key={folder} value={folder}>
+                    {folder}
+                  </SelectItem>
+                ))}
+              </SelectContent>
+            </Select>
+          </div>
+
           <div className="space-y-2">
             <Label htmlFor="move_to_folder">Move To Folder</Label>
             <Select

frontend/src/components/letterfeed/__tests__/NewsletterDialog.test.tsx

@@ -23,6 +23,7 @@ const mockNewsletter: Newsletter = {
   extract_content: false,
   senders: [{ id: "1", email: "current@example.com" }],
   entries_count: 5,
+  search_folder: "",
   move_to_folder: "",
 }
 
@@ -62,6 +63,7 @@ describe("NewsletterDialog", () => {
           name: "My New Newsletter",
           slug: "my-new-newsletter",
           sender_emails: ["test@example.com"],
+          search_folder: "",
           move_to_folder: "",
           extract_content: false,
         })
@@ -109,6 +111,7 @@ describe("NewsletterDialog", () => {
           name: "Updated Name",
           slug: "existing-newsletter",
           sender_emails: ["current@example.com"],
+          search_folder: "",
           move_to_folder: "",
           extract_content: false,
         })

frontend/src/lib/api.ts

@@ -11,6 +11,7 @@ export interface Newsletter {
   name: string
   slug: string | null
   is_active: boolean
+  search_folder?: string | null
   move_to_folder?: string | null
   extract_content: boolean
   senders: { id: string; email: string }[]
@@ -21,6 +22,7 @@ export interface NewsletterCreate {
     name: string;
     slug?: string | null;
     sender_emails: string[];
+    search_folder?: string | null;
     move_to_folder?: string | null;
     extract_content: boolean;
 }
@@ -29,6 +31,7 @@ export interface NewsletterUpdate {
     name: string;
     slug?: string | null;
     sender_emails: string[];
+    search_folder?: string | null;
     move_to_folder?: string | null;
     extract_content: boolean;
 }