Rename attachment folder from .pi-web/paste to .pi-web/attachments

Attachments can be pasted, dropped, or uploaded, so 'paste' was too
narrow. Rename the default folder and filename prefix accordingly and
update the changeset reference.

src/client/src/components/PromptEditor.ts

@@ -141,7 +141,7 @@ export class PromptEditor extends LitElement {
           <label class="attachment-delivery" title="How attachments are delivered to the agent">
             <select .value=${this.attachmentDelivery} @change=${(event: Event) => { this.changeDelivery(event); }}>
               <option value="inline">Attach to message</option>
-              <option value="folder">Save to .pi-web/paste</option>
+              <option value="folder">Save to .pi-web/attachments</option>
             </select>
           </label>
         ` : null}

src/client/src/controllers/sessionController.test.ts

@@ -269,7 +269,7 @@ describe("SessionController", () => {
     const attachments: PromptAttachment[] = [{ kind: "image", mimeType: "image/png", data: "QUJD", name: "shot.png" }];
     const api: typeof defaultApi = {
       ...defaultApi,
-      saveAttachments: (_session, sent) => { savedCalledWith = sent; return Promise.resolve([{ path: ".pi-web/paste/shot.png", mimeType: "image/png", size: 3 }]); },
+      saveAttachments: (_session, sent) => { savedCalledWith = sent; return Promise.resolve([{ path: ".pi-web/attachments/shot.png", mimeType: "image/png", size: 3 }]); },
       prompt: (_session, text, _behavior, _machineId, sentAttachments) => { promptText = text; promptAttachments = sentAttachments; return Promise.resolve({ accepted: true }); },
     };
     const controller = new SessionController(
@@ -283,7 +283,7 @@ describe("SessionController", () => {
     await controller.send("check this", undefined, attachments, "folder");
 
     expect(savedCalledWith).toEqual(attachments);
-    expect(promptText).toBe("check this\n\[email protected]/paste/shot.png");
+    expect(promptText).toBe("check this\n\[email protected]/attachments/shot.png");
     expect(promptAttachments).toBeUndefined();
     expect(state.sendingPrompts).toEqual({});
   });

src/server/sessions/attachmentService.test.ts

@@ -30,12 +30,12 @@ describe("saveAttachmentsToWorkspace", () => {
     );
 
     expect(saved).toHaveLength(2);
-    expect(saved[0]?.path.startsWith(`${DEFAULT_ATTACHMENT_FOLDER}/paste-`)).toBe(true);
+    expect(saved[0]?.path.startsWith(`${DEFAULT_ATTACHMENT_FOLDER}/attachment-`)).toBe(true);
     expect(saved[0]?.path.endsWith(".png")).toBe(true);
     expect(saved[1]?.path.endsWith(".webp")).toBe(true);
     expect(saved[0]?.size).toBe(pngBytes.byteLength);
 
-    const folderEntries = await readdir(join(workspace, ".pi-web", "paste"));
+    const folderEntries = await readdir(join(workspace, ".pi-web", "attachments"));
     expect(folderEntries).toHaveLength(2);
 
     const firstPath = saved[0]?.path ?? "";

src/server/sessions/attachmentService.ts

@@ -10,7 +10,7 @@ import { resolveParentInsideWorkspace } from "../workspaces/pathSafety.js";
  * Default workspace-relative folder used when saving pasted/dropped
  * attachments for the agent to read with its own tools.
  */
-export const DEFAULT_ATTACHMENT_FOLDER = ".pi-web/paste";
+export const DEFAULT_ATTACHMENT_FOLDER = ".pi-web/attachments";
 
 export interface InlineImage {
   image: ImageContent;
@@ -42,7 +42,7 @@ export async function attachmentsToInlineImages(attachments: PromptAttachment[])
 }
 
 export interface SaveAttachmentsOptions {
-  /** Workspace-relative folder to write into. Defaults to `.pi-web/paste`. */
+  /** Workspace-relative folder to write into. Defaults to `.pi-web/attachments`. */
   folder?: string;
   /** Clock injection for deterministic tests. */
   now?: () => Date;
@@ -66,7 +66,7 @@ export async function saveAttachmentsToWorkspace(
   const saved: SavedPromptAttachment[] = [];
   for (const [index, attachment] of attachments.entries()) {
     const bytes = Buffer.from(attachment.data, "base64");
-    const filename = `paste-${stamp}-${String(index + 1)}.${extensionForImageMimeType(attachment.mimeType)}`;
+    const filename = `attachment-${stamp}-${String(index + 1)}.${extensionForImageMimeType(attachment.mimeType)}`;
     const relativePath = `${folder}/${filename}`;
     await writeFile(join(folderTarget, filename), bytes);
     saved.push({ path: relativePath, mimeType: attachment.mimeType, size: bytes.byteLength });

src/server/sessions/sessionRoutes.test.ts

@@ -175,7 +175,7 @@ class CapturingRouteSessionService extends PiSessionService {
   override saveAttachments(_lookup: string | PiSessionRef, attachments: unknown, folder?: string) {
     const list = Array.isArray(attachments) ? attachments : [];
     return Promise.resolve(list.map((attachment: { mimeType: string; data: string; name?: string }) => ({
-      path: `${folder ?? ".pi-web/paste"}/${attachment.name ?? "file.png"}`,
+      path: `${folder ?? ".pi-web/attachments"}/${attachment.name ?? "file.png"}`,
       mimeType: attachment.mimeType,
       size: Buffer.from(attachment.data, "base64").byteLength,
     })));