fix(plugins): publish the plugin SDK under the @getpaseo scope

The daemon imports the plugin SDK at runtime, but the workspace was named
@paseo/plugin and marked private, so it was never published. 0.5.0-beta.1
shipped @getpaseo/server depending on a package that does not exist and
`npm install @getpaseo/cli@beta` failed with a 404 for every user.

Two things hid it. sync-workspace-versions only rewrites deps matching
@getpaseo/*, so the "*" range on @paseo/plugin survived untouched into the
published tarball. And `npm pack --dry-run`, which is all release:check and
CI run, lists files without ever resolving the dependency graph.

Renaming to @getpaseo/plugin rather than publishing the old name: @paseo is
not our scope on npm, so that name could never have been published at all.
The rename also brings the package under the version-sync filter, which is
what pins it correctly from here on.

Plugins scaffolded against the old name still import @paseo/plugin. Both
spellings resolve through plugin-sdk-specifiers.ts, tagged COMPAT with a
removal date, so existing plugins keep loading.

This does not repair 0.5.0-beta.1 — a published tarball's dependencies
cannot be changed. The package publishes with the next release.

packages/cli/src/commands/plugin/scaffold.test.ts

@@ -50,7 +50,7 @@ describe("plugin scaffold", () => {
     await Promise.all([
       writeFile(
         path.join(directory, "inspect.shared.ts"),
-        `import { defineRpc } from "@paseo/plugin/server";
+        `import { defineRpc } from "@getpaseo/plugin/server";
 import { z } from "zod";
 
 export const inspect = defineRpc({
@@ -62,7 +62,7 @@ export const inspect = defineRpc({
       ),
       writeFile(
         path.join(directory, "inspect.server.ts"),
-        `import type { PluginHandlerContext } from "@paseo/plugin/server";
+        `import type { PluginHandlerContext } from "@getpaseo/plugin/server";
 import type { output as ZodOutput } from "zod";
 import { inspect } from "./inspect.shared";
 
@@ -83,7 +83,7 @@ import {
   useAgent,
   usePaseo,
   useWorkspace,
-} from "@paseo/plugin";
+} from "@getpaseo/plugin";
 
 export function Surface() {
   const paseo = usePaseo();
@@ -111,7 +111,7 @@ export function AgentPanel({ workspaceId, agentId }: PluginAgentPanelProps) {
       ),
       writeFile(
         path.join(directory, "index.ts"),
-        `import type { PluginContext } from "@paseo/plugin";
+        `import type { PluginContext } from "@getpaseo/plugin";
 import { AgentPanel, Surface } from "./main.client";
 import { inspectConfig } from "./inspect.server";
 import { inspect } from "./inspect.shared";

packages/cli/src/commands/plugin/scaffold.ts

@@ -2,7 +2,7 @@ import { mkdir, readdir, writeFile } from "node:fs/promises";
 import path from "node:path";
 import { PluginIdSchema } from "@getpaseo/protocol/messages";
 
-const SDK_DECLARATIONS = `declare module "@paseo/plugin/server" {
+const SDK_DECLARATIONS = `declare module "@getpaseo/plugin/server" {
   import type { PaseoApi } from "@getpaseo/client";
   import type { ZodType, input as ZodInput, output as ZodOutput } from "zod";
 
@@ -56,7 +56,7 @@ const SDK_DECLARATIONS = `declare module "@paseo/plugin/server" {
   export const PluginAttachmentSearchPayloadSchema: import("zod").ZodType<PluginAttachmentSearchPayload>;
 }
 
-declare module "@paseo/plugin" {
+declare module "@getpaseo/plugin" {
   import type { ComponentType } from "react";
   import type { PaseoApi } from "@getpaseo/client";
   import type { ZodType, input as ZodInput, output as ZodOutput } from "zod";
@@ -64,7 +64,7 @@ declare module "@paseo/plugin" {
     PluginAttachmentSourceContribution,
     PluginHandlerContext,
     PluginRpcContract,
-  } from "@paseo/plugin/server";
+  } from "@getpaseo/plugin/server";
 
   export {
     PluginAttachmentItemSchema,
@@ -76,7 +76,7 @@ declare module "@paseo/plugin" {
     type PluginAttachmentSourceContribution,
     type PluginHandlerContext,
     type PluginRpcContract,
-  } from "@paseo/plugin/server";
+  } from "@getpaseo/plugin/server";
 
   export interface PluginTheme {
     readonly colors: {
@@ -242,7 +242,7 @@ const TSCONFIG = {
   include: ["**/*.ts", "**/*.tsx"],
 };
 
-const ENTRY = `import type { PluginContext } from "@paseo/plugin";
+const ENTRY = `import type { PluginContext } from "@getpaseo/plugin";
 import { MainSurface } from "./main.client";
 
 export default function contribute(plugin: PluginContext) {
@@ -251,7 +251,7 @@ export default function contribute(plugin: PluginContext) {
 }
 `;
 
-const CLIENT_SURFACE = `import type { PluginSurfaceProps } from "@paseo/plugin";
+const CLIENT_SURFACE = `import type { PluginSurfaceProps } from "@getpaseo/plugin";
 import React, { useMemo } from "react";
 import { Text, View } from "react-native";