email leaves the platform for plugins/email

the sidecar, the router, the table, the screens and the account manager are
gone from src/ entirely - deleted, not commented, because a commented mount is
what assertPermissionTotality cannot see.

three reverse imports had to go first, and they are what decided the boundary.
core may not import a plugin's queries, and one of these had already proved
why: getEmailAccounts was awaited at the top level of the agent sidecar, so
when the table went away on 2026-08-13 the rejection took officer-agent into a
pm2 restart loop with every live chat session inside it (fbb6d6c7).

both survivors now read the DISK instead. findEmailAccountName() in
data-path.ts picks the newest emails.db under an account's email_accounts/
directory - no import, no query, and nothing to throw when the plugin is not
installed. the layout was already the platform's, so this costs no coupling.
the agent keeps its email_db tool and an email-context chat still opens in the
right mailbox.

the google oauth callback no longer appends /email to the dock: a plugin's
route is the plugin's business.

app-store/catalogue.ts entry deleted, and that is the whole point rather than
tidying. permissionAvailability derives from sidecar_installs and a plugin only
ever gets a plugin_installs row, so a leftover entry makes the permission
permanently unavailable - denied route, no dock tile - on a machine where the
plugin is installed and healthy. it has bitten headscale and nearly music.

two app-store tests used email as their config-only fixture; repointed at
notify, which is the same shape.

google-auth stays in core and the plugin imports it via @@/. that direction is
allowed and google-auth knows nothing about mail.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/workspaces/types/email.ts

@@ -1,29 +0,0 @@
-export type EmailSummary = {
-  id: string;
-  from: string;
-  to: string;
-  subject: string;
-  date: string;
-  snippet: string;
-  attachmentCount?: number;
-  read?: boolean;
-  fromDomain?: string;
-  labels?: string[];
-  // Conversation grouping: total messages in the thread, and how many are unread (folder view only).
-  threadCount?: number;
-  threadUnread?: number;
-};
-
-export type EmailMessage = EmailSummary & {
-  cc?: string;
-  html?: string;
-  text?: string;
-  attachments: Array<{ filename: string; size: number; contentType: string }>;
-};
-
-// A full conversation: every non-deleted message in the thread, oldest first.
-export type EmailThread = {
-  id: string; // the representative message id used to open the thread
-  subject: string;
-  messages: EmailMessage[];
-};

src/workspaces/types/index.ts

@@ -2,7 +2,6 @@ export type {} from './globals';
 export * from 'officerdb/types';
 
 export type { Job, JobStep, JobStatus, JobStepStatus, JobProgress } from './queue';
-export type { EmailSummary, EmailMessage, EmailThread } from './email';
 
 export type SelectOption = { value: number | string; label?: string };