feat(mcp): frontend AppSettings/McpStatus types for the new fields (T10.4)

Adds mcp_transport/mcp_port/mcp_expose/mcp_expose_recordings to
AppSettings and a typed McpStatus for mcp_status()'s response; types
onMcpAccess's payload correctly (the live event is camelCase per
docs/04-api-contracts.md, unlike the snake_case McpAccessEntry rows
mcpAccessLog() returns).

src/lib/api.ts

@@ -289,6 +289,10 @@ export interface AppSettings {
   consent_acknowledged: boolean;
   sync_enabled: boolean;
   mcp_enabled: boolean;
+  mcp_transport: string; // http|stdio
+  mcp_port: number;
+  mcp_expose: string; // none|selected|all
+  mcp_expose_recordings: boolean;
   retention_max_age_days: number | null;
   retention_max_size_gb: number | null;
   pst_last_path: string | null;
@@ -325,6 +329,15 @@ export interface McpAccessEntry {
   client: string | null;
 }
 
+// mcp_status() response (FR-MCP-1/6). `endpoint` is empty while disabled.
+export interface McpStatus {
+  enabled: boolean;
+  transport: "http" | "stdio";
+  endpoint: string;
+  tokenSet: boolean;
+  exposeScope: "none" | "selected" | "all";
+}
+
 // ---- Commands ----
 export const api = {
   // `record` controls audio RETENTION (default false / off — ADR-0009).
@@ -455,7 +468,7 @@ export const api = {
   getFeatureBrief: (id: string) => invoke<FeatureBrief>("get_feature_brief", { id }),
   setBriefExposed: (id: string, exposed: boolean) =>
     invoke<void>("set_brief_exposed", { id, exposed }),
-  mcpStatus: () => invoke("mcp_status"),
+  mcpStatus: () => invoke<McpStatus>("mcp_status"),
   setMcpEnabled: (enabled: boolean, transport?: "http" | "stdio", port?: number) =>
     invoke<{ endpoint: string; token: string }>("set_mcp_enabled", { enabled, transport, port }),
   setMcpScope: (expose: "none" | "selected" | "all", exposeRecordings?: boolean) =>
@@ -538,8 +551,11 @@ export const events = {
   onSyncLinked: (
     cb: (p: { ok: boolean; kind: string; error?: string }) => void,
   ): Promise<UnlistenFn> => listen("sync://linked", (e) => cb(e.payload as never)),
-  onMcpAccess: (cb: (p: McpAccessEntry & { client?: string }) => void): Promise<UnlistenFn> =>
-    listen("mcp://access", (e) => cb(e.payload as never)),
+  // Live tail of the FR-MCP-5 audit log (camelCase on the wire, unlike the
+  // snake_case McpAccessEntry rows `mcpAccessLog()` returns).
+  onMcpAccess: (
+    cb: (p: { at: number; tool: string; meetingId?: MeetingId; client?: string }) => void,
+  ): Promise<UnlistenFn> => listen("mcp://access", (e) => cb(e.payload as never)),
   onAgentProgress: (
     cb: (p: { briefId: string; tool: string; line: string }) => void,
   ): Promise<UnlistenFn> => listen("agent://progress", (e) => cb(e.payload as never)),