Add meetings, sprints, and approval decision notes

Migration 042 creates meetings and sprints tables, adds decision_notes
to approvals. Full-stack: MeetingService, SprintService, IPC channels,
preload bridge, domain types. UI: MeetingsPage with scheduling and
type filtering, SprintsPage with progress tracking, ApprovalDetailDialog
with decision notes textarea.

AgentCompany-New/src/main/database/migrations/042-approval-notes-meetings-sprints.ts

@@ -0,0 +1,37 @@
+export const approvalNotesMeetingsSprintsSchema = `
+  alter table approvals add column decision_notes text;
+
+  create table if not exists meetings (
+    id text primary key,
+    org_id text not null references organizations(id) on delete cascade,
+    title text not null,
+    meeting_type text not null,
+    status text not null,
+    scheduled_at text,
+    duration_minutes integer not null,
+    agenda text not null,
+    notes text not null,
+    decisions text not null,
+    created_at text not null,
+    updated_at text not null
+  );
+
+  create index if not exists idx_meetings_org on meetings(org_id, scheduled_at);
+
+  create table if not exists sprints (
+    id text primary key,
+    org_id text not null references organizations(id) on delete cascade,
+    name text not null,
+    goal text not null,
+    status text not null,
+    start_date text not null,
+    end_date text not null,
+    velocity_points integer not null default 0,
+    completed_points integer not null default 0,
+    retrospective text not null,
+    created_at text not null,
+    updated_at text not null
+  );
+
+  create index if not exists idx_sprints_org on sprints(org_id, status);
+`;

AgentCompany-New/src/main/database/schema.ts

@@ -40,6 +40,7 @@ import { providerAuthProfileCascadeSchema } from "./migrations/038-provider-auth
 import { auditImmutabilityOrgTeardownSchema } from "./migrations/039-audit-immutability-org-teardown";
 import { documentsKnowledgeAutomationSchema } from "./migrations/040-documents-knowledge-automation";
 import { taskSubtasksDeleteSchema } from "./migrations/041-task-subtasks-delete";
+import { approvalNotesMeetingsSprintsSchema } from "./migrations/042-approval-notes-meetings-sprints";
 
 interface Migration {
   version: number;
@@ -89,6 +90,7 @@ const MIGRATIONS: Migration[] = [
   { version: 39, name: "audit_immutability_org_teardown", sql: auditImmutabilityOrgTeardownSchema },
   { version: 40, name: "documents_knowledge_automation", sql: documentsKnowledgeAutomationSchema },
   { version: 41, name: "task_subtasks_delete", sql: taskSubtasksDeleteSchema },
+  { version: 42, name: "approval_notes_meetings_sprints", sql: approvalNotesMeetingsSprintsSchema },
 ];
 
 const SCHEMA_VERSION = MIGRATIONS[MIGRATIONS.length - 1].version;