feat(apps): Add Apps subsystem: App and AppConnection models, managers, typed request handlers, web UI routes and documentation

stories/developer/DEV-008-submit-partner-app.md

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+# Submit App to AppStore
+
+**ID:** DEV-008
+**Priority:** Low
+**Status:** Planned
+**Phase:** 4
+
+## User Story
+As a developer, I want to submit my application to the AppStore so that other organizations can discover and install my app.
+
+## Acceptance Criteria
+- [ ] Submit a new app to the AppStore
+- [ ] Provide app name, description, and logo
+- [ ] Add screenshots for the store listing
+- [ ] Select app category and tags
+- [ ] Set pricing model (free, paid, freemium)
+- [ ] Configure OAuth credentials (redirect URIs, scopes)
+- [ ] Submit for review
+- [ ] View submission status (draft, pending_review, approved, rejected, suspended)
+- [ ] Receive notification on approval/rejection
+- [ ] Edit app listing after approval
+- [ ] View app analytics (install count, usage)
+
+## Technical Notes
+- Submitter organization becomes `ownerOrganizationId`
+- Apps start in `draft` status, move to `pending_review` on submit
+- Platform admins review and approve/reject apps
+- Approved apps become visible in the AppStore
+- App updates may require re-approval
+
+## Approval Workflow
+
+```
+draft → pending_review → approved → published
+                      ↘ rejected
+
+approved ↔ suspended (admin action)
+```
+
+## Data Model
+
+```typescript
+interface IPartnerApp {
+  id: string;
+  type: 'partner';
+  data: {
+    ownerOrganizationId: string;
+    appStoreMetadata: {
+      shortDescription: string;
+      longDescription: string;
+      screenshots: string[];
+      category: string;
+      tags: string[];
+      pricing: { model: 'free' | 'paid' | 'freemium' };
+    };
+    approvalStatus: 'draft' | 'pending_review' | 'approved' | 'rejected' | 'suspended';
+    isPublished: boolean;
+    installCount: number;
+    // ... other fields
+  };
+}
+```
+
+## UI Components
+- **AppSubmissionView** (`/account/org/:orgName/apps/submit`) - Submit new partner app form
+
+## Related Stories
+- ORG-010: Browse and Install Partner Apps
+- ORG-011: Create Custom OIDC Apps
+- ADM-008: Review Partner App Submissions (new admin story)