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+# CoaxysPanel Backend Product Contract
+
+## Purpose
+
+1. CoaxysPanel is a hosting control panel product with a production-oriented frontend already in place.
+2. The backend should become the trusted control plane behind the existing frontend.
+3. The backend should provide account, server, website, domain, file, database, email, security, automation, backup, notification, audit, support, and settings services.
+4. The backend should treat the current frontend mock service layer as the public frontend contract surface.
+5. The backend should preserve the product feel of a dense hosting administration interface.
+6. The backend should support the CoaxysPanel brand without using third-party control-panel trademarks or copied assets.
+7. The backend should be designed for real hosting operations, not only visual demos.
+8. The backend should keep destructive infrastructure operations guarded by explicit policy.
+9. The backend should keep the frontend responsive while long-running operations continue asynchronously.
+10. The backend should provide typed, stable, versionable responses for all frontend modules.
+11. The backend should make real infrastructure state visible without exposing unsafe command execution to the browser.
+12. The backend should separate user-facing workflows from privileged host-level execution.
+13. The backend should support mock, staging, and production environments through the same conceptual contracts.
+14. The backend should make it possible to replace mock data one service at a time.
+15. The backend should not require the frontend to know implementation details of servers, packages, daemons, or storage engines.
+16. The frontend should continue to depend on service interfaces rather than importing raw backend payloads directly.
+17. The frontend should receive normalized data that matches the current DTO vocabulary.
+18. The frontend should show loading, success, error, empty, permission, maintenance, and partial-failure states from backend signals.
+19. The backend should provide enough metadata for the frontend to explain status clearly.
+20. The backend should treat every panel action as an auditable business event.
+
+## Product Scope
+
+21. The backend should own authentication and session lifecycle.
+22. The backend should own account selection and current server context.
+23. The backend should own permission evaluation for all modules.
+24. The backend should own hosting-account data.
+25. The backend should own website and application records.
+26. The backend should own domain records and DNS-zone state.
+27. The backend should own file-manager metadata and file-operation jobs.
+28. The backend should own database inventory and database-user relationships.
+29. The backend should own mailbox inventory and email-routing state.
+30. The backend should own metrics ingestion and metric summaries.
+31. The backend should own security findings and security policy state.
+32. The backend should own software-runtime availability.
+33. The backend should own advanced tools that inspect or coordinate server state.
+34. The backend should own server-administration models.
+35. The backend should own users, teams, resellers, roles, and package models.
+36. The backend should own backup schedules, backup artifacts, and restore jobs.
+37. The backend should own automation definitions and automation execution history.
+38. The backend should own notification delivery preferences and notification events.
+39. The backend should own audit-event persistence.
+40. The backend should own support-ticket and diagnostic-report state.
+41. The backend should own global and per-account settings.
+42. The backend should provide read models optimized for the frontend shell.
+43. The backend should provide write models optimized for validated panel operations.
+44. The backend should define ownership boundaries for every module.
+45. The backend should preserve module independence where practical.
+46. The backend should support future module additions without rewriting the app shell.
+47. The backend should expose consistent navigation and capability metadata.
+48. The backend should identify unavailable modules explicitly.
+49. The backend should avoid hidden failures behind generic success messages.
+50. The backend should make backend maintenance state visible to the frontend.
+
+## Core Principles
+
+51. The backend should be contract-first.
+52. The backend should be permission-aware by default.
+53. The backend should be tenant-aware by default.
+54. The backend should be audit-aware by default.
+55. The backend should be failure-aware by default.
+56. The backend should be localization-ready.
+57. The backend should be observability-ready.
+58. The backend should be horizontally scalable where panel traffic requires it.
+59. The backend should support background jobs for slow operations.
+60. The backend should support eventual consistency where infrastructure state cannot be instant.
+61. The backend should not block ordinary UI reads on slow server probes.
+62. The backend should not expose raw secrets to the browser after creation.
+63. The backend should not expose host credentials to frontend clients.
+64. The backend should not treat frontend validation as sufficient.
+65. The backend should not trust client-provided role or permission claims.
+66. The backend should not assume a single server forever.
+67. The backend should not assume a single account forever.
+68. The backend should not assume all customers have the same feature set.
+69. The backend should not require every operation to be synchronous.
+70. The backend should not create fake success for infrastructure actions.
+71. The backend should provide explicit job states for deferred work.
+72. The backend should provide explicit conflict states for contested resources.
+73. The backend should provide explicit validation fields for form errors.
+74. The backend should provide explicit maintenance states for unavailable modules.
+75. The backend should provide explicit permission states for denied modules.
+76. The backend should provide stable identifiers across refreshes.
+77. The backend should provide human-readable names alongside stable identifiers.
+78. The backend should preserve immutable audit data.
+79. The backend should keep destructive actions reversible when the domain allows it.
+80. The backend should document irreversible actions in response metadata.
+
+## API Envelope
+
+81. Every backend response should use a standard envelope.
+82. Successful responses should contain `data`.
+83. Successful responses should contain `meta`.
+84. Successful responses should contain `error: null`.
+85. Failed responses should contain `data: null`.
+86. Failed responses should contain `meta`.
+87. Failed responses should contain a structured `error`.
+88. The error object should contain a stable code.
+89. The error object should contain a human-readable message.
+90. The error object should contain field-level errors when validation fails.
+91. The meta object should include a request identifier.
+92. The meta object should include pagination metadata for list responses.
+93. The meta object should include sort metadata when sorting is applied.
+94. The meta object should include filter metadata when filters are applied.
+95. The meta object should include permission metadata when useful.
+96. The meta object should include partial-failure metadata when applicable.
+97. The meta object should include freshness metadata for cached infrastructure state.
+98. The meta object should include maintenance metadata for degraded services.
+99. The meta object should include job metadata when an operation starts background work.
+100. The meta object should include rate-limit metadata where customer-facing limits exist.
+
+## API Consistency
+
+101. List endpoints should share pagination semantics.
+102. List endpoints should share search semantics.
+103. List endpoints should share filter semantics.
+104. List endpoints should share sort semantics.
+105. List endpoints should provide total counts when feasible.
+106. List endpoints should provide cursor metadata when offset pagination is unsuitable.
+107. Detail endpoints should include all fields needed by the current page.
+108. Detail endpoints should avoid requiring many dependent calls for first render.
+109. Mutation endpoints should return the updated resource or a job reference.
+110. Bulk endpoints should return per-item status.
+111. Bulk endpoints should report partial failures explicitly.
+112. Create endpoints should return the canonical new resource identifier.
+113. Update endpoints should report conflict versions when optimistic concurrency fails.
+114. Delete endpoints should distinguish soft delete, trash, archive, and permanent delete.
+115. Restore endpoints should describe restored scope.
+116. Import endpoints should describe parsed resources, warnings, and rejected records.
+117. Export endpoints should return export metadata and delivery status.
+118. Validation endpoints should return field-level errors without performing the operation.
+119. Preview endpoints should return impact summaries without performing the operation.
+120. Capability endpoints should describe what the authenticated user can see and do.
+
+## Frontend Wiring Contract
+
+121. The frontend should keep using `src/api/services` as the service boundary.
+122. The frontend should switch from mock services to HTTP-backed services behind the same method names.
+123. The frontend should preserve TanStack Query query keys as stable cache concepts.
+124. The frontend should invalidate query groups after successful mutations.
+125. The frontend should use backend request identifiers in error displays where helpful.
+126. The frontend should map backend field errors into React Hook Form fields.
+127. The frontend should keep route definitions independent from HTTP transport details.
+128. The frontend should receive permission data before showing protected module actions.
+129. The frontend should treat backend permission denials as valid product states.
+130. The frontend should treat backend maintenance states as valid product states.
+131. The frontend should show backend job progress for long-running operations.
+132. The frontend should show backend conflict warnings before overwriting data.
+133. The frontend should show backend validation messages without inventing alternate meanings.
+134. The frontend should not infer infrastructure success from a started job.
+135. The frontend should not assume mock-only latency in production.
+136. The frontend should not assume all tables fit in memory.
+137. The frontend should not assume all file trees are small.
+138. The frontend should not assume all log streams are finite.
+139. The frontend should not assume all charts have complete data.
+140. The frontend should not assume all routes are available for every role.
+
+## Authentication
+
+141. The backend should provide login.
+142. The backend should provide logout.
+143. The backend should provide session refresh.
+144. The backend should provide session expiration signals.
+145. The backend should provide forgot-password flow state.
+146. The backend should provide reset-password flow state.
+147. The backend should provide two-factor challenge state.
+148. The backend should provide recovery-code challenge state.
+149. The backend should provide passkey authentication state.
+150. The backend should provide device-verification state.
+151. The backend should provide account-locked state.
+152. The backend should provide invitation-acceptance state.
+153. The backend should provide first-run setup state.
+154. The backend should provide current-user identity.
+155. The backend should provide current-account identity.
+156. The backend should provide current-server identity.
+157. The backend should provide available account selectors.
+158. The backend should provide available server selectors.
+159. The backend should provide user preferences after authentication.
+160. The backend should provide active session metadata.
+
+## Authentication Safety
+
+161. Password validation should be enforced by the backend.
+162. Two-factor policy should be enforced by the backend.
+163. Passkey policy should be enforced by the backend.
+164. Recovery-code policy should be enforced by the backend.
+165. Device verification should be enforced by the backend.
+166. Account lockout should be enforced by the backend.
+167. Session timeout should be enforced by the backend.
+168. Session revocation should be enforced by the backend.
+169. Invitation expiration should be enforced by the backend.
+170. First-run setup completion should be enforced by the backend.
+171. Login attempts should be audited.
+172. Failed login attempts should be audited.
+173. Password resets should be audited.
+174. Two-factor changes should be audited.
+175. Passkey changes should be audited.
+176. Trusted-device changes should be audited.
+177. Session termination should be audited.
+178. Account lock events should be audited.
+179. Recovery-code usage should be audited.
+180. Invitation acceptance should be audited.
+
+## Permissions
+
+181. The backend should own the canonical permission model.
+182. The backend should support module permissions.
+183. The backend should support action permissions.
+184. The backend should support account-scoped permissions.
+185. The backend should support server-scoped permissions.
+186. The backend should support reseller-scoped permissions.
+187. The backend should support support-operator permissions.
+188. The backend should support read-only auditor permissions.
+189. The backend should support custom roles.
+190. The backend should support permission inheritance.
+191. The backend should support permission overrides.
+192. The backend should support permission previews.
+193. The backend should support permission-denied response states.
+194. The backend should support permission metadata in navigation responses.
+195. The backend should support feature-list restrictions.
+196. The backend should support package restrictions.
+197. The backend should support suspension restrictions.
+198. The backend should support maintenance restrictions.
+199. The backend should support emergency-lockdown restrictions.
+200. The backend should make permissions auditable.
+
+## Dashboard
+
+201. The backend should provide dashboard account information.
+202. The backend should provide dashboard server information.
+203. The backend should provide dashboard resource usage.
+204. The backend should provide dashboard service status.
+205. The backend should provide dashboard quick-action availability.
+206. The backend should provide dashboard widget preferences.
+207. The backend should provide dashboard widget order.
+208. The backend should provide dashboard hidden-widget state.
+209. The backend should provide dashboard refresh timestamps.
+210. The backend should provide dashboard stale-data indicators.
+211. The backend should provide dashboard partial-failure indicators.
+212. The backend should provide dashboard empty states for new accounts.
+213. The backend should provide dashboard warnings for quota pressure.
+214. The backend should provide dashboard warnings for service degradation.
+215. The backend should provide dashboard warnings for expiring certificates.
+216. The backend should provide dashboard warnings for failed backups.
+217. The backend should provide dashboard warnings for security findings.
+218. The backend should provide dashboard links to relevant modules.
+219. The backend should provide dashboard metrics at suitable granularity.
+220. The backend should keep dashboard reads fast.
+
+## Tools Registry
+
+221. The backend should expose available tools for the authenticated user.
+222. The backend should expose tool categories.
+223. The backend should expose tool labels.
+224. The backend should expose tool descriptions.
+225. The backend should expose tool keywords.
+226. The backend should expose tool badges.
+227. The backend should expose tool warnings.
+228. The backend should expose tool permission status.
+229. The backend should expose tool availability status.
+230. The backend should expose tool maintenance status.
+231. The backend should expose tool favorite state.
+232. The backend should expose recently used tools.
+233. The backend should accept favorite ordering.
+234. The backend should accept recently used updates.
+235. The backend should support tool search.
+236. The backend should support category filtering.
+237. The backend should support tools hidden by packages.
+238. The backend should support tools hidden by reseller policy.
+239. The backend should support tools disabled by server capability.
+240. The backend should make tool metadata stable enough for frontend caching.
+
+## Websites
+
+241. The backend should provide website lists.
+242. The backend should provide website details.
+243. The backend should provide website creation state.
+244. The backend should provide website runtime choices.
+245. The backend should provide domain assignment choices.
+246. The backend should provide SSL assignment choices.
+247. The backend should provide backup assignment choices.
+248. The backend should provide database assignment choices.
+249. The backend should provide repository assignment choices.
+250. The backend should provide upload assignment choices.
+251. The backend should validate website names.
+252. The backend should validate document roots.
+253. The backend should validate runtime settings.
+254. The backend should validate environment variables.
+255. The backend should validate resource limits.
+256. The backend should validate deployment settings.
+257. The backend should validate maintenance-mode settings.
+258. The backend should validate redirect settings.
+259. The backend should validate health-check settings.
+260. The backend should return website creation as a job when provisioning is required.
+
+## Website Operations
+
+261. Website creation should be auditable.
+262. Website deletion should be auditable.
+263. Website cloning should be auditable.
+264. Website staging creation should be auditable.
+265. Website deployment should be auditable.
+266. Website rollback should be auditable.
+267. Website domain assignment should be auditable.
+268. Website SSL assignment should be auditable.
+269. Website backup assignment should be auditable.
+270. Website runtime changes should be auditable.
+271. Website environment changes should be auditable.
+272. Website resource-limit changes should be auditable.
+273. Website process changes should be auditable.
+274. Website maintenance-mode changes should be auditable.
+275. Website redirect changes should be auditable.
+276. Website health-check changes should be auditable.
+277. Website log access should be permission-gated.
+278. Website deployment logs should be streamable.
+279. Website access logs should be filterable.
+280. Website error logs should be filterable.
+
+## Domains
+
+281. The backend should provide domain lists.
+282. The backend should provide domain details.
+283. The backend should provide subdomain records.
+284. The backend should provide alias records.
+285. The backend should provide parked-domain records.
+286. The backend should provide redirect records.
+287. The backend should provide domain transfer status.
+288. The backend should provide domain verification status.
+289. The backend should provide DNSSEC status.
+290. The backend should provide nameserver settings.
+291. The backend should provide domain health state.
+292. The backend should provide propagation status.
+293. The backend should provide certificate status.
+294. The backend should validate domain syntax.
+295. The backend should validate ownership checks.
+296. The backend should validate redirect targets.
+297. The backend should validate nameserver changes.
+298. The backend should validate alias conflicts.
+299. The backend should validate subdomain conflicts.
+300. The backend should report DNS and certificate dependencies clearly.
+
+## DNS
+
+301. The backend should provide DNS-zone records.
+302. The backend should support A records.
+303. The backend should support AAAA records.
+304. The backend should support CNAME records.
+305. The backend should support MX records.
+306. The backend should support TXT records.
+307. The backend should support SRV records.
+308. The backend should support CAA records.
+309. The backend should support NS records.
+310. The backend should support PTR records where applicable.
+311. The backend should validate record names.
+312. The backend should validate record values.
+313. The backend should validate TTL values.
+314. The backend should validate priority values.
+315. The backend should validate record conflicts.
+316. The backend should validate apex restrictions.
+317. The backend should validate CNAME exclusivity.
+318. The backend should validate MX dependencies.
+319. The backend should validate CAA syntax.
+320. The backend should return propagation-check state.
+
+## DNS Operations
+
+321. DNS record creation should be auditable.
+322. DNS record editing should be auditable.
+323. DNS record duplication should be auditable.
+324. DNS record deletion should be auditable.
+325. DNS bulk deletion should be auditable.
+326. DNS imports should be auditable.
+327. DNS exports should be auditable.
+328. Raw-zone edits should be auditable.
+329. DNSSEC changes should be auditable.
+330. Nameserver changes should be auditable.
+331. DNS operations should identify affected zones.
+332. DNS operations should identify affected records.
+333. DNS operations should identify conflicts.
+334. DNS operations should identify warnings.
+335. DNS operations should identify propagation expectations.
+336. DNS operations should not require frontend parsing of raw zone files.
+337. DNS operations should return normalized records.
+338. DNS operations should preserve comments where the backend supports them.
+339. DNS operations should protect provider-managed records.
+340. DNS operations should expose read-only records as read-only.
+
+## Files
+
+341. The backend should provide directory trees.
+342. The backend should provide file lists.
+343. The backend should provide file details.
+344. The backend should provide file previews.
+345. The backend should provide image previews.
+346. The backend should provide text previews.
+347. The backend should provide source previews.
+348. The backend should provide upload jobs.
+349. The backend should provide download authorizations.
+350. The backend should provide archive jobs.
+351. The backend should provide extract jobs.
+352. The backend should provide compress jobs.
+353. The backend should provide trash state.
+354. The backend should provide restore state.
+355. The backend should provide permission metadata.
+356. The backend should provide ownership metadata.
+357. The backend should provide checksum metadata.
+358. The backend should provide storage usage.
+359. The backend should provide hidden-file visibility policy.
+360. The backend should provide conflict-resolution options.
+
+## File Operations
+
+361. File upload should be job-aware.
+362. Multi-file upload should be job-aware.
+363. Drag-and-drop upload should be job-aware.
+364. File rename should be conflict-aware.
+365. File move should be conflict-aware.
+366. File copy should be conflict-aware.
+367. File duplicate should be conflict-aware.
+368. File delete should be trash-aware.
+369. File restore should be conflict-aware.
+370. File creation should validate path and name.
+371. Directory creation should validate path and name.
+372. Archive creation should report progress.
+373. Archive extraction should report progress.
+374. Compression should report progress.
+375. Permission changes should be auditable.
+376. Ownership display should be accurate.
+377. Checksum calculation should be asynchronous for large files.
+378. Source editing should preserve encoding metadata.
+379. Source editing should detect concurrent modifications.
+380. Source editing should report validation warnings where supported.
+
+## File Safety
+
+381. The backend should prevent path traversal.
+382. The backend should enforce account root boundaries.
+383. The backend should hide unauthorized paths.
+384. The backend should protect system paths.
+385. The backend should protect panel-owned files.
+386. The backend should enforce upload size limits.
+387. The backend should enforce file count limits.
+388. The backend should enforce extension restrictions where configured.
+389. The backend should scan uploads where policy requires it.
+390. The backend should quarantine suspicious files where policy requires it.
+391. The backend should avoid exposing server absolute paths beyond allowed account context.
+392. The backend should avoid exposing raw host usernames unless policy permits it.
+393. The backend should represent symlinks safely.
+394. The backend should make destructive file operations reversible when possible.
+395. The backend should require confirmation metadata for permanent deletes.
+396. The backend should keep operation transcripts for audits.
+397. The backend should support Web Disk state.
+398. The backend should support FTP account state.
+399. The backend should support FTP session state.
+400. The backend should support Git repository state.
+
+## Databases
+
+401. The backend should provide MySQL database state.
+402. The backend should provide MariaDB database state.
+403. The backend should provide PostgreSQL database state.
+404. The backend should provide database user state.
+405. The backend should provide database permission state.
+406. The backend should provide database creation workflow state.
+407. The backend should provide remote access state.
+408. The backend should provide backup state.
+409. The backend should provide restore state.
+410. The backend should provide size analytics.
+411. The backend should provide active connection state.
+412. The backend should provide slow query summaries.
+413. The backend should provide process-list state.
+414. The backend should provide admin-tool launch readiness.
+415. The backend should validate database names.
+416. The backend should validate database usernames.
+417. The backend should validate passwords.
+418. The backend should validate privileges.
+419. The backend should validate remote hosts.
+420. The backend should validate backup policies.
+
+## Database Operations
+
+421. Database creation should be auditable.
+422. Database deletion should be auditable.
+423. Database rename should be auditable where supported.
+424. Database user creation should be auditable.
+425. Database user deletion should be auditable.
+426. Database password changes should be auditable.
+427. Database privilege changes should be auditable.
+428. Remote access changes should be auditable.
+429. Database backup creation should be auditable.
+430. Database restore should be auditable.
+431. Admin-tool launch should be auditable.
+432. Connection tests should return explicit results.
+433. Connection tests should not expose passwords.
+434. Process-list actions should be permission-gated.
+435. Slow query access should be permission-gated.
+436. Database analytics should be cacheable.
+437. Database storage values should be normalized.
+438. Database engines should be represented explicitly.
+439. Database versions should be represented explicitly.
+440. Database limits should be represented explicitly.
+
+## Email
+
+441. The backend should provide email account state.
+442. The backend should provide mailbox creation state.
+443. The backend should provide quota state.
+444. The backend should provide password-management state.
+445. The backend should provide forwarder state.
+446. The backend should provide domain-forwarder state.
+447. The backend should provide routing state.
+448. The backend should provide autoresponder state.
+449. The backend should provide default-address state.
+450. The backend should provide mailing-list state.
+451. The backend should provide delivery-tracking state.
+452. The backend should provide email-filter state.
+453. The backend should provide global-filter state.
+454. The backend should provide spam-filtering state.
+455. The backend should provide DKIM state.
+456. The backend should provide SPF state.
+457. The backend should provide DMARC state.
+458. The backend should provide encryption state.
+459. The backend should provide calendar state.
+460. The backend should provide contact state.
+
+## Email Operations
+
+461. Mailbox creation should be auditable.
+462. Mailbox deletion should be auditable.
+463. Mailbox quota changes should be auditable.
+464. Mailbox password changes should be auditable.
+465. Forwarder changes should be auditable.
+466. Routing changes should be auditable.
+467. Autoresponder changes should be auditable.
+468. Default-address changes should be auditable.
+469. Mailing-list changes should be auditable.
+470. Delivery tracking should be searchable.
+471. Email filters should be testable.
+472. Spam filter changes should be auditable.
+473. DKIM changes should be auditable.
+474. SPF changes should be auditable.
+475. DMARC changes should be auditable.
+476. Encryption key changes should be auditable.
+477. Mail queue actions should be auditable.
+478. Mail log access should be permission-gated.
+479. Webmail launch should be auditable.
+480. Client configuration should be generated from canonical server data.
+
+## Email Client Configuration
+
+481. The backend should provide IMAP settings.
+482. The backend should provide SMTP settings.
+483. The backend should provide POP3 settings.
+484. The backend should provide TLS information.
+485. The backend should provide mobile configuration data.
+486. The backend should provide desktop configuration data.
+487. The backend should provide server hostnames.
+488. The backend should provide ports.
+489. The backend should provide encryption requirements.
+490. The backend should provide authentication methods.
+491. The backend should provide username formats.
+492. The backend should provide mailbox storage data.
+493. The backend should provide last-login data.
+494. The backend should provide forwarding state.
+495. The backend should provide spam score summaries.
+496. The backend should provide authentication status.
+497. The backend should provide active sessions.
+498. The backend should provide device setup hints as data.
+499. The backend should avoid exposing passwords.
+500. The backend should keep generated settings account-specific.
+
+## Metrics
+
+501. The backend should provide visitor metrics.
+502. The backend should provide access-log summaries.
+503. The backend should provide error-log summaries.
+504. The backend should provide bandwidth metrics.
+505. The backend should provide raw-access metadata.
+506. The backend should provide AWStats-style metrics.
+507. The backend should provide Webalizer-style metrics.
+508. The backend should provide resource-usage metrics.
+509. The backend should provide CPU history.
+510. The backend should provide memory history.
+511. The backend should provide disk history.
+512. The backend should provide network-traffic history.
+513. The backend should provide HTTP-status distributions.
+514. The backend should provide top URLs.
+515. The backend should provide top referrers.
+516. The backend should provide top countries.
+517. The backend should provide top user agents.
+518. The backend should provide top IP addresses.
+519. The backend should provide database performance metrics.
+520. The backend should provide email-delivery metrics.
+
+## Metrics Behavior
+
+521. Metrics responses should support date ranges.
+522. Metrics responses should support comparison ranges.
+523. Metrics responses should support export metadata.
+524. Metrics responses should support live-update indicators.
+525. Metrics responses should support empty states.
+526. Metrics responses should support delayed-ingestion states.
+527. Metrics responses should support partial data warnings.
+528. Metrics responses should support timezone-aware labels.
+529. Metrics responses should support account scoping.
+530. Metrics responses should support domain scoping.
+531. Metrics responses should support website scoping.
+532. Metrics responses should support server scoping.
+533. Metrics responses should normalize units.
+534. Metrics responses should identify sampled data.
+535. Metrics responses should identify estimated data.
+536. Metrics responses should avoid leaking other tenants.
+537. Metrics exports should be auditable.
+538. Metrics retention should be policy-driven.
+539. Metrics aggregation should be product-consistent.
+540. Metrics freshness should be visible.
+
+## Security
+
+541. The backend should provide SSL/TLS status.
+542. The backend should provide certificate management state.
+543. The backend should provide Let's Encrypt state.
+544. The backend should provide custom certificate upload state.
+545. The backend should provide CSR state.
+546. The backend should provide private-key metadata.
+547. The backend should provide automatic HTTPS state.
+548. The backend should provide HTTPS redirect state.
+549. The backend should provide HSTS state.
+550. The backend should provide SSH access state.
+551. The backend should provide SSH key state.
+552. The backend should provide IP blocker state.
+553. The backend should provide firewall state.
+554. The backend should provide port-rule state.
+555. The backend should provide brute-force protection state.
+556. The backend should provide WAF rule state.
+557. The backend should provide malware scanning state.
+558. The backend should provide antivirus scanning state.
+559. The backend should provide file-integrity state.
+560. The backend should provide security-advisor state.
+
+## Security Operations
+
+561. Certificate issuance should be job-aware.
+562. Certificate renewal should be job-aware.
+563. Certificate upload should validate chains.
+564. CSR generation should be auditable.
+565. Private-key import should be guarded.
+566. HTTPS redirect changes should be auditable.
+567. HSTS changes should be auditable.
+568. SSH key changes should be auditable.
+569. IP blocker changes should be auditable.
+570. Firewall changes should be auditable.
+571. Port-rule changes should be auditable.
+572. Brute-force policy changes should be auditable.
+573. WAF rule changes should be auditable.
+574. Malware scans should be job-aware.
+575. Antivirus scans should be job-aware.
+576. Integrity scans should be job-aware.
+577. Security findings should have severity.
+578. Security findings should have target metadata.
+579. Security findings should have recommended actions.
+580. Security findings should have remediation status.
+
+## Defensive Boundary
+
+581. The backend should treat security modules as defensive administration interfaces.
+582. The backend should not expose offensive attack tooling.
+583. The backend should not execute arbitrary user-provided attack payloads.
+584. The backend should not provide exploit automation.
+585. The backend should not provide credential harvesting features.
+586. The backend should not expose private keys after creation unless explicit policy allows it.
+587. The backend should not reveal sensitive scan internals to unauthorized users.
+588. The backend should not allow firewall lockout without recovery policy.
+589. The backend should not allow security-policy bypass from the frontend.
+590. The backend should not silently downgrade security settings.
+591. The backend should provide safe previews for risky changes.
+592. The backend should provide typed confirmation requirements.
+593. The backend should provide reason-field requirements.
+594. The backend should provide second-factor requirements for critical actions.
+595. The backend should provide impact descriptions for critical actions.
+596. The backend should provide audit previews for critical actions.
+597. The backend should provide rollback metadata where possible.
+598. The backend should provide emergency-contact or recovery metadata where appropriate.
+599. The backend should preserve evidence for security events.
+600. The backend should make security state explainable.
+
+## Software And Runtimes
+
+601. The backend should provide PHP version state.
+602. The backend should provide PHP extension state.
+603. The backend should provide PHP configuration state.
+604. The backend should provide per-domain PHP version state.
+605. The backend should provide PHP-FPM settings state.
+606. The backend should provide Node.js application state.
+607. The backend should provide Node.js version state.
+608. The backend should provide Python application state.
+609. The backend should provide Python version state.
+610. The backend should provide Ruby application state.
+611. The backend should provide Docker application state.
+612. The backend should provide Composer state.
+613. The backend should provide npm script state.
+614. The backend should provide package-manager status.
+615. The backend should provide application-installer state.
+616. The backend should provide runtime environment variables.
+617. The backend should provide process-manager state.
+618. The backend should provide website optimization state.
+619. The backend should provide compression state.
+620. The backend should provide cache state.
+
+## Runtime Framework
+
+621. Runtime definitions should be data-driven.
+622. Runtime versions should be explicit.
+623. Runtime extensions should be explicit.
+624. Runtime process managers should be explicit.
+625. Runtime environment-variable rules should be explicit.
+626. Runtime resource limits should be explicit.
+627. Runtime compatibility warnings should be explicit.
+628. Runtime update availability should be explicit.
+629. Runtime deprecation state should be explicit.
+630. Runtime default settings should be explicit.
+631. Runtime package operations should be job-aware.
+632. Runtime process operations should be job-aware.
+633. Runtime configuration changes should be auditable.
+634. Runtime package changes should be auditable.
+635. Runtime version changes should be auditable.
+636. Runtime environment changes should be auditable.
+637. Runtime restart requirements should be visible.
+638. Runtime rollback availability should be visible.
+639. Runtime future additions should not require frontend redesign.
+640. Runtime labels should remain product-friendly.
+
+## Advanced Tools
+
+641. The backend should provide cron-job state.
+642. The backend should provide task-scheduler state.
+643. The backend should provide DNS lookup state.
+644. The backend should provide traceroute state.
+645. The backend should provide index-manager state.
+646. The backend should provide error-page state.
+647. The backend should provide MIME type state.
+648. The backend should provide Apache handler state.
+649. The backend should provide Nginx snippet state.
+650. The backend should provide reverse-proxy rule state.
+651. The backend should provide process-manager state.
+652. The backend should provide service-manager state.
+653. The backend should provide terminal session state.
+654. The backend should provide log-viewer state.
+655. The backend should provide queue-manager state.
+656. The backend should provide webhook state.
+657. The backend should provide API explorer metadata.
+658. The backend should provide API documentation metadata.
+659. The backend should provide environment-inspector state.
+660. The backend should provide system-information state.
+
+## Terminal
+
+661. The terminal backend should be mockable.
+662. The terminal backend should be permission-gated.
+663. The terminal backend should be session-scoped.
+664. The terminal backend should be server-scoped.
+665. The terminal backend should provide connection state.
+666. The terminal backend should provide tab state.
+667. The terminal backend should provide transcript state.
+668. The terminal backend should provide resize state.
+669. The terminal backend should provide copy-paste policy.
+670. The terminal backend should provide search metadata.
+671. The terminal backend should provide reconnect state.
+672. The terminal backend should provide fullscreen state metadata.
+673. The terminal backend should provide clear-session actions.
+674. The terminal backend should provide transcript download metadata.
+675. The terminal backend should not expose unrestricted command execution to normal users.
+676. The terminal backend should not bypass account isolation.
+677. The terminal backend should not bypass audit logging.
+678. The terminal backend should not bypass role restrictions.
+679. The terminal backend should distinguish mock sessions from real sessions.
+680. The terminal backend should be optional per server.
+
+## Server Administration
+
+681. The backend should provide server overview state.
+682. The backend should provide server status.
+683. The backend should provide services state.
+684. The backend should provide process state.
+685. The backend should provide network-interface state.
+686. The backend should provide mounted-filesystem state.
+687. The backend should provide storage-device state.
+688. The backend should provide system-update state.
+689. The backend should provide kernel information.
+690. The backend should provide reboot state.
+691. The backend should provide shutdown state.
+692. The backend should provide hostname state.
+693. The backend should provide timezone state.
+694. The backend should provide DNS resolver state.
+695. The backend should provide nameserver state.
+696. The backend should provide firewall state.
+697. The backend should provide package-update state.
+698. The backend should provide service-log state.
+699. The backend should provide health-check state.
+700. The backend should provide server-registration state.
+
+## Dangerous Server Actions
+
+701. Reboot actions should require confirmation.
+702. Shutdown actions should require confirmation.
+703. Package update actions should require confirmation.
+704. Kernel update actions should require confirmation.
+705. Firewall lockout-risk actions should require confirmation.
+706. Service restart actions should require confirmation where impact exists.
+707. Migration actions should require confirmation.
+708. Destructive storage actions should require confirmation.
+709. Hostname changes should require impact summaries.
+710. Timezone changes should require impact summaries.
+711. DNS resolver changes should require impact summaries.
+712. Nameserver changes should require impact summaries.
+713. Reboot actions should request a reason field.
+714. Shutdown actions should request a reason field.
+715. Migration actions should request a reason field.
+716. Destructive storage actions should request a reason field.
+717. Critical actions should support mock two-factor confirmation in frontend mode.
+718. Critical actions should enforce real second-factor confirmation in production mode.
+719. Critical actions should create audit-preview metadata.
+720. Critical actions should create final audit entries.
+
+## Users And Teams
+
+721. The backend should provide hosting-user state.
+722. The backend should provide team-member state.
+723. The backend should provide role state.
+724. The backend should provide permission state.
+725. The backend should provide reseller-account state.
+726. The backend should provide hosting-package state.
+727. The backend should provide account-quota state.
+728. The backend should provide feature-list state.
+729. The backend should provide impersonation state.
+730. The backend should provide invitation state.
+731. The backend should provide suspended-account state.
+732. The backend should provide account-termination state.
+733. The backend should provide account-migration state.
+734. The backend should provide ownership-transfer state.
+735. The backend should provide access-log state.
+736. The backend should provide session-management state.
+737. The backend should validate user email addresses.
+738. The backend should validate role assignments.
+739. The backend should validate package assignments.
+740. The backend should validate quota assignments.
+
+## Roles
+
+741. The backend should support super administrator role.
+742. The backend should support server administrator role.
+743. The backend should support reseller role.
+744. The backend should support hosting account owner role.
+745. The backend should support developer role.
+746. The backend should support billing viewer role.
+747. The backend should support support operator role.
+748. The backend should support read-only auditor role.
+749. The backend should support custom role.
+750. The backend should provide detailed permission matrices.
+751. The backend should provide module-level permissions.
+752. The backend should provide action-level permissions.
+753. The backend should provide resource-level permissions where needed.
+754. The backend should provide permission templates.
+755. The backend should provide permission diffs.
+756. The backend should provide permission-impact previews.
+757. The backend should audit role creation.
+758. The backend should audit role updates.
+759. The backend should audit role deletion.
+760. The backend should audit impersonation events.
+
+## Backups
+
+761. The backend should provide backup dashboard state.
+762. The backend should provide full-account backup state.
+763. The backend should provide website backup state.
+764. The backend should provide database backup state.
+765. The backend should provide email backup state.
+766. The backend should provide configuration backup state.
+767. The backend should provide incremental backup state.
+768. The backend should provide snapshot backup state.
+769. The backend should provide scheduled backup state.
+770. The backend should provide retention-policy state.
+771. The backend should provide backup-destination state.
+772. The backend should provide restore-wizard state.
+773. The backend should provide backup-browser state.
+774. The backend should provide backup-verification state.
+775. The backend should provide encryption status.
+776. The backend should provide storage usage.
+777. The backend should provide failed-job history.
+778. The backend should provide download authorization.
+779. The backend should provide delete state.
+780. The backend should provide clone-from-backup state.
+
+## Backup Destinations
+
+781. Local storage should be represented as a destination.
+782. SFTP should be represented as a destination.
+783. S3-compatible storage should be represented as a destination.
+784. Backblaze B2 should be represented as a destination.
+785. Google Cloud Storage should be represented as a destination.
+786. Azure Blob Storage should be represented as a destination.
+787. Custom object storage should be represented as a destination.
+788. Destination credentials should not be revealed after creation.
+789. Destination tests should return explicit connection status.
+790. Destination tests should return explicit permission status.
+791. Destination capacity should be visible where available.
+792. Destination encryption should be visible.
+793. Destination retention should be visible.
+794. Destination failure state should be visible.
+795. Destination last-success metadata should be visible.
+796. Destination last-failure metadata should be visible.
+797. Destination changes should be auditable.
+798. Destination deletion should be guarded.
+799. Destination reuse should be supported.
+800. Destination policy should be account-scoped.
+
+## Restore
+
+801. Restore operations should be wizard-driven.
+802. Restore operations should include scope selection.
+803. Restore operations should include conflict policy.
+804. Restore operations should include impact preview.
+805. Restore operations should include reason capture.
+806. Restore operations should include second-factor confirmation.
+807. Restore operations should include audit-preview metadata.
+808. Restore operations should include job progress.
+809. Restore operations should include rollback availability where possible.
+810. Restore operations should include post-restore validation.
+811. Restore operations should report partial success.
+812. Restore operations should report skipped resources.
+813. Restore operations should report overwritten resources.
+814. Restore operations should report created resources.
+815. Restore operations should report failed resources.
+816. Restore operations should report warnings.
+817. Restore operations should be auditable.
+818. Restore downloads should be permission-gated.
+819. Restore destructive choices should be explicit.
+820. Restore state should remain visible after page refresh.
+
+## Automation
+
+821. The backend should provide scheduled-task state.
+822. The backend should provide deployment-pipeline state.
+823. The backend should provide webhook state.
+824. The backend should provide event-trigger state.
+825. The backend should provide automation-template state.
+826. The backend should provide retry-policy state.
+827. The backend should provide execution-history state.
+828. The backend should provide failed-execution state.
+829. The backend should provide environment-based workflow state.
+830. The backend should provide backup automation state.
+831. The backend should provide certificate automation state.
+832. The backend should provide update automation state.
+833. The backend should provide monitoring automation state.
+834. The backend should provide notification automation state.
+835. The backend should validate triggers.
+836. The backend should validate conditions.
+837. The backend should validate actions.
+838. The backend should validate branches.
+839. The backend should validate execution previews.
+840. The backend should validate test-mode constraints.
+
+## Notifications
+
+841. The backend should provide notification-center state.
+842. The backend should provide read/unread state.
+843. The backend should provide categories.
+844. The backend should provide notification preferences.
+845. The backend should provide email notification settings.
+846. The backend should provide webhook notification settings.
+847. The backend should provide browser notification settings.
+848. The backend should provide critical alerts.
+849. The backend should provide security alerts.
+850. The backend should provide backup alerts.
+851. The backend should provide resource alerts.
+852. The backend should provide SSL alerts.
+853. The backend should provide deployment alerts.
+854. The backend should provide notification delivery status.
+855. The backend should provide notification retry status.
+856. The backend should provide notification suppression state.
+857. The backend should provide quiet-hour state.
+858. The backend should provide digest state.
+859. The backend should audit preference changes.
+860. The backend should preserve critical-alert history.
+
+## Support
+
+861. The backend should provide documentation metadata.
+862. The backend should provide knowledge-base metadata.
+863. The backend should provide system-diagnostics state.
+864. The backend should provide support-ticket lists.
+865. The backend should provide ticket details.
+866. The backend should provide ticket replies.
+867. The backend should provide file attachment metadata.
+868. The backend should provide ticket status.
+869. The backend should provide ticket priority.
+870. The backend should provide diagnostic-report generation state.
+871. The backend should validate ticket subjects.
+872. The backend should validate ticket messages.
+873. The backend should validate attachments.
+874. The backend should validate ticket ownership.
+875. The backend should audit ticket creation.
+876. The backend should audit ticket replies.
+877. The backend should audit ticket status changes.
+878. The backend should audit diagnostic report generation.
+879. The backend should protect sensitive diagnostic data.
+880. The backend should expose shareable diagnostic summaries.
+
+## Settings
+
+881. The backend should provide general settings.
+882. The backend should provide branding settings.
+883. The backend should provide logo metadata.
+884. The backend should provide theme settings.
+885. The backend should provide accent-color settings.
+886. The backend should provide locale settings.
+887. The backend should provide date-format settings.
+888. The backend should provide time-format settings.
+889. The backend should provide timezone settings.
+890. The backend should provide session-timeout settings.
+891. The backend should provide security defaults.
+892. The backend should provide password policy.
+893. The backend should provide two-factor policy.
+894. The backend should provide email settings.
+895. The backend should provide notification settings.
+896. The backend should provide backup defaults.
+897. The backend should provide DNS defaults.
+898. The backend should provide SSL defaults.
+899. The backend should provide runtime defaults.
+900. The backend should provide file-manager settings.
+
+## More Settings
+
+901. The backend should provide API settings.
+902. The backend should provide feature flags.
+903. The backend should provide experimental feature state.
+904. The backend should provide privacy settings.
+905. The backend should provide data-retention settings.
+906. The backend should provide maintenance-mode settings.
+907. Settings changes should be auditable.
+908. Branding changes should be auditable.
+909. Theme changes should be user-scoped or account-scoped as policy requires.
+910. Locale changes should be user-scoped or account-scoped as policy requires.
+911. Security-default changes should be guarded.
+912. Password-policy changes should be guarded.
+913. Two-factor-policy changes should be guarded.
+914. API-setting changes should be guarded.
+915. Feature-flag changes should be guarded.
+916. Maintenance-mode changes should be guarded.
+917. Settings should support live preview where the frontend already previews state.
+918. Settings should distinguish draft values from saved values.
+919. Settings should expose inherited values.
+920. Settings should expose overridden values.
+
+## Audit Logs
+
+921. The backend should create audit entries for authentication events.
+922. The backend should create audit entries for permission events.
+923. The backend should create audit entries for website events.
+924. The backend should create audit entries for domain events.
+925. The backend should create audit entries for DNS events.
+926. The backend should create audit entries for file events.
+927. The backend should create audit entries for database events.
+928. The backend should create audit entries for email events.
+929. The backend should create audit entries for metric export events.
+930. The backend should create audit entries for security events.
+931. The backend should create audit entries for software events.
+932. The backend should create audit entries for advanced-tool events.
+933. The backend should create audit entries for server events.
+934. The backend should create audit entries for user events.
+935. The backend should create audit entries for reseller events.
+936. The backend should create audit entries for backup events.
+937. The backend should create audit entries for restore events.
+938. The backend should create audit entries for automation events.
+939. The backend should create audit entries for notification events.
+940. The backend should create audit entries for settings events.
+
+## Audit Metadata
+
+941. Audit entries should include actor identity.
+942. Audit entries should include actor role context.
+943. Audit entries should include account context.
+944. Audit entries should include server context.
+945. Audit entries should include reseller context where applicable.
+946. Audit entries should include target type.
+947. Audit entries should include target identifier.
+948. Audit entries should include target label.
+949. Audit entries should include action.
+950. Audit entries should include outcome.
+951. Audit entries should include request identifier.
+952. Audit entries should include IP address.
+953. Audit entries should include user agent where available.
+954. Audit entries should include timestamp.
+955. Audit entries should include reason field where required.
+956. Audit entries should include confirmation metadata where required.
+957. Audit entries should include before-and-after metadata where safe.
+958. Audit entries should avoid storing secrets.
+959. Audit entries should be immutable.
+960. Audit entries should be exportable by authorized users.
+
+## Jobs
+
+961. The backend should represent long-running operations as jobs.
+962. Jobs should have stable identifiers.
+963. Jobs should have type.
+964. Jobs should have status.
+965. Jobs should have progress.
+966. Jobs should have started timestamp.
+967. Jobs should have updated timestamp.
+968. Jobs should have completed timestamp when complete.
+969. Jobs should have actor metadata.
+970. Jobs should have target metadata.
+971. Jobs should have cancellability metadata.
+972. Jobs should have retry metadata.
+973. Jobs should have warnings.
+974. Jobs should have errors.
+975. Jobs should have result summaries.
+976. Jobs should have audit references.
+977. Jobs should support polling.
+978. Jobs should support event updates where available.
+979. Jobs should remain visible after navigation.
+980. Jobs should expire according to retention policy.
+
+## Real-Time Events
+
+981. The backend should provide event streams for job progress.
+982. The backend should provide event streams for notifications.
+983. The backend should provide event streams for terminal sessions.
+984. The backend should provide event streams for log viewers.
+985. The backend should provide event streams for deployment logs.
+986. The backend should provide event streams for backup progress.
+987. The backend should provide event streams for restore progress.
+988. The backend should provide event streams for automation executions.
+989. Event messages should include type.
+990. Event messages should include timestamp.
+991. Event messages should include account context.
+992. Event messages should include server context where relevant.
+993. Event messages should include payload.
+994. Event messages should include request or job references where relevant.
+995. Event messages should preserve authorization boundaries.
+996. Event messages should support reconnect behavior.
+997. Event messages should support last-seen cursors where applicable.
+998. Event messages should not expose data from other tenants.
+999. Event messages should be versionable.
+1000. Event messages should remain compatible with frontend state updates.
+
+## Errors
+
+1001. The backend should provide validation errors.
+1002. The backend should provide permission errors.
+1003. The backend should provide authentication errors.
+1004. The backend should provide conflict errors.
+1005. The backend should provide not-found errors.
+1006. The backend should provide rate-limit errors.
+1007. The backend should provide maintenance errors.
+1008. The backend should provide dependency errors.
+1009. The backend should provide partial-failure errors.
+1010. The backend should provide network-facing timeout errors.
+1011. Error codes should be stable.
+1012. Error messages should be readable.
+1013. Error fields should map to form fields.
+1014. Error metadata should include request identifiers.
+1015. Error metadata should include retryability where relevant.
+1016. Error metadata should include support references where relevant.
+1017. Error metadata should avoid leaking secrets.
+1018. Error metadata should avoid leaking host internals.
+1019. Error states should be testable by the frontend.
+1020. Error states should be documented as product behavior.
+
+## Data Model Expectations
+
+1021. Resource identifiers should be stable.
+1022. Resource labels should be human-readable.
+1023. Resource status values should be enumerated.
+1024. Resource timestamps should be normalized.
+1025. Resource ownership should be explicit.
+1026. Resource server placement should be explicit.
+1027. Resource account placement should be explicit.
+1028. Resource feature availability should be explicit.
+1029. Resource permission availability should be explicit.
+1030. Resource maintenance availability should be explicit.
+1031. Resource soft-delete state should be explicit.
+1032. Resource archival state should be explicit.
+1033. Resource health state should be explicit.
+1034. Resource warning state should be explicit.
+1035. Resource dependency state should be explicit.
+1036. Resource quota impact should be explicit.
+1037. Resource audit metadata should be explicit.
+1038. Resource version metadata should be explicit where edits can conflict.
+1039. Resource display metadata should be frontend-friendly.
+1040. Resource transport metadata should remain separate from business data.
+
+## Frontend State
+
+1041. The frontend should keep global UI state in Zustand only for UI concerns.
+1042. The frontend should keep server data in TanStack Query.
+1043. The frontend should keep form state in React Hook Form.
+1044. The frontend should keep validation schemas aligned with backend validation concepts.
+1045. The frontend should keep route definitions centralized.
+1046. The frontend should keep permission definitions centralized.
+1047. The frontend should keep table definitions close to feature views.
+1048. The frontend should keep mock services replaceable.
+1049. The frontend should keep loading skeletons for backend latency.
+1050. The frontend should keep empty states for backend empty responses.
+
+## Frontend Data Handling
+
+1051. The frontend should cache list reads by module and filter state.
+1052. The frontend should cache detail reads by stable resource identifier.
+1053. The frontend should invalidate related reads after mutations.
+1054. The frontend should preserve optimistic UI only where backend confirmation semantics allow it.
+1055. The frontend should avoid optimistic UI for irreversible operations.
+1056. The frontend should show job progress for asynchronous operations.
+1057. The frontend should show stale data indicators from backend metadata.
+1058. The frontend should show partial-failure messages from backend metadata.
+1059. The frontend should show maintenance banners from backend metadata.
+1060. The frontend should show permission-denied states from backend responses.
+1061. The frontend should use request IDs in support-friendly errors.
+1062. The frontend should use backend-provided display labels.
+1063. The frontend should use backend-provided status values.
+1064. The frontend should use backend-provided quota values.
+1065. The frontend should use backend-provided unit metadata.
+1066. The frontend should use backend-provided route availability.
+1067. The frontend should not parse logs when backend can provide structured summaries.
+1068. The frontend should not calculate security scores from raw findings.
+1069. The frontend should not calculate billing-grade usage from approximate metrics.
+1070. The frontend should not invent backend capability state.
+
+## Internationalization
+
+1071. Backend-provided labels should be localizable where they are product copy.
+1072. Backend-provided enum display names should be localizable.
+1073. Backend-provided validation messages should support localization.
+1074. Backend-provided timestamps should be timezone-neutral.
+1075. Backend-provided durations should be unit-neutral.
+1076. Backend-provided numeric values should be raw numbers plus unit context.
+1077. Backend-provided currency values should include currency codes where billing appears.
+1078. Backend-provided country names should use stable codes plus display labels.
+1079. Backend-provided language choices should use stable locale identifiers.
+1080. Backend-provided date formatting should not be preformatted unless explicitly needed.
+
+## Performance
+
+1081. Backend dashboard reads should be fast.
+1082. Backend navigation reads should be fast.
+1083. Backend permission reads should be fast.
+1084. Backend table reads should support pagination.
+1085. Backend file-list reads should support virtualized frontend consumption.
+1086. Backend log reads should support streaming or cursor windows.
+1087. Backend metric reads should support aggregation.
+1088. Backend search reads should support bounded result sets.
+1089. Backend expensive reads should expose freshness metadata.
+1090. Backend expensive reads should support cached summaries.
+1091. Backend write operations should not block on nonessential refresh work.
+1092. Backend long-running writes should return jobs.
+1093. Backend heavy exports should return jobs.
+1094. Backend imports should return parsed previews or jobs.
+1095. Backend file operations should return progress for large work.
+1096. Backend backup operations should return progress.
+1097. Backend restore operations should return progress.
+1098. Backend metrics should avoid over-fetching by default.
+1099. Backend tables should avoid returning unused giant payloads.
+1100. Backend responses should remain predictable under load.
+
+## Observability
+
+1101. The backend should emit structured logs.
+1102. The backend should emit request metrics.
+1103. The backend should emit job metrics.
+1104. The backend should emit module health metrics.
+1105. The backend should emit dependency health metrics.
+1106. The backend should emit authentication metrics.
+1107. The backend should emit authorization-denial metrics.
+1108. The backend should emit validation-failure metrics.
+1109. The backend should emit audit-write metrics.
+1110. The backend should emit notification-delivery metrics.
+1111. The backend should emit backup-success metrics.
+1112. The backend should emit backup-failure metrics.
+1113. The backend should emit restore-success metrics.
+1114. The backend should emit restore-failure metrics.
+1115. The backend should emit certificate-renewal metrics.
+1116. The backend should emit security-scan metrics.
+1117. The backend should emit database-operation metrics.
+1118. The backend should emit file-operation metrics.
+1119. The backend should emit email-delivery metrics.
+1120. The backend should correlate logs with request IDs.
+
+## Compliance And Privacy
+
+1121. The backend should minimize sensitive data sent to the frontend.
+1122. The backend should minimize secrets stored in audit logs.
+1123. The backend should minimize personal data in exports.
+1124. The backend should support data retention policies.
+1125. The backend should support privacy settings.
+1126. The backend should support account data export where product policy requires it.
+1127. The backend should support account data deletion where product policy requires it.
+1128. The backend should distinguish operational logs from audit logs.
+1129. The backend should distinguish customer data from platform data.
+1130. The backend should support consent-sensitive notification channels where required.
+1131. The backend should keep diagnostic reports scoped.
+1132. The backend should redact credentials from diagnostic reports.
+1133. The backend should redact tokens from diagnostic reports.
+1134. The backend should redact private keys from diagnostic reports.
+1135. The backend should redact connection strings from diagnostic reports.
+1136. The backend should redact environment secrets from diagnostic reports.
+1137. The backend should provide safe support summaries.
+1138. The backend should provide retention metadata to the settings UI.
+1139. The backend should make privacy-impacting changes auditable.
+1140. The backend should keep compliance behavior explicit.
+
+## Migration From Mock Services
+
+1141. Mock services should remain useful for local frontend development.
+1142. HTTP services should preserve the same conceptual methods.
+1143. DTO names should remain aligned with existing contracts.
+1144. Response envelopes should remain aligned with existing contracts.
+1145. Error envelopes should remain aligned with existing contracts.
+1146. Pagination contracts should remain aligned with existing contracts.
+1147. Filtering contracts should remain aligned with existing contracts.
+1148. Sorting contracts should remain aligned with existing contracts.
+1149. Search contracts should remain aligned with existing contracts.
+1150. Bulk-operation contracts should remain aligned with existing contracts.
+1151. Job-progress contracts should remain aligned with existing contracts.
+1152. Audit-metadata contracts should remain aligned with existing contracts.
+1153. Permission-check contracts should remain aligned with existing contracts.
+1154. WebSocket-event contracts should remain aligned with existing contracts.
+1155. Mock latency should remain configurable.
+1156. Mock errors should remain configurable.
+1157. Mock maintenance states should remain configurable.
+1158. Mock permission states should remain configurable.
+1159. Mock empty states should remain configurable.
+1160. Mock data should remain realistic enough for UI regression tests.
+
+## Release Readiness
+
+1161. The backend should be considered ready only when auth flows are wired.
+1162. The backend should be considered ready only when permission checks are authoritative.
+1163. The backend should be considered ready only when dashboard reads are real.
+1164. The backend should be considered ready only when primary module lists are real.
+1165. The backend should be considered ready only when destructive actions are guarded.
+1166. The backend should be considered ready only when audit logging is durable.
+1167. The backend should be considered ready only when job progress is reliable.
+1168. The backend should be considered ready only when frontend errors are explainable.
+1169. The backend should be considered ready only when observability is in place.
+1170. The backend should be considered ready only when backup and restore semantics are clear.
+1171. The backend should be considered ready only when security module boundaries are enforced.
+1172. The backend should be considered ready only when tenant boundaries are enforced.
+1173. The backend should be considered ready only when performance targets are met.
+1174. The backend should be considered ready only when e2e frontend flows pass against it.
+1175. The backend should be considered ready only when support diagnostics are safe.
+1176. The backend should be considered ready only when settings persistence is reliable.
+1177. The backend should be considered ready only when notification delivery is observable.
+1178. The backend should be considered ready only when restore operations are auditable.
+1179. The backend should be considered ready only when migration from mock mode is reversible.
+1180. The backend should be considered ready only when product behavior is documented.
+
+## Non-Goals For The Frontend Contract
+
+1181. The frontend should not become a host command runner.
+1182. The frontend should not own backend authorization decisions.
+1183. The frontend should not own backend quota enforcement.
+1184. The frontend should not own backend security scoring.
+1185. The frontend should not own backend backup integrity checks.
+1186. The frontend should not own backend restore correctness.
+1187. The frontend should not own DNS conflict detection.
+1188. The frontend should not own certificate validation.
+1189. The frontend should not own database privilege truth.
+1190. The frontend should not own email-routing truth.
+1191. The frontend should not own package availability truth.
+1192. The frontend should not own server health truth.
+1193. The frontend should not own audit durability.
+1194. The frontend should not own tenant isolation.
+1195. The frontend should not own secret storage.
+1196. The frontend should not own long-running job execution.
+1197. The frontend should not own terminal execution policy.
+1198. The frontend should not own infrastructure rollback policy.
+1199. The frontend should not own compliance retention.
+1200. The frontend should not own platform incident state.
+
+## Final Product Expectations
+
+1201. CoaxysPanel should feel like one integrated hosting control center.
+1202. The backend should make every visible tool meaningful.
+1203. The backend should make every primary action traceable.
+1204. The backend should make every dangerous action deliberate.
+1205. The backend should make every permission boundary enforceable.
+1206. The backend should make every long-running operation observable.
+1207. The backend should make every validation failure actionable.
+1208. The backend should make every support escalation easier to diagnose.
+1209. The backend should make the frontend replace mock data without redesign.
+1210. The backend should make future modules fit the same service pattern.
+1211. The backend should make account, server, and reseller context explicit everywhere.
+1212. The backend should make failures honest rather than decorative.
+1213. The backend should make infrastructure state understandable to administrators.
+1214. The backend should make security state understandable without exposing offensive capability.
+1215. The backend should make backup and restore trust visible.
+1216. The backend should make automation predictable.
+1217. The backend should make notifications useful instead of noisy.
+1218. The backend should make audit logs complete enough for accountability.
+1219. The backend should make settings changes safe to preview and safe to save.
+1220. The backend and frontend together should preserve the premium CoaxysPanel experience.