feat(storage): allow replacing initial policy topology

[AptS-1547]

Summary

• allow setup-created storage policies and policy groups to be replaced or deleted without ID 1 lifecycle exceptions;
• return the system to needs_storage when the last default policy topology is removed, while preserving existing files and requiring explicit assignment migration;
• coordinate policy/default/group mutations with the stable system configuration lock and refresh snapshots/topology notifications after commit;
• remove frontend hard-coded delete protection and update Chinese/English admin and storage documentation.

Safety boundaries

• blobs, folders, policy-group items, and upload sessions still block policy deletion according to the existing force-cleanup contract;
• user/team bindings still block policy-group deletion, including archived teams; administrators must migrate bindings first;
• deleting the last default group does not clear bindings implicitly;
• a replacement default policy can reopen setup and return the system to ready without relying on ID 1.

Tests

• cargo check -j 2
• cargo test --test storage (206 passed, 1 ignored)
• cargo test --features multi-primary-e2e --test multi_primary cluster::concurrent_primary_startup_reconciles_one_default_policy_group -- --ignored --exact
• frontend Vitest full suite (383 files, 2939 tests passed)
• focused frontend policy/group tests (17 tests passed after final review adjustment)
• TypeScript app/node typecheck
• Biome check
• bun run docs:build
• bun run developer-docs:build
• cargo fmt --all -- --check
• git diff --check

Fixes #565

Summary by CodeRabbit

• 新功能
  • 允许删除默认存储策略和默认策略组。
  • 删除最后一个默认策略或策略组后，系统进入“需要配置存储”状态；重新配置默认存储后可恢复上传。
  • 删除默认策略组不会静默清除用户和团队绑定，已存储文件仍可正常读取。
• 界面与文案
  • 更新管理后台的删除提示、状态说明及中英文文档。
• 修复
  • 优化多主节点下默认存储切换、删除和重新配置的一致性与并发协调。

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Review details

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 4767d9e8-f62f-4931-a1ee-cc2271cd266a

📥 Commits

Reviewing files that changed from the base of the PR and between cf5b22b and 4d2000c.

📒 Files selected for processing (3)

• CHANGELOG.md
• developer-docs/en/api/admin.md
• developer-docs/zh-CN/api/admin.md

📝 Walkthrough

Walkthrough

本次变更允许解除引用后的首条默认策略和策略组删除。删除最后一个默认对象后，系统进入 needs_storage，重新配置后恢复 ready。删除流程使用稳定拓扑锁，并同步更新测试、管理端提示和文档。

Changes

存储拓扑生命周期

Layer / File(s)	Summary
稳定拓扑锁与引用统计 src/db/repository/system_initialization_repo.rs, src/db/repository/policy_group_repo.rs, src/db/repository/team_repo.rs, src/services/storage_policy/policy/shared.rs	新增存储拓扑锁。锁函数支持缺失配置初始化。策略组团队引用统计改为包含已归档团队。
事务化策略与策略组删除 src/services/storage_policy/policy/policies.rs, src/services/storage_policy/policy/groups.rs	删除流程在拓扑锁和事务中执行引用检查、删除与提交。移除固定策略 ID、唯一默认策略和唯一默认策略组的删除限制。
删除与重新 setup 回归验证 tests/storage/policies.rs	验证用户和团队绑定保护、默认对象删除、needs_storage 与 ready 状态切换，以及策略组项引用保护。
管理端提示与文档同步 frontend-panel/src/components/admin/..., frontend-panel/src/pages/admin/..., frontend-panel/src/i18n/locales/..., developer-docs/..., docs/src/content/docs/..., CHANGELOG.md	管理端允许删除默认策略和策略组。删除提示、存储 setup 状态说明及中英文文档同步更新。

Estimated code review effort: 4 (Complex) | ~45 minutes

Merge Risk: 🔵 Low · up to cf5b2

The English admin documentation incorrectly describes policy-group deletion as clearing user and team bindings, while the product requires those bindings to be migrated or removed first. This could mislead administrators and result in failed deletion attempts; the PR is otherwise mergeable with explicit owner follow-up to correct the documentation.

Sequence Diagram(s)

sequenceDiagram
  participant AdminUI as 管理端
  participant DeleteService as 策略删除服务
  participant TopologyLock as acquire_storage_topology_lock
  participant Database as 数据库
  AdminUI->>DeleteService: 请求删除策略或策略组
  DeleteService->>TopologyLock: 获取存储拓扑锁
  TopologyLock->>Database: 锁定存储拓扑配置
  DeleteService->>Database: 检查引用并删除对象
  Database-->>DeleteService: 提交事务
  DeleteService-->>AdminUI: 返回删除结果和 setup 状态

Loading

Poem

首条策略卸下旧锁，
默认组也能转身走。
引用未迁移，删除仍停手；
拓扑锁住多 Primary，
needs_storage 等待新配置归队。

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 55.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	标题准确概括了允许替换初始存储策略拓扑这一主要变更，简洁且具体。
Description check	✅ Passed	描述包含变更摘要、安全边界和测试计划，信息完整；虽未单独填写评审备注模板，但不影响整体完整性。
Linked Issues check	✅ Passed	实现覆盖了 [#565] 的生命周期、锁、状态恢复、引用保护、前端文案、文档和回归测试要求。
Out of Scope Changes check	✅ Passed	代码、前端、测试、文档和变更日志均服务于 [#565] 目标，未发现明显的无关变更。

✨ Finishing Touches 💡 2

📝 Generate docstrings 💡

• Create stacked PR
• Commit on current branch

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/issue-565-policy-lifecycle

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[astercommunity-automation]

PR readiness for 4d2000ca44cb

Fact	Value
Blocking conditions	0
Waiting conditions	2
Current unresolved threads	0
Current-head approvals	0
Stale latest reviews	1

• WAIT: PR Gate: waiting
• WAIT: codecov/patch: waiting

This report is deterministic and updated for the current pull request head.

[astercommunity-automation]

CI diagnostics for 4e0abf65d2a3

Workflow	Result	First failing job/step
Rust CI	FAIL	Format and Clippy: Clippy
Frontend CI	PASS	-
E2E	PASS	-
Docs Check	PASS	-
Multi-Primary E2E	PASS	-

Suggested checks

• 格式或静态检查失败，请先运行对应的本地 format/lint 命令。

This comment is updated in place for the latest PR head.

[codecov]

Codecov Report

❌ Patch coverage is 83.01887% with 9 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/services/storage_policy/policy/policies.rs	60.86%	9 Missing ⚠️

📢 Thoughts on this report? Let us know!

[AptS-1547]

@coderabbitai review

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Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

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Inline comments:
In `@developer-docs/en/api/admin.md`:
- Line 503:
更新策略组删除语义的文档：删除被用户或团队绑定的组前，必须先迁移或解除这些绑定，禁止静默清空业务绑定；仅当删除成功且该组是最后一个默认组时，系统才回到
needs_storage，并保留其他被引用组受保护的行为。

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 671b1b3a-b55f-4c17-b2ef-9c836bd6a430

📥 Commits

Reviewing files that changed from the base of the PR and between 78017f2 and cf5b22b.

📒 Files selected for processing (24)

• CHANGELOG.md
• developer-docs/en/api/admin.md
• developer-docs/zh-CN/api/admin.md
• docs/src/content/docs/admin/storage-policies.md
• docs/src/content/docs/en/admin/storage-policies.md
• frontend-panel/src/components/admin/PolicyGroupsTable.test.tsx
• frontend-panel/src/components/admin/PolicyGroupsTable.tsx
• frontend-panel/src/components/admin/admin-policies-page/PoliciesTable.test.tsx
• frontend-panel/src/components/admin/admin-policies-page/PoliciesTable.tsx
• frontend-panel/src/components/admin/admin-policies-page/policyPresentation.test.ts
• frontend-panel/src/components/admin/admin-policies-page/policyPresentation.ts
• frontend-panel/src/i18n/locales/en/admin/policies.json
• frontend-panel/src/i18n/locales/en/admin/policy-groups.json
• frontend-panel/src/i18n/locales/zh/admin/policies.json
• frontend-panel/src/i18n/locales/zh/admin/policy-groups.json
• frontend-panel/src/pages/admin/AdminPolicyGroupsPage.test.tsx
• frontend-panel/src/pages/admin/admin-policies-page/useStoragePolicyListController.ts
• src/db/repository/policy_group_repo.rs
• src/db/repository/system_initialization_repo.rs
• src/db/repository/team_repo.rs
• src/services/storage_policy/policy/groups.rs
• src/services/storage_policy/policy/policies.rs
• src/services/storage_policy/policy/shared.rs
• tests/storage/policies.rs

💤 Files with no reviewable changes (2)

• frontend-panel/src/components/admin/admin-policies-page/policyPresentation.ts
• frontend-panel/src/pages/admin/admin-policies-page/useStoragePolicyListController.ts

Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review.

[AptS-1547]

已处理 review finding。

• developer-docs/en/api/admin.md 已改为明确说明：存在用户或团队绑定时（包括最后一个默认组）必须先迁移绑定，再删除策略组。
• 删除最后一个默认组只在删除成功后让系统回到 needs_storage，不会静默清空业务绑定。
• 当前服务端实现和中英文管理文案已保持同一语义；对应用户/团队绑定保护和迁移后删除测试均已通过。

验证：cargo test --test storage（206 passed, 1 ignored）、cargo check -j 2、focused frontend policy/group tests、git diff --check。