diff --git a/.trellis/spec/hyb-oa/frontend-react-vite-design.md b/.trellis/spec/hyb-oa/frontend-react-vite-design.md
index 4a703166..42a8aa1a 100644
--- a/.trellis/spec/hyb-oa/frontend-react-vite-design.md
+++ b/.trellis/spec/hyb-oa/frontend-react-vite-design.md
@@ -19,6 +19,10 @@ and verification contracts. Do not copy broad aesthetic guidance from
 - When `frontend-design` and older project visual rules conflict, follow
   `frontend-design` for visual direction while preserving security, privacy,
   Trellis, deployment and business data boundaries.
+- Default product framing is a small-team Chinese workbench for domestic tech
+  startups with fewer than 10 people. User-facing copy should be natural
+  Chinese; avoid English product words such as `Portal`, `Dashboard` and
+  `Workflow` unless they are internal test fixtures or technical identifiers.
 - PC pages should keep dense but orderly OA layouts: clear header, filters,
   table/list, status, details and predictable actions.
 - Mobile pages must reuse the existing unified mobile shell, card/list rows,
@@ -201,12 +205,19 @@ point and prevents each route from inventing a different title/action layout.
 reimbursement detail should make the current user task obvious before exposing
 secondary operations:
 
+- Treat the primary persona as a small-team operator wearing multiple hats, not
+  a dedicated OA clerk. The first screen should reduce decision cost for a
+  founder, finance/admin owner, project lead or employee who may switch roles
+  during the same session.
 - First visible task surface should answer: what needs attention, what can be
   started, and where recent progress lives.
 - Keep one primary action in the first screen. Allow at most two secondary
   entries; move export, batch, delete, templates, complex filters, statistics
   and admin/finance tools into `更多`, `高级 / 台账`, detail actions, role-only
   panels or confirmation dialogs.
+- Do not turn small-team workflows into platform-builder surfaces by default:
+  approval designers, broad configuration matrices, multi-level enterprise
+  dashboards and batch admin consoles need explicit Trellis task scope.
 - Explanation text should only be default-visible for risk, exception or empty
   states. Do not use repeated subtitles or notice cards to explain normal
   workflow steps that the layout can express.
diff --git a/.trellis/spec/hyb-oa/project-governance.md b/.trellis/spec/hyb-oa/project-governance.md
index 5e60ed41..ff66799f 100644
--- a/.trellis/spec/hyb-oa/project-governance.md
+++ b/.trellis/spec/hyb-oa/project-governance.md
@@ -19,6 +19,27 @@ tasks after TRELLIS2.
 - Keep edits scoped to the current Trellis task.
 - Commit in Chinese and include the Trellis task name or task ID.
 
+## Solo Developer Operating Mode
+
+hyb-oa is developed and maintained by one primary developer. Optimize every
+feature, improvement and refactor for low error rate, fast review, clear
+rollback and future self-maintenance.
+
+- Prefer small, independently verifiable slices over broad rewrites.
+- Before adding a new capability, ask whether it is high-frequency for a
+  domestic tech startup with fewer than 10 people; low-frequency capability
+  should be deferred, hidden behind advanced/admin entry, or kept as a manual
+  procedure unless the current Trellis task explicitly approves it.
+- Prefer existing modules, shared components, scripts and runbooks over new
+  abstractions. Add platform-like infrastructure only when it removes real
+  repeated work or reduces operational risk.
+- Every task should state the minimum useful validation command set before
+  implementation; do not rely on manual memory for gates.
+- Keep rollout and rollback obvious. For public-facing changes, record the
+  exact commit, deployment command, public check and whether the user can test.
+- Capture reusable lessons in `docs/`, `.trellis/spec/` or the current task
+  while they are fresh; do not depend on chat history for project rules.
+
 ## Stop Conditions
 
 - Production config, deployment, database reset, migration drift, real data
diff --git a/.trellis/tasks/05-29-small-team-solo-dev-rules/check.jsonl b/.trellis/tasks/05-29-small-team-solo-dev-rules/check.jsonl
new file mode 100644
index 00000000..e2a3828f
--- /dev/null
+++ b/.trellis/tasks/05-29-small-team-solo-dev-rules/check.jsonl
@@ -0,0 +1,3 @@
+{"file": ".trellis/spec/hyb-oa/project-governance.md", "reason": "Check project governance and solo-developer workflow constraints."}
+{"file": ".trellis/spec/hyb-oa/frontend-react-vite-design.md", "reason": "Check frontend rules stay product-specific and do not duplicate broad visual design guidance."}
+{"file": ".trellis/spec/hyb-oa/docs-and-evidence.md", "reason": "Check documentation update follows source-of-truth boundaries."}
diff --git a/.trellis/tasks/05-29-small-team-solo-dev-rules/implement.jsonl b/.trellis/tasks/05-29-small-team-solo-dev-rules/implement.jsonl
new file mode 100644
index 00000000..739827a2
--- /dev/null
+++ b/.trellis/tasks/05-29-small-team-solo-dev-rules/implement.jsonl
@@ -0,0 +1,3 @@
+{"file": ".trellis/spec/hyb-oa/project-governance.md", "reason": "Project-level Trellis and solo-developer governance rules."}
+{"file": ".trellis/spec/hyb-oa/frontend-react-vite-design.md", "reason": "Frontend product simplification and task-first UI constraints."}
+{"file": ".trellis/spec/hyb-oa/docs-and-evidence.md", "reason": "Documentation source-of-truth and evidence hygiene for rule updates."}
diff --git a/.trellis/tasks/05-29-small-team-solo-dev-rules/implement.md b/.trellis/tasks/05-29-small-team-solo-dev-rules/implement.md
new file mode 100644
index 00000000..c0966024
--- /dev/null
+++ b/.trellis/tasks/05-29-small-team-solo-dev-rules/implement.md
@@ -0,0 +1,22 @@
+# Implementation Notes
+
+## Sequence
+
+1. Read existing product and Trellis rule sources.
+2. Update `docs/产品设计规则.md` with the confirmed product background:
+   domestic tech startup, fewer than 10 people, natural Chinese workbench,
+   overlapping roles.
+3. Update `.trellis/spec/hyb-oa/frontend-react-vite-design.md` with frontend
+   decision rules for small-team task-first pages and avoiding unapproved
+   platform-builder surfaces.
+4. Update `.trellis/spec/hyb-oa/project-governance.md` with solo-developer
+   operating rules: small slices, validation first, reuse, rollback and
+   durable rule capture.
+5. Run Trellis task validation, governance and whitespace checks.
+
+## Safety Boundaries
+
+- Documentation/spec-only change.
+- No product code changes.
+- No deployment.
+- No real data access or writes.
diff --git a/.trellis/tasks/05-29-small-team-solo-dev-rules/prd.md b/.trellis/tasks/05-29-small-team-solo-dev-rules/prd.md
new file mode 100644
index 00000000..3e4b4abf
--- /dev/null
+++ b/.trellis/tasks/05-29-small-team-solo-dev-rules/prd.md
@@ -0,0 +1,74 @@
+# 沉淀小团队产品与单人开发规则
+
+## Goal
+
+将用户确认的长期背景沉淀为项目级规则：hyb-oa 面向国内、小于 10 人的科技初创公司，且系统由单人长期开发维护。后续功能开发、改进和重构必须默认遵守“小团队中文工作台”和“单人开发低风险工作流”。
+
+## Scope
+
+- 更新 `docs/产品设计规则.md` 中的用户与使用事实。
+- 更新 `.trellis/spec/hyb-oa/frontend-react-vite-design.md` 中 A 类页面和前端改动的默认判断规则。
+- 更新 `.trellis/spec/hyb-oa/project-governance.md` 中单人开发工作流约束。
+- 不改业务功能、不改前端页面代码、不部署。
+
+## What I Already Know
+
+- 用户确认当前系统面向“国内小于 10 人的科技初创公司”，并强调界面要注意中文。
+- 用户确认后续功能开发、改进、重构都要考虑该背景。
+- 用户确认系统由一个人开发维护，需要整理工作流，减少出错、提高效率。
+- `docs/产品设计规则.md` 已记录“10 人以下国内科技公司、角色重叠、审批链短、使用频次高”。
+- `.trellis/spec/hyb-oa/frontend-react-vite-design.md` 已包含 A 类页面“任务优先、低频能力收起”的规则。
+- `.trellis/spec/hyb-oa/project-governance.md` 已包含 Trellis-first 和提交治理规则，但还缺少单人开发低风险策略。
+
+## Requirements
+
+- 明确产品默认定位：
+  - 国内、小于 10 人、科技初创公司。
+  - 一人多岗，老板、财务、行政、项目负责人、员工角色会重叠。
+  - 中文优先，避免英文产品词残留和大企业 OA 式复杂表达。
+- 明确功能和重构判断：
+  - 高频真实工作优先；低频管理能力收起但不消失。
+  - 默认不做平台化、审批设计器化、大企业多层级配置化，除非当前任务明确批准。
+  - 页面首屏优先回答“今天要办什么、谁卡住了、下一步点哪里”。
+- 明确单人开发工作流：
+  - 小批量、可验证、可回滚。
+  - 新能力优先复用现有模块和共享组件。
+  - 每次改动必须有清晰验收和必要自动化门禁。
+  - 稳定经验沉淀到 docs/spec/task，减少靠记忆维护。
+
+## Acceptance Criteria
+
+- [x] 产品定位规则写入 `docs/产品设计规则.md`。
+- [x] 前端重构默认判断写入 `.trellis/spec/hyb-oa/frontend-react-vite-design.md`。
+- [x] 单人开发低风险工作流写入 `.trellis/spec/hyb-oa/project-governance.md`。
+- [x] Trellis task validate 通过。
+- [x] Trellis governance 通过。
+- [x] `git diff --check` 通过。
+
+## Definition Of Done
+
+- 后续会话可以直接从 docs/spec 读取该背景，不需要依赖聊天记忆。
+- 文档只记录产品事实和工程规则，不新增视觉审美细则。
+- 本任务完成后提交中文 commit，commit message 引用任务名。
+
+## Out Of Scope
+
+- 不调整现有页面。
+- 不新增前端组件。
+- 不改权限、审批、状态机或数据库。
+- 不部署公网。
+
+## Test Plan
+
+```bash
+python3 ./.trellis/scripts/task.py validate 05-29-small-team-solo-dev-rules
+node scripts/qa/check-trellis-governance.mjs
+git diff --check
+```
+
+## Implementation Plan
+
+1. 在产品事实源中补充小团队中文工作台定位。
+2. 在前端规约中补充功能/页面重构的默认取舍规则。
+3. 在项目治理规约中补充单人开发低风险工作流。
+4. 跑文档和 Trellis 检查。
diff --git a/.trellis/tasks/05-29-small-team-solo-dev-rules/task.json b/.trellis/tasks/05-29-small-team-solo-dev-rules/task.json
new file mode 100644
index 00000000..ed665f2f
--- /dev/null
+++ b/.trellis/tasks/05-29-small-team-solo-dev-rules/task.json
@@ -0,0 +1,30 @@
+{
+  "id": "small-team-solo-dev-rules",
+  "name": "small-team-solo-dev-rules",
+  "title": "沉淀小团队产品与单人开发规则",
+  "description": "沉淀国内小于10人科技初创公司产品定位，以及单人开发低风险工作流。",
+  "status": "in_progress",
+  "dev_type": null,
+  "scope": "docs-spec-governance",
+  "package": null,
+  "priority": "P2",
+  "creator": "shunli",
+  "assignee": "shunli",
+  "createdAt": "2026-05-29",
+  "completedAt": null,
+  "branch": null,
+  "base_branch": "main",
+  "worktree_path": null,
+  "commit": null,
+  "pr_url": null,
+  "subtasks": [],
+  "children": [],
+  "parent": null,
+  "relatedFiles": [
+    "docs/产品设计规则.md",
+    ".trellis/spec/hyb-oa/frontend-react-vite-design.md",
+    ".trellis/spec/hyb-oa/project-governance.md"
+  ],
+  "notes": "",
+  "meta": {}
+}
\ No newline at end of file
diff --git a/docs/产品设计规则.md b/docs/产品设计规则.md
index 304f5765..6d110359 100644
--- a/docs/产品设计规则.md
+++ b/docs/产品设计规则.md
@@ -14,11 +14,13 @@
 
 ## 用户与使用事实
 
-- 目标用户是 10 人以下的国内科技公司，角色重叠、审批链短、使用频次高。
+- 目标用户是国内、小于 10 人的科技初创公司，角色重叠、审批链短、使用频次高。
+- 默认使用者不是专职 OA 操作员，而是一人多岗：负责人、财务、行政、项目负责人和员工职责可能集中在少数人身上。
+- 产品默认形态是“小团队中文工作台”：先帮助用户看清今天要办什么、谁卡住了、下一步点哪里，再提供低频管理能力。
 - PC 端主要服务批量查看、对账、审批、财务复核、导出和管理配置。
 - 手机/企业微信端主要服务提交、补材料、查状态、处理待办和从消息直达业务详情。
 - 系统应优先支持真实工作流，不做营销站式介绍页，也不把低频配置入口放到高频员工路径里。
-- 页面可见内容应使用国内 OA 常见表达，例如待处理、草稿、审批中、已通过、已支付、已驳回、提交、保存、删除、撤回。
+- 页面可见内容应使用自然中文和国内 OA 常见表达，例如待处理、草稿、审批中、已通过、已支付、已驳回、提交、保存、删除、撤回；避免把 `Portal`、`Dashboard`、`Workflow` 等英文产品词作为默认用户文案。
 
 ## 页面职责分层