docs: 添加 Phase 1 完整实施计划和 OpenSpec

- 添加项目级 CLAUDE.md 和 AGENTS.md 配置
- 添加完整实施计划（docs/architecture/implementation-detail.md）
- 创建 OpenSpec phase-1-infrastructure：
  - proposal.md: 需求和方案
  - design.md: 架构设计
  - specs/functional-specs.md: 功能规格
  - tasks.md: 21 个任务清单
  - decisions.md: grill 阶段决策记录
  - .commit: 标记为 Committed OpenSpec

OpenSpec 已通过 sm-flow 完整流程（clarify → context → propose → grill → specify → audit → commit）

CLAUDE.md

@@ -0,0 +1,157 @@
+# CLAUDE.md  
+  
+## Defaults  
+  
+- Reply in **Chinese** unless I explicitly ask for English.  
+- No emojis.  
+- Do not truncate important outputs (logs, diffs, stack traces, commands, or critical reasoning that affects  
+  safety/correctness).  
+  
+## Refactor policy (legacy code)  
+  
+- When existing code is a "big ball of mud" (hard to maintain, clearly bad design,  
+  full of hacks), prefer a **clean, full refactor** over stacking more patches  
+  on top of it.  
+- A refactor may completely replace internal structure  
+  (functions, modules, classes, data flow).  
+- By default, try to preserve externally observable behaviour.  
+  If you intentionally change behaviour or protocols, you MUST:  
+  - Call out clearly that this is a **behaviour/protocol change**.  
+  - Explain why the change is necessary and which code paths/consumers are affected.  
+  - Update or add tests to cover the new behaviour.  
+  
+## Before touching code (mandatory)  
+  
+Find reuse opportunities + Trace the call/dependency chain and impact radius:  
+  
+- Use semantic code search first via `codebase-retrieval` tool.  
+- Confirm understanding with LSP: `goToDefinition`, `findReferences`.  
+- Use Grep/Glob for verifying and understanding additional code snippets.  
+  
+## Red lines  
+  
+- No copy-paste duplication.  
+- Do not break existing externally observable behaviour **unless**:  
+  - It is part of a deliberate refactor as described in the refactor policy, and  
+  - You clearly document the behavioural change and its impact.  
+- Do not proceed with a known-wrong approach.  
+- Critical paths must have explicit error handling.  
+- Never implement "blindly": always confirm understanding via code reading + references.  
+  
+## Task sizing  
+  
+- **Simple**  
+- Criteria — single file, clear requirement, < 20 lines changed,  
+  clearly local impact.  
+- Handling — after doing the "Before touching code" steps  
+  (research + impact analysis + internal three-question checklist),  
+  you may execute directly with minimal explanation.  
+- A very short context line is enough;  
+  a full breakdown of the checklist is not required.  
+  
+- **Medium**  
+    - Criteria — 2–5 files, or requires some research, or impact is not obviously local.  
+  - Handling — write a short plan (bullet points) → then implement.  
+  - Briefly surface the checklist result in the reply  
+      (1–3 short lines describing real issue, key reuse, and main impact).  
+  
+- **Complex**  
+    - Criteria — architecture changes, multiple modules, high uncertainty or risk.  
+  - Handling — follow this workflow:  
+        1. **RESEARCH**: inspect code and facts only (no proposals yet).  
+        2. **PLAN**: present options + tradeoffs + recommendation;  
+           use `AskUserQuestion` actively to align with the user;  
+           wait for user's confirmation.  
+        3. **EXECUTE**: implement exactly the approved plan.  
+        4. **REVIEW**: self-check (tests, edge cases, cleanup).  
+  
+## Git  
+  
+- Do not commit unless I explicitly ask.  
+- Do not push unless I explicitly ask.  
+- Before writing a commit message, glance at a few recent commits and match the repo's style:  
+    - `git log -n 5 --oneline`  
+- If there is no obvious existing style, use this default format:  
+    - `<type>(<scope>): <description>`  
+- Before any commit: run `git diff` and confirm the exact scope of changes.  
+- Never force-push to `main` / `master` unless the user approves.  
+- Do not add attribution lines in commit messages.  
+  
+## Security  
+  
+- Never hardcode secrets (keys/passwords/tokens).  
+- Never commit `.env` files or any credentials.  
+- Validate user input at trust boundaries (APIs, CLIs, external data sources).  
+  
+## Quality & cleanup  
+  
+- Prefer clarity and simplicity first (KISS); apply DRY to remove obvious  
+  copy-paste duplication when it does not hurt readability.  
+- If you change a function signature, update **all** call sites.  
+- After changes:  
+  - Remove temporary files.  
+  - Remove dead/commented-out code.  
+  - Remove unused imports.  
+  - Remove debug logging that is no longer needed.  
+- Run the smallest meaningful verification (lint/test/build) for the parts you touched.  
+  
+## Windows / PowerShell (if used)  
+  
+- PowerShell does not support `&&`; use `;` to chain commands.  
+- Quote paths that contain spaces or non-ASCII characters.  
+  
+## Baisc Infos  
+  
+Unless directly relevant to the user's current question, you should avoid proactively mentioning, illustrating, or  
+trailing off into the following information in 99% of cases:  
+  
+## Documentation  
+  
+- 所有产生的文档（需求文档、计划文档、分析文档等）统一放到项目内的 `.docs` 文件夹中  
+- 文档目录结构：  
+- 不要将文档放到用户目录（如 `C:\Users\EDY\.claude\`）中
+
+
+<!-- gitnexus:start -->
+# GitNexus — Code Intelligence
+
+This project is indexed by GitNexus as **SuperBizAgent-java** (1001 symbols, 2043 relationships, 78 execution flows). Use the GitNexus MCP tools to understand code, assess impact, and navigate safely.
+
+> If any GitNexus tool warns the index is stale, run `npx gitnexus analyze` in terminal first.
+
+## Always Do
+
+- **MUST run impact analysis before editing any symbol.** Before modifying a function, class, or method, run `gitnexus_impact({target: "symbolName", direction: "upstream"})` and report the blast radius (direct callers, affected processes, risk level) to the user.
+- **MUST run `gitnexus_detect_changes()` before committing** to verify your changes only affect expected symbols and execution flows.
+- **MUST warn the user** if impact analysis returns HIGH or CRITICAL risk before proceeding with edits.
+- When exploring unfamiliar code, use `gitnexus_query({query: "concept"})` to find execution flows instead of grepping. It returns process-grouped results ranked by relevance.
+- When you need full context on a specific symbol — callers, callees, which execution flows it participates in — use `gitnexus_context({name: "symbolName"})`.
+
+## Never Do
+
+- NEVER edit a function, class, or method without first running `gitnexus_impact` on it.
+- NEVER ignore HIGH or CRITICAL risk warnings from impact analysis.
+- NEVER rename symbols with find-and-replace — use `gitnexus_rename` which understands the call graph.
+- NEVER commit changes without running `gitnexus_detect_changes()` to check affected scope.
+
+## Resources
+
+| Resource | Use for |
+|----------|---------|
+| `gitnexus://repo/SuperBizAgent-java/context` | Codebase overview, check index freshness |
+| `gitnexus://repo/SuperBizAgent-java/clusters` | All functional areas |
+| `gitnexus://repo/SuperBizAgent-java/processes` | All execution flows |
+| `gitnexus://repo/SuperBizAgent-java/process/{name}` | Step-by-step execution trace |
+
+## CLI
+
+| Task | Read this skill file |
+|------|---------------------|
+| Understand architecture / "How does X work?" | `.claude/skills/gitnexus/gitnexus-exploring/SKILL.md` |
+| Blast radius / "What breaks if I change X?" | `.claude/skills/gitnexus/gitnexus-impact-analysis/SKILL.md` |
+| Trace bugs / "Why is X failing?" | `.claude/skills/gitnexus/gitnexus-debugging/SKILL.md` |
+| Rename / extract / split / refactor | `.claude/skills/gitnexus/gitnexus-refactoring/SKILL.md` |
+| Tools, resources, schema reference | `.claude/skills/gitnexus/gitnexus-guide/SKILL.md` |
+| Index, status, clean, wiki CLI commands | `.claude/skills/gitnexus/gitnexus-cli/SKILL.md` |
+
+<!-- gitnexus:end -->