chore: land tree view-state, vault, Pi module split, and repo hygiene

Persist PageTree expand state via control-plane view-state and align
chevron/DOM with restored expansion; keep Sidex-style shallow page-tree
scan and drop the unused recursive scanner that only added cargo noise.

Add password vault workbench routes/runtime/skill/CLI, split page_ai_pi
into a module package, and retire Hermes/ACP/OpenHub recycle + root
harness evidence from the index while gitignoring recycle and local
diag dumps.

Archive superseded design/bugs docs under old/, point architecture at
ARCHITECTURE.md, and refresh smokes for Pi S1–S7, vault, and editor
regressions so the working tree can stay clean.

.gitignore

@@ -1,12 +1,12 @@
-node_modules/
-**/node_modules/
-.next/
-**/.next/
-dist/
-**/dist/
-build/
-**/build/
-.turbo/
+node_modules/
+**/node_modules/
+.next/
+**/.next/
+dist/
+**/dist/
+build/
+**/build/
+.turbo/
 pnpm-debug.log*
 npm-debug.log*
 yarn-debug.log*
@@ -30,50 +30,58 @@ env-archive/
 /.pi/
 /tmp-block-handle-qa.js
 
+# Retired root-level agent/harness/browser evidence artifacts.
+/REASONIX.md
+/reasonix.toml
+/playwright-snapshot-auth.md
+/auth-console.txt
+/auth-network.txt
+/harness-init.sh
+
 *.local
 tmp/
 temp/
-**/.venv/
-.venv/
-**/__pycache__/
-__pycache__/
-# Convex 本机开发临时目录
-**/.convex-tmp/
-# 大模型文件，防止超出 LFS 配额
-services/mineru/models/
-*.safetensors
-# ONLYOFFICE 挂载/同步目录（体积很大，禁止入库）
-/onlyoffice-web-apps/
-/onlyoffice-plugins/
-/onlyoffice-data/
-/onlyoffice-fonts/
-/onlyoffice-pg-data/
-# ONLYOFFICE 现已移至 src/components/onlyoffice 下，整目录忽略
-/src/components/onlyoffice/
-# 参考资料目录
-cankao/
-# services 整体忽略（包含本地模型与临时服务）
-/services/
-**/test/
-pw-tests/**
-pw-tests/  
-wolai-frontend/public/documents/
-wolai-frontend/public/documents/**
-artifacts/
-artifacts/**
-tmp
-
-# Rust 本地构建与调试产物
-/rust/target/
-/rust/spikes/**/target/
-
-# Harness 本地运行状态/调试产物
-/.harness-active
-/.harness-stop-counter
-/harness-tasks.json.bak
-
-# pnpm 本地缓存
-/.pnpm-store/
+**/.venv/
+.venv/
+**/__pycache__/
+__pycache__/
+# Convex 本机开发临时目录
+**/.convex-tmp/
+# 大模型文件，防止超出 LFS 配额
+services/mineru/models/
+*.safetensors
+# ONLYOFFICE 挂载/同步目录（体积很大，禁止入库）
+/onlyoffice-web-apps/
+/onlyoffice-plugins/
+/onlyoffice-data/
+/onlyoffice-fonts/
+/onlyoffice-pg-data/
+# ONLYOFFICE 现已移至 src/components/onlyoffice 下，整目录忽略
+/src/components/onlyoffice/
+# 参考资料目录
+cankao/
+# services 整体忽略（包含本地模型与临时服务）
+/services/
+**/test/
+pw-tests/**
+pw-tests/  
+wolai-frontend/public/documents/
+wolai-frontend/public/documents/**
+artifacts/
+artifacts/**
+tmp
+
+# Rust 本地构建与调试产物
+/rust/target/
+/rust/spikes/**/target/
+
+# Harness 本地运行状态/调试产物
+/.harness-active
+/.harness-stop-counter
+/harness-tasks.json.bak
+
+# pnpm 本地缓存
+/.pnpm-store/
 .playwright-mcp
 rust/spikes/leptos-tiptap-spike/trunk-8123.err
 rust/spikes/leptos-tiptap-spike/trunk-8123.out
@@ -85,16 +93,22 @@ design/05-editor-mainline/reference-code
 /ai-sessions/
 /filetree-*.png
 /task*-*.png
+/qa-*.png
 
 # 本地 Wolai 对标取证与截图产物
 /test-results/
 /wolai-*.png
 /wolai-*.md
-
-# 任务型浏览器 smoke 只作本地验收，不纳入项目运行面
-/scripts/task*-wolai-*.js
-/scripts/task*-rust-web-wolai-*-smoke.js
-
-# 下载的 Wolai 静态页面参考包，不作为可维护设计稿入库
-design/design/html/
+
+# 任务型浏览器 smoke 只作本地验收，不纳入项目运行面
+/scripts/task*-wolai-*.js
+/scripts/task*-rust-web-wolai-*-smoke.js
+
+# 本地一次性诊断脚本与截图取证（不入库）
+/scripts/_diag-*.js
+/scripts/*-diag/
+/scripts/page-tree-expand-diag/
+
+# 下载的 Wolai 静态页面参考包，不作为可维护设计稿入库
+design/design/html/
 recycle