refactor: restructure project layout and add install.mjs

- Move src/ → plugin/ with subdirectories:
  - plugin/core/ (business logic, models, store, permissions, utils, memory)
  - plugin/tools/ (query, resources)
  - plugin/commands/ (placeholder for slash commands)
  - plugin/hooks/ (placeholder for lifecycle hooks)
  - plugin/index.ts (wiring layer only, no business logic)
- Add install.mjs with --install, --uninstall, --openclaw-profile-path
- Add skills/ and docs/ root directories
- Move planning docs (PLAN.md, FEAT.md, AGENT_TASKS.md) to docs/
- Remove old scripts/install.sh
- Update tsconfig rootDir: src → plugin
- Update README.md and README.zh.md with new layout
- Bump version to 0.2.0
- All tests pass

docs/FEAT.md

@@ -0,0 +1,86 @@
+# FEAT — Yonexus Feature List
+
+## Existing Features
+
+### Core Model & Storage
+- Organization / Department / Team / Agent / Identity / Supervisor data model
+- In-memory runtime with JSON persistence (`data/org.json`)
+- Import/export of structure data
+
+### Authorization
+- Role model: `org_admin`, `dept_admin`, `team_lead`, `agent`
+- `authorize(action, actor, scope)` permission check
+- Registrar whitelist (`registrars`) and bootstrap registration support
+
+### Core APIs
+- `createOrganization(actor, name)`
+- `createDepartment(actor, name, orgId)`
+- `createTeam(actor, name, deptId)`
+- `registerAgent(actor, agentId, name, roles?)`
+- `assignIdentity(actor, agentId, deptId, teamId, meta)`
+- `setSupervisor(actor, agentId, supervisorId, deptId?)`
+- `whoami(agentId)`
+- `queryAgents(actor, scope, query)`
+
+### Query & Search
+- Query ops: `eq`, `contains`, `regex`
+- Schema `queryable` whitelist enforcement
+- Pagination (`limit`, `offset`)
+- Basic query performance optimization (regex cache + ordered filter eval)
+
+### Management & Audit
+- `renameDepartment`, `renameTeam`, `migrateTeam`, `deleteDepartment`, `deleteTeam`
+- Structured errors via `YonexusError`
+- In-memory audit log (`listAuditLogs`)
+
+### Scope Memory
+- Scope memory adapter:
+  - `scope_memory.put(scopeId, text, metadata)`
+  - `scope_memory.search(scopeId, query, limit)`
+
+### Developer Experience
+- `README.md` + `README.zh.md`
+- Example data (`examples/sample-data.json`)
+- Demo script (`scripts/demo.ts`)
+- Smoke test (`tests/smoke.ts`)
+
+---
+
+## New Features (from NEW_FEAT)
+
+### 1) Filesystem Resource Layout
+Data-only filesystem tree under:
+- `${openclaw dir}/yonexus/organizations/<org-name>/...`
+
+Auto-create (idempotent):
+- On `createOrganization`:
+  - `teams/`, `docs/`, `notes/`, `knowledge/`, `rules/`, `lessons/`, `workflows/`
+- On `createTeam`:
+  - `teams/<team-name>/agents/`, `docs/`, `notes/`, `knowledge/`, `rules/`, `lessons/`, `workflows/`
+- On `assignIdentity`:
+  - `teams/<team-name>/agents/<agent-id>/docs|notes|knowledge|rules|lessons|workflows`
+
+### 2) Document Query Tool
+New API:
+- `getDocs(scope, topic, keyword)`
+
+Parameters:
+- `scope`: `organization | department | team | agent`
+- `topic`: `docs | notes | knowledge | rules | lessons | workflows`
+- `keyword`: regex string
+
+Behavior:
+- Read-only search by filename regex under filesystem resources
+- Structured output:
+  - `----ORG`
+  - `----DEPT`
+  - `----TEAM`
+  - `----AGENT`
+- Invalid regex returns structured error (`YonexusError: VALIDATION_ERROR`)
+
+## Notes
+- `${openclaw dir}` resolution order:
+  1. `YonexusOptions.openclawDir`
+  2. `OPENCLAW_DIR` env
+  3. `${HOME}/.openclaw`
+- Plugin code is not written into `${openclaw dir}/yonexus`; only data folders/files are used there.