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

plugin/core/models/audit.ts

@@ -0,0 +1,10 @@
+export interface AuditLogEntry {
+  id: string;
+  ts: string;
+  actorId: string;
+  action: string;
+  target?: string;
+  status: 'ok' | 'error';
+  message?: string;
+  meta?: Record<string, unknown>;
+}

plugin/core/models/errors.ts

@@ -0,0 +1,19 @@
+export type ErrorCode =
+  | 'PERMISSION_DENIED'
+  | 'NOT_FOUND'
+  | 'ALREADY_EXISTS'
+  | 'VALIDATION_ERROR'
+  | 'FIELD_NOT_QUERYABLE'
+  | 'INVALID_SUPERVISOR'
+  | 'REGISTRAR_DENIED';
+
+export class YonexusError extends Error {
+  constructor(
+    public readonly code: ErrorCode,
+    message: string,
+    public readonly details?: Record<string, unknown>
+  ) {
+    super(message);
+    this.name = 'YonexusError';
+  }
+}

plugin/core/models/types.ts

@@ -0,0 +1,93 @@
+export type Role = "org_admin" | "dept_admin" | "team_lead" | "agent";
+
+export interface Organization {
+  id: string;
+  name: string;
+}
+
+export interface Department {
+  id: string;
+  name: string;
+  orgId: string;
+}
+
+export interface Team {
+  id: string;
+  name: string;
+  deptId: string;
+}
+
+export interface Agent {
+  id: string;
+  name: string;
+  roles: Role[];
+}
+
+export interface Identity {
+  id: string;
+  agentId: string;
+  deptId: string;
+  teamId: string;
+  meta: Record<string, string>;
+}
+
+export interface Supervisor {
+  agentId: string;
+  supervisorId: string;
+}
+
+export interface SchemaField {
+  type: "string";
+  queryable: boolean;
+}
+
+export interface YonexusSchema {
+  [field: string]: SchemaField;
+}
+
+export interface StoreState {
+  organizations: Organization[];
+  departments: Department[];
+  teams: Team[];
+  agents: Agent[];
+  identities: Identity[];
+  supervisors: Supervisor[];
+}
+
+export interface Actor {
+  agentId: string;
+}
+
+export type Action =
+  | "create_organization"
+  | "create_department"
+  | "create_team"
+  | "register_agent"
+  | "assign_identity"
+  | "set_supervisor"
+  | "query_agents";
+
+export type DocsScope = "organization" | "department" | "team" | "agent";
+export type DocsTopic = "docs" | "notes" | "knowledge" | "rules" | "lessons" | "workflows";
+
+export interface Scope {
+  orgId?: string;
+  deptId?: string;
+  teamId?: string;
+}
+
+export interface QueryFilter {
+  field: string;
+  op: "eq" | "contains" | "regex";
+  value: string;
+}
+
+export interface QueryOptions {
+  limit?: number;
+  offset?: number;
+}
+
+export interface QueryInput {
+  filters: QueryFilter[];
+  options?: QueryOptions;
+}