chore: add continuity plugin package skeleton

plugins/continuity/HOOK.md

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+# HOOK.md
+
+This document reserves the hook adapter contract for the continuity plugin MVP.
+
+## Target adapter
+
+Primary MVP integration target:
+
+- `force-recall`
+
+## Planned responsibilities
+
+- derive continuity input from hook context
+- invoke the plugin evaluator
+- return a prompt block / gate result without duplicating continuity rules
+
+## Current status
+
+- contract placeholder only
+- implementation deferred to later plan tasks

plugins/continuity/README.md

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+# Continuity Plugin (MVP)
+
+This package is the skeleton for extracting the current approved-plan continuity hard gate into an installable plugin.
+
+## MVP status
+
+- Task 2: package skeleton created
+- Task 3: config schema contract scaffolded
+- Plugin logic intentionally not implemented yet
+
+## Layout
+
+```text
+plugins/continuity/
+  README.md
+  README.zh-TW.md
+  HOOK.md
+  package.json
+  examples/
+  src/
+  test/
+```
+
+## Planned public surface
+
+- `src/config/schema.mjs`
+- `src/config/defaults.mjs`
+- `src/continuity/evaluator.mjs`
+- `src/continuity/receipt-validator.mjs`
+- `src/adapters/force-recall.mjs`
+- `src/index.mjs`
+
+## Example config
+
+See `examples/openclaw.continuity.example.json`.
+
+## Notes
+
+- Current terminal states preserved by default: `waiting_user`, `blocked`, `pending_verification`
+- Default receipt directory target: `state/approved-plan-continuity`
+- `npm test` is reserved for the full plugin test suite defined by the implementation plan

plugins/continuity/README.zh-TW.md

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+# Continuity Plugin（MVP）
+
+這個套件目前是把既有 approved-plan continuity hard gate 抽離成可安裝 plugin 的骨架。
+
+## MVP 狀態
+
+- Task 2：已建立 package skeleton
+- Task 3：已先放入 config schema contract 骨架
+- 目前刻意不實作 plugin logic
+
+## 目錄
+
+```text
+plugins/continuity/
+  README.md
+  README.zh-TW.md
+  HOOK.md
+  package.json
+  examples/
+  src/
+  test/
+```
+
+## 預計公開介面
+
+- `src/config/schema.mjs`
+- `src/config/defaults.mjs`
+- `src/continuity/evaluator.mjs`
+- `src/continuity/receipt-validator.mjs`
+- `src/adapters/force-recall.mjs`
+- `src/index.mjs`
+
+## 範例設定
+
+請參考 `examples/openclaw.continuity.example.json`。
+
+## 備註
+
+- 預設保留目前 terminal states：`waiting_user`、`blocked`、`pending_verification`
+- 預設 receipt 目錄：`state/approved-plan-continuity`
+- `npm test` 先保留給後續依計畫補上的完整測試流程

plugins/continuity/examples/approved-plan-receipt.example.json

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+{
+  "planId": "example-plan",
+  "currentTask": "task-01",
+  "nextDerivedAction": {
+    "kind": "delegate",
+    "target": "subagent",
+    "task": "placeholder"
+  },
+  "dispatchedAt": "2026-04-24T16:43:00+08:00",
+  "dispatchRunId": "example-run",
+  "childSessionKey": "session-placeholder",
+  "replyClosureState": "pending_verification"
+}

plugins/continuity/examples/openclaw.continuity.example.json

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+{
+  "enabled": true,
+  "planMatchers": [
+    "approved-plan"
+  ],
+  "legalTerminalStates": [
+    "waiting_user",
+    "blocked",
+    "pending_verification"
+  ],
+  "receiptDir": "state/approved-plan-continuity",
+  "requireRealDispatchReceipt": true,
+  "allowReplyClosureWithoutDispatch": false,
+  "debug": false,
+  "adapter": {
+    "forceRecall": {
+      "enabled": true,
+      "injectBlockLabel": "APPROVED_PLAN_CONTINUITY_GATE"
+    }
+  }
+}

plugins/continuity/package.json

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+{
+  "name": "@openclaw/plugin-continuity",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "description": "Continuity plugin MVP skeleton for approved-plan dispatch gating.",
+  "exports": {
+    ".": "./src/index.mjs"
+  },
+  "scripts": {
+    "test": "node test/continuity.config.test.mjs && node test/continuity.receipt-validator.test.mjs && node test/continuity.receipt-store.test.mjs && node test/continuity.evaluator.test.mjs && node test/continuity.plugin.test.mjs && node test/continuity.smoke.test.mjs"
+  }
+}

plugins/continuity/src/adapters/force-recall.mjs

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+export function createForceRecallContinuityAdapter() {
+  throw new Error('Not implemented: force-recall continuity adapter contract placeholder');
+}
+
+export function runForceRecallContinuityAdapter() {
+  throw new Error('Not implemented: force-recall continuity adapter contract placeholder');
+}

plugins/continuity/src/config/defaults.mjs

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+export const defaultConfig = Object.freeze({
+  enabled: true,
+  planMatchers: ['approved-plan'],
+  legalTerminalStates: ['waiting_user', 'blocked', 'pending_verification'],
+  receiptDir: 'state/approved-plan-continuity',
+  requireRealDispatchReceipt: true,
+  allowReplyClosureWithoutDispatch: false,
+  debug: false,
+  adapter: {
+    forceRecall: {
+      enabled: true,
+      injectBlockLabel: 'APPROVED_PLAN_CONTINUITY_GATE',
+    },
+  },
+});
+
+export function cloneDefaultConfig() {
+  return structuredClone(defaultConfig);
+}
+
+export default defaultConfig;

plugins/continuity/src/config/schema.mjs

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+import defaultConfig, { cloneDefaultConfig } from './defaults.mjs';
+
+export const continuityConfigSchema = Object.freeze({
+  enabled: 'boolean',
+  planMatchers: 'string[]',
+  legalTerminalStates: 'string[]',
+  receiptDir: 'string',
+  requireRealDispatchReceipt: 'boolean',
+  allowReplyClosureWithoutDispatch: 'boolean',
+  debug: 'boolean',
+  adapter: {
+    forceRecall: {
+      enabled: 'boolean',
+      injectBlockLabel: 'string',
+    },
+  },
+});
+
+function isPlainObject(value) {
+  return Boolean(value) && typeof value === 'object' && !Array.isArray(value);
+}
+
+export function normalizeContinuityConfig(input = {}) {
+  const base = cloneDefaultConfig();
+
+  if (!isPlainObject(input)) {
+    return base;
+  }
+
+  return {
+    ...base,
+    ...input,
+    planMatchers: Array.isArray(input.planMatchers) ? [...input.planMatchers] : [...base.planMatchers],
+    legalTerminalStates: Array.isArray(input.legalTerminalStates)
+      ? [...input.legalTerminalStates]
+      : [...base.legalTerminalStates],
+    adapter: {
+      ...base.adapter,
+      ...(isPlainObject(input.adapter) ? input.adapter : {}),
+      forceRecall: {
+        ...base.adapter.forceRecall,
+        ...(isPlainObject(input.adapter?.forceRecall) ? input.adapter.forceRecall : {}),
+      },
+    },
+  };
+}
+
+export function validateContinuityConfig(input = {}) {
+  const normalizedConfig = normalizeContinuityConfig(input);
+  return {
+    ok: true,
+    errors: [],
+    normalizedConfig,
+  };
+}
+
+export { defaultConfig };
+
+export default continuityConfigSchema;

plugins/continuity/src/continuity/evaluator.mjs

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+export function evaluateContinuity() {
+  throw new Error('Not implemented: continuity evaluator contract placeholder');
+}
+
+export function buildContinuityGateBlock() {
+  throw new Error('Not implemented: continuity gate block contract placeholder');
+}

plugins/continuity/src/continuity/receipt-validator.mjs

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+export function validateReceipt() {
+  throw new Error('Not implemented: receipt validator contract placeholder');
+}
+
+export function isValidReceipt() {
+  throw new Error('Not implemented: receipt validator contract placeholder');
+}

plugins/continuity/src/index.mjs

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+import { defaultConfig, cloneDefaultConfig } from './config/defaults.mjs';
+import {
+  continuityConfigSchema,
+  validateContinuityConfig,
+  normalizeContinuityConfig,
+} from './config/schema.mjs';
+import {
+  evaluateContinuity,
+  buildContinuityGateBlock,
+} from './continuity/evaluator.mjs';
+import {
+  validateReceipt,
+  isValidReceipt,
+} from './continuity/receipt-validator.mjs';
+import {
+  createForceRecallContinuityAdapter,
+  runForceRecallContinuityAdapter,
+} from './adapters/force-recall.mjs';
+
+export {
+  defaultConfig,
+  cloneDefaultConfig,
+  continuityConfigSchema,
+  validateContinuityConfig,
+  normalizeContinuityConfig,
+  evaluateContinuity,
+  buildContinuityGateBlock,
+  validateReceipt,
+  isValidReceipt,
+  createForceRecallContinuityAdapter,
+  runForceRecallContinuityAdapter,
+};
+
+export default {
+  name: '@openclaw/plugin-continuity',
+  defaultConfig,
+  continuityConfigSchema,
+  validateContinuityConfig,
+  normalizeContinuityConfig,
+  evaluateContinuity,
+  buildContinuityGateBlock,
+  validateReceipt,
+  isValidReceipt,
+  createForceRecallContinuityAdapter,
+  runForceRecallContinuityAdapter,
+};

plugins/continuity/test/.gitkeep

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+