refactor: move memory plugin state into plugin host

src/plugins/memory-state.ts

@@ -0,0 +1,70 @@
+import type { OpenClawConfig } from "../config/config.js";
+import type { MemoryCitationsMode } from "../config/types.memory.js";
+
+export type MemoryPromptSectionBuilder = (params: {
+  availableTools: Set<string>;
+  citationsMode?: MemoryCitationsMode;
+}) => string[];
+
+export type MemoryFlushPlan = {
+  softThresholdTokens: number;
+  forceFlushTranscriptBytes: number;
+  reserveTokensFloor: number;
+  prompt: string;
+  systemPrompt: string;
+  relativePath: string;
+};
+
+export type MemoryFlushPlanResolver = (params: {
+  cfg?: OpenClawConfig;
+  nowMs?: number;
+}) => MemoryFlushPlan | null;
+
+type MemoryPluginState = {
+  promptBuilder?: MemoryPromptSectionBuilder;
+  flushPlanResolver?: MemoryFlushPlanResolver;
+};
+
+const memoryPluginState: MemoryPluginState = {};
+
+export function registerMemoryPromptSection(builder: MemoryPromptSectionBuilder): void {
+  memoryPluginState.promptBuilder = builder;
+}
+
+export function buildMemoryPromptSection(params: {
+  availableTools: Set<string>;
+  citationsMode?: MemoryCitationsMode;
+}): string[] {
+  return memoryPluginState.promptBuilder?.(params) ?? [];
+}
+
+export function getMemoryPromptSectionBuilder(): MemoryPromptSectionBuilder | undefined {
+  return memoryPluginState.promptBuilder;
+}
+
+export function registerMemoryFlushPlanResolver(resolver: MemoryFlushPlanResolver): void {
+  memoryPluginState.flushPlanResolver = resolver;
+}
+
+export function resolveMemoryFlushPlan(params: {
+  cfg?: OpenClawConfig;
+  nowMs?: number;
+}): MemoryFlushPlan | null {
+  return memoryPluginState.flushPlanResolver?.(params) ?? null;
+}
+
+export function getMemoryFlushPlanResolver(): MemoryFlushPlanResolver | undefined {
+  return memoryPluginState.flushPlanResolver;
+}
+
+export function restoreMemoryPluginState(state: MemoryPluginState): void {
+  memoryPluginState.promptBuilder = state.promptBuilder;
+  memoryPluginState.flushPlanResolver = state.flushPlanResolver;
+}
+
+export function clearMemoryPluginState(): void {
+  memoryPluginState.promptBuilder = undefined;
+  memoryPluginState.flushPlanResolver = undefined;
+}
+
+export const _resetMemoryPluginState = clearMemoryPluginState;