diff --git a/extensions/memory-core/src/dreaming-command.test.ts b/extensions/memory-core/src/dreaming-command.test.ts
index 65aad3058882..ac3f0cc6c864 100644
--- a/extensions/memory-core/src/dreaming-command.test.ts
+++ b/extensions/memory-core/src/dreaming-command.test.ts
@@ -205,7 +205,7 @@ describe("memory-core /dreaming command", () => {
     // Dreaming is enabled by default; the fixture sets no explicit enabled flag.
     expect(result.text).toContain("- enabled: on (America/Los_Angeles)");
     expect(result.text).toContain("- sweep cadence: 15 */8 * * *");
-    expect(result.text).toContain("- promotion policy: score>=0.8, recalls>=3, uniqueQueries>=3");
+    expect(result.text).toContain("- promotion policy: score>=0.75, recalls>=3, uniqueQueries>=3");
     expect(harness.runtime.config.mutateConfigFile).not.toHaveBeenCalled();
   });
 
diff --git a/extensions/memory-core/src/dreaming-consolidation-artifacts.ts b/extensions/memory-core/src/dreaming-consolidation-artifacts.ts
new file mode 100644
index 000000000000..842d04c0a5ec
--- /dev/null
+++ b/extensions/memory-core/src/dreaming-consolidation-artifacts.ts
@@ -0,0 +1,107 @@
+// Memory Core plugin module owns consolidation preimages and operator summaries.
+import { createHash } from "node:crypto";
+import { updateDreamsFile } from "./dreaming-dreams-file.js";
+import {
+  readMemoryCoreWorkspaceEntries,
+  writeMemoryCoreWorkspaceEntries,
+  DREAMING_MEMORY_BACKUP_NAMESPACE,
+} from "./dreaming-state.js";
+
+const CONSOLIDATION_BACKUP_LIMIT = 8;
+
+type ConsolidationBackup = {
+  createdAt: string;
+  content: string;
+  contentHash: string;
+};
+
+export type MemoryConsolidationResult = {
+  content: string;
+  added: number;
+  merged: number;
+  superseded: number;
+  highlights: string[];
+};
+
+export async function storeMemoryPreimage(params: {
+  workspaceDir: string;
+  content: string;
+  nowMs: number;
+}): Promise<void> {
+  const current = await readMemoryCoreWorkspaceEntries<ConsolidationBackup>({
+    namespace: DREAMING_MEMORY_BACKUP_NAMESPACE,
+    workspaceDir: params.workspaceDir,
+  });
+  const createdAt = new Date(params.nowMs).toISOString();
+  const contentHash = createHash("sha256").update(params.content).digest("hex");
+  const entries = [
+    ...current,
+    {
+      key: `${createdAt}:${contentHash.slice(0, 12)}`,
+      value: { createdAt, content: params.content, contentHash },
+    },
+  ]
+    .toSorted((left, right) => left.value.createdAt.localeCompare(right.value.createdAt))
+    .slice(-CONSOLIDATION_BACKUP_LIMIT);
+  await writeMemoryCoreWorkspaceEntries({
+    namespace: DREAMING_MEMORY_BACKUP_NAMESPACE,
+    workspaceDir: params.workspaceDir,
+    entries,
+  });
+}
+
+export async function appendConsolidationSummary(params: {
+  workspaceDir: string;
+  result: MemoryConsolidationResult;
+  nowMs: number;
+}): Promise<void> {
+  const timestamp = new Date(params.nowMs).toISOString();
+  const lines = [
+    `### ${timestamp}`,
+    "",
+    `- Added: ${params.result.added}`,
+    `- Merged: ${params.result.merged}`,
+    `- Superseded: ${params.result.superseded}`,
+    ...(params.result.highlights.length > 0
+      ? [
+          "- Highlights:",
+          ...params.result.highlights.map((line) => `  - \`${line.replaceAll("`", "'")}\``),
+        ]
+      : []),
+    "",
+  ];
+  await updateDreamsFile({
+    workspaceDir: params.workspaceDir,
+    updater: (existing, dreamsPath) => {
+      const heading = "## Memory Consolidation History";
+      const base = existing.includes(heading)
+        ? existing.trimEnd()
+        : `${existing.trimEnd()}${existing.trim() ? "\n\n" : ""}${heading}`;
+      return {
+        content: `${base}\n\n${lines.join("\n")}`,
+        result: dreamsPath,
+      };
+    },
+  });
+}
+
+export async function appendConsolidationSkippedSummary(params: {
+  workspaceDir: string;
+  nowMs: number;
+  reason: string;
+}): Promise<void> {
+  const timestamp = new Date(params.nowMs).toISOString();
+  await updateDreamsFile({
+    workspaceDir: params.workspaceDir,
+    updater: (existing, _dreamsPath) => {
+      const heading = "## Memory Consolidation History";
+      const base = existing.includes(heading)
+        ? existing.trimEnd()
+        : `${existing.trimEnd()}${existing.trim() ? "\n\n" : ""}${heading}`;
+      return {
+        content: `${base}\n\n### ${timestamp}\n\n- Rewrite skipped: ${params.reason}.\n- Fallback: append-only promotion.\n`,
+        result: undefined,
+      };
+    },
+  });
+}
diff --git a/extensions/memory-core/src/dreaming-consolidation-projects.test.ts b/extensions/memory-core/src/dreaming-consolidation-projects.test.ts
new file mode 100644
index 000000000000..135873fc599d
--- /dev/null
+++ b/extensions/memory-core/src/dreaming-consolidation-projects.test.ts
@@ -0,0 +1,239 @@
+// Memory Core tests cover project isolation across consolidation passes.
+import { describe, expect, it, vi } from "vitest";
+import { applyMemoryConsolidationPlan, consolidateMemory } from "./dreaming-consolidation.js";
+import type { PromotionCandidate } from "./short-term-promotion.js";
+import { createMemoryCoreTestHarness } from "./test-helpers.js";
+
+const { createTempWorkspace } = createMemoryCoreTestHarness();
+const logger = { info: vi.fn(), warn: vi.fn() };
+
+type ConsolidationPrompt = {
+  currentMemory: string;
+  candidates: Array<{ key: string; resultEntry: string; projectKey: string | null }>;
+};
+
+function projectCandidate(key: string, snippet: string, projectKey?: string): PromotionCandidate {
+  return {
+    key,
+    path: "memory/2026-07-01.md",
+    startLine: 1,
+    endLine: 1,
+    source: "memory",
+    snippet,
+    recallCount: 3,
+    signalCount: 3,
+    avgScore: 0.9,
+    maxScore: 0.9,
+    uniqueQueries: 2,
+    firstRecalledAt: "2026-07-01T10:00:00.000Z",
+    lastRecalledAt: "2026-07-01T10:00:00.000Z",
+    ageDays: 0,
+    score: 0.9,
+    recallDays: ["2026-07-01", "2026-07-02"],
+    conceptTags: ["preference"],
+    components: {
+      frequency: 1,
+      relevance: 0.9,
+      diversity: 0.5,
+      recency: 1,
+      consolidation: 0.5,
+      conceptual: 0.2,
+    },
+    ...(projectKey ? { projectKey } : {}),
+    provenance: {
+      originClass: "agent",
+      sessionKind: "interactive",
+      observedAt: Date.parse("2026-07-01T10:00:00.000Z"),
+    },
+  };
+}
+
+function createPromptResponder(
+  respond: (prompt: ConsolidationPrompt) => {
+    memory: string;
+    operations: Array<{
+      candidateKey: string;
+      action: "added" | "merged" | "superseded";
+      resultEntry: string;
+      priorEntries: string[];
+    }>;
+  },
+) {
+  const responses = new Map<string, string>();
+  return {
+    run: vi.fn(async (options: unknown) => {
+      const { message, sessionKey } = options as { message: string; sessionKey: string };
+      responses.set(
+        sessionKey,
+        JSON.stringify(respond(JSON.parse(message) as ConsolidationPrompt)),
+      );
+      return { runId: sessionKey };
+    }),
+    waitForRun: vi.fn(async () => ({ status: "ok" })),
+    getSessionMessages: vi.fn(async (options: unknown) => {
+      const { sessionKey } = options as { sessionKey: string };
+      return { messages: [{ role: "assistant", content: responses.get(sessionKey) ?? "" }] };
+    }),
+    deleteSession: vi.fn(async (_options: unknown) => undefined),
+  };
+}
+
+describe("memory consolidation project groups", () => {
+  it("consolidates global and project candidates in deterministic isolated passes", async () => {
+    const workspaceDir = await createTempWorkspace("memory-consolidation-project-groups-");
+    const existingMemory = "# Memory\n\n- Existing global fact.\n";
+    const candidates = [
+      projectCandidate("beta", "Beta deployment uses blue.", "github.com/acme/beta"),
+      projectCandidate("global", "Use metric units globally."),
+      projectCandidate("alpha", "Alpha deployment uses green.", "github.com/acme/alpha"),
+    ];
+    const subagent = createPromptResponder((prompt) => ({
+      memory: `${prompt.currentMemory.trimEnd()}\n${prompt.candidates.map((item) => item.resultEntry).join("\n")}\n`,
+      operations: prompt.candidates.map((item) => ({
+        candidateKey: item.key,
+        action: "added",
+        resultEntry: item.resultEntry,
+        priorEntries: [],
+      })),
+    }));
+
+    const plan = await consolidateMemory({
+      subagent,
+      workspaceDir,
+      existingMemory,
+      candidates,
+      maxPriorEntryLossFraction: 0.25,
+      nowMs: Date.parse("2026-07-02T10:00:00.000Z"),
+      logger,
+    });
+    expect(plan).not.toBeNull();
+    if (!plan) {
+      return;
+    }
+
+    const promptedGroups = subagent.run.mock.calls.map(([options]) => {
+      const prompt = JSON.parse((options as { message: string }).message) as ConsolidationPrompt;
+      return prompt.candidates.map((item) => item.projectKey);
+    });
+    expect(promptedGroups).toEqual([[null], ["github.com/acme/alpha"], ["github.com/acme/beta"]]);
+
+    const result = applyMemoryConsolidationPlan({
+      existingMemory,
+      plan,
+      nowMs: Date.parse("2026-07-02T10:00:00.000Z"),
+      maxPriorEntryLossFraction: 0.25,
+    });
+    expect(result?.content).toContain(
+      "Alpha deployment uses green. Source: memory/2026-07-01.md#L1-L1 <!-- trigger: preference --> <!-- importance: 9 --> <!-- project: github.com/acme/alpha -->",
+    );
+    expect(result?.content).toContain(
+      "Beta deployment uses blue. Source: memory/2026-07-01.md#L1-L1 <!-- trigger: preference --> <!-- importance: 9 --> <!-- project: github.com/acme/beta -->",
+    );
+    const globalLine = result?.content
+      .split("\n")
+      .find((line) => line.includes("Use metric units globally."));
+    expect(globalLine).toBeDefined();
+    expect(globalLine).not.toContain("<!-- project:");
+  });
+
+  it("rejects a cross-project merge after completing the isolated group passes", async () => {
+    const workspaceDir = await createTempWorkspace("memory-consolidation-project-reject-");
+    const betaPrior = "- Shared deployment uses blue. <!-- project: github.com/acme/beta -->";
+    const existingMemory = `# Memory\n\n${betaPrior}\n- Two.\n- Three.\n- Four.\n`;
+    const candidates = [
+      projectCandidate("beta", "Beta deployment uses blue.", "github.com/acme/beta"),
+      projectCandidate("global", "Use metric units globally."),
+      projectCandidate("alpha", "Shared deployment uses blue.", "github.com/acme/alpha"),
+    ];
+    const subagent = createPromptResponder((prompt) => {
+      const item = prompt.candidates[0]!;
+      const crossProject = item.projectKey === "github.com/acme/alpha";
+      return {
+        memory: crossProject
+          ? `${prompt.currentMemory.replace(`${betaPrior}\n`, "").trimEnd()}\n${item.resultEntry}\n`
+          : `${prompt.currentMemory.trimEnd()}\n${item.resultEntry}\n`,
+        operations: [
+          {
+            candidateKey: item.key,
+            action: crossProject ? "merged" : "added",
+            resultEntry: item.resultEntry,
+            priorEntries: crossProject ? [betaPrior] : [],
+          },
+        ],
+      };
+    });
+
+    await expect(
+      consolidateMemory({
+        subagent,
+        workspaceDir,
+        existingMemory,
+        candidates,
+        maxPriorEntryLossFraction: 0.25,
+        nowMs: Date.parse("2026-07-02T10:00:00.000Z"),
+        logger,
+      }),
+    ).resolves.toBeNull();
+    expect(subagent.run).toHaveBeenCalledTimes(3);
+    expect(logger.warn).toHaveBeenCalledWith(
+      expect.stringContaining("output crosses project groups for candidate alpha"),
+    );
+  });
+
+  it("rejects groups whose code-applied aggregate exceeds the memory budget", async () => {
+    const workspaceDir = await createTempWorkspace("memory-consolidation-project-budget-");
+    const existingMemory = "# Memory\n";
+    const candidates = [
+      projectCandidate("global", "Use metric units globally."),
+      projectCandidate("alpha", "Alpha deployment uses green.", "github.com/acme/alpha"),
+    ];
+    const outputLengths: number[] = [];
+    const createBudgetSubagent = () =>
+      createPromptResponder((prompt) => {
+        const memory = `${prompt.currentMemory.trimEnd()}\n${prompt.candidates.map((item) => item.resultEntry).join("\n")}\n`;
+        outputLengths.push(memory.length);
+        return {
+          memory,
+          operations: prompt.candidates.map((item) => ({
+            candidateKey: item.key,
+            action: "added",
+            resultEntry: item.resultEntry,
+            priorEntries: [],
+          })),
+        };
+      });
+
+    const fullPlan = await consolidateMemory({
+      subagent: createBudgetSubagent(),
+      workspaceDir,
+      existingMemory,
+      candidates,
+      maxPriorEntryLossFraction: 0.25,
+      nowMs: Date.parse("2026-07-02T10:00:00.000Z"),
+      logger,
+    });
+    expect(fullPlan).not.toBeNull();
+    if (!fullPlan) {
+      return;
+    }
+    const aggregateLength = fullPlan.memory.length;
+    const perGroupBudget = Math.max(...outputLengths);
+    expect(aggregateLength).toBeGreaterThan(perGroupBudget);
+
+    await expect(
+      consolidateMemory({
+        subagent: createBudgetSubagent(),
+        workspaceDir,
+        existingMemory,
+        candidates,
+        maxPriorEntryLossFraction: 0.25,
+        memoryFileMaxChars: perGroupBudget,
+        nowMs: Date.parse("2026-07-02T10:00:00.000Z"),
+        logger,
+      }),
+    ).resolves.toBeNull();
+    expect(logger.warn).toHaveBeenCalledWith(
+      "memory-core: combined consolidation plan is invalid; using append-only fallback.",
+    );
+  });
+});
diff --git a/extensions/memory-core/src/dreaming-consolidation.ts b/extensions/memory-core/src/dreaming-consolidation.ts
index 924b5a56cb91..58cc680ba79e 100644
--- a/extensions/memory-core/src/dreaming-consolidation.ts
+++ b/extensions/memory-core/src/dreaming-consolidation.ts
@@ -5,21 +5,20 @@ import {
   formatMemoryDreamingDay,
 } from "openclaw/plugin-sdk/memory-core-host-status";
 import { truncateUtf16Safe } from "openclaw/plugin-sdk/text-utility-runtime";
+import type { MemoryConsolidationResult } from "./dreaming-consolidation-artifacts.js";
 import { filterConsolidationCandidates } from "./dreaming-consolidation-candidates.js";
-import { updateDreamsFile } from "./dreaming-dreams-file.js";
 import type { SubagentSurface } from "./dreaming-narrative.js";
-import {
-  readMemoryCoreWorkspaceEntries,
-  writeMemoryCoreWorkspaceEntries,
-  DREAMING_MEMORY_BACKUP_NAMESPACE,
-} from "./dreaming-state.js";
 import { DEFAULT_MEMORY_FILE_MAX_CHARS } from "./memory-budget.js";
-import { buildPromotionRecallAnnotations } from "./short-term-promotion-metadata.js";
+import {
+  buildPromotionRecallAnnotations,
+  groupPromotionCandidatesByProjectKey,
+  memoryEntryMatchesPromotionProjectGroup,
+  type PromotionProjectGroup,
+} from "./short-term-promotion-metadata.js";
 import type { PromotionCandidate } from "./short-term-promotion-types.js";
 
 const CONSOLIDATION_TIMEOUT_MS = 60_000;
 const CONSOLIDATION_MESSAGE_LIMIT = 5;
-const CONSOLIDATION_BACKUP_LIMIT = 8;
 const PROMOTION_MARKER_PREFIX = "openclaw-memory-promotion:";
 const PROMOTED_SNIPPET_CHARS_PER_TOKEN_ESTIMATE = 4;
 const CONSOLIDATION_SYSTEM_PROMPT = [
@@ -39,12 +38,6 @@ type Logger = {
   warn: (message: string) => void;
 };
 
-type ConsolidationBackup = {
-  createdAt: string;
-  content: string;
-  contentHash: string;
-};
-
 type ConsolidationOperation = {
   candidateKey: string;
   action: "added" | "merged" | "superseded";
@@ -60,14 +53,6 @@ type ConsolidationOutput = {
 
 type MemoryConsolidationPlan = ConsolidationOutput;
 
-type MemoryConsolidationResult = {
-  content: string;
-  added: number;
-  merged: number;
-  superseded: number;
-  highlights: string[];
-};
-
 function candidateSourceRef(candidate: PromotionCandidate): string {
   return `${candidate.path}#L${candidate.startLine}-L${candidate.endLine}`;
 }
@@ -262,6 +247,7 @@ function validateConsolidatedMemory(params: {
   previous: string;
   output: ConsolidationOutput;
   candidates: PromotionCandidate[];
+  projectKey?: string;
   maxPriorEntryLossFraction: number;
   memoryFileMaxChars: number;
   maxPromotedSnippetTokens: number;
@@ -347,6 +333,13 @@ function validateConsolidatedMemory(params: {
     ) {
       return `output has invalid prior-entry evidence for candidate ${candidate.key}`;
     }
+    if (
+      operation.priorEntries.some(
+        (entry) => !memoryEntryMatchesPromotionProjectGroup(entry, params.projectKey),
+      )
+    ) {
+      return `output crosses project groups for candidate ${candidate.key}`;
+    }
     if (
       operation.action === "merged" &&
       operation.priorEntries.some(
@@ -539,33 +532,6 @@ export function applyMemoryConsolidationPlan(params: {
   };
 }
 
-export async function storeMemoryPreimage(params: {
-  workspaceDir: string;
-  content: string;
-  nowMs: number;
-}): Promise<void> {
-  const current = await readMemoryCoreWorkspaceEntries<ConsolidationBackup>({
-    namespace: DREAMING_MEMORY_BACKUP_NAMESPACE,
-    workspaceDir: params.workspaceDir,
-  });
-  const createdAt = new Date(params.nowMs).toISOString();
-  const contentHash = createHash("sha256").update(params.content).digest("hex");
-  const entries = [
-    ...current,
-    {
-      key: `${createdAt}:${contentHash.slice(0, 12)}`,
-      value: { createdAt, content: params.content, contentHash },
-    },
-  ]
-    .toSorted((left, right) => left.value.createdAt.localeCompare(right.value.createdAt))
-    .slice(-CONSOLIDATION_BACKUP_LIMIT);
-  await writeMemoryCoreWorkspaceEntries({
-    namespace: DREAMING_MEMORY_BACKUP_NAMESPACE,
-    workspaceDir: params.workspaceDir,
-    entries,
-  });
-}
-
 export async function consolidateMemory(params: {
   subagent: SubagentSurface;
   workspaceDir: string;
@@ -582,28 +548,118 @@ export async function consolidateMemory(params: {
   if (candidates.length === 0) {
     return null;
   }
-  const sessionKey = `dreaming-narrative-consolidation-${createHash("sha1")
+  const sessionPrefix = `dreaming-narrative-consolidation-${createHash("sha1")
     .update(params.workspaceDir)
     .digest("hex")
     .slice(0, 12)}-${randomUUID()}`;
-  try {
-    const maxPromotedSnippetTokens = Math.max(
-      1,
-      Math.floor(
-        params.maxPromotedSnippetTokens ?? DEFAULT_MEMORY_DEEP_DREAMING_MAX_PROMOTED_SNIPPET_TOKENS,
-      ),
+  const maxPromotedSnippetTokens = Math.max(
+    1,
+    Math.floor(
+      params.maxPromotedSnippetTokens ?? DEFAULT_MEMORY_DEEP_DREAMING_MAX_PROMOTED_SNIPPET_TOKENS,
+    ),
+  );
+  const budget = Math.max(
+    1,
+    Math.floor(params.memoryFileMaxChars ?? DEFAULT_MEMORY_FILE_MAX_CHARS),
+  );
+  const groups = groupPromotionCandidatesByProjectKey(candidates);
+  const outputs: ConsolidationOutput[] = [];
+  let rejected = false;
+
+  for (const [groupIndex, group] of groups.entries()) {
+    const sessionKey = `${sessionPrefix}-${groupIndex}`;
+    try {
+      const output = await runConsolidationGroup({
+        ...params,
+        group,
+        sessionKey,
+        maxPromotedSnippetTokens,
+      });
+      if (!output) {
+        rejected = true;
+        continue;
+      }
+      const rejection = validateConsolidatedMemory({
+        previous: params.existingMemory,
+        output,
+        candidates: group.candidates,
+        ...(group.projectKey ? { projectKey: group.projectKey } : {}),
+        maxPriorEntryLossFraction: params.maxPriorEntryLossFraction,
+        memoryFileMaxChars: budget,
+        maxPromotedSnippetTokens,
+      });
+      if (rejection) {
+        params.logger.warn(
+          `memory-core: consolidation rejected because ${rejection}; using append-only fallback.`,
+        );
+        rejected = true;
+        continue;
+      }
+      outputs.push(output);
+    } catch (error) {
+      params.logger.warn(
+        `memory-core: consolidation failed (${error instanceof Error ? error.message : String(error)}); using append-only fallback.`,
+      );
+      rejected = true;
+    } finally {
+      await params.subagent.deleteSession({ sessionKey }).catch(() => undefined);
+    }
+  }
+
+  if (rejected || outputs.length !== groups.length) {
+    return null;
+  }
+
+  const candidatesByKey = new Map(candidates.map((candidate) => [candidate.key, candidate]));
+  const operations = outputs
+    .flatMap((output) => output.operations)
+    .map((operation) => {
+      const lineageKey = candidatesByKey.get(operation.candidateKey)?.provenance?.supersedesKey;
+      if (lineageKey) {
+        operation.lineageKey = lineageKey;
+      }
+      return operation;
+    });
+  const plan = { memory: params.existingMemory, operations };
+  const aggregate = applyMemoryConsolidationPlan({
+    existingMemory: params.existingMemory,
+    plan,
+    nowMs: params.nowMs,
+    memoryFileMaxChars: budget,
+    maxPriorEntryLossFraction: params.maxPriorEntryLossFraction,
+  });
+  if (!aggregate) {
+    params.logger.warn(
+      "memory-core: combined consolidation plan is invalid; using append-only fallback.",
     );
+    return null;
+  }
+  plan.memory = aggregate.content;
+  return plan;
+}
+
+async function runConsolidationGroup(params: {
+  subagent: SubagentSurface;
+  existingMemory: string;
+  group: PromotionProjectGroup;
+  model?: string;
+  nowMs: number;
+  sessionKey: string;
+  maxPromotedSnippetTokens: number;
+  logger: Logger;
+}): Promise<ConsolidationOutput | null> {
+  try {
     const run = await params.subagent.run({
-      idempotencyKey: `${sessionKey}-${params.nowMs}`,
-      sessionKey,
+      idempotencyKey: `${params.sessionKey}-${params.nowMs}`,
+      sessionKey: params.sessionKey,
       message: buildConsolidationPrompt(
         params.existingMemory,
-        candidates,
-        maxPromotedSnippetTokens,
+        params.group.candidates,
+        params.maxPromotedSnippetTokens,
       ),
       ...(params.model ? { model: params.model } : {}),
       extraSystemPrompt: CONSOLIDATION_SYSTEM_PROMPT,
-      lane: `dreaming-consolidation:${sessionKey}`,
+      lane: `dreaming-consolidation:${params.sessionKey}`,
       lightContext: true,
       deliver: false,
     });
@@ -618,7 +674,7 @@ export async function consolidateMemory(params: {
       return null;
     }
     const { messages } = await params.subagent.getSessionMessages({
-      sessionKey,
+      sessionKey: params.sessionKey,
       limit: CONSOLIDATION_MESSAGE_LIMIT,
     });
     const assistantText = extractAssistantText(messages);
@@ -629,97 +685,11 @@ export async function consolidateMemory(params: {
       );
       return null;
     }
-    const budget = Math.max(
-      1,
-      Math.floor(params.memoryFileMaxChars ?? DEFAULT_MEMORY_FILE_MAX_CHARS),
-    );
-    const rejection = validateConsolidatedMemory({
-      previous: params.existingMemory,
-      output,
-      candidates,
-      maxPriorEntryLossFraction: params.maxPriorEntryLossFraction,
-      memoryFileMaxChars: budget,
-      maxPromotedSnippetTokens,
-    });
-    if (rejection) {
-      params.logger.warn(
-        `memory-core: consolidation rejected because ${rejection}; using append-only fallback.`,
-      );
-      return null;
-    }
-    const candidatesByKey = new Map(candidates.map((candidate) => [candidate.key, candidate]));
-    return {
-      ...output,
-      operations: output.operations.map((operation) => {
-        const lineageKey = candidatesByKey.get(operation.candidateKey)?.provenance?.supersedesKey;
-        if (lineageKey) {
-          operation.lineageKey = lineageKey;
-        }
-        return operation;
-      }),
-    };
+    return output;
   } catch (error) {
     params.logger.warn(
       `memory-core: consolidation failed (${error instanceof Error ? error.message : String(error)}); using append-only fallback.`,
     );
     return null;
-  } finally {
-    await params.subagent.deleteSession({ sessionKey }).catch(() => undefined);
   }
 }
-
-export async function appendConsolidationSummary(params: {
-  workspaceDir: string;
-  result: MemoryConsolidationResult;
-  nowMs: number;
-}): Promise<void> {
-  const timestamp = new Date(params.nowMs).toISOString();
-  const lines = [
-    `### ${timestamp}`,
-    "",
-    `- Added: ${params.result.added}`,
-    `- Merged: ${params.result.merged}`,
-    `- Superseded: ${params.result.superseded}`,
-    ...(params.result.highlights.length > 0
-      ? [
-          "- Highlights:",
-          ...params.result.highlights.map((line) => `  - \`${line.replaceAll("`", "'")}\``),
-        ]
-      : []),
-    "",
-  ];
-  await updateDreamsFile({
-    workspaceDir: params.workspaceDir,
-    updater: (existing, dreamsPath) => {
-      const heading = "## Memory Consolidation History";
-      const base = existing.includes(heading)
-        ? existing.trimEnd()
-        : `${existing.trimEnd()}${existing.trim() ? "\n\n" : ""}${heading}`;
-      return {
-        content: `${base}\n\n${lines.join("\n")}`,
-        result: dreamsPath,
-      };
-    },
-  });
-}
-
-export async function appendConsolidationSkippedSummary(params: {
-  workspaceDir: string;
-  nowMs: number;
-  reason: string;
-}): Promise<void> {
-  const timestamp = new Date(params.nowMs).toISOString();
-  await updateDreamsFile({
-    workspaceDir: params.workspaceDir,
-    updater: (existing, _dreamsPath) => {
-      const heading = "## Memory Consolidation History";
-      const base = existing.includes(heading)
-        ? existing.trimEnd()
-        : `${existing.trimEnd()}${existing.trim() ? "\n\n" : ""}${heading}`;
-      return {
-        content: `${base}\n\n### ${timestamp}\n\n- Rewrite skipped: ${params.reason}.\n- Fallback: append-only promotion.\n`,
-        result: undefined,
-      };
-    },
-  });
-}
diff --git a/extensions/memory-core/src/short-term-promotion-apply.ts b/extensions/memory-core/src/short-term-promotion-apply.ts
index 1a75ccb735e2..826d63a9d7a3 100644
--- a/extensions/memory-core/src/short-term-promotion-apply.ts
+++ b/extensions/memory-core/src/short-term-promotion-apply.ts
@@ -9,17 +9,16 @@ import {
 } from "openclaw/plugin-sdk/memory-core-host-status";
 import { appendMemoryHostEvent } from "openclaw/plugin-sdk/memory-host-events";
 import { truncateUtf16Safe } from "openclaw/plugin-sdk/text-utility-runtime";
+import {
+  appendConsolidationSkippedSummary,
+  appendConsolidationSummary,
+  storeMemoryPreimage,
+} from "./dreaming-consolidation-artifacts.js";
 import {
   isConsolidationCandidateEligible,
   isPromotionOriginBlocked,
 } from "./dreaming-consolidation-candidates.js";
-import {
-  applyMemoryConsolidationPlan,
-  appendConsolidationSkippedSummary,
-  appendConsolidationSummary,
-  consolidateMemory,
-  storeMemoryPreimage,
-} from "./dreaming-consolidation.js";
+import { applyMemoryConsolidationPlan, consolidateMemory } from "./dreaming-consolidation.js";
 import {
   DREAMING_DAILY_PROVENANCE_NAMESPACE,
   readMemoryCoreWorkspaceEntries,
@@ -33,7 +32,10 @@ import {
   resolveMemoryWritePath,
   writeMemoryContent,
 } from "./short-term-promotion-memory-write.js";
-import { buildPromotionRecallAnnotations } from "./short-term-promotion-metadata.js";
+import {
+  buildPromotionRecallAnnotations,
+  groupPromotionCandidatesByProjectKey,
+} from "./short-term-promotion-metadata.js";
 import { resolveShortTermSourcePathCandidates } from "./short-term-promotion-record.js";
 import { rehydratePromotionCandidate } from "./short-term-promotion-rehydrate.js";
 import { readStore, withShortTermLock, writeStore } from "./short-term-promotion-store.js";
@@ -70,15 +72,10 @@ function buildPromotionSection(
 ): string {
   const sectionDate = formatMemoryDreamingDay(nowMs, timezone);
   const lines = ["", `## Promoted From Short-Term Memory (${sectionDate})`, ""];
-  const projectGroups = new Map<string, PromotionCandidate[]>();
-  for (const candidate of candidates) {
-    const group =
-      candidate.projectKey && !/[\r\n<>]/u.test(candidate.projectKey) ? candidate.projectKey : "";
-    projectGroups.set(group, [...(projectGroups.get(group) ?? []), candidate]);
-  }
+  const projectGroups = groupPromotionCandidatesByProjectKey(candidates);
 
-  for (const [projectKey, groupCandidates] of projectGroups) {
-    if (projectGroups.size > 1) {
+  for (const { projectKey, candidates: groupCandidates } of projectGroups) {
+    if (projectGroups.length > 1) {
       lines.push(projectKey ? `### Project: ${projectKey}` : "### Global", "");
     }
     for (const candidate of groupCandidates) {
@@ -92,7 +89,7 @@ function buildPromotionSection(
         `- ${formatPromotedSnippetForMemory(candidate.snippet, maxPromotedSnippetTokens)} ${metadata} ${buildPromotionRecallAnnotations(candidate)}`,
       );
     }
-    if (projectGroups.size > 1) {
+    if (projectGroups.length > 1) {
       lines.push("");
     }
   }
diff --git a/extensions/memory-core/src/short-term-promotion-metadata.test.ts b/extensions/memory-core/src/short-term-promotion-metadata.test.ts
index 650ab427fca2..2a2b9dbee64e 100644
--- a/extensions/memory-core/src/short-term-promotion-metadata.test.ts
+++ b/extensions/memory-core/src/short-term-promotion-metadata.test.ts
@@ -1,8 +1,35 @@
 // Memory Core tests cover deterministic recall metadata for promoted entries.
 import { describe, expect, it } from "vitest";
-import { buildPromotionRecallAnnotations } from "./short-term-promotion-metadata.js";
+import {
+  buildPromotionRecallAnnotations,
+  groupPromotionCandidatesByProjectKey,
+} from "./short-term-promotion-metadata.js";
 
 describe("promotion recall metadata", () => {
+  it("orders exact project-key groups deterministically", () => {
+    const groups = groupPromotionCandidatesByProjectKey([
+      { key: "beta", projectKey: "github.com/acme/beta" },
+      { key: "global" },
+      { key: "multi", projectKey: "github.com/acme/alpha; path:/srv/alpha" },
+      { key: "alpha", projectKey: "github.com/acme/alpha" },
+    ]);
+
+    expect(
+      groups.map((group) => ({
+        projectKey: group.projectKey ?? null,
+        candidates: group.candidates.map((candidate) => candidate.key),
+      })),
+    ).toEqual([
+      { projectKey: null, candidates: ["global"] },
+      { projectKey: "github.com/acme/alpha", candidates: ["alpha"] },
+      {
+        projectKey: "github.com/acme/alpha; path:/srv/alpha",
+        candidates: ["multi"],
+      },
+      { projectKey: "github.com/acme/beta", candidates: ["beta"] },
+    ]);
+  });
+
   it("keeps the top three concept tags and rounds importance into the supported range", () => {
     expect(
       buildPromotionRecallAnnotations({
diff --git a/extensions/memory-core/src/short-term-promotion-metadata.ts b/extensions/memory-core/src/short-term-promotion-metadata.ts
index 265925e5df21..257218c67cb5 100644
--- a/extensions/memory-core/src/short-term-promotion-metadata.ts
+++ b/extensions/memory-core/src/short-term-promotion-metadata.ts
@@ -1,8 +1,16 @@
 // Memory Core plugin module formats deterministic recall metadata for promoted entries.
+import { extractProjectKeysFromCuratedEntry } from "openclaw/plugin-sdk/memory-core-host-engine-storage";
 import type { PromotionCandidate } from "./short-term-promotion-types.js";
 
 const MAX_PROMOTION_TRIGGER_PHRASE_CHARS = 64;
 
+export type PromotionProjectGroup<
+  Candidate extends Pick<PromotionCandidate, "projectKey"> = PromotionCandidate,
+> = {
+  projectKey?: string;
+  candidates: Candidate[];
+};
+
 function normalizePromotionTriggerPhrase(value: string): string {
   const singleLine = value
     .replace(/<!--|-->/gu, " ")
@@ -12,6 +20,40 @@ function normalizePromotionTriggerPhrase(value: string): string {
   return Array.from(singleLine).slice(0, MAX_PROMOTION_TRIGGER_PHRASE_CHARS).join("").trimEnd();
 }
 
+function resolvePromotionProjectKey(
+  candidate: Pick<PromotionCandidate, "projectKey">,
+): string | undefined {
+  return candidate.projectKey && !/[\r\n<>]/u.test(candidate.projectKey)
+    ? candidate.projectKey
+    : undefined;
+}
+
+export function groupPromotionCandidatesByProjectKey<
+  Candidate extends Pick<PromotionCandidate, "projectKey">,
+>(candidates: readonly Candidate[]): PromotionProjectGroup<Candidate>[] {
+  const groups = new Map<string, Candidate[]>();
+  for (const candidate of candidates) {
+    const projectKey = resolvePromotionProjectKey(candidate) ?? "";
+    groups.set(projectKey, [...(groups.get(projectKey) ?? []), candidate]);
+  }
+  // Stable group order keeps both prompts and append fallback bytes cache-friendly.
+  return [...groups.entries()]
+    .toSorted(([left], [right]) => (left < right ? -1 : left > right ? 1 : 0))
+    .map(([projectKey, groupedCandidates]) =>
+      projectKey
+        ? { projectKey, candidates: groupedCandidates }
+        : { candidates: groupedCandidates },
+    );
+}
+
+export function memoryEntryMatchesPromotionProjectGroup(
+  entry: string,
+  projectKey: string | undefined,
+): boolean {
+  const annotations = extractProjectKeysFromCuratedEntry(entry);
+  return annotations.valid && annotations.keys.join("; ") === (projectKey ?? "");
+}
+
 export function buildPromotionRecallAnnotations(
   candidate: Pick<PromotionCandidate, "conceptTags" | "score" | "projectKey">,
 ): string {
@@ -21,9 +63,7 @@ export function buildPromotionRecallAnnotations(
     .filter(Boolean)
     .join(", ");
   const importance = Math.min(10, Math.max(3, Math.round(candidate.score * 10)));
-  const project =
-    candidate.projectKey && !/[\r\n<>]/u.test(candidate.projectKey)
-      ? ` <!-- project: ${candidate.projectKey} -->`
-      : "";
+  const projectKey = resolvePromotionProjectKey(candidate);
+  const project = projectKey ? ` <!-- project: ${projectKey} -->` : "";
   return `<!-- trigger: ${triggers} --> <!-- importance: ${importance} -->${project}`;
 }