diff --git a/src/infra/state-migrations.media-persistence.historical-schema.test-support.ts b/src/infra/state-migrations.media-persistence.historical-schema.test-support.ts
index fead7aa3c4ad..f4595ed60180 100644
--- a/src/infra/state-migrations.media-persistence.historical-schema.test-support.ts
+++ b/src/infra/state-migrations.media-persistence.historical-schema.test-support.ts
@@ -42,6 +42,7 @@ function removeSchemaRange(sql: string, startMarker: string, endMarker: string):
 export function historicalV15AgentSchemaSql(): string {
   let sql = restoreHistoricalAgentLeaseSchema(OPENCLAW_AGENT_SCHEMA_SQL)
     .replace("  entry_valid INTEGER NOT NULL DEFAULT 0 CHECK (entry_valid IN (-1, 0, 1)),\n", "")
+    .replace("  project_id TEXT,\n", "")
     .replace(
       "  owner_actor_type TEXT,\n  owner_actor_id TEXT,\n  owner_assigned_by_type TEXT,\n  owner_assigned_by_id TEXT,\n  owner_assigned_at INTEGER,\n",
       "",
diff --git a/src/infra/state-migrations.media-persistence.historical-v14.test.ts b/src/infra/state-migrations.media-persistence.historical-v14.test.ts
index 179507e53974..9c1aae110725 100644
--- a/src/infra/state-migrations.media-persistence.historical-v14.test.ts
+++ b/src/infra/state-migrations.media-persistence.historical-v14.test.ts
@@ -26,8 +26,9 @@ describe("legacy media persistence Doctor migration from historical v14", () =>
   it("migrates a copy of the exact v2026.7.2-beta.4 schema without losing its session", () => {
     const historicalSchema = historicalV14AgentSchemaSql();
     expect(createHash("sha256").update(historicalSchema).digest("hex")).toBe(
-      "dfb2a98c9418eb1032e82e4310c7bde41700e4a0af05a2464673e9c4ece11fd1",
+      "955889668707fbccab70b80b5058af5a1587fd35ae32a80f8605179a68fb5117",
     );
+    expect(historicalSchema).not.toContain("  project_id TEXT,\n");
 
     const stateDir = makeTempDir(tempDirs, "media-persistence-historical-v14-");
     const env = { OPENCLAW_STATE_DIR: stateDir };
diff --git a/src/infra/state-migrations.media-persistence.historical-v15.test.ts b/src/infra/state-migrations.media-persistence.historical-v15.test.ts
index 8bc4cdcd7331..bad90b2b548e 100644
--- a/src/infra/state-migrations.media-persistence.historical-v15.test.ts
+++ b/src/infra/state-migrations.media-persistence.historical-v15.test.ts
@@ -26,7 +26,7 @@ describe("legacy media persistence Doctor migration from historical v15", () =>
   it("converges the exact 509a5f0373764 schema before current-index repair", () => {
     const historicalSchema = historicalV15AgentSchemaSql();
     expect(createHash("sha256").update(historicalSchema).digest("hex")).toBe(
-      "2ad94b064159086923e24acf4e11cb77546fca71646e7f49c7a6d40d2a22890a",
+      "75953ef97a738251822fc5aaf283bbe55fbcabe8702ad771892cdafc85d8e6b9",
     );
 
     const stateDir = makeTempDir(tempDirs, "media-persistence-historical-v15-");
diff --git a/src/state/openclaw-agent-db-schema-helpers.ts b/src/state/openclaw-agent-db-schema-helpers.ts
index 35f2d4d7684b..8f3bc49dfe6a 100644
--- a/src/state/openclaw-agent-db-schema-helpers.ts
+++ b/src/state/openclaw-agent-db-schema-helpers.ts
@@ -26,7 +26,10 @@ import { CONTEXT_ENGINE_TURN_OUTBOX_TABLE } from "./openclaw-agent-context-engin
 import { FIRST_USE_ADDITIVE_AGENT_COLUMN_DEFINITIONS } from "./openclaw-agent-db-additive-columns.js";
 import { OPENCLAW_AGENT_SCHEMA_VERSION } from "./openclaw-agent-db-contract.js";
 import { OpenClawAgentDatabaseMediaMigrationRequiredError } from "./openclaw-agent-db-migration-required.js";
-import { ensureSessionEntryValidityProjection } from "./openclaw-agent-db-session-migrations.js";
+import {
+  ensureSessionEntryValidityProjection,
+  ensureSessionProjectColumn,
+} from "./openclaw-agent-db-session-migrations.js";
 import { MESSAGE_TOOL_RUN_OUTCOMES_TABLE } from "./openclaw-agent-message-tool-outcome-schema.js";
 import {
   ensureOpenClawAgentProgressCardSchemaInTransaction,
@@ -186,6 +189,7 @@ export function repairAndAssertOpenClawAgentV14SchemaForMigration(
     );
   }
 
+  ensureSessionProjectColumn(database);
   ensureSessionEntryValidityProjection(database);
   ensureSessionKeyContractSchemaInTransaction(database);