Fix OPENCODE_DB to be a file path inside /opencode-db mount

The env var was set to /opencode-db (the mount point directory), but sqlite
requires a file path. Changed to /opencode-db/opencode.db.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

src/server/job-manifest.test.ts

@@ -287,16 +287,16 @@ describe("buildJobManifest", () => {
 });
 
 describe("agentDbClaimName — OPENCODE_DB env var", () => {
-  it("sets OPENCODE_DB to /opencode-db when agentDbClaimName is a string (dedicated PVC)", () => {
+  it("sets OPENCODE_DB to /opencode-db/opencode.db when agentDbClaimName is a string (dedicated PVC)", () => {
     const result = buildJobManifest({ ctx: mockCtx, selfPod: mockSelfPod, agentDbClaimName: "opencode-db-agent-abc" });
     const env = result.job.spec?.template?.spec?.containers?.[0].env ?? [];
-    expect(env.find((e) => e.name === "OPENCODE_DB")?.value).toBe("/opencode-db");
+    expect(env.find((e) => e.name === "OPENCODE_DB")?.value).toBe("/opencode-db/opencode.db");
   });
 
-  it("sets OPENCODE_DB to /opencode-db when agentDbClaimName is null (ephemeral)", () => {
+  it("sets OPENCODE_DB to /opencode-db/opencode.db when agentDbClaimName is null (ephemeral)", () => {
     const result = buildJobManifest({ ctx: mockCtx, selfPod: mockSelfPod, agentDbClaimName: null });
     const env = result.job.spec?.template?.spec?.containers?.[0].env ?? [];
-    expect(env.find((e) => e.name === "OPENCODE_DB")?.value).toBe("/opencode-db");
+    expect(env.find((e) => e.name === "OPENCODE_DB")?.value).toBe("/opencode-db/opencode.db");
   });
 
   it("does not set OPENCODE_DB when agentDbClaimName is undefined", () => {
@@ -305,13 +305,13 @@ describe("agentDbClaimName — OPENCODE_DB env var", () => {
     expect(env.find((e) => e.name === "OPENCODE_DB")).toBeUndefined();
   });
 
-  it("replaces a user-provided OPENCODE_DB env override with /opencode-db", () => {
+  it("replaces a user-provided OPENCODE_DB env override with /opencode-db/opencode.db", () => {
     const selfPod = { ...mockSelfPod, inheritedEnv: { OPENCODE_DB: "/user/override" } };
     const result = buildJobManifest({ ctx: mockCtx, selfPod, agentDbClaimName: "opencode-db-agent-abc" });
     const env = result.job.spec?.template?.spec?.containers?.[0].env ?? [];
     const dbEntries = env.filter((e) => e.name === "OPENCODE_DB");
     expect(dbEntries).toHaveLength(1);
-    expect(dbEntries[0].value).toBe("/opencode-db");
+    expect(dbEntries[0].value).toBe("/opencode-db/opencode.db");
   });
 });
 

src/server/job-manifest.ts

@@ -312,9 +312,9 @@ export function buildJobManifest(input: JobBuildInput): JobBuildResult {
   if (input.agentDbClaimName !== undefined) {
     const dbEnvIdx = envVars.findIndex((e) => e.name === "OPENCODE_DB");
     if (dbEnvIdx >= 0) {
-      envVars[dbEnvIdx] = { name: "OPENCODE_DB", value: "/opencode-db" };
+      envVars[dbEnvIdx] = { name: "OPENCODE_DB", value: "/opencode-db/opencode.db" };
     } else {
-      envVars.push({ name: "OPENCODE_DB", value: "/opencode-db" });
+      envVars.push({ name: "OPENCODE_DB", value: "/opencode-db/opencode.db" });
     }
   }