diff --git a/doc/COST-ACCOUNTING.md b/doc/COST-ACCOUNTING.md
index c63d6281a11..f8b287d3715 100644
--- a/doc/COST-ACCOUNTING.md
+++ b/doc/COST-ACCOUNTING.md
@@ -174,3 +174,10 @@ edits deliver hard-stop cancellation after their transaction commits.
 Status-card update costs retain the ledger's fractional-cent storage precision.
 The mutation gate retains partial results and per-run reports/logs under
 `coverage/accounting/` when its baseline fails or a mutation survives.
+
+Failed native turns persist observed run-delta usage before semantic-result
+finalization. A matching terminal failure, cancellation, or interruption closes
+that receipt; missing terminal evidence and session-only totals remain pending.
+For multiple provider attempts, known prices remain in the exact spend total
+when another attempt is unpriced. The aggregate stays marked unpriced, so the
+configured unknown-price policy still controls whether new work may start.
diff --git a/doc/connections/AI-CONNECTIONS.md b/doc/connections/AI-CONNECTIONS.md
index d31ce5fea97..c0ca25fa2c6 100644
--- a/doc/connections/AI-CONNECTIONS.md
+++ b/doc/connections/AI-CONNECTIONS.md
@@ -186,6 +186,17 @@ and contain neither credentials nor raw provider errors. Expired credentials
 report `authentication_required`; the probe does not exchange refresh tokens
 or change connection health.
 
+The Costs dashboard uses the company quota endpoint. It reads each authorized
+managed subscription separately, retaining the last successful observation on
+transient errors. For managed Codex accounts, a 401 can trigger one persisted
+OAuth refresh; it defers while potentially competing OpenAI work is active.
+Refresh takes the company secret-mutation lock before database row locks and
+requires those row locks immediately, before exchanging a single-use token.
+Reconnect and runtime credential write-back follow the same lock order.
+Credential resolution checks its version after any database wait and reloads a
+rotated value before giving it to a new run. Unknown utilization has no progress
+bar, but any provider-reported reset time remains visible.
+
 Verification:
 
 ```sh
diff --git a/packages/adapter-utils/src/usage-checkpoint.test.ts b/packages/adapter-utils/src/usage-checkpoint.test.ts
index 2b622ef60f0..a158f587c15 100644
--- a/packages/adapter-utils/src/usage-checkpoint.test.ts
+++ b/packages/adapter-utils/src/usage-checkpoint.test.ts
@@ -29,6 +29,29 @@ describe("usage checkpoint stream", () => {
     expect(parser.mock.calls[0][0]).not.toContain("private content");
   });
 
+  it("bounds large content strings before buffering and preserves usage on either side", async () => {
+    const saved = vi.fn(); const parser = vi.fn(createParser()); const output = vi.fn();
+    const log = createUsageCheckpointLog(output, saved, parser);
+    const line = JSON.stringify({ type: "result", usage: { inputTokens: 2, costUsd: 0.25 }, messages: [{ content: '"\\\n'.repeat(2 * 1024 * 1024) }], model: "after-large-content" });
+    for (let offset = 0; offset < line.length; offset += 4093) await log("stdout", line.slice(offset, offset + 4093));
+    await log.flush();
+    expect(saved).toHaveBeenLastCalledWith(expect.objectContaining({ costUsd: 0.25, complete: true }));
+    expect(parser.mock.calls[0][0]).toContain("after-large-content");
+    expect(parser.mock.calls[0][0].length).toBeLessThan(1000);
+    expect(output.mock.calls.map(call => call[1]).join("")).toBe(line);
+  });
+
+  it("preserves Unicode and escaped quotes across the string limit and chunk boundaries", async () => {
+    for (const suffix of ['\\u1234', '\\"', '\\\\']) {
+      const saved = vi.fn(); const parser = vi.fn(createParser());
+      const log = createUsageCheckpointLog(vi.fn(), saved, parser);
+      const line = '{"type":"result","text":"' + 'a'.repeat(249) + suffix + 'discarded","usage":{"costUsd":0.25}}\n';
+      for (const character of line) await log("stdout", character);
+      await log.flush();
+      expect(saved).toHaveBeenCalledWith(expect.objectContaining({ costUsd: 0.25 }));
+    }
+  });
+
   it("surfaces a persistence failure outside the local process's best-effort log path", async () => {
     const failure = new Error("Receipt storage unavailable");
     const output = vi.fn(); const saved = vi.fn().mockRejectedValue(failure);
diff --git a/packages/adapter-utils/src/usage-checkpoint.ts b/packages/adapter-utils/src/usage-checkpoint.ts
index 1e0c44bd86e..123ae66615e 100644
--- a/packages/adapter-utils/src/usage-checkpoint.ts
+++ b/packages/adapter-utils/src/usage-checkpoint.ts
@@ -24,6 +24,41 @@ function project(value: unknown, depth = 0, field = ""): unknown {
       : project(entry, depth + 1, key)]));
 }
 
+/** Bound strings before buffering whole JSON lines. Provider records can carry
+ * many MiB of conversation text alongside a small usage object. Preserve JSON
+ * escapes across chunks so discarded text cannot corrupt the accounting fields. */
+function createStringCompactor() {
+  let inString = false, length = 0, escapeRemaining = 0;
+  let escapeCode = false, keepEscape = false;
+  return (chunk: string) => {
+    let output = "";
+    for (const character of chunk) {
+      if (character === "\n") {
+        inString = false; escapeRemaining = 0; escapeCode = false;
+        output += character;
+      } else if (!inString) {
+        output += character;
+        if (character === '"') { inString = true; length = 0; }
+      } else if (escapeRemaining > 0) {
+        if (keepEscape) output += character;
+        escapeRemaining = escapeCode && character === "u" ? 4 : escapeRemaining - 1;
+        escapeCode = false;
+        length++;
+      } else if (character === '"') {
+        output += character; inString = false;
+      } else if (character === "\\") {
+        keepEscape = length < 250;
+        if (keepEscape) output += character;
+        escapeRemaining = 1; escapeCode = true; length++;
+      } else {
+        if (length < 250) output += character;
+        length++;
+      }
+    }
+    return output;
+  };
+}
+
 /** The consumer incrementally parses only new records (never the full history).
  * A fresh instance belongs to one CLI attempt. Call flush() after its process
  * exits, before retrying or final result handling. Checkpoint failures are
@@ -34,6 +69,7 @@ export function createUsageCheckpointLog(
   consume: (records: string) => AdapterUsageCheckpoint | null,
 ) {
   const attemptId = randomUUID();
+  const compactStrings = createStringCompactor();
   let remainder = "", accounting = "", previous = "";
   let snapshot: AdapterUsageCheckpoint | null = null;
   let failure: unknown;
@@ -63,7 +99,7 @@ export function createUsageCheckpointLog(
   const log = async (stream: "stdout" | "stderr", chunk: string) => {
     if (onUsage && !failed && stream === "stdout") {
       try {
-        remainder += chunk;
+        remainder += compactStrings(chunk);
         const lines = remainder.split("\n"); remainder = lines.pop() ?? "";
         if (remainder.length > 8 * 1024 * 1024) throw new Error("Accounting protocol line exceeds 8 MiB");
         for (const line of lines) retain(line);
diff --git a/packages/adapters/codex-local/src/server/codex-auth-cache.test.ts b/packages/adapters/codex-local/src/server/codex-auth-cache.test.ts
index 0ca1bee28ca..2cd6ba7c173 100644
--- a/packages/adapters/codex-local/src/server/codex-auth-cache.test.ts
+++ b/packages/adapters/codex-local/src/server/codex-auth-cache.test.ts
@@ -463,13 +463,15 @@ describe("codex auth cache store", () => {
         releaseFirstCaller = resolve;
       });
 
+      const entered = deferredSignal();
       const firstCall = withAccountHomeSecretMutationLock(env, "company-shared", async () => {
         events.push("first-enter");
+        entered.resolve();
         await firstCallerGate;
         events.push("first-exit");
         return "first";
       });
-      await new Promise((resolve) => setTimeout(resolve, 20));
+      await entered.promise;
       const secondCall = withAccountHomeSecretMutationLock(env, "company-shared", async () => {
         events.push("second-enter");
         events.push("second-exit");
@@ -497,12 +499,14 @@ describe("codex auth cache store", () => {
         releaseCompanyA = resolve;
       });
 
+      const entered = deferredSignal();
       const companyACall = withAccountHomeSecretMutationLock(env, "company-a", async () => {
         events.push("a-enter");
+        entered.resolve();
         await companyAGate;
         events.push("a-exit");
       });
-      await new Promise((resolve) => setTimeout(resolve, 20));
+      await entered.promise;
       const companyBCall = withAccountHomeSecretMutationLock(env, "company-b", async () => {
         events.push("b-enter");
         events.push("b-exit");
@@ -536,6 +540,28 @@ describe("codex auth cache store", () => {
 
       expect(events).toEqual(["promotion-enter", "mutation-enter", "mutation-exit", "promotion-exit"]);
     });
+    it("allows awaited nested writes but expires inherited ownership after release", async () => {
+      const env = envFor(await makeInstanceRoot());
+      const detachedGate = deferredSignal();
+      let detached!: Promise<void>;
+      let enteredDetached = false;
+      await withAccountHomeSecretMutationLock(env, "nested", async () => {
+        await expect(withAccountHomeSecretMutationLock(env, "nested", async () => "nested write")).resolves.toBe("nested write");
+        detached = detachedGate.promise.then(() => withAccountHomeSecretMutationLock(env, "nested", async () => { enteredDetached = true; }));
+      });
+      const holding = deferredSignal();
+      const release = deferredSignal();
+      const other = withAccountHomeSecretMutationLock(env, "nested", async () => { holding.resolve(); await release.promise; });
+      await holding.promise;
+      detachedGate.resolve();
+      try {
+        await new Promise(resolve => setTimeout(resolve, 30));
+        expect(enteredDetached).toBe(false);
+      } finally { release.resolve(); }
+      await Promise.all([other, detached]);
+      expect(enteredDetached).toBe(true);
+    });
+
   });
 
   describe("Phase 8: account-home directory validity before a secret write commits", () => {
@@ -581,3 +607,9 @@ describe("codex auth cache store", () => {
     });
   });
 });
+
+function deferredSignal() {
+  let resolve!: () => void;
+  const promise = new Promise<void>(done => { resolve = done; });
+  return { promise, resolve };
+}
diff --git a/packages/adapters/codex-local/src/server/codex-auth-cache.ts b/packages/adapters/codex-local/src/server/codex-auth-cache.ts
index c51921fff6b..d6dd757313a 100644
--- a/packages/adapters/codex-local/src/server/codex-auth-cache.ts
+++ b/packages/adapters/codex-local/src/server/codex-auth-cache.ts
@@ -1,4 +1,5 @@
-import { lstat, mkdir, open, readFile, rename, rm } from "node:fs/promises";
+import { AsyncLocalStorage } from "node:async_hooks";
+import { lstat, mkdir, open, readFile, realpath, rename, rm } from "node:fs/promises";
 import path from "node:path";
 import { randomUUID } from "node:crypto";
 import { resolvePaperclipInstanceRootForAdapter } from "@paperclipai/adapter-utils/server-utils";
@@ -334,6 +335,11 @@ export async function withCodexAccountHomePromotionLock<T>(
  * create) can still call into a secrets-service write that takes this lock
  * without deadlocking on itself.
  */
+// An outer credential transaction acquires this lock before database row locks.
+// Nested secret-service writes must share that ownership, not acquire it again.
+// Expire ownership on return so detached work cannot inherit a released lock.
+const secretMutationOwnership = new AsyncLocalStorage<Map<string, { active: boolean }>>();
+
 export async function withAccountHomeSecretMutationLock<T>(
   env: NodeJS.ProcessEnv = process.env,
   companyId: string,
@@ -341,7 +347,16 @@ export async function withAccountHomeSecretMutationLock<T>(
 ): Promise<T> {
   const lockDir = resolveCodexAuthCacheNamedLockDir(env, companyId, "codex-account-home-secret-mutation-lock");
   await ensurePrivateDir(lockDir);
-  return withDirectoryMergeLock(lockDir, fn, env);
+  const key = await realpath(lockDir);
+  const inherited = secretMutationOwnership.getStore();
+  if (inherited?.get(key)?.active) return fn();
+  return withDirectoryMergeLock(lockDir, async () => {
+    const ownership = { active: true };
+    const scope = new Map(inherited);
+    scope.set(key, ownership);
+    try { return await secretMutationOwnership.run(scope, fn); }
+    finally { ownership.active = false; }
+  }, env);
 }
 
 /**
diff --git a/packages/adapters/opencode-local/src/server/execute.ts b/packages/adapters/opencode-local/src/server/execute.ts
index 72dd350f6b4..2fbbf9ea6f2 100644
--- a/packages/adapters/opencode-local/src/server/execute.ts
+++ b/packages/adapters/opencode-local/src/server/execute.ts
@@ -84,7 +84,7 @@ function parseModelProvider(model: string | null): string | null {
 }
 
 function resolveOpenCodeBiller(env: Record<string, string>, provider: string | null): string {
-  return inferOpenAiCompatibleBiller(env, null) ?? provider ?? "unknown";
+  return provider === "openai" ? inferOpenAiCompatibleBiller(env, "openai") ?? "unknown" : provider ?? "unknown";
 }
 
 const REMOTE_OPENCODE_MODELS_PROBE_DEFAULT_TIMEOUT_SEC = 20;
@@ -647,7 +647,9 @@ export async function execute(ctx: AdapterExecutionContext): Promise<AdapterExec
       }
 
       const consumeAccounting = createOpenCodeJsonlParser();
-      const accountingLog = createUsageCheckpointLog(onLog, ctx.onUsage, stdout => {
+      let hasAccounting = false;
+      const accountingLog = createUsageCheckpointLog(onLog, ctx.onUsage ?? (async () => {}), stdout => {
+        hasAccounting = true;
         const parsed = consumeAccounting(stdout);
         const provider = parseModelProvider(model || null);
         return { usage: parsed.usage, costUsd: parsed.costUsd, usageBasis: "per_run", provider, biller: resolveOpenCodeBiller(runtimeEnv, provider), billingType: "unknown", model, complete: false };
@@ -666,11 +668,15 @@ export async function execute(ctx: AdapterExecutionContext): Promise<AdapterExec
         settleRunDisposition: paperclipBridge?.settleRunDisposition,
       });
       await accountingLog.flush({ complete: proc.exitCode === 0 && !proc.timedOut && !proc.signal });
-      return {
-        proc,
-        rawStderr: proc.stderr,
-        parsed: parseOpenCodeJsonl(proc.stdout),
-      };
+      // Display output is capped by the process transport. Keep accounting
+      // from the full stream, including when no checkpoint callback is installed.
+      const parsed = parseOpenCodeJsonl(proc.stdout);
+      if (hasAccounting) {
+        const retained = consumeAccounting("");
+        parsed.usage = retained.usage;
+        parsed.costUsd = retained.costUsd;
+      }
+      return { proc, rawStderr: proc.stderr, parsed };
     };
 
     const toResult = (
diff --git a/packages/adapters/pi-local/src/server/execute.ts b/packages/adapters/pi-local/src/server/execute.ts
index 0274d2810e5..f978290e4cc 100644
--- a/packages/adapters/pi-local/src/server/execute.ts
+++ b/packages/adapters/pi-local/src/server/execute.ts
@@ -142,7 +142,7 @@ async function buildPiSkillsDir(config: Record<string, unknown>): Promise<string
 }
 
 function resolvePiBiller(env: Record<string, string>, provider: string | null): string {
-  return inferOpenAiCompatibleBiller(env, null) ?? provider ?? "unknown";
+  return provider === "openai" ? inferOpenAiCompatibleBiller(env, "openai") ?? "unknown" : provider ?? "unknown";
 }
 
 async function ensureSessionsDir(): Promise<string> {
@@ -738,7 +738,9 @@ export async function execute(ctx: AdapterExecutionContext): Promise<AdapterExec
       };
 
       const consumeAccounting = createPiJsonlParser();
-      const accountingLog = createUsageCheckpointLog(bufferedOnLog, ctx.onUsage, stdout => {
+      let hasAccounting = false;
+      const accountingLog = createUsageCheckpointLog(bufferedOnLog, ctx.onUsage ?? (async () => {}), stdout => {
+        hasAccounting = true;
         const parsed = consumeAccounting(stdout);
         return { usage: parsed.usage, costUsd: parsed.usage.costUsd, usageBasis: "per_run", provider, biller: resolvePiBiller(runtimeEnv, provider), billingType: "unknown", model, complete: parsed.sawAgentEnd };
       });
@@ -761,11 +763,15 @@ export async function execute(ctx: AdapterExecutionContext): Promise<AdapterExec
         await onLog("stdout", stdoutBuffer);
       }
 
-      return {
-        proc,
-        rawStderr: proc.stderr,
-        parsed: parsePiJsonl(proc.stdout),
-      };
+      // Display output is capped by the process transport. Keep accounting
+      // from the full stream, including when no checkpoint callback is installed.
+      const parsed = parsePiJsonl(proc.stdout);
+      if (hasAccounting) {
+        const retained = consumeAccounting("");
+        parsed.usage = retained.usage;
+        parsed.sawAgentEnd = retained.sawAgentEnd;
+      }
+      return { proc, rawStderr: proc.stderr, parsed };
     };
 
     const toResult = (
diff --git a/server/src/__tests__/adapter-cost-failure-paths.test.ts b/server/src/__tests__/adapter-cost-failure-paths.test.ts
index 239d9ca5ce2..b831a1e0476 100644
--- a/server/src/__tests__/adapter-cost-failure-paths.test.ts
+++ b/server/src/__tests__/adapter-cost-failure-paths.test.ts
@@ -86,6 +86,41 @@ describe("CLI adapter accounting on timeout", () => {
     onUsage.mockRejectedValue(new Error("Receipt persistence failed"));
     await expect(execute(context)).rejects.toThrow("Receipt persistence failed");
   });
+  it.each(cases.filter(f => ["pi", "opencode"].includes(f.name)))("$name preserves full-stream accounting after stdout truncation", async (fixture) => {
+    const dir = await mkdtemp(join(tmpdir(), "paperclip-accounting-tail-")); directories.push(dir);
+    const command = join(dir, "runtime"); await writeFile(command, "#!/bin/sh\nprintf 'anthropic  test\\n'\n", { mode: 0o755 });
+    const execute = await fixture.execute();
+    for (const checkpoint of [true, false]) for (const timedOut of [false, true]) for (const missingPrice of [false, true]) {
+      const early = structuredClone(fixture.event) as any;
+      if (missingPrice) {
+        if (fixture.name === "pi") delete early.message.usage.cost;
+        else delete early.part.cost;
+      }
+      const end = fixture.name === "pi" && !timedOut ? '\n{"type":"agent_end","messages":[]}' : "";
+      const first = JSON.stringify(early) + "\n";
+      const noise = JSON.stringify({ type: "text", part: { text: "x".repeat(9 * 1024 * 1024) } }) + "\n";
+      const last = JSON.stringify(fixture.event) + end;
+      processResult.mockImplementation(async (_run, _target, _command, _args, options) => {
+        for (const record of [first, noise, last]) {
+          for (let offset = 0; offset < record.length; offset += 65521) await options.onLog("stdout", record.slice(offset, offset + 65521));
+        }
+        return { exitCode: timedOut ? null : 0, signal: timedOut ? "SIGTERM" : null, timedOut, stdout: (first + noise + last).slice(-4 * 1024 * 1024), stderr: "", pid: 123, startedAt: new Date().toISOString() };
+      });
+      const onUsage = checkpoint ? vi.fn() : undefined;
+      const result = await execute({
+        runId: "tail-run", agent: { id: "test-agent", companyId: "test-company", name: "Accounting", adapterType: `${fixture.name}_local`, adapterConfig: {} },
+        runtime: { sessionId: null, sessionParams: null, sessionDisplayId: null, taskKey: null },
+        config: { engine: "cli", command, cwd: dir, model: "anthropic/test", paperclipRuntimeSkills: [], env: { ANTHROPIC_API_KEY: "fixture", OPENAI_BASE_URL: "https://unrelated-proxy.example/v1", OPENROUTER_API_KEY: "unrelated-key", OPENCODE_ALLOW_ALL_MODELS: "1" } },
+        context: {}, onLog: async () => {}, onUsage,
+      });
+      expect(result.usage).toMatchObject({ inputTokens: 40, outputTokens: 20, cachedInputTokens: 200 });
+      expect(result.costUsd).toBe(missingPrice ? null : 0.008);
+      expect(result.biller).toBe("anthropic");
+      expect(result.usageComplete).toBe(!timedOut);
+      if (onUsage) expect(onUsage.mock.calls.at(-1)![0]).toMatchObject({ usage: result.usage, costUsd: result.costUsd });
+    }
+  });
+
   it.each(cases)("$name retains observed accounting when the process times out", async (fixture) => {
     const dir = await mkdtemp(join(tmpdir(), "paperclip-accounting-adapter-")); directories.push(dir);
     const command = join(dir, "runtime"); await writeFile(command, "#!/bin/sh\nprintf 'openai  test\\n'\n", { mode: 0o755 });
diff --git a/server/src/__tests__/ai-connections.test.ts b/server/src/__tests__/ai-connections.test.ts
index 3d8632114a4..dbd467740bf 100644
--- a/server/src/__tests__/ai-connections.test.ts
+++ b/server/src/__tests__/ai-connections.test.ts
@@ -84,6 +84,40 @@ describe("managed AI connections", () => {
     } finally { fetchSpy.mockRestore(); }
   });
 
+  it("serializes quota exchange with a concurrent secret edit and runtime credential read", async () => {
+    const owner = "quota-race-owner";
+    await db.insert(companyMemberships).values({ companyId, principalId: owner, principalType: "user", status: "active", membershipRole: "member" });
+    const original = JSON.stringify({ tokens: { access_token: "old-access", refresh_token: "single-use", id_token: "identity", account_id: "race-account" } });
+    const account = await service.save(companyId, owner, { provider: "openai", method: "subscription", ownership: "personal", name: "Racing refresh", loginSessionId: "fixture", agentIds: [], allAgents: true }, original);
+    const [row] = await service.quotaAccounts(companyId, owner);
+    const secretId = row.grant.credentialSecretRefs.find(ref => ref.configPath === "ai.credential")!.secretId;
+    const exchangeStarted = deferredSignal();
+    const releaseExchange = deferredSignal();
+    const request = vi.spyOn(globalThis, "fetch").mockImplementation(async () => {
+      exchangeStarted.resolve(); await releaseExchange.promise;
+      return Response.json({ access_token: "new-access", refresh_token: "new-refresh" });
+    });
+    let runtime: Awaited<ReturnType<typeof prepareManagedAiRuntime>> | undefined;
+    const refreshing = service.refreshQuotaCredential(row, original, new AbortController().signal);
+    try {
+      await exchangeStarted.promise;
+      const edit = secretService(db).update(secretId, { description: "Changed during refresh" });
+      const preparing = prepareManagedAiRuntime(db, { companyId, agentId, responsibleUserId: owner, adapterType: "codex_local", binding: { provider: "openai", method: "subscription", mode: "responsible_user" }, config: {} });
+      // Wait for the runtime's old-token read to reach its bookkeeping update.
+      // After the refresh commits, resolution must detect the changed version.
+      await vi.waitFor(async () => {
+        const waiting = await db.execute(sql`select 1 from pg_stat_activity where datname = current_database() and wait_event_type = 'Lock' and query like '%last_resolved_at%'`);
+        expect(waiting.length).toBeGreaterThan(0);
+      });
+      releaseExchange.resolve();
+      const results = await Promise.all([refreshing, edit, preparing]);
+      runtime = results[2];
+      expect(JSON.parse(await readFile(path.join(String(runtime.config.env.CODEX_HOME), "auth.json"), "utf8"))).toMatchObject({ tokens: { access_token: "new-access", refresh_token: "new-refresh" } });
+      expect(JSON.parse(await service.credential(row))).toMatchObject({ tokens: { access_token: "new-access", refresh_token: "new-refresh" } });
+      expect((await secretService(db).getById(secretId))?.description).toBe("Changed during refresh");
+    } finally { releaseExchange.resolve(); await runtime?.cleanup(); request.mockRestore(); }
+  }, 10_000);
+
   it("serializes quota credential refresh, persists rotation, and defers while the provider is active", async () => {
     const owner = "quota-refresh-owner";
     await db.insert(companyMemberships).values({ companyId, principalId: owner, principalType: "user", status: "active", membershipRole: "member" });
@@ -93,6 +127,14 @@ describe("managed AI connections", () => {
     const request = vi.spyOn(globalThis, "fetch").mockImplementation(async () => new Response(JSON.stringify({ access_token: "fresh-access", refresh_token: "rotated-once" })));
     const signal = new AbortController().signal;
     try {
+      // A pre-existing transaction may own a secret row before asking for the
+      // company file lock. Refresh must defer before exchanging its token.
+      await db.transaction(async tx => {
+        const secretId = row.grant.credentialSecretRefs.find(ref => ref.configPath === "ai.credential")!.secretId;
+        await tx.select().from(companySecrets).where(eq(companySecrets.id, secretId)).for("update");
+        await expect(service.refreshQuotaCredential(row, original, signal)).rejects.toThrow();
+        expect(request).not.toHaveBeenCalled();
+      });
       const activeId = randomUUID();
       await db.insert(heartbeatRuns).values({ id: activeId, companyId, agentId, invocationSource: "on_demand", status: "running", contextSnapshot: { aiConnection: { grantId: account.grantId } } });
       await expect(service.refreshQuotaCredential(row, original, signal)).rejects.toThrow("provider_unavailable");
@@ -1069,3 +1111,9 @@ describe("AI connection recovery delivery", () => {
     }, 30000,
   );
 });
+
+function deferredSignal() {
+  let resolve!: () => void;
+  const promise = new Promise<void>(done => { resolve = done; });
+  return { promise, resolve };
+}
diff --git a/server/src/__tests__/cost-accounting-operations-edges.test.ts b/server/src/__tests__/cost-accounting-operations-edges.test.ts
index 156d3092c0d..6a97dcc5978 100644
--- a/server/src/__tests__/cost-accounting-operations-edges.test.ts
+++ b/server/src/__tests__/cost-accounting-operations-edges.test.ts
@@ -175,11 +175,30 @@ const support = await getEmbeddedPostgresTestSupport();
     expect(result).toMatchObject({costUsdExact:"0.040000001",complete:true,usage:{inputTokens:14,cachedInputTokens:22,outputTokens:6}});
     await recorder.capture({attemptId:randomUUID(),usage,complete:false,billingType:"subscription"});
     const uncertain = await recorder.complete({exitCode:1,signal:null,timedOut:false,usage});
-    expect(uncertain).toMatchObject({costUsd:null,costUsdExact:null,billingType:"unknown"});
+    expect(uncertain).toMatchObject({costUsd:0.040000001,costUsdExact:"0.040000001",costStatus:"unpriced",billingType:"unknown"});
     const partial = await recorder.complete({exitCode:1,signal:null,timedOut:false});
     expect(partial.complete).toBe(false);
     expect(partial.usage?.inputTokens).toBe(21);
   });
+  it.each(["block", "allow"] as const)("keeps known attempted-run spend when unknown prices %s new work", async (unpricedUsagePolicy) => {
+    const f = await fixture(), budgets = budgetService(db);
+    await budgets.upsertPolicy(f.company.id, { scopeType: "company", scopeId: f.company.id, amount: 100, unpricedUsagePolicy }, "board");
+    await reserveRunBudget(db, f.company.id, f.run.id, null);
+    const recorder = await createRunUsageRecorder(db, { companyId: f.company.id, runId: f.run.id, adapterType: "process" }, path.join(directory, randomUUID()));
+    await recorder.capture({ attemptId: randomUUID(), complete: true, billingType: "metered_api", usage, costUsdExact: "0.010000001" });
+    const aggregate = await recorder.capture({ attemptId: randomUUID(), complete: true, billingType: "metered_api", usage, costUsd: null, costStatus: "unpriced" });
+    expect(aggregate).toMatchObject({ costUsdExact: "0.010000001", costStatus: "unpriced", complete: true });
+    await db.update(heartbeatRuns).set({ status: "failed", finishedAt: new Date() }).where(eq(heartbeatRuns.id, f.run.id));
+    expect(await accountRunCost(db, f.run.id)).toBe(true);
+    expect(await accountRunCost(db, f.run.id)).toBe(false);
+    expect(await costService(db).summary(f.company.id)).toMatchObject({ spendCentsExact: "1.0000001", unpricedEventCount: 1, pricingComplete: false, pendingRunCount: 0 });
+    const [runtime] = await db.select().from(agentRuntimeState).where(eq(agentRuntimeState.agentId, f.agent.id));
+    expect(runtime.totalCostCents).toBe(1.0000001);
+    const [reservation] = await db.select().from(budgetReservations).where(eq(budgetReservations.runId, f.run.id));
+    expect(reservation.state).toBe("settled");
+    expect((await budgets.getInvocationBlock(f.company.id, f.agent.id)) !== null).toBe(unpricedUsagePolicy === "block");
+  });
+
   it("refuses invalid checkpoints and does not certify a run after capture failure", async () => {
     const f = await fixture();
     const recorder = await createRunUsageRecorder(db,{companyId:f.company.id,runId:f.run.id,adapterType:"process"},path.join(directory,randomUUID()));
diff --git a/server/src/__tests__/heartbeat-stale-queue-invalidation.test.ts b/server/src/__tests__/heartbeat-stale-queue-invalidation.test.ts
index 882a81e5d2b..719e4ea9778 100644
--- a/server/src/__tests__/heartbeat-stale-queue-invalidation.test.ts
+++ b/server/src/__tests__/heartbeat-stale-queue-invalidation.test.ts
@@ -196,7 +196,9 @@ describeEmbeddedPostgres("heartbeat stale queued-run invalidation", () => {
       }
       await new Promise((resolve) => setTimeout(resolve, 50));
     }
-    await new Promise((resolve) => setTimeout(resolve, 50));
+    // Terminal run status precedes accounting and comment finalization. Drain
+    // the registered executions before taking TRUNCATE locks during teardown.
+    await heartbeat.drainActiveRunExecutions();
     await cleanupHeartbeatInvalidationFixture(db);
   });
 
diff --git a/server/src/services/ai-connection-runtime.ts b/server/src/services/ai-connection-runtime.ts
index 534f5cf023a..b199dbc2bcf 100644
--- a/server/src/services/ai-connection-runtime.ts
+++ b/server/src/services/ai-connection-runtime.ts
@@ -11,7 +11,7 @@ import {
 } from "@paperclipai/shared";
 import { aiConnectionService } from "./ai-connections.js";
 import { secretService } from "./secrets.js";
-import { decideCodexAuthMerge } from "@paperclipai/adapter-codex-local/server";
+import { decideCodexAuthMerge, withAccountHomeSecretMutationLock } from "@paperclipai/adapter-codex-local/server";
 import type { AdapterExecutionTarget } from "@paperclipai/adapter-utils/execution-target";
 import { runAdapterExecutionTargetProcess } from "@paperclipai/adapter-utils/execution-target";
 import { decideGrokAuthMerge } from "@paperclipai/adapter-grok-local/server";
@@ -314,7 +314,7 @@ export async function prepareManagedAiRuntime(
           if (subscriptionFile) {
             const refreshed = await readFile(authFile, "utf8");
             if (refreshed !== value)
-              await db.transaction(async (tx) => {
+              await withAccountHomeSecretMutationLock(undefined, input.companyId, () => db.transaction(async (tx) => {
                 const [grant] = await tx
                   .select()
                   .from(connectionGrants)
@@ -374,7 +374,7 @@ export async function prepareManagedAiRuntime(
                   .update(connectionGrants)
                   .set({ updatedAt: new Date() })
                   .where(eq(connectionGrants.id, grant.id));
-              });
+              }));
           }
         } finally {
           if (home) await rm(home, { recursive: true, force: true });
diff --git a/server/src/services/ai-connections.ts b/server/src/services/ai-connections.ts
index 767ae7ecb0c..3b452933784 100644
--- a/server/src/services/ai-connections.ts
+++ b/server/src/services/ai-connections.ts
@@ -1,3 +1,4 @@
+import { withAccountHomeSecretMutationLock } from "@paperclipai/adapter-codex-local/server";
 import { syncConnectionCredentialBindings } from "./connection-credential-bindings.js";
 import { createHash, randomUUID } from "node:crypto";
 import { and, eq, inArray, or, sql } from "drizzle-orm";
@@ -401,7 +402,7 @@ export function aiConnectionService(db: Db) {
       } satisfies AiConnectionAttribution,
     };
   }
-  async function credential(row: Pick<Awaited<ReturnType<typeof select>>, "connection" | "grant">) {
+  async function credential(row: Pick<Awaited<ReturnType<typeof select>>, "connection" | "grant">, retry = 0): Promise<string> {
     const ref = row.grant.credentialSecretRefs.find(
       (r) => r.configPath === "ai.credential",
     );
@@ -431,6 +432,7 @@ export function aiConnectionService(db: Db) {
       responsibleUserId: row.grant.subjectUserId,
       actorType: "system" as const,
     };
+    let value: string;
     if (secret.scope === "user") {
       if (
         secret.ownerUserId !== row.grant.subjectUserId ||
@@ -448,14 +450,21 @@ export function aiConnectionService(db: Db) {
         context,
       );
       if (!result) throw unprocessable("Reconnect this AI account");
-      return result.value;
+      value = result.value;
+    } else {
+      value = await secrets.resolveSecretValue(row.connection.companyId, secret.id, "latest", context);
     }
-    return secrets.resolveSecretValue(
-      row.connection.companyId,
-      secret.id,
-      "latest",
-      context,
-    );
+    // Resolution records lastResolvedAt and can wait behind a rotating writer.
+    // Re-read after that wait instead of handing a run the pre-rotation token.
+    const [latest] = await db.select().from(companySecrets).where(and(
+      eq(companySecrets.id, secret.id), eq(companySecrets.companyId, row.connection.companyId),
+    ));
+    if (!latest || latest.status !== "active") throw unprocessable("Reconnect this AI account");
+    if (latest.latestVersion !== secret.latestVersion) {
+      if (retry >= 2) throw unprocessable("AI credentials are changing. Retry this execution.", { code: "ai_connection_busy" });
+      return credential(row, retry + 1);
+    }
+    return value;
   }
   async function save(
     companyId: string,
@@ -498,7 +507,7 @@ export function aiConnectionService(db: Db) {
       );
     const id = reconnect?.connection.id ?? randomUUID();
     const grantId = reconnect?.grant.id ?? randomUUID();
-    return db.transaction(async (tx) => {
+    return withAccountHomeSecretMutationLock(undefined, companyId, () => db.transaction(async (tx) => {
       const secrets = secretService(tx);
       if (sessionId) {
         const [session] = await tx
@@ -803,7 +812,7 @@ export function aiConnectionService(db: Db) {
         details: { provider: input.provider, method: input.method, grantId },
       });
       return { connectionId: id, grantId };
-    });
+    }));
   }
   /** A late failure must never invalidate credentials that were refreshed or reconnected meanwhile. */
   async function markAuthenticationFailed(input: {
@@ -813,7 +822,7 @@ export function aiConnectionService(db: Db) {
     runStartedAt: Date;
     attribution: AiConnectionAttribution & { identity: string };
   }) {
-    return db.transaction(async (tx) => {
+    return withAccountHomeSecretMutationLock(undefined, input.companyId, () => db.transaction(async (tx) => {
       const { attribution } = input;
       const [grant] = await tx.select().from(connectionGrants).where(and(
         eq(connectionGrants.companyId, input.companyId),
@@ -847,22 +856,24 @@ export function aiConnectionService(db: Db) {
         entityType: "tool_connection", entityId: connection.id,
         details: { provider: attribution.provider, grantId: grant.id },
       });
-    });
+    }));
   }
   /** Refresh only the selected vaulted identity, serializing rotation and reconnect. */
   async function refreshQuotaCredential(row: Parameters<typeof credential>[0], failedValue: string, signal: AbortSignal) {
-    return db.transaction(async (tx) => {
+    return withAccountHomeSecretMutationLock(undefined, row.connection.companyId, () => db.transaction(async (tx) => {
+      // Do not wait on a transaction that might itself be waiting for the file
+      // lock. All database locks must be available before consuming OAuth tokens.
       const companyId = row.connection.companyId;
       const [grant] = await tx.select().from(connectionGrants).where(and(
         eq(connectionGrants.id, row.grant.id), eq(connectionGrants.companyId, companyId),
         eq(connectionGrants.connectionId, row.connection.id),
-      )).for("update");
+      )).for("update", { noWait: true });
       if (!grant || grant.status !== "active") throw new Error("credentials_unavailable");
       const ref = grant.credentialSecretRefs.find(ref => ref.configPath === "ai.credential");
       if (!ref) throw new Error("credentials_unavailable");
       await tx.select({ id: companySecrets.id }).from(companySecrets).where(and(
         eq(companySecrets.id, ref.secretId), eq(companySecrets.companyId, companyId),
-      )).for("update");
+      )).for("update", { noWait: true });
       const current = await aiConnectionService(tx as unknown as Db).credential({ connection: row.connection, grant });
       signal.throwIfAborted();
       // Another poll, an agent, or reconnect already supplied a newer credential.
@@ -904,7 +915,7 @@ export function aiConnectionService(db: Db) {
         action: "ai_connection.credential_refreshed", entityType: "tool_connection", entityId: row.connection.id,
         details: { provider: "openai", grantId: grant.id } });
       return refreshed;
-    });
+    }));
   }
   // A quota read uses the same credential audience as execution. Operator status
   // alone never grants access to another member's personal subscription.
diff --git a/server/src/services/native-runtime/native-session-executor.test.ts b/server/src/services/native-runtime/native-session-executor.test.ts
index 185f3416533..d07fecace03 100644
--- a/server/src/services/native-runtime/native-session-executor.test.ts
+++ b/server/src/services/native-runtime/native-session-executor.test.ts
@@ -191,6 +191,17 @@ const state = vi.hoisted(() => ({
   release: null as null | (() => void),
 }));
 
+const accountingEvents = vi.hoisted(() => ({ committed: undefined as undefined | ((event: PrpEvent) => Promise<void>) }));
+vi.mock("./paperclip-control-plane-port.js", async importOriginal => {
+  const original = await importOriginal<typeof import("./paperclip-control-plane-port.js")>();
+  return { ...original, PaperclipControlPlanePort: class extends original.PaperclipControlPlanePort {
+    constructor(...args: ConstructorParameters<typeof original.PaperclipControlPlanePort>) {
+      super(...args);
+      accountingEvents.committed = args[2]?.onCommittedEvent;
+    }
+  } };
+});
+
 const grokCopyBack = vi.hoisted(() => vi.fn(async (_input: { readSandboxAuth: () => Promise<Buffer>; hostHomeDir: string }) => undefined));
 vi.mock("@paperclipai/adapter-grok-local/server", async importOriginal => ({
   ...await importOriginal<typeof import("@paperclipai/adapter-grok-local/server")>(),
@@ -4873,7 +4884,7 @@ function leaseDb(
         where: () => query,
         orderBy: () => query,
         for: () => query,
-        limit: () => Promise.resolve(rows),
+        limit: () => query,
       };
       return query;
     },
@@ -4881,7 +4892,9 @@ function leaseDb(
   const insert = (table: unknown) => ({
     values: (values: Record<string, unknown>) => {
       updates.push({ table, values });
-      return { returning: async () => [values] };
+      const query = { returning: async () => [values], onConflictDoUpdate: () => query, onConflictDoNothing: () => query,
+        then: Promise.resolve([values]).then.bind(Promise.resolve([values])) };
+      return query;
     },
   });
   const tx = {
@@ -5134,6 +5147,27 @@ describe("native startup restart detachment", () => {
   });
 });
 
+describe("native failed-turn accounting", () => {
+  beforeEach(() => vi.spyOn(issueServiceModule, "issueService").mockReturnValue({ update: vi.fn(async () => ({ status: "blocked", statusVersion: 1 })) } as unknown as ReturnType<typeof issueServiceModule.issueService>));
+  afterEach(() => vi.restoreAllMocks());
+  it.each(["turn.failed", "turn.cancelled", "turn.interrupted", "missing_terminal", "session_total", "empty_usage", "different_turn"])("preserves run usage for %s without certifying incomplete evidence", async (scenario) => {
+    const onUsage = vi.fn(async (_receipt: import("@paperclipai/adapter-utils").AdapterUsageCheckpoint) => {});
+    const failure = new Error("provider_transport_failed: no semantic result");
+    state.execute.mockReset().mockImplementationOnce(async () => {
+      const usage = { inputTokens: 120, cacheReadTokens: 100, outputTokens: 10, providerCostUsd: 0.25 };
+      await accountingEvents.committed!({ eventType: "item.completed", turnId: "turn", emittedAt: new Date().toISOString(), payload: { kind: "usage", usage: scenario === "session_total" ? { total: usage } : { runDelta: scenario === "empty_usage" ? { requests: 1 } : usage } } } as unknown as PrpEvent);
+      if (scenario !== "missing_terminal") await accountingEvents.committed!({ eventType: scenario.startsWith("turn.") ? scenario : "turn.failed", turnId: scenario === "different_turn" ? "another-turn" : "turn", emittedAt: new Date().toISOString(), payload: { status: "failed" } } as unknown as PrpEvent);
+      throw failure;
+    });
+    await expect(executePaperclipNativeSession({ db: leaseDb(), execution: { ...execution, provider: { kind: "codex", model: "gpt-6-astra" } } as NativeExecutionInput, runnerInstanceId: "runner", onUsage })).rejects.toBe(failure);
+    if (["session_total", "empty_usage"].includes(scenario)) expect(onUsage).not.toHaveBeenCalled();
+    else {
+      expect(onUsage).toHaveBeenLastCalledWith(expect.objectContaining({ complete: scenario.startsWith("turn."), costUsd: 0.25, usageBasis: "per_run", usage: { inputTokens: 20, cachedInputTokens: 100, outputTokens: 10 } }));
+      expect(onUsage.mock.calls[0]?.[0]).toMatchObject({ complete: false });
+    }
+  });
+});
+
 describe("native resumed preparation timing", () => {
   it("keeps answered-question ingress at the run root rather than charging it to preparation", async () => {
     const answeredAtMs = Date.now();
diff --git a/server/src/services/native-runtime/native-session-executor.ts b/server/src/services/native-runtime/native-session-executor.ts
index 4ba162a2e29..4b7a7851f8e 100644
--- a/server/src/services/native-runtime/native-session-executor.ts
+++ b/server/src/services/native-runtime/native-session-executor.ts
@@ -7838,6 +7838,22 @@ async function executePaperclipNativeSessionWithinScope(
     binding: { ...input.execution.binding, normalizedSessionId: nativeSessionKey(input.execution), runnerSourceInstanceId: effectiveRunnerInstanceId },
     resolve: resolveNativeRuntimeRequest,
   });
+  let observedAccountingUsage: Record<string, unknown> | null = null;
+  let observedAccountingTurn: string | undefined;
+  const persistAccountingUsage = async (usage: Record<string, unknown> | null, complete: boolean) => {
+    const accountingUsage = normalizeNativeUsage(usage, { inputIncludesCacheReads: input.execution.provider.kind === "codex" });
+    const accountingCost = nativeUsageCostUsd(usage, input.execution.provider);
+    const billing = resolveNativeBilling(input.execution.provider, input.runnerEnvironment, input.billingIdentity);
+    await input.onUsage?.({ usage: accountingUsage, ...billing, complete, usageBasis: "per_run",
+      model: input.execution.provider.model ?? "unknown", costUsd: accountingCost ?? null });
+    if (!input.onUsage) await input.db.update(heartbeatRuns).set({
+      costAccountingPending: true,
+      usageJson: sql`coalesce(${heartbeatRuns.usageJson}, '{}'::jsonb) || ${JSON.stringify({
+        ...accountingUsage, ...billing, accountingReceiptReady: complete, model: input.execution.provider.model ?? "unknown",
+        costUsd: accountingCost ?? null, usageSource: "per_run",
+      })}::jsonb`,
+    }).where(and(eq(heartbeatRuns.id, input.execution.binding.runId), eq(heartbeatRuns.companyId, input.execution.binding.companyId), isNull(heartbeatRuns.costAccountedAt)));
+  };
   let completedConversationReply: PrpEvent | null = null;
   const controlPlane = new PaperclipControlPlanePort(
     input.db,
@@ -7854,6 +7870,25 @@ async function executePaperclipNativeSessionWithinScope(
     },
     {
       onCommittedEvent: async (event) => {
+        const payload = record(event.payload);
+        const usage = record(payload.usage);
+        const delta = record(usage.runDelta);
+        if (event.eventType === "turn.started" && observedAccountingUsage) {
+          observedAccountingTurn = undefined;
+          await persistAccountingUsage(observedAccountingUsage, false);
+        }
+        // Only an explicit run delta is safe here: session totals can include
+        // earlier work. Save provisional evidence before ancillary finalizers.
+        if (payload.kind === "usage" && numericUsageField(delta, ["inputTokens"]) !== undefined
+          && numericUsageField(delta, ["outputTokens"]) !== undefined) {
+          observedAccountingUsage = { runDelta: usage.runDelta };
+          observedAccountingTurn = event.turnId;
+          await persistAccountingUsage(observedAccountingUsage, false);
+        }
+        if (["turn.failed", "turn.cancelled", "turn.interrupted"].includes(event.eventType)
+          && observedAccountingUsage && event.turnId === observedAccountingTurn) {
+          await persistAccountingUsage(observedAccountingUsage, true);
+        }
         await toolTrace.observe(event);
         if (event.eventType === "item.completed" &&
             record(event.payload).kind === "agentMessage" &&
@@ -8602,18 +8637,8 @@ async function executePaperclipNativeSessionWithinScope(
     );
     // Persist provider accounting before any workspace/issue finalization. A
     // detached controller or failed finalizer must not lose a completed turn.
-    const accountingUsage = normalizeNativeUsage(native.usage, { inputIncludesCacheReads: input.execution.provider.kind === "codex" });
-    const accountingCost = nativeUsageCostUsd(native.usage, input.execution.provider);
-    const billing = resolveNativeBilling(input.execution.provider, input.runnerEnvironment, input.billingIdentity);
-    await input.onUsage?.({ usage: accountingUsage, ...billing, complete: true, usageBasis: "per_run",
-      model: input.execution.provider.model ?? "unknown", costUsd: accountingCost ?? null });
-    if (!input.onUsage) await input.db.update(heartbeatRuns).set({
-      costAccountingPending: true,
-      usageJson: sql`coalesce(${heartbeatRuns.usageJson}, '{}'::jsonb) || ${JSON.stringify({
-        ...accountingUsage, ...billing, accountingReceiptReady: true, model: input.execution.provider.model ?? "unknown",
-        costUsd: accountingCost ?? null, usageSource: "per_run",
-      })}::jsonb`,
-    }).where(and(eq(heartbeatRuns.id, input.execution.binding.runId), eq(heartbeatRuns.companyId, input.execution.binding.companyId), isNull(heartbeatRuns.costAccountedAt)));
+    native = { ...native, usage: native.usage ?? observedAccountingUsage };
+    await persistAccountingUsage(native.usage, true);
     try {
       await completeManagedNativeCredentialTurn(managedCredentialSession);
     } catch {
diff --git a/server/src/services/run-cost-accounting.ts b/server/src/services/run-cost-accounting.ts
index 895e2443acb..b1126462a8b 100644
--- a/server/src/services/run-cost-accounting.ts
+++ b/server/src/services/run-cost-accounting.ts
@@ -62,7 +62,7 @@ export async function accountRunCost(db: Db, runId: string, hooks: BudgetService
       providerRequestId: text(usage.providerRequestId),
       pricingProvenance: object(usage.pricingProvenance),
       model: text(usage.model) ?? "unknown", billingType,
-      costStatus: costUsd === null && billingType !== "subscription_included" && hasBillableEvidence ? "unpriced" : usage.costStatus === "estimated" ? "estimated" : "reported",
+      costStatus: (costUsd === null || usage.costStatus === "unpriced") && billingType !== "subscription_included" && hasBillableEvidence ? "unpriced" : usage.costStatus === "estimated" ? "estimated" : "reported",
       inputTokens: amount(usage.inputTokens) ?? 0, cachedInputTokens: amount(usage.cachedInputTokens) ?? 0, outputTokens: amount(usage.outputTokens) ?? 0,
       costCents, occurredAt: run.finishedAt ?? run.createdAt,
     };
diff --git a/server/src/services/usage-receipts.ts b/server/src/services/usage-receipts.ts
index c629b41c567..0421712dda4 100644
--- a/server/src/services/usage-receipts.ts
+++ b/server/src/services/usage-receipts.ts
@@ -152,13 +152,15 @@ export async function createRunUsageRecorder(db: Db, input: { companyId: string;
     if (parts.length > 1) {
       let total = 0n, priced = true;
       for (const part of parts) {
-        const cost = part.cacheAdjustedCostUsd ?? part.costUsdExact ?? part.costUsd;
-        if (cost == null) priced = false; else total += usdToUnits(cost);
+        const subscription = ["subscription", "subscription_included"].includes(part.billingType ?? "");
+        const cost = subscription ? 0 : part.cacheAdjustedCostUsd ?? part.costUsdExact ?? part.costUsd;
+        if (cost == null || (!subscription && part.costStatus === "unpriced")) priced = false;
+        if (cost != null) total += usdToUnits(cost);
       }
       if (new Set(parts.map(part => part.billingType ?? "unknown")).size > 1) receipt.billingType = "unknown";
       const decimal = `${total / 1_000_000_000n}.${String(total % 1_000_000_000n).padStart(9, "0")}`;
-      receipt.costUsdExact = priced ? decimal : null;
-      receipt.costUsd = priced ? Number(decimal) : null;
+      receipt.costUsdExact = decimal;
+      receipt.costUsd = Number(decimal);
       receipt.cacheAdjustedCostUsd = null;
       receipt.usageByModel = undefined;
       receipt.costStatus = priced && parts.some(part => part.costStatus === "estimated") ? "estimated" : priced ? "reported" : "unpriced";
diff --git a/ui/src/components/AccountQuotaPanels.test.tsx b/ui/src/components/AccountQuotaPanels.test.tsx
index c87a755b924..e5fcef037ae 100644
--- a/ui/src/components/AccountQuotaPanels.test.tsx
+++ b/ui/src/components/AccountQuotaPanels.test.tsx
@@ -15,9 +15,10 @@ describe("account quota panels", () => {
   });
   it("displays unknown utilization without inventing zero percent", () => {
     const html = renderToStaticMarkup(<AccountQuotaPanels accounts={[
-      { provider: "openai", accountKey: "a", ok: true, windows: [{ label: "Credits", usedPercent: null, resetsAt: null, valueLabel: "$5 remaining" }] },
+      { provider: "openai", accountKey: "a", ok: true, windows: [{ label: "Credits", usedPercent: null, resetsAt: "2026-10-05T00:00:00Z", valueLabel: "$5 remaining" }] },
     ]} />);
     expect(html).toContain("$5 remaining");
+    expect(html).toContain(`Resets ${new Date("2026-10-05T00:00:00Z").toLocaleString()}`);
     expect(html).not.toContain("0%");
     expect(html).not.toContain('role="progressbar"');
   });
diff --git a/ui/src/components/AccountQuotaPanels.tsx b/ui/src/components/AccountQuotaPanels.tsx
index 31cd43d05d7..ea9b84c9230 100644
--- a/ui/src/components/AccountQuotaPanels.tsx
+++ b/ui/src/components/AccountQuotaPanels.tsx
@@ -27,9 +27,12 @@ export function AccountQuotaPanels({
             </p>
           )}
           {account.windows.map((window, index) => window.usedPercent == null ? (
-            <div key={`${window.label}:${index}`} className="flex justify-between gap-3 text-sm">
-              <span>{window.label}</span>
-              <span className="text-muted-foreground">{window.valueLabel ?? "Usage not reported"}</span>
+            <div key={`${window.label}:${index}`} className="space-y-1 text-sm">
+              <div className="flex justify-between gap-3">
+                <span>{window.label}</span>
+                <span className="text-muted-foreground">{window.valueLabel ?? "Usage not reported"}</span>
+              </div>
+              {window.resetsAt && <p className="text-xs text-muted-foreground">Resets {new Date(window.resetsAt).toLocaleString()}</p>}
             </div>
           ) : (
             <QuotaBar