fix: export VideoClient from package entry point

CHANGELOG.md

@@ -2,6 +2,19 @@
 
 All notable changes to @blockrun/llm will be documented in this file.
 
+## Unreleased
+
+### Fixed
+
+- **Export `VideoClient` from the package entry point.** The class was
+  fully implemented in `src/video.ts` and documented in the README
+  (`import { VideoClient } from '@blockrun/llm'`), but the export was
+  missing from `src/index.ts`. Downstream consumers (Franklin,
+  franklin-canvas) had to hand-roll their own x402 + polling loop
+  against `/v1/videos/generations` even though a working client was
+  already shipped — they just couldn't reach it. Restores the
+  promised public surface; no source changes to `video.ts`.
+
 ## 2.1.0
 
 ### Added

src/index.ts

@@ -32,6 +32,7 @@
 export { LLMClient, default } from "./client";
 export { ImageClient } from "./image";
 export { MusicClient } from "./music";
+export { VideoClient } from "./video";
 export { SearchClient } from "./search";
 export {
   XClient,

test/unit/cost-log.test.ts

@@ -4,11 +4,18 @@ import * as path from 'path';
 import * as os from 'os';
 import { logCost, getCostSummary } from '../../src/cost-log.js';
 
-const COST_LOG = path.join(os.homedir(), '.blockrun', 'data', 'costs.jsonl');
+// `src/cost-log.ts` was rewritten to share the on-wire schema with
+// Franklin's AgentClient — new path is `~/.blockrun/cost_log.jsonl`,
+// new schema uses `ts` / `endpoint` / `cost_usd` instead of the
+// previous `timestamp` / `costUsd` / `inputTokens`. These tests track
+// the current shape.
+const COST_LOG = path.join(os.homedir(), '.blockrun', 'cost_log.jsonl');
 const BACKUP = COST_LOG + '.bak';
 
 describe('Cost Log Module', () => {
   beforeEach(() => {
+    // Move any real on-disk log out of the way so tests run against an
+    // empty file and don't permanently destroy the user's ledger.
     if (fs.existsSync(COST_LOG)) {
       fs.copyFileSync(COST_LOG, BACKUP);
       fs.unlinkSync(COST_LOG);
@@ -24,18 +31,18 @@ describe('Cost Log Module', () => {
 
   it('should log a cost entry', () => {
     logCost({
-      timestamp: '2026-03-22T10:00:00Z',
+      ts: Date.now() / 1000,
+      endpoint: '/v1/chat/completions',
+      cost_usd: 0.002,
       model: 'openai/gpt-5.4',
-      inputTokens: 100,
-      outputTokens: 50,
-      costUsd: 0.002,
     });
 
     expect(fs.existsSync(COST_LOG)).toBe(true);
     const content = fs.readFileSync(COST_LOG, 'utf-8').trim();
     const entry = JSON.parse(content);
     expect(entry.model).toBe('openai/gpt-5.4');
-    expect(entry.costUsd).toBe(0.002);
+    expect(entry.cost_usd).toBe(0.002);
+    expect(entry.endpoint).toBe('/v1/chat/completions');
   });
 
   it('should return empty summary when no logs', () => {
@@ -46,9 +53,9 @@ describe('Cost Log Module', () => {
   });
 
   it('should summarize multiple entries', () => {
-    logCost({ timestamp: '', model: 'openai/gpt-5.4', inputTokens: 100, outputTokens: 50, costUsd: 0.01 });
-    logCost({ timestamp: '', model: 'anthropic/claude-sonnet-4.6', inputTokens: 200, outputTokens: 100, costUsd: 0.02 });
-    logCost({ timestamp: '', model: 'openai/gpt-5.4', inputTokens: 50, outputTokens: 25, costUsd: 0.005 });
+    logCost({ ts: 1, endpoint: '/v1/chat/completions', cost_usd: 0.01,  model: 'openai/gpt-5.4' });
+    logCost({ ts: 2, endpoint: '/v1/chat/completions', cost_usd: 0.02,  model: 'anthropic/claude-sonnet-4.6' });
+    logCost({ ts: 3, endpoint: '/v1/chat/completions', cost_usd: 0.005, model: 'openai/gpt-5.4' });
 
     const summary = getCostSummary();
     expect(summary.calls).toBe(3);