test(#385): match new compress panel format in export-cmd helper

[ranxianglei]

One-line test fix, no production code touched.

tests/export-cmd.test.ts:89 asserted the legacy compress-result format (/1 block/). #377 (cca0060) reworked the panel line to blocks: bN=mXXXXX–mYYYYY and updated four test files but missed this one — its branch predated #272's merge, so #377's CI never saw it. Result: 7 identical compress created a block failures on master (verified pre-existing on both acp-kernel 0.0.63 and 0.0.64, unrelated to any pin bump).

Verified: tests/export-cmd.test.ts 3/10 → 10/10; full suite 725/725.

Fixes #385

[github-actions]

📦 Built Extension Artifact

Branch: 2026-09-12_fix-export-cmd-format-assert (2e03a64)

Option A — Install from npm PR tag (recommended)

pi install npm:billion-context-pi@pr-386

Each push to this PR publishes a new version under the pr-386 npm tag.

Option B — Download artifact

1. Download the artifact from the Actions run
2. Extract the tarball and install:

tar xzf billion-context-pi-pr386.tgz
pi install ./package

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This comment is automatically updated on each push.

[ranxianglei]

🤖 Powered by ework · qwen3.8-27b

[bot] 🏷 Reviewed and verified — ready to merge.

Diff cleanliness: exactly 1 file, 1 line (tests/export-cmd.test.ts:89: /1 block/ → /blocks: b1=/). No unrelated changes, no whitespace churn, no version/lockfile touched. Clean.

Local verification on branch 2026-09-12_fix-export-cmd-format-assert (commit 2e03a64, base master 2bdc831):

• node --import tsx --test tests/export-cmd.test.ts → 10 pass / 0 fail (was 3 pass / 7 fail on master — the 7 failures were already reproduced and root-caused in master 测试红:export-cmd.test.ts 仍断言旧版 compress 结果格式(/1 block/),#377 改格式时漏更新 #385)
• Full npm test → 725 tests, 722 pass, 0 fail, 3 skipped (skips are pre-existing)
• npm run typecheck clean; npm run build success

Regex choice: /blocks: b1=/ matches the exact fix suggested in #385 and is also consistent with tests/compress-tool.test.ts:280 which asserts the same literal span for a single-block compress. Good.

Duplicate handling: my earlier bot PR #388 (opened 06:58Z by a previous session working #385, which missed this existing PR — duplicate-screening miss on our side) fixed the same line with /blocks: b\d+=/. Since #386 was opened first (06:52Z) and matches the issue's suggested regex, I kept yours and closed #388 as duplicate with an explanation. Nothing else pending against #385.

中文摘要:审查并本地验证了这个一行测试修复(export-cmd 由 7 fail 恢复全绿,全量 725/0 fail,typecheck/build 干净),diff 只有一行、无无关改动;已把重复的机器人 PR #388 关闭并打 duplicate 标签,本 PR 可以合并。