fix(coding-agent): repair merged dev CI shard failures

[Yeachan-Heo]

Summary

Repairs the two confirmed post-merge dev-CI failures tracked by #3720. This is independent of merged PR #3694 and does not rewrite its history.

• Update the Telegram baseline manifest receipt assertion from 570/95-per-adapter to the generated Q29 parity total of 576/96-per-adapter.
• Defer native shell loss-marker delivery until retained chunks have drained, so callback-boundary loss markers cannot split terminal async output evidence such as TAIL.

Verification

• bun test packages/coding-agent/test/telegram-baseline-manifest.test.ts — 17 passed, 0 failed
• bun test packages/coding-agent/test/tools.test.ts --test-name-pattern 'should bound async and monitor output while preserving full local evidence' — 1 passed, 0 failed\n- bun test packages/coding-agent/test/sdk-adapter-dispositions.test.ts — 576 passed, 0 failed\n- bun packages/coding-agent/scripts/generate-sdk-adapter-parity-manifest.ts --check — passed\n- bun packages/coding-agent/scripts/generate-sdk-operation-inventory.ts --check — passed\n- cargo test -p pi-natives shell::tests — 8 passed, 1 flaky existing failure; isolated rerun of embedded_external_command_runs_in_its_own_session passed\n- git diff --check — passed\n\nIssue: coding-agent dev-CI batch repair: shard-3 manifest parity count and shard-5 async shell output truncation #3720\n\nNo release, tag, or merge performed.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Flush pending loss markers before EOF

When the callback queue overflows and the command is subsequently aborted or times out, dropped_chunks is now reported only after rx closes. The Bash executor stops accepting callbacks as soon as abort/timeout wins (packages/coding-agent/src/exec/bash-executor.ts:382-384), so this final marker is discarded and the returned output silently omits chunks. Flush a pending marker once callback capacity becomes available without consuming the slot needed by the next retained chunk, rather than waiting exclusively for stream termination.

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[Yeachan-Heo]

VERDICT: MERGE_READY

Fresh hostile read-only review of exact head c762b93 against base a8757cb.

Evidence:

• Narrow two-file diff only: crates/pi-natives/src/shell.rs and packages/coding-agent/test/telegram-baseline-manifest.test.ts.
• Shard-3 repair is coherent with the generated adapter-parity manifest: Q29 contributes six rows, changing the aggregate to 576 total / 96 per adapter; generator parity coverage remains unchanged and the baseline receipt assertion now matches it.
• Shard-5 repair defers the shell loss marker until retained callback chunks drain, preventing the marker from splitting terminal async output while preserving truncation observability.
• Exact regression tests passed: 17/17 baseline-manifest tests and 1/1 async shell output regression.
• Adapter-disposition suite passed: 576/576.
• Adapter parity and SDK operation inventory generator checks passed; git diff --check passed.
• PR CI is terminal green: 17 successful checks, 6 skipped, 0 non-success conclusions.
• No unrelated scope drift found.

No merge performed by this review.

—
[repo owner's gaebal-gajae (clawdbot) 🦞]

[Yeachan-Heo]

VERDICT: MERGE_READY

Technical review is complete at exact head c762b93 against base a8757cb. CI is green and no blockers remain. No merge performed.

—
[repo owner's gaebal-gajae (clawdbot) 🦞]