real dev verification: github pr 28539 / git.cafe pr 28539
main: 37d7615a91, separate /home/user/main worktree
pr: 6791f6b981f86b58bdf9eb8af914d44cccd8c4b1
client: repository Playwright + /usr/bin/google-chrome on Linux
provider: Codex gpt-6.1-sol, real proxy-backed command turns
project: /home/user/terminal-verification, created via Add project > Local folder
no mocks, fixtures, replay provider, source edits or commits
main stopped before pr started; isolated copied app-created project/thread state

scenario: command emits 40 batches of 200 numbered lines every 3 seconds. Open running command group, open output row, collapse/reopen output, reload page, reopen output while running. Output advances to BATCH-40 and RESUME-DONE. Trim notice appears above 64KiB. Completed output reopens with final marker intact.

runtime observer outside repository: wraps split/indexOf, records only stacks containing terminalOutputResumeText. pid 18729 is main server; pid 26377 is pr server. indexOf call counts are cumulative, increments of 63 per resume on long tails. Instrumentation measures operations, not latency or total pipeline memory.
{"pid":18729,"operation":"split","chars":24,"lines":1}
{"pid":18729,"operation":"split","chars":10930,"lines":1006}
{"pid":18729,"operation":"split","chars":22971,"lines":2011}
{"pid":18729,"operation":"split","chars":65530,"lines":5469}
{"pid":26377,"operation":"indexOf","calls":63,"chars":8722}
{"pid":26377,"operation":"indexOf","calls":126,"chars":22971}
{"pid":26377,"operation":"indexOf","calls":189,"chars":49470}
{"pid":26377,"operation":"indexOf","calls":252,"chars":65529}
{"pid":26377,"operation":"indexOf","calls":315,"chars":65530}
{"pid":26377,"operation":"indexOf","calls":378,"chars":1314}
{"pid":26377,"operation":"indexOf","calls":441,"chars":1314}
{"pid":26377,"operation":"indexOf","calls":504,"chars":1316}

focused Blacksmith command: vp test run packages/shared/src/terminalOutput.test.ts apps/server/src/orchestration-v2/CommandOutputHub.test.ts
24 tests passed (16 shared + 8 hub).

Blacksmith changed-files command: git fetch --depth=2 https://github.com/hieu-lee/t3code.git hieu-lee/constant-space-terminal-resume && vp run check:changed HEAD^
check:changed summary
  pass  format  0.2s
  pass  lint  0.3s
  pass  knip 1/2  5.5s
  pass  knip 2/2  11.5s
  pass  typecheck (33 packages)  22.6s
  pass  test (2 files)  9.5s
  CI also runs: full test suites, build, release smoke
  unused patch check skipped: no dependency files changed
  pass not cached: files changed during the run


ansi scenario: 100 lines, green pen, saved cursor, carriage-return/erase updates every 3 seconds, then a partial ESC[ paused 8 seconds before 31m completes. Reopened output between updates and during partial escape. Full-size recording frame confirms green STATUS tick 10, red PARTIAL-ESCAPE-RED, and plain ANSI-DONE.
pending escape before reopen NSI-LINE-78
ANSI-LINE-79
ANSI-LINE-80
ANSI-LINE-81
ANSI-LINE-82
ANSI-LINE-83
ANSI-LINE-84
ANSI-LINE-85
ANSI-LINE-86
ANSI-LINE-87
ANSI-LINE-88
ANSI-LINE-89
ANSI-LINE-90
ANSI-LINE-91
ANSI-LINE-92
ANSI-LINE-93
ANSI-LINE-94
ANSI-LINE-95
ANSI-LINE-96
ANSI-LINE-97
ANSI-LINE-98
ANSI-LINE-99
STATUS tick 10

after reopen pending NSI-LINE-78
ANSI-LINE-79
ANSI-LINE-80
ANSI-LINE-81
ANSI-LINE-82
ANSI-LINE-83
ANSI-LINE-84
ANSI-LINE-85
ANSI-LINE-86
ANSI-LINE-87
ANSI-LINE-88
ANSI-LINE-89
ANSI-LINE-90
ANSI-LINE-91
ANSI-LINE-92
ANSI-LINE-93
ANSI-LINE-94
ANSI-LINE-95
ANSI-LINE-96
ANSI-LINE-97
ANSI-LINE-98
ANSI-LINE-99
STATUS tick 10

completed 
ANSI-LINE-63
ANSI-LINE-64
ANSI-LINE-65
ANSI-LINE-66
ANSI-LINE-67
ANSI-LINE-68
ANSI-LINE-69
ANSI-LINE-70
ANSI-LINE-71
ANSI-LINE-72
ANSI-LINE-73
ANSI-LINE-74
ANSI-LINE-75
ANSI-LINE-76
ANSI-LINE-77
ANSI-LINE-78
ANSI-LINE-79
ANSI-LINE-80
ANSI-LINE-81
ANSI-LINE-82
ANSI-LINE-83
ANSI-LINE-84
ANSI-LINE-85
ANSI-LINE-86
ANSI-LINE-87
ANSI-LINE-88
ANSI-LINE-89
ANSI-LINE-90
ANSI-LINE-91
ANSI-LINE-92
ANSI-LINE-93
ANSI-LINE-94
ANSI-LINE-95
ANSI-LINE-96
ANSI-LINE-97
ANSI-LINE-98
ANSI-LINE-99
STATUS tick 10
PARTIAL-ESCAPE-RED
ANSI-DONE





Ask anything. @ files, $ skills, / commands
6.1 Sol
Low
box-node-9ac375e9c8da02d9
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master
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not verified: native desktop/mobile shells, macOS/Windows, remote relay/tunnel, other providers. No user latency or total memory benchmark claimed.