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Levi Neuwirth f1992a65d9
docs(framing): open the GPU probe SIGINT teardown lane 
`ctrl_c_on_launcher_group_does_not_reach_spawned_daemon` fails in gate
stage `sweep-crdt` with "child did not exit within 5s". It is
PRE-EXISTING on main --- 72da24a fails it in a clean worktree with its
own target dir --- so while it reds, no branch can present a green
sixteen-stage gate, main included. §5b is held behind this lane.

Framing revision 1, and it proposes NO FIX, because the mechanism is not
known. What it does instead is fix the shape of the problem so the next
attempt is not another guess:

  - Ground truth, cited: neither binary handles signals. `run_gpu`
    (src/main.rs:324) blocks in `command.status()` with no handler, and
    grepping all of pmacs-gpu/src for signal machinery returns nothing.
    The probe polls at 50ms. Two processes with default SIGINT
    disposition should both die at once --- this deepens the puzzle
    rather than explaining it, and the framing says so.
  - Ruled out by measurement, with the method for each: load, tmpfs
    (tested by experiment, not argument), leaked daemons, inotify,
    --workspace feature unification, and any specific preceding test.
  - The reduction paradox stated as the problem's real shape: 5/5 in
    the full sweep, 0/N in every reduction, including all 37 preceding
    targets plus the suite.
  - One retracted claim kept as a warning, because it was mine: the
    "mechanism located" report described a healthy teardown. The
    sampler behind it caught 394 launchers with a 5s maximum lifetime
    while the failing instance must live 8s or more.

The first step is diagnostic only: an instrument keyed on the FAILING
instance --- launchers outliving ~6s --- capturing /proc/<pid>/status
signal masks, since SigIgn survives fork and exec while handlers do not.

Acceptance criteria are written now so the fix cannot quietly become
"make the test pass": a demonstrated mechanism with a mutation-tested
witness, sweep-crdt green three consecutive times, the reduction paradox
explained or recorded as unexplained, and no deadline raised or test
skipped.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016bqGA6s9tTUFzYpbeW3tai
 		2026-08-18 14:22:32 +02:00
..
active-work.md docs(framing): open the GPU probe SIGINT teardown lane 2026-08-18 14:22:32 +02:00
agent-handoff.md fix(gate): review round 3 --- canonical ancestry, guard witnesses, and a withdrawn claim 2026-08-13 17:07:55 +02:00
auto-indent-framing.md docs: sync auto-indent review metadata 2026-07-10 15:57:38 -04:00
auto-pairing-framing.md test(edit): PR #110 round 3 — pin raw-byte predicate posture and top-level sets guard 2026-07-12 16:20:01 +01:00
autosave-recovery-framing.md fix(persistence): adopt clears the old owner's skip cache; failing sweeps are loud 2026-07-09 12:06:49 -04:00
bottom-panel-framing.md docs: bottom panel framing (revision 4, amended) 2026-07-24 13:00:46 -04:00
bottom-panel-stage2-framing.md docs(bottom-panel): record framing revision 7 2026-07-29 22:37:41 -04:00
bottom-panel-stage3-framing.md review round 1: the crdt suite Stage 3 missed, and two stale explanations 2026-08-04 12:08:28 +02:00
ci-crdt-coverage-framing.md review round 2: assert the CRDT capability defaults, not their round-trip 2026-08-01 11:37:19 -04:00
ci-red-signatures.md fix(gate): review round 3 --- canonical ancestry, guard witnesses, and a withdrawn claim 2026-08-13 17:07:55 +02:00
comment-toggle-framing.md docs: comment-toggle framing (Arc 2) 2026-07-09 22:35:35 -04:00
compile-mode-framing.md fix(compile): make overlay teardown atomic 2026-07-14 10:57:14 +01:00
config-registry-framing.md fix(config): reject wrongly-typed spec fields; make trim-on-save buffer-aware 2026-07-21 18:29:18 -04:00
context-menu-framing.md docs: right-click context menu framing + as-built (Q#CM) 2026-06-27 22:19:00 -04:00
cua-typeover-undo-framing.md CUA type-over is a single undo step (Q#U1) 2026-06-15 20:00:53 -04:00
desktop-save-framing.md fix(persistence): reliable daemon gate, unarm, per-pane after-load 2026-07-08 22:27:24 -04:00
destination-capture-framing.md docs: carry the four-plus-one dedication count into the framing 2026-08-10 14:11:43 +02:00
dired-framing.md docs: record dired Stage 1 (#165) as landed 2026-07-25 17:39:27 -04:00
dired-stage2-framing.md docs: dired Stage 2 framing rev 9 2026-07-28 21:09:11 -04:00
discovery-stage1-command-family-framing.md docs(discovery): finalize Stage 1 framing review 2026-07-31 18:28:35 -04:00
discovery-stage2-framing.md docs: record discovery Stage 2 framing approval 2026-08-10 13:52:32 +02:00
distribution-stage1-framing.md docs(release): a tag before the merge does nothing, silently 2026-08-01 14:46:27 -04:00
editing-conveniences-framing.md fix(edit): PR #111 round 1 — scalar-valid UTF-8, per-word capitalize, trim error reporting 2026-07-12 16:34:18 +01:00
folding-framing.md docs(folding): framing rev 5 — record approval + keybinding decision 2026-07-23 09:59:37 -04:00
folding-stage2-framing.md docs(folding): Stage 2 framing rev 4 — address review round 3 2026-07-23 17:25:55 -04:00
full-grid-resync-framing.md docs: the framing said "awaiting approval" after being approved 2026-08-06 15:22:03 +02:00
gate-protocol-build-framing.md docs: gate framing revision 5 --- pin both emitter pairs, correct print-plan 2026-08-09 18:11:14 +02:00
gate-script-framing.md docs: correct a misattributed review round and an unmeasured claim 2026-08-13 21:10:10 +02:00
generated-buffer-immutability-framing.md merge: integrate main after PR 188 lands 2026-07-29 12:28:25 -04:00
git-integration-framing.md docs: narrow the copy-detection claim to the fixture it was measured on 2026-08-09 22:34:19 +02:00
gpu-attach-robustness-framing.md fix(gpu): F-008 fail-fast must actually tear down the session, not just flag it 2026-07-03 17:14:14 -04:00
gpu-chord-forwarding-framing.md docs: GPU general chord forwarding framing + as-built (Q#GC) 2026-07-03 10:05:55 -04:00
gpu-golden-harness-framing.md docs: GPU headless render harness framing + as-built (Q#GH) 2026-07-03 12:15:19 -04:00
gpu-horizontal-scroll-framing.md feat(gpu): horizontal scroll — QoL Stage 5, closing the long-lines arc (#223) 2026-08-08 10:55:49 +00:00
gpu-initial-target-framing.md test(journey): pin the destination commit, and land the doc updates 2026-07-26 17:25:22 -04:00
gpu-invocation-framing.md Record second GPU invocation review closure 2026-07-23 12:40:03 -04:00
gpu-minibuffer-framing.md docs: GPU minibuffer framing + as-built (Q#MB) 2026-06-30 21:03:32 -04:00
gpu-probe-sigint-framing.md docs(framing): open the GPU probe SIGINT teardown lane 2026-08-18 14:22:32 +02:00
gpu-set-font-framing.md fix(font): close stage-2 GPU behavioral findings 2026-07-18 15:29:25 +01:00
gpu-terminal-input-framing.md docs: measure the CI coverage gap and record the vterm as-framed audit 2026-07-25 17:17:23 -04:00
gui-arc-framing.md docs: Q#S1-7 --- Meta/Super moves to Stage 2, in both records 2026-08-11 23:12:04 +02:00
gui-stage1-input-framing.md docs: Stage 1a --- re-measure the framing's ground truth, and open the lane 2026-08-12 14:29:04 +02:00
gui-zoom-framing.md docs(zoom): the ties both round up, they do not oppose 2026-08-06 17:50:03 +02:00
horizontal-scroll-framing.md feat(view): horizontal scroll, text and decorations together 2026-08-07 22:43:17 +02:00
in-buffer-completion-framing.md docs(completion): phase-2 as-built notes (Q#C6 narrowing, window routing, v15 riders) 2026-07-07 19:57:10 -04:00
in-buffer-search-framing.md docs: consolidate in-buffer search framing (substring + regex) 2026-06-27 15:03:31 -04:00
inline-math-framing.md docs: record the inline-math slice (#158) as landed 2026-07-25 18:16:31 -04:00
inline-math-slice-framing.md fix(math): review round 3 — mapping bug, whitespace defect, real MATH gaps 2026-07-24 20:19:40 -04:00
journey-stage1a-framing.md feat(compile): make building discoverable — journey step 9 2026-07-30 21:13:12 -04:00
journey-stage1b1-compile-defaults-framing.md docs(journey): framing revision 2 — close review round 1 2026-07-30 18:40:34 -04:00
journey-stage1b2-lsp-guidance-framing.md docs(journey): framing revision 4 — close review round 3 2026-07-30 21:52:15 -04:00
journey-stage1b3-welcome-framing.md docs(journey): framing revision 4 — close review round 3 2026-07-31 14:55:57 -04:00
json-yaml-framing.md docs: absorption pass at c5f7501 — #209 landed, and six weeks of drift 2026-08-01 13:56:23 -04:00
keybindings.md feat(git): Stage 1 --- *git-status* and *git-diff*, no wire change 2026-08-09 14:43:21 +02:00
kill-ring-framing.md docs: kill-ring framing (Arc 2), rev 3 2026-07-09 20:10:39 -04:00
latex-grammar-math-substrate-framing.md docs(inline-math): commit the parent inline-math framing 2026-07-23 14:06:26 -04:00
lean4-mode-framing.md fix(lean4): count fan-outs where a claim cannot skip the count 2026-07-26 17:15:24 -04:00
locals-query-processing-framing.md docs: record landed locals-query processing 2026-07-22 13:30:07 -04:00
long-lines-framing.md test: the report itself, at a real PTY — and §1.1 was wrong 2026-08-07 19:37:46 +02:00
lsp-file-watch-d3-framing.md feat(lsp): D3 --- the file watcher stops sleeping and walks once per scan (#233) 2026-08-11 14:59:28 +02:00
lsp-file-watcher-framing.md fix(lsp): read the glob form from the pattern, and stop a cancelled scan emitting 2026-08-11 09:00:15 +02:00
lsp-language-coverage-framing.md docs: LaTeX framing revision 3 --- step zero corrected the premise 2026-08-10 10:48:49 +02:00
lsp-panels-framing.md docs(panels): correct as-built accuracy — position encoding landed, refresh drifted refs 2026-07-08 14:29:23 -04:00
lua-bindings-split-framing.md refactor(lua): re-export install_* wiring fns to preserve the public API 2026-07-06 11:57:56 -04:00
macos-ci-signal-integrity-framing.md docs: record Stage 2 in the framing, and fence R3 off from R2's retirement 2026-08-05 13:51:40 +02:00
mcp-for-package-authors.md M9 ship gate 2026-05-09 15:04:23 -04:00
mode-system-wiring-framing.md fix: harden mode acceptance startup 2026-07-22 08:18:18 -04:00
modeline-detection-framing.md docs: record landed modeline detection 2026-07-22 11:30:45 -04:00
multi-language-injections-framing.md fix(injections): PR #122 round 2 — sibling precedence, observable cap, docs 2026-07-15 12:07:21 +01:00
package-author-guide.md feat(statusline): add composable modeline segments at protocol v18 2026-07-21 12:01:25 -04:00
package-manager-hardening-framing.md fix(packages): F-005 must also guard the frozen/lockfile plan path 2026-07-03 19:05:08 -04:00
packages.md Fix CI and Documentation issues 2026-05-04 10:19:19 -04:00
persistence-framing.md docs: persistence framing (Arc 3) 2026-07-08 17:33:25 -04:00
pmacs-gpu-design.md test(font): wire acceptance suite + protocol/design docs (items 2-8, 15) 2026-07-18 11:46:44 +01:00
pmacs-gpu-diagnostic-parity-framing.md framing: pmacs-gpu diagnostic parity — quad squiggles, minimap marks 2026-06-12 10:00:06 -04:00
pmacs-gpu-mouse-deferred-framing.md framing: mouse deferred set — triple-click, Shift-click, minimap jump, edge auto-scroll 2026-06-12 12:12:18 -04:00
pmacs-gpu-mouse-framing.md session M-1 — Pointer wire + daemon byte-space mouse semantics 2026-06-10 13:10:17 -04:00
pmacs-gpu-perline-reshape-framing.md session R — per-line incremental reshape (typing latency floor) 2026-06-10 15:01:51 -04:00
pmacs-gpu-phase-a-audit.md Close pmacs-gpu phase A audit 2026-05-28 12:49:23 -04:00
pmacs-gpu-quad-backgrounds-audit.md docs: close quad-backgrounds arc — audit + framing status 2026-05-29 10:49:21 -04:00
pmacs-gpu-quad-backgrounds-framing.md docs: close quad-backgrounds arc — audit + framing status 2026-05-29 10:49:21 -04:00
pmacs-gpu-scroll-framing.md docs: viewport-scoped rendering + scroll framing (perf) 2026-05-30 10:28:59 -04:00
pmacs-gpu-status-band-framing.md framing: GPU status band — local freshness + v8 StatusFacts 2026-06-12 13:45:12 -04:00
pmacs-gpu-wavy-squiggles-framing.md pmacs-gpu: wavy diagnostic squiggles (Q#W1) 2026-06-15 18:41:56 -04:00
process-signal-diagnostic-completeness-framing.md docs(process): stop overclaiming the pre-kill sample; drop a dead comment 2026-07-30 14:41:50 -04:00
process-signal-tolerance-framing.md docs: frame the PTY terminate diagnostic (revision 4) 2026-07-25 21:12:51 -04:00
process-teardown-stdin-deadlock-framing.md fix(process): arm the setsid dependency, correct the orphan account 2026-07-29 22:54:06 -04:00
project.md Fix PTY final-output drain race 2026-05-04 09:44:30 -04:00
query-replace-framing.md fix(query-replace): pin the session to its origin buffer (wrong-buffer guard) 2026-07-08 17:07:08 -04:00
r8-fixture-boundary-framing.md fix(tests): bound the LSP fixture's project detection — retires R8 (#226) 2026-08-09 08:54:06 +00:00
reap-ledger-silent-failures-framing.md fix(process): scope the escalation claim to ticks, and pin the boundary 2026-07-30 20:41:03 -04:00
repository-audit-2026-07-03.md docs(features): document the Lua feature matrix; drop unreachable compile_error idea (F-002) 2026-07-03 19:54:35 -04:00
resource-op-delete-guard-framing.md fix(lsp): close review gaps in workspace edit reporting 2026-07-29 12:29:50 -04:00
roadmap-2026-07.md docs: record Vterm Stage 3 landing 2026-07-22 19:54:14 -04:00
semantic-frontend-protocol.md feat(statusline): add composable modeline segments at protocol v18 2026-07-21 12:01:25 -04:00
side-quest-backlog.md docs: Q#S1-7 --- Meta/Super moves to Stage 2, in both records 2026-08-11 23:12:04 +02:00
statusline-segments-framing.md fix(statusline): harden narrow-band review edges 2026-07-21 12:43:22 -04:00
tab-width-parity-framing.md docs: link tab-width parity PR 2026-07-22 15:06:10 -04:00
terminal-config-and-copy-mode-framing.md docs: correct the non-adopter attribution and two stale anchors 2026-07-26 16:45:12 -04:00
test-ambient-config-isolation-framing.md docs(framing): record the deliberate departure from the §7 branch plan 2026-07-31 19:46:33 -04:00
theme-faces-framing.md perf(themes): PR #120 round 5 -- O(1) frozen counts via store totals 2026-07-15 11:19:03 +01:00
tree-primitive-framing.md fix(listview): ids must also be unique and not NaN 2026-08-05 23:06:25 +02:00
ux-arc-framing.md docs(ux): as-built for sub-arc 3 + arc close (relative/hybrid, protocol v14) 2026-07-07 10:03:32 -04:00
vterm-framing.md Merge main, and fold #173's a37 findings into the CI-coverage lane 2026-07-26 09:29:42 -04:00
web-grammars-html-css-framing.md docs+test(web): name and pin the @attribute retro-paint (review round 3) 2026-07-23 16:11:47 -04:00
worker-identity-framing.md fix(workers): a safe display-text boundary for purpose and handler names 2026-08-10 14:51:54 +02:00