The file C:\Users\decid\Documents\projects\spt-core\.config\nextest.toml has been updated successfully. (file state is current in your context — no need to Read it back)

# cargo-nextest configuration.
#
# CI runs the workspace test suite under `cargo nextest run` in TWO PHASES (see the
# `test` job in .github/workflows/ci.yml):
#   Phase A  `-E 'not ( <HEAVY> )'`  — the light pool, full parallelism, fast.
#   Phase B  `-E '<HEAVY>'`          — the heavy real-broker/PTY/daemon-tree class,
#                                      run AFTER Phase A so the box is QUIET, and
#                                      serialized by the test-group below.
# <HEAVY> is the SAME filter string in both CI phases AND in the test-group override
# at the bottom of this file — keep all three in sync (a clean partition: A is the
# exact negation of B, so nothing is dropped or double-run).
# See docs/RELEASE-RUNBOOK + ci-kitsubito.

[profile.default]
# A hung test (e.g. a blocking PTY/socket read that never completes) must FAIL FAST,
# never wedge the CI job up to its wall-clock timeout. Warn once a test exceeds 60s,
# then SIGKILL + fail it after 4 such periods (4 minutes). No legitimate test in this
# workspace runs that long; this is purely the no-infinite-wedge backstop.
slow-timeout = { period = "60s", terminate-after = 4 }

# Concurrency cap for the heavy real-broker / PTY / daemon-tree integration tests.
#
# WHY: nextest fans a phase into ONE parallel pool sized to the runner's core count.
# The "heavy" tests each spin a REAL broker, forkpty a REAL PTY child, and/or spawn a
# REAL `spt daemon`/brain process tree. Two failure modes were observed on the shared
# self-hosted runners:
#   1. heavy-vs-heavy contention: ~16 real brokers launching at once contend for the
#      scheduler / PTY allocation / socket setup, producing wait-deadline / PTY-spawn
#      / child-reap TIMING flakes whose victim rotates run to run (spawn_env on Linux
#      forkpty, g4 on Windows, controller_writer, attach_survives, …).
#   2. heavy-starved-by-light: even with the heavy class serialized, the ~1200 LIGHT
#      tests still ran at full parallelism in the SAME pool and saturated the box, so
#      a heavy test's helper thread lost the CPU race (a_journaled_input_wedge
#      subscribed=false; job_escape_e2e tree-reap timeout). The two-phase split fixes
#      THIS: when Phase B runs, Phase A is done and the box is idle.
#
# The test-group then serializes the heavy class WITHIN Phase B so failure mode 1
# can't bite either, even on the idle box. max-threads = 1 is contention-free and
# deterministic (a cap > 1 still lets two real brokers race = lucky, not reliable).
# Group membership == the <HEAVY> phase filter. (Driver-pacing in inject_control_wedge
# additionally removes that gate's self-inflicted CPU storm — a correctness nicety on
# top of the structural split.)
[test-groups]
heavy-broker-pty = { max-threads = 1 }

# <HEAVY> — the heavy real-broker/PTY/daemon-tree class, by package+binary. Swept by
# concrete evidence: a binary is HEAVY iff some test in it spawns a real PTY child
# (a `SpawnReq`/`spawn_program` with a `cat`/`findstr`/`yes`/`sleep`/`ping`/FLOOD
# program) OR a real `spt daemon`/brain process tree (`supervise_brain`, CARGO_BIN_EXE
# daemon run). Pure in-process loopback-QUIC wire tests (net_broker with NO PTY child:
# netbroker, netstream, mesh, sync, replicate, presence, …) are LIGHT and stay in
# Phase A. All spt-term test binaries forkpty a real PTY child, so the whole package
# is heavy. Keep this string IDENTICAL to both -E filters in ci.yml.
[[profile.default.overrides]]
filter = '(package(spt-daemon) & kind(test) & binary(/^(attach|brain_swap|broker|budget|daemon_e2e|daemon_lifecycle_real_brain|digest|dispatch|driven_by_selfheal|handoff|idempotent|inject_control_wedge|input_ack_deadlock|resume|shellchan|two_origin_spanning|twohost)$/)) | (package(spt) & kind(test) & binary(/^(attach_wedge_e2e|bind_cwd_project_e2e|brain_respawn_rename|brain_restart_psyche_dup_e2e|brain_split|brain_survive|dummy_harness_e2e|job_escape_e2e|livehost_bootgate_e2e|livehost_bootrace_e2e|livehost_nonresident_e2e|livehost_psyche_fail_e2e|n1_pairing|oneliner_e2e|resume_template_e2e|unhost_psyche_reap_e2e)$/)) | (package(spt-term) & kind(test))'
test-group = 'heavy-broker-pty'


The file C:\Users\decid\Documents\projects\spt-core\.github\workflows\ci.yml has been updated. All occurrences were successfully replaced. (file state is current in your context — no need to Read it back)

# exact negation of Phase B, so the two phases partition the suite with nothing

- name: Test — Phase A (light pool, full parallel)

-        run: cargo nextest run --workspace -E 'not ( (package(spt-daemon) & kind(test) & binary(/^(attach|brain_swap|broker|budget|daemon_e2e|daemon_lifecycle_real_brain|digest|dispatch|driven_by_selfheal|handoff|idempotent|inject_control_wedge|input_ack_deadlock|resume|shellchan|two_origin_spanning|twohost)$/)) | (package(spt) & kind(test) & binary(/^(attach_wedge_e2e|bind_cwd_project_e2e|brain_respawn_rename|brain_restart_psyche_dup_e2e|brain_split|brain_survive|dummy_harness_e2e|job_escape_e2e|livehost_bootgate_e2e|livehost_bootrace_e2e|livehost_nonresident_e2e|livehost_psyche_fail_e2e|n1_pairing|oneliner_e2e|resume_template_e2e|unhost_psyche_reap_e2e)$/)) | (package(spt-term) & kind(test)) )'

+        run: cargo nextest run --workspace -E 'not ( (package(spt-daemon) & kind(test) & binary(/^(attach|brain_swap|broker|budget|daemon_e2e|daemon_lifecycle_real_brain|digest|dispatch|driven_by_selfheal|handoff|idempotent|inject_control_wedge|input_ack_deadlock|resume|shellchan|two_origin_spanning|twohost)$/)) | (package(spt) & kind(test) & binary(/^(attach_wedge_e2e|bind_cwd_project_e2e|brain_respawn_rename|brain_restart_psyche_dup_e2e|brain_split|brain_survive|dummy_harness_e2e|gateway_owner_shell_e2e|job_escape_e2e|livehost_bootgate_e2e|livehost_bootrace_e2e|livehost_nonresident_e2e|livehost_psyche_fail_e2e|n1_pairing|oneliner_e2e|resume_template_e2e|unhost_psyche_reap_e2e)$/)) | (package(spt-term) & kind(test)) )'

- name: Test — Phase B (heavy class, serialized, on a now-quiet box)

-        run: cargo nextest run --workspace -E '(package(spt-daemon) & kind(test) & binary(/^(attach|brain_swap|broker|budget|daemon_e2e|daemon_lifecycle_real_brain|digest|dispatch|driven_by_selfheal|handoff|idempotent|inject_control_wedge|input_ack_deadlock|resume|shellchan|two_origin_spanning|twohost)$/)) | (package(spt) & kind(test) & binary(/^(attach_wedge_e2e|bind_cwd_project_e2e|brain_respawn_rename|brain_restart_psyche_dup_e2e|brain_split|brain_survive|dummy_harness_e2e|job_escape_e2e|livehost_bootgate_e2e|livehost_bootrace_e2e|livehost_nonresident_e2e|livehost_psyche_fail_e2e|n1_pairing|oneliner_e2e|resume_template_e2e|unhost_psyche_reap_e2e)$/)) | (package(spt-term) & kind(test))'

+        run: cargo nextest run --workspace -E '(package(spt-daemon) & kind(test) & binary(/^(attach|brain_swap|broker|budget|daemon_e2e|daemon_lifecycle_real_brain|digest|dispatch|driven_by_selfheal|handoff|idempotent|inject_control_wedge|input_ack_deadlock|resume|shellchan|two_origin_spanning|twohost)$/)) | (package(spt) & kind(test) & binary(/^(attach_wedge_e2e|bind_cwd_project_e2e|brain_respawn_rename|brain_restart_psyche_dup_e2e|brain_split|brain_survive|dummy_harness_e2e|gateway_owner_shell_e2e|job_escape_e2e|livehost_bootgate_e2e|livehost_bootrace_e2e|livehost_nonresident_e2e|livehost_psyche_fail_e2e|n1_pairing|oneliner_e2e|resume_template_e2e|unhost_psyche_reap_e2e)$/)) | (package(spt-term) & kind(test))'

# nextest does not run doctests — keep them on `cargo test --doc`.


Verifying 3-site byte-identity + re-running partition with the new string.


Bash

cd "C:\Users\decid\Documents\projects\spt-core"
echo "=== 3-SITE spt-binary-group identity (must be 3 identical) ==="
grep -oE 'attach_wedge_e2e\|bind_cwd_project_e2e[^)]*unhost_psyche_reap_e2e' .config/nextest.toml .github/workflows/ci.yml | sort | uniq -c
echo "=== gateway present in all 3? ==="
grep -c 'gateway_owner_shell_e2e' .config/nextest.toml; grep -c 'gateway_owner_shell_e2e' .github/workflows/ci.yml

Check 3-site filter byte-identity


=== 3-SITE spt-binary-group identity (must be 3 identical) ===
      1 .config/nextest.toml:attach_wedge_e2e|bind_cwd_project_e2e|brain_respawn_rename|brain_restart_psyche_dup_e2e|brain_split|brain_survive|dummy_harness_e2e|gateway_owner_shell_e2e|job_escape_e2e|livehost_bootgate_e2e|livehost_bootrace_e2e|livehost_nonresident_e2e|livehost_psyche_fail_e2e|n1_pairing|oneliner_e2e|resume_template_e2e|unhost_psyche_reap_e2e
      2 .github/workflows/ci.yml:attach_wedge_e2e|bind_cwd_project_e2e|brain_respawn_rename|brain_restart_psyche_dup_e2e|brain_split|brain_survive|dummy_harness_e2e|gateway_owner_shell_e2e|job_escape_e2e|livehost_bootgate_e2e|livehost_bootrace_e2e|livehost_nonresident_e2e|livehost_psyche_fail_e2e|n1_pairing|oneliner_e2e|resume_template_e2e|unhost_psyche_reap_e2e
=== gateway present in all 3? ===
1
2


3-site string byte-identical (uniq collapses to one content line; nextest 1 + ci.yml 2 = 3 sites, gateway in all). Re-running partition with the new membership.


cd "C:\Users\decid\Documents\projects\spt-core" && HEAVY='(package(spt-daemon) & kind(test) & binary(/^(attach|brain_swap|broker|budget|daemon_e2e|daemon_lifecycle_real_brain|digest|dispatch|driven_by_selfheal|handoff|idempotent|inject_control_wedge|input_ack_deadlock|resume|shellchan|two_origin_spanning|twohost)$/)) | (package(spt) & kind(test) & binary(/^(attach_wedge_e2e|bind_cwd_project_e2e|brain_respawn_rename|brain_restart_psyche_dup_e2e|brain_split|brain_survive|dummy_harness_e2e|gateway_owner_shell_e2e|job_escape_e2e|livehost_bootgate_e2e|livehost_bootrace_e2e|livehost_nonresident_e2e|livehost_psyche_fail_e2e|n1_pairing|oneliner_e2e|resume_template_e2e|unhost_psyche_reap_e2e)$/)) | (package(spt-term) & kind(test))'
T=$(cargo nextest list --workspace 2>/dev/null | grep -c '::')
H=$(cargo nextest list --workspace -E "$HEAVY" 2>/dev/null | grep -c '::')
L=$(cargo nextest list --workspace -E "not ( $HEAVY )" 2>/dev/null | grep -c '::')
echo "TOTAL=$T HEAVY=$H LIGHT=$L H+L=$((H+L)) PARTITION=$([ $((H+L)) -eq $T ] && echo OK || echo FAIL)"
echo "gateway test count = $(cargo nextest list --workspace -E 'package(spt) & binary(gateway_owner_shell_e2e)' 2>/dev/null | grep -c '::')"

Re-verify partition with gateway promoted


Command running in background with ID: b4rmawdkl. Output is being written to: C:\Users\decid\AppData\Local\Temp\claude\C--Users-decid-Documents-projects-spt-core\97787e5e-64b2-4afd-b3fe-becaa2ea8030\tasks\b4rmawdkl.output. You will be notified when it completes. To check interim output, use Read on that file path.


<system-reminder>Warning: the file exists but is shorter than the provided offset (1). The file has 1 lines.</system-reminder>


<task-notification>
<task-id>b4rmawdkl</task-id>
<tool-use-id>toolu_01VVG71A4w5iwDdXJkAU41jC</tool-use-id>
<output-file>C:\Users\decid\AppData\Local\Temp\claude\C--Users-decid-Documents-projects-spt-core\97787e5e-64b2-4afd-b3fe-becaa2ea8030\tasks\b4rmawdkl.output</output-file>
<status>completed</status>
<summary>Background command "Re-verify partition with gateway promoted" completed (exit code 0)</summary>
</task-notification>


Awaiting partition re-check (cached, ~quick).


1	TOTAL=1258 HEAVY=91 LIGHT=1167 H+L=1258 PARTITION=OK
2	gateway test count = 1
3

TOTAL=1258 HEAVY=91 LIGHT=1167 H+L=1258 PARTITION=OK
gateway test count = 1


Prompt:
<task-notification>
<task-id>b4rmawdkl</task-id>
<tool-use-id>toolu_01VVG71A4w5iwDdXJkAU41jC</tool-use-id>
<output-file>C:\Users\decid\AppData\Local\Temp\claude\C--Users-decid-Documents-projects-spt-core\97787e5e-64b2-4afd-b3fe-becaa2ea8030\tasks\b4rmawdkl.output</output-file>
<status>completed</status>
<summary>Background command "Re-verify partition with gateway promoted" completed (exit code 0)</summary>
</task-notification>


Partition exact: 1258 = 91 + 1167 (gateway = 1 test, N=1). 3-site byte-identical. Only config strings changed (no Rust) — committing + pushing.


cd "C:\Users\decid\Documents\projects\spt-core" && git add .config/nextest.toml .github/workflows/ci.yml && git commit -q -F - <<'EOF'
ci(nextest): promote gateway_owner_shell_e2e into the HEAVY phase (doyle gate ruling B)

It spawns a real `spt shell` child — a real-process spawn that can contend / timing-
flake — so over-inclusion is the safe error (operator's stop-the-whack-a-mole). Added
to the package(spt) binary group in all THREE sites kept BYTE-IDENTICAL: the
.config/nextest.toml test-group override and both ci.yml `-E` phase filters (drift =
a test silently in neither phase). Ruling A (raise the group cap 1->2-4) declined —
max-threads=1 stays; revisit only after many proven-green runs.

Partition re-verified: TOTAL 1258 = HEAVY 91 + LIGHT 1167 (gateway_owner_shell_e2e =
1 test moved A->B), zero overlap.

Co-authored by: todlando
EOF
git push origin v0.13.0-p1b-ack-deadlock 2>&1 | tail -3

Commit + push gateway promotion


warning: in the working copy of '.config/nextest.toml', LF will be replaced by CRLF the next time Git touches it
To https://github.com/SaberMage/spt-core.git
   fe7957f..bfe760e  v0.13.0-p1b-ack-deadlock -> v0.13.0-p1b-ack-deadlock


Pushed bfe760e. Notifying doyle.


$OWL send doyle <<'EOF'
GATEWAY PROMOTION PUSHED -> bfe760e on v0.13.0-p1b-ack-deadlock. Both rulings applied.

B (promote): gateway_owner_shell_e2e added to the package(spt) binary group in ALL 3 sites, inserted alphabetically (dummy_harness_e2e|gateway_owner_shell_e2e|job_escape_e2e). 3-SITE BYTE-IDENTITY confirmed: grep -oE of the full spt-binary group across .config/nextest.toml + both ci.yml -E filters -> uniq collapses to ONE identical content line (nextest 1 + ci.yml 2 = 3 sites). gateway present count: nextest.toml 1, ci.yml 2.

A (cap): left at max-threads=1 per your decline. Revisit later after proven-green.

PARTITION RE-VERIFIED: TOTAL=1258, HEAVY=91, LIGHT=1167, H+L=1258, PARTITION=OK. gateway_owner_shell_e2e = 1 test, moved A->B (90->91 / 1168->1167). Clean.

No Rust changed this commit (filter strings only) so the fe7957f local verification (clippy/traceable/wedge+job_escape green) still holds. Over to you for the final fold + x2-3 CI -> green-both-runners x3 -> deployah cuts v0.13.0. Reachable. -todlando
EOF

Report gateway promotion to doyle


➜ SENT:doyle


Gateway promoted (bfe760e), 3-site byte-identity + partition (1258=91+1167) re-verified, reported to doyle. Cap stays 1 per his ruling. Awaiting his final fold + multi-run CI → green-both-runners ×3 → v0.13.0 cut.


ScheduleWakeup

Gateway promotion pushed; awaiting doyle's final fold + multi-run CI verdict via the armed Monitor — fallback heartbeat only.

Prompt: <<autonomous-loop-dynamic>>


Next wakeup scheduled for 22:11:00 (in 1501s). Nothing more to do this turn — the harness re-invokes you when the wakeup fires or a task-notification arrives.


Idle — two-phase split + gateway promotion delivered (bfe760e), all gates green, awaiting doyle's final multi-run CI verdict.


<task-notification>
<task-id>b4cwwiglf</task-id>
Monitor event: "« spt event »"
<event><EVENT-PART seq="1/2" id="c7baaedc" type="msg" from="doyle">bfe760e GATE PASS + FOLDED onto v0.13.0-delivery-control (clean FF via fe7957f). My independent re-verify: 3-site byte-identical=True, gateway in all 3=True, alpha-order correct, 39 binaries/91 tests, partition guaranteed by construction (A=not(X), B=X, X identical). Both rulings confirmed applied.

Reliability ru</EVENT-PART>
<EVENT-PART seq="2/2" id="c7baaedc">n #1 of the two-phase split = 27893858272, running now. Watching; x2-3 per the flaky-cluster gate. If Phase B goes green-both-runners x3 -&gt; deployah cuts v0.13.0. Any Phase-B flake now = REAL signal on a quiet box, not load (your words). Will report verdict. Excellent structural work. -doyle</EVENT-PART></event>
</task-notification>


<owl_reachability_notice>
You have an active owl perch. When spawning subagents or doing work, use run_in_background: true so you stay reachable for incoming messages.
</owl_reachability_notice>


CAVEMAN MODE ACTIVE (full). Drop articles/filler/pleasantries/hedging. Fragments OK. Code/commits/security: write normal.


doyle: bfe760e GATE PASS + FOLDED. Independent re-verify all-green (3-site byte-identical, gateway in 3, 39 binaries/91 tests, partition by construction). Reliability run #1 (27893858272) of the two-phase split running, ×2-3 to go. Green-both-runners ×3 → v0.13.0 cut. Any Phase-B flake now = real signal on a quiet box.

Nothing on me — doyle reports the verdict. Idle, fallback set.


<task-notification>
<task-id>b4cwwiglf</task-id>
Monitor event: "« spt event »"
<event><EVENT-PART seq="1/7" id="2993fd90" type="msg" from="doyle">RUN #1 two-phase (27893858272): RED both, BUT the split worked — both failures are in Phase B on the (Linux-)quiet box = REAL signal not load, exactly as designed. Three things, #1 is why we keep peeling one failure per round:

1. CONVERGENCE FIX (do first): add --no-fail-fast to BOTH phase nextest invocations (</EVENT-PART>
<EVENT-PART seq="2/7" id="2993fd90">Phase B especially). nextest CANCELLED Phase B on the first failure — Linux ran only 43/90, Windows 72/91, and a_journaled_input_wedge (our ORIGINAL victim) NEVER RAN. We can't see if the topology+pacing actually fixed it. With --no-fail-fast, ONE run shows the COMPLETE heavy-suite failure set -&gt; we batch-fix instead of round-after-round.</EVENT-PART>
<EVENT-PART seq="3/7" id="2993fd90"> (Keep the slow-timeout backstop; --no-fail-fast only stops the early-cancel.)

2. REAL TEST BUG — spawn_env_reaches_child @ crates/spt-daemon/tests/broker.rs:385: asserts `injected SpawnReq.env must reach the child` but got &quot;&quot; — 18ms FAST-fail on a QUIET serial box = a single-shot read of the child's output BEFORE the env </EVENT-PART>
<EVENT-PART seq="4/7" id="2993fd90">echo arrived (no poll). This was a rotating contention victim before; it's a genuine read-race independent of the wedge work. Fix = bounded poll-until-the-env-value-appears read (the wait_for_stream pattern already in this file), not a one-shot read.

3. INVESTIGATE — p0_paste_wedge on WINDOWS @ inject_control_wedge.rs:1967: subscribed</EVENT-PART>
<EVENT-PART seq="5/7" id="2993fd90">=false, pumped=6843. It PASSED on Windows pre-pacing (f4b97e7 run was all-green Windows) and FAILS post-pacing. Suspect the 5ms pacing regressed the Windows ConPTY path — the CPU-storm you paced was a UNIX/forkpty problem; on Windows ConPTY ABSORBS the paste so there was no storm to pace. Consider making the pacing Unix-only (cfg(unix)) and </EVENT-PART>
<EVENT-PART seq="6/7" id="2993fd90">re-check Windows p0. You're on hfenduleam — repro p0 there directly. NOTE: hfenduleam is shared with the live agents (us), so Windows Phase B is NOT truly quiet — if p0 is load not pacing, that's the operator's dedicated-box call (I'm surfacing it).

Plan: land #1+#2+#3, push, I fold + re-run ONCE with --no-fail-fast to get the full </EVENT-PART>
<EVENT-PART seq="7/7" id="2993fd90">picture, then we batch-close. Reachable. -doyle</EVENT-PART></event>
</task-notification>


doyle RUN #1 two-phase RED both — but the split WORKED: both failures are Phase B on a quiet box = REAL signal. Three tasks (he folds once with --no-fail-fast after to batch-close):

1. **--no-fail-fast** on both phase invocations (Phase B cancelled early → a_journaled_input_wedge never ran, incomplete picture).
2. **Real bug** spawn_env_reaches_child (broker.rs:385) — one-shot read races the env echo (got ""); fix = bounded poll (wait_for_stream pattern).
3. **Investigate** p0_paste_wedge WINDOWS regression — passed pre-pacing, fails post-pacing; my 5ms sleep is the suspect (ConPTY absorbs paste → no storm to pace on Windows). Likely fix: cfg(unix)-gate the pacing.

Starting all three. Repro p0 on Windows in background while I read broker.rs + edit ci.yml.


Bash

cd "C:\Users\decid\Documents\projects\spt-core" && for i in 1 2 3; do echo "=== p0 run $i ==="; cargo nextest run -p spt-daemon --test inject_control_wedge -E 'test(p0_paste_wedge_parked_write_does_not_starve_attach_or_wedge_broker)' 2>&1 | grep -iE "PASS|FAIL|subscribed|PASTE-WEDGE GATE"; done

Repro p0 on Windows 3x with current pacing


Command running in background with ID: by746ciks. Output is being written to: C:\Users\decid\AppData\Local\Temp\claude\C--Users-decid-Documents-projects-spt-core\97787e5e-64b2-4afd-b3fe-becaa2ea8030\tasks\by746ciks.output. You will be notified when it completes. To check interim output, use Read on that file path.


355	            endpoint: "wall-b".to_string(),
356	            cwd: None,
357	            env,
358	            translation_binary: None,
359	        })
360	        .unwrap(),
361	    );
362
363	    let mut out = Vec::<u8>::new();
364	    let mut got = false;
365	    for _ in 0..400 {
366	        if String::from_utf8_lossy(&out).contains("ENVCHECK=wall-b") {
367	            got = true;
368	            break;
369	        }
370	        match read_frame(&mut conn) {
371	            Ok(f) if f.kind == KIND_OUTPUT => accumulate_output(&f, &mut out),
372	            Ok(f) if f.kind == KIND_EXIT => {
373	                // Drain any final output already buffered before deciding.
374	                if String::from_utf8_lossy(&out).contains("ENVCHECK=wall-b") {
375	                    got = true;
376	                }
377	                break;
378	            }
379	            Ok(_) => {}
380	            Err(_) => break,
381	        }
382	    }
383	    drop(conn);
384	    server.join().expect("server thread");
385	    assert!(
386	        got,
387	        "injected SpawnReq.env must reach the child: {:?}",
388	        String::from_utf8_lossy(&out)
389	    );
390	}
391
392	#[test]
393	fn spawn_env_reaches_child() {
394	    env_inject_test();
395	}
396
397	/// REQ-HAZARD-RC-ATTACH-FAILFAST path (c): a subscribe to a session whose child
398	/// has EXITED surfaces a prompt Exit (dead-not-reaped → dispatch_subscribe's
399	/// try_wait → Exit frame) or a clean "no such session" error (already reaped) —
400	/// NEVER silence (the infinite-blank hang an attach would otherwise show). Spawn a
401	/// child that exits immediately, then poll-subscribe and assert a prompt
402	/// non-silent reply.
403	// [int->REQ-HAZARD-RC-ATTACH-FAILFAST]
404	fn dead_session_subscribe_test() {
405	    let name = unique_name();
406	    let broker = Broker::bind(&name).expect("bind broker");
407	    let server_broker = Arc::clone(&broker);
408	    thread::spawn(move || {
409	        let _ = server_broker.serve();

            endpoint: "wall-b".to_string(),
            cwd: None,
            env,
            translation_binary: None,
        })
        .unwrap(),
    );

    let mut out = Vec::<u8>::new();
    let mut got = false;
    for _ in 0..400 {
        if String::from_utf8_lossy(&out).contains("ENVCHECK=wall-b") {
            got = true;
            break;
        }
        match read_frame(&mut conn) {
            Ok(f) if f.kind == KIND_OUTPUT => accumulate_output(&f, &mut out),
            Ok(f) if f.kind == KIND_EXIT => {
                // Drain any final output already buffered before deciding.
                if String::from_utf8_lossy(&out).contains("ENVCHECK=wall-b") {
                    got = true;
                }
                break;
            }
            Ok(_) => {}
            Err(_) => break,
        }
    }
    drop(conn);
    server.join().expect("server thread");
    assert!(
        got,
        "injected SpawnReq.env must reach the child: {:?}",
        String::from_utf8_lossy(&out)
    );
}

#[test]
fn spawn_env_reaches_child() {
    env_inject_test();
}

/// REQ-HAZARD-RC-ATTACH-FAILFAST path (c): a subscribe to a session whose child
/// has EXITED surfaces a prompt Exit (dead-not-reaped → dispatch_subscribe's
/// try_wait → Exit frame) or a clean "no such session" error (already reaped) —
/// NEVER silence (the infinite-blank hang an attach would otherwise show). Spawn a
/// child that exits immediately, then poll-subscribe and assert a prompt
/// non-silent reply.
// [int->REQ-HAZARD-RC-ATTACH-FAILFAST]
fn dead_session_subscribe_test() {
    let name = unique_name();
    let broker = Broker::bind(&name).expect("bind broker");
    let server_broker = Arc::clone(&broker);
    thread::spawn(move || {
        let _ = server_broker.serve();


spawn_env test already has a 0..400 poll loop — but it breaks on the FIRST `Err`/`KIND_EXIT`, so on a fast box it bails (18ms, out="") before the env echo arrives. doyle wants the `wait_for_stream` pattern. Finding it.


Grep

fn wait_for_stream|fn env_inject_test|fn read_frame|fn accumulate_output|recv_timeout|set_read_timeout|read_frame_until|Duration::from_


83:            Err(_) => thread::sleep(Duration::from_millis(10)),
172:fn accumulate_output(frame: &Envelope, out: &mut Vec<u8>) {
206:            Err(_) => thread::sleep(Duration::from_millis(10)),
313:fn env_inject_test() {
328:            Err(_) => thread::sleep(Duration::from_millis(10)),
418:            Err(_) => thread::sleep(Duration::from_millis(10)),
485:        thread::sleep(Duration::from_millis(20));
526:                Err(_) => thread::sleep(Duration::from_millis(10)),
645:            Err(_) => thread::sleep(Duration::from_millis(10)),
785:        .recv_timeout(Duration::from_secs(20))
868:            thread::sleep(Duration::from_millis(40));
893:        .recv_timeout(Duration::from_secs(20))
958:            Err(_) => thread::sleep(Duration::from_millis(10)),
1092:    let deadline = std::time::Instant::now() + Duration::from_secs(20);


<task-notification>
<task-id>by746ciks</task-id>
<tool-use-id>toolu_01SJ5PSrQ8jgb8BQXcrWNRro</tool-use-id>
<output-file>C:\Users\decid\AppData\Local\Temp\claude\C--Users-decid-Documents-projects-spt-core\97787e5e-64b2-4afd-b3fe-becaa2ea8030\tasks\by746ciks.output</output-file>
<status>completed</status>
<summary>Background command "Repro p0 on Windows 3x with current pacing" completed (exit code 0)</summary>
</task-notification>


No literal `wait_for_stream` — doyle means the file's robust pattern: `Err(_) => thread::sleep(10ms)` retry (lines 83/206/328/418/526/645/958). The env_inject_test read loop (380) is the ONLY one that does `Err(_) => break` — bails on a transient Err before the echo. Reading the full test to fix.


313	fn env_inject_test() {
314	    let name = unique_name();
315	    let broker = Broker::bind(&name).expect("bind broker");
316	    let server_broker = Arc::clone(&broker);
317	    let server = thread::spawn(move || {
318	        let handle = server_broker.serve_once().expect("accept brain");
319	        handle.join().expect("handler thread");
320	    });
321	    let mut conn = None;
322	    for _ in 0..200 {
323	        match LocalSocketTransport::connect(&name) {
324	            Ok(c) => {
325	                conn = Some(c);
326	                break;
327	            }
328	            Err(_) => thread::sleep(Duration::from_millis(10)),
329	        }
330	    }
331	    let mut conn = conn.expect("connect to broker");
332	    send_hello(&mut conn, Role::Brain).expect("send hello");
333
334	    // A child that prints the injected env var, cross-OS.
335	    #[cfg(unix)]
336	    let (program, args) = (
337	        "sh".to_string(),
338	        vec!["-c".to_string(), "echo ENVCHECK=$SPT_ENDPOINT_ID".to_string()],
339	    );
340	    #[cfg(windows)]
341	    let (program, args) = (
342	        "cmd".to_string(),
343	        vec!["/c".to_string(), "echo ENVCHECK=%SPT_ENDPOINT_ID%".to_string()],
344	    );
345	    let mut env = std::collections::BTreeMap::new();
346	    env.insert("SPT_ENDPOINT_ID".to_string(), "wall-b".to_string());
347	    send(
348	        &mut conn,
349	        KIND_SPAWN,
350	        serde_json::to_value(SpawnReq {
351	            program,
352	            args,
353	            rows: 24,
354	            cols: 80,
355	            endpoint: "wall-b".to_string(),
356	            cwd: None,
357	            env,
358	            translation_binary: None,
359	        })
360	        .unwrap(),
361	    );
362
363	    let mut out = Vec::<u8>::new();
364	    let mut got = false;

fn env_inject_test() {
    let name = unique_name();
    let broker = Broker::bind(&name).expect("bind broker");
    let server_broker = Arc::clone(&broker);
    let server = thread::spawn(move || {
        let handle = server_broker.serve_once().expect("accept brain");
        handle.join().expect("handler thread");
    });
    let mut conn = None;
    for _ in 0..200 {
        match LocalSocketTransport::connect(&name) {
            Ok(c) => {
                conn = Some(c);
                break;
            }
            Err(_) => thread::sleep(Duration::from_millis(10)),
        }
    }
    let mut conn = conn.expect("connect to broker");
    send_hello(&mut conn, Role::Brain).expect("send hello");

    // A child that prints the injected env var, cross-OS.
    #[cfg(unix)]
    let (program, args) = (
        "sh".to_string(),
        vec!["-c".to_string(), "echo ENVCHECK=$SPT_ENDPOINT_ID".to_string()],
    );
    #[cfg(windows)]
    let (program, args) = (
        "cmd".to_string(),
        vec!["/c".to_string(), "echo ENVCHECK=%SPT_ENDPOINT_ID%".to_string()],
    );
    let mut env = std::collections::BTreeMap::new();
    env.insert("SPT_ENDPOINT_ID".to_string(), "wall-b".to_string());
    send(
        &mut conn,
        KIND_SPAWN,
        serde_json::to_value(SpawnReq {
            program,
            args,
            rows: 24,
            cols: 80,
            endpoint: "wall-b".to_string(),
            cwd: None,
            env,
            translation_binary: None,
        })
        .unwrap(),
    );

    let mut out = Vec::<u8>::new();
    let mut got = false;


Prompt:
<task-notification>
<task-id>by746ciks</task-id>
<tool-use-id>toolu_01SJ5PSrQ8jgb8BQXcrWNRro</tool-use-id>
<output-file>C:\Users\decid\AppData\Local\Temp\claude\C--Users-decid-Documents-projects-spt-core\97787e5e-64b2-4afd-b3fe-becaa2ea8030\tasks\by746ciks.output</output-file>
<status>completed</status>
<summary>Background command "Repro p0 on Windows 3x with current pacing" completed (exit code 0)</summary>
</task-notification>


1	=== p0 run 1 ===
2	        PASS [   4.091s] (1/1) spt-daemon::inject_control_wedge p0_paste_wedge_parked_write_does_not_starve_attach_or_wedge_broker
3	     Summary [   4.092s] 1 test run: 1 passed, 9 skipped
4	=== p0 run 2 ===
5	        PASS [   5.527s] (1/1) spt-daemon::inject_control_wedge p0_paste_wedge_parked_write_does_not_starve_attach_or_wedge_broker
6	     Summary [   5.527s] 1 test run: 1 passed, 9 skipped
7	=== p0 run 3 ===
8	        PASS [   5.460s] (1/1) spt-daemon::inject_control_wedge p0_paste_wedge_parked_write_does_not_starve_attach_or_wedge_broker
9	     Summary [   5.461s] 1 test run: 1 passed, 9 skipped
10

=== p0 run 1 ===
        PASS [   4.091s] (1/1) spt-daemon::inject_control_wedge p0_paste_wedge_parked_write_does_not_starve_attach_or_wedge_broker
     Summary [   4.092s] 1 test run: 1 passed, 9 skipped
=== p0 run 2 ===
        PASS [   5.527s] (1/1) spt-daemon::inject_control_wedge p0_paste_wedge_parked_write_does_not_starve_attach_or_wedge_broker
     Summary [   5.527s] 1 test run: 1 passed, 9 skipped
=== p0 run 3 ===
        PASS [   5.460s] (1/1) spt-daemon::inject_control_wedge p0_paste_wedge_parked_write_does_not_starve_attach_or_wedge_broker
     Summary [   5.461s] 1 test run: 1 passed, 9 skipped


p0 PASSES 3/3 on hfenduleam in isolation (4-5.5s) WITH pacing — so pacing doesn't deterministically break Windows p0; the CI Windows fail is most likely shared-box load (live agents + non-quiet Windows Phase B), supporting doyle's dedicated-box point. Still, cfg(unix)-gating the pacing is correct: the storm it fixes is Unix-forkpty-only (Windows ConPTY absorbs), so it can't help Windows and just adds a variable. Gating it.

Executing all three. #2 first — robust deadline poll for spawn_env (retry on Err like every other loop in the file; don't bail on first Err/EXIT):


Edit

    let mut out = Vec::<u8>::new();
    let mut got = false;
    for _ in 0..400 {
        if String::from_utf8_lossy(&out).contains("ENVCHECK=wall-b") {
            got = true;
            break;
        }
        match read_frame(&mut conn) {
            Ok(f) if f.kind == KIND_OUTPUT => accumulate_output(&f, &mut out),
            Ok(f) if f.kind == KIND_EXIT => {
                // Drain any final output already buffered before deciding.
                if String::from_utf8_lossy(&out).contains("ENVCHECK=wall-b") {
                    got = true;
                }
                break;
            }
            Ok(_) => {}
            Err(_) => break,
        }
    }

    // Bounded poll until the injected env echo appears. The child (`echo ENVCHECK=
    // $SPT_ENDPOINT_ID` → exits) prints once then dies, so on a fast/quiet box the
    // EXIT notification and a transient read Err can both arrive BEFORE the OUTPUT
    // frame is delivered. The old loop broke on the first `Err` OR on `EXIT`, so it
    // bailed with out="" (a rotating contention victim, then an 18ms fast-fail on
    // the serial Phase-B box). Instead RETRY on Err (every other read loop in this
    // file does `Err => sleep(10ms)`), bound by a wall-clock deadline, and — once the
    // child has EXITed — keep draining briefly so a trailing OUTPUT frame still lands
    // before we give up.
    let mut out = Vec::<u8>::new();
    let mut got = false;
    let mut exited = false;
    let mut post_exit_drains = 0;
    let deadline = std::time::Instant::now() + Duration::from_secs(10);
    while std::time::Instant::now() < deadline {
        if String::from_utf8_lossy(&out).contains("ENVCHECK=wall-b") {
            got = true;
            break;
        }
        match read_frame(&mut conn) {
            Ok(f) if f.kind == KIND_OUTPUT => accumulate_output(&f, &mut out),
            Ok(f) if f.kind == KIND_EXIT => exited = true,
            Ok(_) => {}
            Err(_) => {
                // After EXIT a run of read errors means the stream is fully drained
                // (no trailing output is coming) — stop. Before EXIT the frame just
                // isn't here yet, so wait and retry.
                if exited {
                    post_exit_drains += 1;
                    if post_exit_drains >= 5 {
                        break;
                    }
                }
                thread::sleep(Duration::from_millis(10));
            }
        }
    }


The file C:\Users\decid\Documents\projects\spt-core\crates\spt-daemon\tests\broker.rs has been updated successfully. (file state is current in your context — no need to Read it back)

    let mut out = Vec::<u8>::new();
    let mut got = false;
    for _ in 0..400 {
        if String::from_utf8_lossy(&out).contains("ENVCHECK=wall-b") {
            got = true;
            break;
        }
        match read_frame(&mut conn) {
            Ok(f) if f.kind == KIND_OUTPUT => accumulate_output(&f, &mut out),
            Ok(f) if f.kind == KIND_EXIT => {
                // Drain any final output already buffered before deciding.
                if String::from_utf8_lossy(&out).contains("ENVCHECK=wall-b") {
                    got = true;
                }
                break;
            }
            Ok(_) => {}
            Err(_) => break,
        }
    }

    // Bounded poll until the injected env echo appears. The child (`echo ENVCHECK=
    // $SPT_ENDPOINT_ID` → exits) prints once then dies, so on a fast/quiet box the
    // EXIT notification and a transient read Err can both arrive BEFORE the OUTPUT
    // frame is delivered. The old loop broke on the first `Err` OR on `EXIT`, so it
    // bailed with out="" (a rotating contention victim, then an 18ms fast-fail on
    // the serial Phase-B box). Instead RETRY on Err (every other read loop in this
    // file does `Err => sleep(10ms)`), bound by a wall-clock deadline, and — once the
    // child has EXITed — keep draining briefly so a trailing OUTPUT frame still lands
    // before we give up.
    let mut out = Vec::<u8>::new();
    let mut got = false;
    let mut exited = false;
    let mut post_exit_drains = 0;
    let deadline = std::time::Instant::now() + Duration::from_secs(10);
    while std::time::Instant::now() < deadline {
        if String::from_utf8_lossy(&out).contains("ENVCHECK=wall-b") {
            got = true;
            break;
        }
        match read_frame(&mut conn) {
            Ok(f) if f.kind == KIND_OUTPUT => accumulate_output(&f, &mut out),
            Ok(f) if f.kind == KIND_EXIT => exited = true,
            Ok(_) => {}
            Err(_) => {
                // After EXIT a run of read errors means the stream is fully drained
                // (no trailing output is coming) — stop. Before EXIT the frame just
                // isn't here yet, so wait and retry.
                if exited {
                    post_exit_drains += 1;
                    if post_exit_drains >= 5 {
                        break;
                    }
                }
                thread::sleep(Duration::from_millis(10));
            }
        }
    }

+    // Bounded poll until the injected env echo appears. The child (`echo ENVCHECK=

+    // $SPT_ENDPOINT_ID` → exits) prints once then dies, so on a fast/quiet box the

+    // EXIT notification and a transient read Err can both arrive BEFORE the OUTPUT

+    // frame is delivered. The old loop broke on the first `Err` OR on `EXIT`, so it

+    // bailed with out="" (a rotating contention victim, then an 18ms fast-fail on

+    // the serial Phase-B box). Instead RETRY on Err (every other read loop in this

+    // file does `Err => sleep(10ms)`), bound by a wall-clock deadline, and — once the

+    // child has EXITed — keep draining briefly so a trailing OUTPUT frame still lands

+    let deadline = std::time::Instant::now() + Duration::from_secs(10);

+    while std::time::Instant::now() < deadline {

-            Ok(f) if f.kind == KIND_EXIT => {

-                // Drain any final output already buffered before deciding.

-                if String::from_utf8_lossy(&out).contains("ENVCHECK=wall-b") {

+            Ok(f) if f.kind == KIND_EXIT => exited = true,

+                // After EXIT a run of read errors means the stream is fully drained

+                // (no trailing output is coming) — stop. Before EXIT the frame just

+                // isn't here yet, so wait and retry.

+                    post_exit_drains += 1;

+                    if post_exit_drains >= 5 {

+                thread::sleep(Duration::from_millis(10));


Now #3: cfg(unix)-gate both pacings (storm is forkpty-only; Windows ConPTY absorbs, pacing there just adds a variable).


            let _ = w.read_event_until(Some(std::time::Instant::now() + Duration::from_millis(20)));
            std::thread::sleep(Duration::from_millis(5));
        }

            let _ = w.read_event_until(Some(std::time::Instant::now() + Duration::from_millis(20)));
            // Unix-only: the CPU storm is a forkpty problem. On Windows ConPTY
            // ABSORBS the journaled write, so there is no storm to pace and the sleep
            // only adds a timing variable (p0 flaked on the SHARED Windows runner) —
            // skip it there; Windows p0 was green pre-pacing.
            #[cfg(unix)]
            std::thread::sleep(Duration::from_millis(5));
        }


The file C:\Users\decid\Documents\projects\spt-core\crates\spt-daemon\tests\inject_control_wedge.rs has been updated successfully. (file state is current in your context — no need to Read it back)

            let _ = w.read_event_until(Some(std::time::Instant::now() + Duration::from_millis(20)));
            std::thread::sleep(Duration::from_millis(5));
        }

            let _ = w.read_event_until(Some(std::time::Instant::now() + Duration::from_millis(20)));
            // Unix-only: the CPU storm is a forkpty problem. On Windows ConPTY
            // ABSORBS the journaled write, so there is no storm to pace and the sleep
            // only adds a timing variable (p0 flaked on the SHARED Windows runner) —
            // skip it there; Windows p0 was green pre-pacing.
            #[cfg(unix)]
            std::thread::sleep(Duration::from_millis(5));
        }

// write continuously in-flight (facet-B's load is intact) while yielding

// the CPU the attacher needs — sustained, not storming.

+            // Unix-only: the CPU storm is a forkpty problem. On Windows ConPTY

+            // ABSORBS the journaled write, so there is no storm to pace and the sleep

+            // only adds a timing variable (p0 flaked on the SHARED Windows runner) —

+            // skip it there; Windows p0 was green pre-pacing.


            let _ = w.read_event_until(Some(Instant::now() + Duration::from_millis(15)));
            std::thread::sleep(Duration::from_millis(5));
        }

            let _ = w.read_event_until(Some(Instant::now() + Duration::from_millis(15)));
            // Unix-only (see the journaled-wedge driver): Windows ConPTY absorbs the
            // paste, so there is no CPU storm to pace here.
            #[cfg(unix)]
            std::thread::sleep(Duration::from_millis(5));
        }


            let _ = w.read_event_until(Some(Instant::now() + Duration::from_millis(15)));
            std::thread::sleep(Duration::from_millis(5));
        }

            let _ = w.read_event_until(Some(Instant::now() + Duration::from_millis(15)));
            // Unix-only (see the journaled-wedge driver): Windows ConPTY absorbs the
            // paste, so there is no CPU storm to pace here.
            #[cfg(unix)]
            std::thread::sleep(Duration::from_millis(5));
        }

// Pace the pump (see the journaled-wedge driver): keep a paste write

// in-flight without a CPU storm that starves the concurrent attacher.

+            // Unix-only (see the journaled-wedge driver): Windows ConPTY absorbs the

+            // paste, so there is no CPU storm to pace here.


#1: add `--no-fail-fast` to both phase invocations.


run: cargo nextest run --workspace --no-fail-fast -E '


The file C:\Users\decid\Documents\projects\spt-core\.github\workflows\ci.yml has been updated. All occurrences were successfully replaced. (file state is current in your context — no need to Read it back)

# exact negation of Phase B, so the two phases partition the suite with nothing

- name: Test — Phase A (light pool, full parallel)

-        run: cargo nextest run --workspace -E 'not ( (package(spt-daemon) & kind(test) & binary(/^(attach|brain_swap|broker|budget|daemon_e2e|daemon_lifecycle_real_brain|digest|dispatch|driven_by_selfheal|handoff|idempotent|inject_control_wedge|input_ack_deadlock|resume|shellchan|two_origin_spanning|twohost)$/)) | (package(spt) & kind(test) & binary(/^(attach_wedge_e2e|bind_cwd_project_e2e|brain_respawn_rename|brain_restart_psyche_dup_e2e|brain_split|brain_survive|dummy_harness_e2e|gateway_owner_shell_e2e|job_escape_e2e|livehost_bootgate_e2e|livehost_bootrace_e2e|livehost_nonresident_e2e|livehost_psyche_fail_e2e|n1_pairing|oneliner_e2e|resume_template_e2e|unhost_psyche_reap_e2e)$/)) | (package(spt-term) & kind(test)) )'

+        run: cargo nextest run --workspace --no-fail-fast -E 'not ( (package(spt-daemon) & kind(test) & binary(/^(attach|brain_swap|broker|budget|daemon_e2e|daemon_lifecycle_real_brain|digest|dispatch|driven_by_selfheal|handoff|idempotent|inject_control_wedge|input_ack_deadlock|resume|shellchan|two_origin_spanning|twohost)$/)) | (package(spt) & kind(test) & binary(/^(attach_wedge_e2e|bind_cwd_project_e2e|brain_respawn_rename|brain_restart_psyche_dup_e2e|brain_split|brain_survive|dummy_harness_e2e|gateway_owner_shell_e2e|job_escape_e2e|livehost_bootgate_e2e|livehost_bootrace_e2e|livehost_nonresident_e2e|livehost_psyche_fail_e2e|n1_pairing|oneliner_e2e|resume_template_e2e|unhost_psyche_reap_e2e)$/)) | (package(spt-term) & kind(test)) )'

- name: Test — Phase B (heavy class, serialized, on a now-quiet box)

-        run: cargo nextest run --workspace -E '(package(spt-daemon) & kind(test) & binary(/^(attach|brain_swap|broker|budget|daemon_e2e|daemon_lifecycle_real_brain|digest|dispatch|driven_by_selfheal|handoff|idempotent|inject_control_wedge|input_ack_deadlock|resume|shellchan|two_origin_spanning|twohost)$/)) | (package(spt) & kind(test) & binary(/^(attach_wedge_e2e|bind_cwd_project_e2e|brain_respawn_rename|brain_restart_psyche_dup_e2e|brain_split|brain_survive|dummy_harness_e2e|gateway_owner_shell_e2e|job_escape_e2e|livehost_bootgate_e2e|livehost_bootrace_e2e|livehost_nonresident_e2e|livehost_psyche_fail_e2e|n1_pairing|oneliner_e2e|resume_template_e2e|unhost_psyche_reap_e2e)$/)) | (package(spt-term) & kind(test))'

+        run: cargo nextest run --workspace --no-fail-fast -E '(package(spt-daemon) & kind(test) & binary(/^(attach|brain_swap|broker|budget|daemon_e2e|daemon_lifecycle_real_brain|digest|dispatch|driven_by_selfheal|handoff|idempotent|inject_control_wedge|input_ack_deadlock|resume|shellchan|two_origin_spanning|twohost)$/)) | (package(spt) & kind(test) & binary(/^(attach_wedge_e2e|bind_cwd_project_e2e|brain_respawn_rename|brain_restart_psyche_dup_e2e|brain_split|brain_survive|dummy_harness_e2e|gateway_owner_shell_e2e|job_escape_e2e|livehost_bootgate_e2e|livehost_bootrace_e2e|livehost_nonresident_e2e|livehost_psyche_fail_e2e|n1_pairing|oneliner_e2e|resume_template_e2e|unhost_psyche_reap_e2e)$/)) | (package(spt-term) & kind(test))'

# nextest does not run doctests — keep them on `cargo test --doc`.


All 3 edits in. Verifying: spawn_env (now robust-poll) run 3x to confirm the race is gone + p0 still green on Windows post-cfg, plus clippy.


Bash

cd "C:\Users\decid\Documents\projects\spt-core" && for i in 1 2 3; do echo "=== spawn_env run $i ==="; cargo nextest run -p spt-daemon --test broker -E 'test(spawn_env_reaches_child)' 2>&1 | grep -iE "PASS|FAIL"; done; echo "=== p0 (post-cfg) ==="; cargo nextest run -p spt-daemon --test inject_control_wedge -E 'test(p0_paste_wedge_parked_write_does_not_starve_attach_or_wedge_broker)' 2>&1 | grep -iE "PASS|FAIL"

spawn_env 3x + p0 post-cfg


Command running in background with ID: bl5b68gjb. Output is being written to: C:\Users\decid\AppData\Local\Temp\claude\C--Users-decid-Documents-projects-spt-core\97787e5e-64b2-4afd-b3fe-becaa2ea8030\tasks\bl5b68gjb.output. You will be notified when it completes. To check interim output, use Read on that file path.


cd "C:\Users\decid\Documents\projects\spt-core" && cargo clippy -p spt-daemon --tests 2>&1 | tail -4; echo "[clippy $?]"; echo "=== --no-fail-fast sites ==="; grep -c -- '--no-fail-fast' .github/workflows/ci.yml

Clippy + verify --no-fail-fast 2 sites


Command running in background with ID: b5b5myfv8. Output is being written to: C:\Users\decid\AppData\Local\Temp\claude\C--Users-decid-Documents-projects-spt-core\97787e5e-64b2-4afd-b3fe-becaa2ea8030\tasks\b5b5myfv8.output. You will be notified when it completes. To check interim output, use Read on that file path.


Both verification runs in flight. Awaiting spawn_env ×3 + p0, and clippy + --no-fail-fast count.


<system-reminder>Warning: the file exists but is shorter than the provided offset (1). The file has 1 lines.</system-reminder>


<task-notification>
<task-id>b5b5myfv8</task-id>
<tool-use-id>toolu_013MnS2Hu2N4fCFR7Yk6fB9b</tool-use-id>
<output-file>C:\Users\decid\AppData\Local\Temp\claude\C--Users-decid-Documents-projects-spt-core\97787e5e-64b2-4afd-b3fe-becaa2ea8030\tasks\b5b5myfv8.output</output-file>
<status>completed</status>
<summary>Background command "Clippy + verify --no-fail-fast 2 sites" completed (exit code 0)</summary>
</task-notification>


Compiling. Awaiting both completions.


<owl_reachability_notice>
You have an active owl perch. When spawning subagents or doing work, use run_in_background: true so you stay reachable for incoming messages.
</owl_reachability_notice>


CAVEMAN MODE ACTIVE (full). Drop articles/filler/pleasantries/hedging. Fragments OK. Code/commits/security: write normal.


Read clippy + spawn_env/p0 results


[clippy 0]
=== --no-fail-fast sites ===
2
===SPAWN/P0===
=== spawn_env run 1 ===
        PASS [   0.066s] (1/1) spt-daemon::broker spawn_env_reaches_child
     Summary [   0.066s] 1 test run: 1 passed, 7 skipped
=== spawn_env run 2 ===
        PASS [   0.057s] (1/1) spt-daemon::broker spawn_env_reaches_child
     Summary [   0.058s] 1 test run: 1 passed, 7 skipped
=== spawn_env run 3 ===
        PASS [   0.056s] (1/1) spt-daemon::broker spawn_env_reaches_child
     Summary [   0.057s] 1 test run: 1 passed, 7 skipped
=== p0 (post-cfg) ===


<task-notification>
<task-id>bl5b68gjb</task-id>
<tool-use-id>toolu_01PapaA7f8h1NfaYapkNPavj</tool-use-id>
<output-file>C:\Users\decid\AppData\Local\Temp\claude\C--Users-decid-Documents-projects-spt-core\97787e5e-64b2-4afd-b3fe-becaa2ea8030\tasks\bl5b68gjb.output</output-file>
<status>completed</status>
<summary>Background command "spawn_env 3x + p0 post-cfg" completed (exit code 0)</summary>
</task-notification>


clippy clean, `--no-fail-fast` = 2 sites ✓, spawn_env 3/3 PASS (robust poll). p0 (post-cfg recompile) still running. Awaiting.


1	=== spawn_env run 1 ===
2	        PASS [   0.066s] (1/1) spt-daemon::broker spawn_env_reaches_child
3	     Summary [   0.066s] 1 test run: 1 passed, 7 skipped
4	=== spawn_env run 2 ===
5	        PASS [   0.057s] (1/1) spt-daemon::broker spawn_env_reaches_child
6	     Summary [   0.058s] 1 test run: 1 passed, 7 skipped
7	=== spawn_env run 3 ===
8	        PASS [   0.056s] (1/1) spt-daemon::broker spawn_env_reaches_child
9	     Summary [   0.057s] 1 test run: 1 passed, 7 skipped
10	=== p0 (post-cfg) ===
11	        PASS [   3.066s] (1/1) spt-daemon::inject_control_wedge p0_paste_wedge_parked_write_does_not_starve_attach_or_wedge_broker
12	     Summary [   3.066s] 1 test run: 1 passed, 9 skipped
13

=== spawn_env run 1 ===
        PASS [   0.066s] (1/1) spt-daemon::broker spawn_env_reaches_child
     Summary [   0.066s] 1 test run: 1 passed, 7 skipped
=== spawn_env run 2 ===
        PASS [   0.057s] (1/1) spt-daemon::broker spawn_env_reaches_child
     Summary [   0.058s] 1 test run: 1 passed, 7 skipped
=== spawn_env run 3 ===
        PASS [   0.056s] (1/1) spt-daemon::broker spawn_env_reaches_child
     Summary [   0.057s] 1 test run: 1 passed, 7 skipped
=== p0 (post-cfg) ===
        PASS [   3.066s] (1/1) spt-daemon::inject_control_wedge p0_paste_wedge_parked_write_does_not_starve_attach_or_wedge_broker
     Summary [   3.066s] 1 test run: 1 passed, 9 skipped


Prompt:
<task-notification>
<task-id>bl5b68gjb</task-id>
<tool-use-id>toolu_01PapaA7f8h1NfaYapkNPavj</tool-use-id>
<output-file>C:\Users\decid\AppData\Local\Temp\claude\C--Users-decid-Documents-projects-spt-core\97787e5e-64b2-4afd-b3fe-becaa2ea8030\tasks\bl5b68gjb.output</output-file>
<status>completed</status>
<summary>Background command "spawn_env 3x + p0 post-cfg" completed (exit code 0)</summary>
</task-notification>


All green: spawn_env 3/3 (robust poll), p0 3.0s post-cfg (Windows pacing removed, still passes), clippy clean, --no-fail-fast ×2. Traceability + a_journaled_input_wedge (original victim, Windows, pacing-cfg'd-out) confirm, then commit.


cd "C:\Users\decid\Documents\projects\spt-core" && traceable-reqs check >/tmp/tr3.out 2>&1; echo "[trace $?]"; echo "=== a_journaled (Windows, pacing off) ==="; cargo nextest run -p spt-daemon --test inject_control_wedge -E 'test(a_journaled_input_wedge_does_not_starve_a_concurrent_rc_attach)' 2>&1 | grep -iE "PASS|FAIL|subscribed"

Traceability + a_journaled on Windows


Command running in background with ID: bc4spmssq. Output is being written to: C:\Users\decid\AppData\Local\Temp\claude\C--Users-decid-Documents-projects-spt-core\97787e5e-64b2-4afd-b3fe-becaa2ea8030\tasks\bc4spmssq.output. You will be notified when it completes. To check interim output, use Read on that file path.


1	[trace 0]
2	=== a_journaled (Windows, pacing off) ===
3

[trace 0]
=== a_journaled (Windows, pacing off) ===


<task-notification>
<task-id>bc4spmssq</task-id>
<tool-use-id>toolu_015vkaWE6dNmYbGDXJa1Zuvd</tool-use-id>
<output-file>C:\Users\decid\AppData\Local\Temp\claude\C--Users-decid-Documents-projects-spt-core\97787e5e-64b2-4afd-b3fe-becaa2ea8030\tasks\bc4spmssq.output</output-file>
<status>completed</status>
<summary>Background command "Traceability + a_journaled on Windows" completed (exit code 0)</summary>
</task-notification>


Awaiting a_journaled result (traceability already green).


1	[trace 0]
2	=== a_journaled (Windows, pacing off) ===
3	        PASS [   4.434s] (1/1) spt-daemon::inject_control_wedge a_journaled_input_wedge_does_not_starve_a_concurrent_rc_attach
4	     Summary [   4.434s] 1 test run: 1 passed, 9 skipped
5

[trace 0]
=== a_journaled (Windows, pacing off) ===
        PASS [   4.434s] (1/1) spt-daemon::inject_control_wedge a_journaled_input_wedge_does_not_starve_a_concurrent_rc_attach
     Summary [   4.434s] 1 test run: 1 passed, 9 skipped


Prompt:
<task-notification>
<task-id>bc4spmssq</task-id>
<tool-use-id>toolu_015vkaWE6dNmYbGDXJa1Zuvd</tool-use-id>
<output-file>C:\Users\decid\AppData\Local\Temp\claude\C--Users-decid-Documents-projects-spt-core\97787e5e-64b2-4afd-b3fe-becaa2ea8030\tasks\bc4spmssq.output</output-file>
<status>completed</status>
<summary>Background command "Traceability + a_journaled on Windows" completed (exit code 0)</summary>
</task-notification>


All verified: a_journaled PASS 4.4s (Windows, pacing-off), traceability green. Committing the 3 fixes.


cd "C:\Users\decid\Documents\projects\spt-core" && git add .github/workflows/ci.yml crates/spt-daemon/tests/broker.rs crates/spt-daemon/tests/inject_control_wedge.rs && git commit -q -F - <<'EOF'
ci+test: --no-fail-fast both phases; robust spawn_env poll; Unix-only wedge pacing (doyle RUN#1 batch)

Two-phase RUN#1 went RED on both runners — but in Phase B on the (Linux-)quiet box,
i.e. REAL signal, not load, exactly as the split intended. Three fixes so the next
run yields the COMPLETE heavy-suite picture in one shot:

1. CONVERGENCE — add --no-fail-fast to BOTH phase nextest invocations. Phase B was
   cancelled on its first failure (Linux ran 43/90, Windows 72/91; a_journaled_input_
   wedge never ran), hiding the rest. The slow-timeout backstop still bounds hangs;
   this only stops the early-cancel so we batch-fix instead of one-per-round.

2. REAL TEST BUG — spawn_env_reaches_child (broker.rs): a pre-existing read race
   (rotating contention victim, then an 18ms fast-fail on the serial box with out="").
   The child echoes the injected env once then exits, so on a fast box a transient
   read Err / the EXIT frame arrived before the OUTPUT frame, and the loop broke with
   nothing read. Replaced break-on-first-Err / break-on-EXIT with the file's standard
   pattern: retry on Err (sleep 10ms), bound by a wall-clock deadline, and keep
   draining briefly after EXIT so a trailing OUTPUT frame still lands. 3/3 green.

3. WINDOWS p0 REGRESSION — gate the wedge-driver pacing behind #[cfg(unix)]. The
   ~6094-op CPU storm is a forkpty problem; on Windows ConPTY ABSORBS the write so
   there is no storm to pace, and the 5ms sleep only added a timing variable
   (p0_paste_wedge was green pre-pacing on Windows, flaked post-pacing on the SHARED
   hfenduleam runner). Repro on hfenduleam: p0 passes 3/3 in isolation WITH pacing, so
   the CI fail is most likely shared-box load (Windows Phase B is not truly quiet —
   live agents share the box; that's the operator's dedicated-box call). cfg(unix)
   keeps the needed Unix pacing and removes it as a Windows variable either way.

Verified local (Windows): clippy clean; traceable-reqs green; spawn_env 3/3,
p0_paste_wedge + a_journaled_input_wedge green with pacing cfg'd out; --no-fail-fast
present in both phases.

Co-authored by: todlando
EOF
git push origin v0.13.0-p1b-ack-deadlock 2>&1 | tail -3

Commit + push RUN#1 batch fixes


warning: in the working copy of 'crates/spt-daemon/tests/inject_control_wedge.rs', LF will be replaced by CRLF the next time Git touches it
To https://github.com/SaberMage/spt-core.git
   bfe760e..18416fd  v0.13.0-p1b-ack-deadlock -> v0.13.0-p1b-ack-deadlock


Pushed 18416fd. Reporting to doyle.


$OWL send doyle <<'EOF'
RUN#1 BATCH FIXES PUSHED -> 18416fd on v0.13.0-p1b-ack-deadlock. All 3 landed. Ready for your single --no-fail-fast re-run to get the full heavy-suite picture.

1. CONVERGENCE: --no-fail-fast added to BOTH phase invocations (verified: 2 sites in ci.yml). slow-timeout backstop untouched. Next run shows the COMPLETE Phase-B failure set, no early-cancel.

2. spawn_env_reaches_child (REAL bug, broker.rs): confirmed your diagnosis — the loop broke on the FIRST read Err OR on EXIT, so on a fast box the EXIT/transient-Err beat the OUTPUT frame and it bailed with out="". Fixed to the file's standard pattern: retry on Err (sleep 10ms), wall-clock-deadline bound, and keep draining after EXIT so a trailing OUTPUT frame still lands. Ran it 3x on hfenduleam: 3/3 PASS.

3. p0 WINDOWS: gated BOTH wedge-driver pacings behind #[cfg(unix)]. KEY REPRO FINDING (you asked): on hfenduleam, p0 passes 3/3 in ISOLATION *with* the pacing still in (4-5s each). So the pacing does NOT deterministically break Windows p0 — the CI Windows fail is almost certainly SHARED-BOX LOAD (live agents + non-quiet Windows Phase B), which supports your dedicated-box surfacing to the operator. cfg(unix) is still correct: the CPU storm is forkpty-only (Windows ConPTY absorbs the paste = no storm to pace), so it can't help Windows and only added a variable — now removed. Unix keeps the pacing it needs.

VERIFIED LOCAL (Windows): clippy clean; traceable-reqs green; spawn_env 3/3, p0_paste_wedge + a_journaled_input_wedge both green with pacing cfg'd OUT; --no-fail-fast in both phases.

FLAG for your gate: Windows Phase B on shared hfenduleam is NOT truly quiet (point 3) — if p0 (or another heavy test) still flakes there post-fix, it's the dedicated-Windows-box decision, not a code bug. Linux/kitsubito Phase B IS quiet. Over to you: fold + re-run ONCE with --no-fail-fast -> full failure set -> batch-close. Reachable. -todlando
EOF

Report batch fixes to doyle


➜ SENT:doyle


Pushed 18416fd, reported. doyle folds + re-runs once with --no-fail-fast to surface the complete heavy-suite failure set, then batch-close. Idle until his verdict.


ScheduleWakeup

RUN#1 batch fixes pushed; awaiting doyle's --no-fail-fast re-run verdict (full heavy-suite picture) via the armed Monitor — fallback heartbeat only.

Prompt: <<autonomous-loop-dynamic>>


Next wakeup scheduled for 22:30:00 (in 1556s). Nothing more to do this turn — the harness re-invokes you when the wakeup fires or a task-notification arrives.


Three RUN#1 fixes delivered (18416fd): `--no-fail-fast` both phases, robust spawn_env poll (3/3), Unix-only wedge pacing (+ repro showing the Windows p0 fail is shared-box load, not pacing). All local gates green. Awaiting doyle's --no-fail-fast re-run for the complete heavy-suite picture.


<task-notification>
<task-id>b4cwwiglf</task-id>
Monitor event: "« spt event »"
<event><EVENT-PART seq="1/3" id="e2877b58" type="msg" from="doyle">18416fd GATE PASS + FOLDED (clean FF). Verified: spawn_env poll fix is the proper deadline+retry-on-Err+drain-after-EXIT pattern (was `Err=&gt;break`, the real bug); pacing now cfg(unix) (compiles out clean on Windows); --no-fail-fast 2 sites; 3-site HEAVY filter still byte-identical + gateway present. Your p0-isolation</EVENT-PART>
<EVENT-PART seq="2/3" id="e2877b58"> repro (3/3 with pacing in) is the right call — Windows fail = shared-box load, not pacing.

Re-run 27894232108 going with --no-fail-fast = FULL heavy-suite failure set this time (no early-cancel). Watching. This tells us: (a) is a_journaled (original victim) finally green, (b) the complete list of any remaining Phase-B flakes to batch</EVENT-PART>
<EVENT-PART seq="3/3" id="e2877b58">-close. If the only residual is p0/Windows on shared hfenduleam, that's the operator's dedicated-box call, not more code. Report incoming. -doyle</EVENT-PART></event>
</task-notification>


doyle: 18416fd GATE PASS + FOLDED, all fixes verified. Re-run 27894232108 with --no-fail-fast going now → full heavy-suite failure set (no early-cancel) → tells us (a) is a_journaled finally green, (b) complete residual flake list. If only residual is p0/Windows on shared hfenduleam → operator's dedicated-box call, not code.

Nothing on me — doyle reports. Idle, fallback set.


<task-notification>
<task-id>b4cwwiglf</task-id>
Monitor event: "« spt event »"
<event><EVENT-PART seq="1/5" id="e38e20c8" type="msg" from="doyle">RUN with --no-fail-fast gave the FULL picture. HOLD on any product fix — don't build blind.

LINUX (kitsubito, QUIET serial box): 87/90 PASS. The 3 fails are ALL inject_control_wedge, ALL &quot;concurrent attach not serviced under sustained input&quot;: a_journaled (subscribed=false, pumped 4859), p0_paste (subs</EVENT-PART>
<EVENT-PART seq="2/5" id="e38e20c8">cribed=false, pumped 5967, backpressured=true), g2 (op_flushed=false). spawn_env FIXED (gone).
WINDOWS (shared hfenduleam): 90/91, only p0 fails (= shared-box load, your call confirmed).

KEY: on the QUIET box, the OTHER heavy real-broker/PTY tests (attach, broker, etc.) PASS. Only the 3 SUSTAINED-INPUT-WEDGE gates fail. So this is N</EVENT-PART>
<EVENT-PART seq="3/5" id="e38e20c8">OT load and NOT real-broker/PTY generally — it's specifically the sustained-input-under-concurrent-attach path on forkpty.

I read broker.rs: InputWriter::enqueue is NON-BLOCKING try_send (drop-on-full) — so the dispatch thread does NOT block on the input handoff. That REFUTES the simple &quot;dispatch wedges on the write&quot; theor</EVENT-PART>
<EVENT-PART seq="4/5" id="e38e20c8">y. The real root is subtler (something still serializes/starves the attacher's subscribe under a 5000-op flood on forkpty) and needs LINUX-SIDE INSTRUMENTATION to find — which you can't do on Windows (ConPTY absorbs the write so it passes trivially there; that's why this was masked).

I'm escalating the tooling + scope question to the </EVENT-PART>
<EVENT-PART seq="5/5" id="e38e20c8">operator (no Linux box = can't repro/fix locally; kitsubito CI = slow loop). DON'T guess-patch. Standby for the operator's direction on how we root-cause the forkpty path. Your two-phase split DID its job — it isolated a real product signal from the load noise. -doyle</EVENT-PART></event>
</task-notification>


doyle: full --no-fail-fast picture. LINUX quiet box 87/90 — the only 3 fails are ALL inject_control_wedge SUSTAINED-INPUT-WEDGE gates (a_journaled subscribed=false pumped 4859; p0 subscribed=false pumped 5967; g2 op_flushed=false). spawn_env FIXED. Windows 90/91 (only p0 = shared-box load, confirmed). KEY: other heavy tests pass on the quiet box → NOT load, NOT real-broker/PTY generally → specifically the concurrent-attach-under-sustained-forkpty-input path. doyle refuted the dispatch-blocks theory (InputWriter::enqueue is non-blocking try_send). Needs **Linux-side instrumentation** (Windows ConPTY masks it). doyle escalating to operator because **"no Linux box = can't repro/fix locally."**

That premise is the unblock: per my cross-machine rig, I have **gravity-linux — the Linux/forkpty build host**. I can repro + instrument the forkpty path there directly, breaking the no-Linux-box / slow-CI-loop bottleneck. Surfacing this to doyle now (he doesn't know I have it) + offering — not guess-patching the product.


Bash

$OWL send doyle <<'EOF'
HOLD acknowledged — no product guess-patch. But your escalation premise ("no Linux box = can't repro/fix locally; kitsubito CI = slow loop") may be solvable NOW:

I HAVE A LINUX FORKPTY BOX. Per the cross-machine test rig: gravity-linux (Ubuntu, the dedicated Linux/forkpty BUILD host, pw-auth + askpass shim). It can build spt-core and run the inject_control_wedge gates natively on forkpty — exactly the masked path. So I can:
  1. Repro the 3 sustained-input-wedge fails on gravity-linux directly (fast local loop, not the kitsubito CI round-trip), confirming they fail off-CI.
  2. Add Linux-side INSTRUMENTATION to the forkpty attach/subscribe path (timestamps around the attacher's subscribe vs the driver flood; where the subscribe reply stalls; whether serve_attach is starved at the broker vs the conn) and bisect the real root — the subtle serialization you flagged, given enqueue is non-blocking try_send.
  (Alt, your call: kitsubito itself is the LAN Linux CI runner — I could run the test on it directly outside the CI workflow for an even-closer repro, but that's your box, so gravity-linux is the clean choice.)

This directly removes the "can't repro locally" blocker you're escalating. I will NOT touch the product fix — only repro + instrument + report findings so the actual root-cause is evidence-based, not guessed.

WANT ME TO PROCEED on gravity-linux? If operator is mid-decision on tooling, this IS the tool. Say go and I'll stand up the repro + instrumentation and report what starves the subscribe. Standing by. -todlando
EOF

Offer gravity-linux repro to doyle


Offered. Standby for doyle's go / operator direction on the gravity-linux repro+instrument (I'll verify reachability as step 1 if greenlit — holding the SSH until then to avoid a blind auth prompt). No product patch per HOLD.


ScheduleWakeup

Offered gravity-linux as the missing Linux repro box; awaiting doyle/operator go-ahead via the armed Monitor before standing up instrumentation — fallback heartbeat only.

Prompt: <<autonomous-loop-dynamic>>


Next wakeup scheduled for 22:43:00 (in 1222s). Nothing more to do this turn — the harness re-invokes you when the wakeup fires or a task-notification arrives.


Standby. Pushed everything through 18416fd; two-phase split isolated the real signal (3 forkpty sustained-input-wedge gates on the quiet Linux box). Offered gravity-linux as the missing Linux repro/instrumentation box to unblock doyle's escalation. Awaiting his go / operator direction — will not guess-patch the product.


<task-notification>
<task-id>b4cwwiglf</task-id>
Monitor event: "« spt event »"
<event><EVENT-PART seq="1/6" id="a9d2b09c" type="msg" from="doyle">GO — repro + instrument on gravity-linux. This is exactly the unblock (you=executor+forkpty box, I=gate; operator ALSO just gave me SSH to kitsubito, so I'll cross-check the repro on the actual CI box independently). NO product fix — repro + instrument + report evidence only, as you said.

INSTRUMENTATION TARG</EVENT-PART>
<EVENT-PART seq="2/6" id="a9d2b09c">ETS (make the root evidence-based):
1. Confirm all 3 repro on gravity-linux off-CI in ISOLATION (one at a time, not under load): a_journaled_input_wedge, p0_paste_wedge, g2_no_commit_deadline. If they fail isolated+quiet on a real forkpty box -&gt; definitively product, not CI/load.
2. The core question: enqueue is non-blocking try_send,</EVENT-PART>
<EVENT-PART seq="3/6" id="a9d2b09c"> so what SERIALIZES the attacher's net_stream_subscribe behind the driver's ~5000-op flood? Timestamp at the BROKER: subscribe-request-received vs subscribe-reply-sent, and the driver-frame processing. Where's the stall?
3. PRIME SUSPECTS to confirm/refute:
   a. Single broker dispatch thread processing the driver's 5000 frames serially </EVENT-PART>
<EVENT-PART seq="4/6" id="a9d2b09c">AHEAD of the subscribe frame (head-of-line blocking on one conn's flood).
   b. OutputLog Mutex (broker.rs:817 log: Arc&lt;Mutex&lt;OutputLog&gt;&gt;) contention: the flood child (`yes FLOOD`) dumps massive OUTPUT; the drain holds the log mutex; the subscribe needs it to register+replay -&gt; starves. NOTE this is OUTPUT-volume-driven = WOR</EVENT-PART>
<EVENT-PART seq="5/6" id="a9d2b09c">SE on a fast quiet box (more output) -&gt; would explain quiet-fails-vs-loaded-passes. Strong candidate.
   c. A per-session lock the subscribe path shares with the input/drain path.
4. g2 is the floor-release/commit-deadline variant (op_flushed=false) — likely same family but confirm its specific stall.

Report: which suspect it</EVENT-PART>
<EVENT-PART seq="6/6" id="a9d2b09c"> is + the timestamped evidence. Then I gate the root + we scope the fix. Your two-phase split already proved its worth by isolating this. Standing by for findings. -doyle</EVENT-PART></event>
</task-notification>


<owl_reachability_notice>
You have an active owl perch. When spawning subagents or doing work, use run_in_background: true so you stay reachable for incoming messages.
</owl_reachability_notice>


CAVEMAN MODE ACTIVE (full). Drop articles/filler/pleasantries/hedging. Fragments OK. Code/commits/security: write normal.


doyle: GO — repro + instrument on gravity-linux, report evidence only, no product fix. He has kitsubito SSH for independent cross-check. Clear instrumentation targets + 3 suspects (HOL blocking on the flood conn; **OutputLog Mutex contention — his strong candidate, output-volume-driven so worse on a quiet box**; shared per-session lock).

Starting. First: establish gravity-linux reachability + locate the repo/build there. Checking SSH setup (memory: david@gravity-linux, pw-auth + askpass shim).


Bash

cat ~/.ssh/config 2>/dev/null | grep -iA6 gravity; echo "---hosts---"; grep -i gravity ~/.ssh/known_hosts 2>/dev/null | head -2 | cut -c1-40; echo "---askpass shim search---"; ls ~/.ssh/*askpass* ~/*askpass* 2>/dev/null; ls ~/bin 2>/dev/null | grep -iE "gravity|askpass|ssh" | head

Find gravity-linux ssh config + askpass shim


---hosts---
gravity-runner ssh-ed25519 AAAAC3NzaC1lZ
gravity-runner ssh-rsa AAAAB3NzaC1yc2EAA
---askpass shim search---


`gravity-runner` is the host (in known_hosts, ed25519+rsa). No ssh-config alias / visible askpass shim. Testing key-auth (BatchMode, fails fast — no hang) + searching for the shim/cred mechanism.


echo "=== key-auth test ==="; ssh -o BatchMode=yes -o ConnectTimeout=8 david@gravity-runner 'echo OK; uname -sr; nproc' 2>&1 | head -8
echo "=== shim/cred search ==="; grep -rilE "gravity|askpass|bigscreen" ~/.bashrc ~/.bash_profile ~/.profile ~/.config 2>/dev/null | head; ls ~/Documents/projects 2>/dev/null | head -20

Test key auth + search for gravity helper


=== key-auth test ===
ssh: connect to host gravity-runner port 22: Connection timed out
=== shim/cred search ===
,claude-bigscreen
AppData
HMDUtility
Ubers-SD-Files
_3functions
attractor
bey-closer-t1
beyond-eye-tracking-client
beyond_bootloader
beyond_synaptics
big-eye-utils
bigscreen
bigscreen10
bigstack
biodroid-auth
broker-A.log
bs2_eyetracking
calibot
check-canting
claude-screen-timelapse


`gravity-runner:22` connection TIMED OUT (network unreachable, not auth). Recalling the rig's "Tailscale-down gotcha" — gravity-runner is likely behind Tailscale. Checking.


echo "=== tailscale ==="; tailscale status 2>&1 | grep -iE "gravity|kitsubito|stopped|offline|^[0-9]" | head -12; echo "[exit ${PIPESTATUS[0]}]"; echo "=== resolve ==="; getent hosts gravity-runner 2>/dev/null || nslookup gravity-runner 2>&1 | tail -4

Check tailscale + resolve gravity-runner


=== tailscale ===
100.68.35.65    hfenduleam                    brandon@  windows  -
100.125.242.88  enlyzeam                      brandon@  windows  -
100.72.210.9    flaerdine                     brandon@  android  active; relay "lax"; offline, last seen 3d ago, tx 7911072 rx 0
100.100.62.43   gravity-linux                 brandon@  linux    offline, last seen 5d ago
100.65.194.82   gravity-runner                brandon@  windows  active; relay "lax"; offline, last seen 8d ago, tx 624 rx 0
100.98.197.12   kitsubito                     brandon@  linux    active; offers exit node; direct 192.168.1.154:38881, tx 45735964 rx 297429388
100.112.85.82   lepicep                       brandon@  linux    offline, last seen 29d ago
100.98.213.33   philip-vibe                   philip@   linux    offline, last seen 31d ago
100.122.242.42  philips-desktop-threadripper  philip@   windows  -
100.98.214.87   philips-desktop               philip@   windows  -
100.94.119.17   philips-iphone-12             philip@   iOS      offline, last seen 35d ago
100.78.177.97   philips-macbook-pro           philip@   macOS    offline, last seen 1h ago
[exit 0]
=== resolve ===
*** dsldevice can't find gravity-runner: Non-existent domain

Server:  dsldevice
Address:  192.168.1.254


Reality check: **gravity-linux is OFFLINE (last seen 5d ago, per tailscale)**; gravity-runner offline 8d and it's Windows anyway. My forkpty-box offer was stale — only **kitsubito** (the LAN Linux CI runner, 192.168.1.154) is online, and that's doyle's cross-check box. Pivoting honestly: I become instrument-author/analyst; doyle (with kitsubito SSH) executes. Reporting + starting the instrumentation diff against his exact targets.


$OWL send doyle <<'EOF'
CORRECTION — my forkpty box is DOWN. tailscale status: gravity-linux OFFLINE (last seen 5d ago); gravity-runner offline 8d AND it's Windows; lepicep/flaerdine offline too. The ONLY online Linux box is KITSUBITO (100.98.197.12 / LAN 192.168.1.154) — which is YOUR cross-check box (you just got SSH). My stale memory said gravity-linux was a live build host; it isn't right now. Sorry for the head-fake.

PIVOT (plays to what's actually available): I author the INSTRUMENTATION, you run it on kitsubito.
- I'll push a throwaway instrumentation branch off the test branch with timestamped probes at your exact targets:
  (1) BROKER subscribe path: t_subscribe_request_received vs t_subscribe_reply_sent (the stall window).
  (2) driver-frame dispatch: per-frame processing on the flooded conn (HOL suspect a).
  (3) OutputLog mutex (broker.rs:817 Arc<Mutex<OutputLog>>): acquire-wait + hold-duration on BOTH the output-drain path and the subscribe register/replay path (your strong suspect b — output-volume-driven, worse on quiet box).
  (4) any per-session lock the subscribe shares with input/drain (suspect c).
  eprintln with monotonic micros, gated behind an env (SPT_WEDGE_TRACE=1) so it's off by default and never ships.
- You run the 3 gates isolated on kitsubito with the env set, capture stderr, send me the traces. I analyze -> name the suspect + the stall location with numbers. You gate the root.

Do you have kitsubito SSH bandwidth to run them, or do you want me to ALSO request kitsubito access from the operator so I can run+instrument directly (tighter loop, no log-relay round-trip)? Your call. Meanwhile I'll start writing the instrumentation now — it's needed either way. NO product fix. -todlando
EOF

Report box-down pivot to doyle


➜ SENT:doyle


Starting the instrumentation groundwork — mapping the broker subscribe / OutputLog-mutex / dispatch paths to place precise probes. Exploring broker.rs around the log mutex + subscribe/replay.


19://!   in a bounded ring. The current subscriber (a brain connection) receives
20://!   chunks live; all subscriber writes happen *under the log lock*, so frames
22://! - **Resume from a cursor.** A reconnecting brain sends `subscribe` with its
23://!   last-seen `seq + 1`; the broker replays the ring from there, then streams
25://!   attached* sits in the ring and is replayed on the next subscribe — so a
29://! brain disconnect only detaches the subscriber; the child, its PTY, and the
55:    size_envelope, subscribed_envelope, BrainRestarted, EndpointInputReq,
59:    Spawned, SubscribeOutcome, SubscribeReq, UnsubscribeReq, KIND_BRAIN_RESTART, KIND_BRAIN_RESTARTED, KIND_ENDPOINT_INPUT, KIND_ERROR, KIND_EXIT,
72:/// replay frames, command acks, and exit/error events all write through this.
78:/// window never evicts unreplayed output in practice; the bound is what keeps a
83:/// OVERFLOWS the viewer is evicted — the drain `try_send`s and never blocks
87:/// owns the replay batch), so a viewer attaching to a busy session is not
98:/// dead socket). The drain evicts on either and NEVER blocks on a viewer — this
105:/// One read-only viewer's isolated sink (REQ-HAZARD-VIEWER-ISOLATION). The drain
108:/// only its own queue — never the drain. When the queue overflows the sink is
124:/// drain blocks on a bounded `send_timeout` and the controller is detached only
129:/// How long the drain tolerates a CONTROLLER whose socket has fully stalled (its
134:/// merely slow operator drains a slot before this elapses and is untouched.
169:/// socket write so a backed-up controller can never stall the session drain
170:/// thread (the v0.12.x wedge: the controller write was inline on the drain,
184:    /// drain's bounded `send_timeout` then sees `Disconnected` and detaches — or
192:/// The session's single drain thread is the only producer ([`OutputLog::append`]).
198:struct OutputLog {
206:    /// [`ControllerSink::by`] and keys ownership — a same-`by` re-subscribe
212:    /// drain's deadline-evict ([`mark_controller_gone`]) carries the epoch it
233:    /// to the controller, +1). It is **log** state, not subscriber state, so it
236:    /// of replaying the whole ring from 0. **Viewer writes NEVER move it**
244:    /// `attach(sub, 0)` rewind-replay would reset the resume point under a live
249:    /// the cursor moved off the drain thread with the controller delivery itself.
292:    /// W1: the controller write is no longer inline here. The drain used to call
294:    /// so a backed-up controller socket parked the drain thread WITH THE LOCK HELD
297:    /// drain does a bounded, off-lock send into the controller's writer-thread
299:    /// single drain thread.
302:    fn append(&mut self, bytes: &[u8]) -> Option<ControllerJob> {
327:        // socket write + advances the authoritative cursor). The drain never
339:    /// [`resolve_subscribe`] reads this.
346:    /// W1: the ring replay is now the INITIAL BATCH of a dedicated controller
365:        // Ring replay = the writer thread's initial batch (owned by the thread,
366:        // NOT pushed through the live channel — replay must never block the drain).
400:    /// Deadline-evict path (W1): the drain observed a fully-stalled controller and
402:    /// controller generation the drain saw (`epoch`), so a NEWER controller that
411:    /// thread (NOT through the bounded live queue — replay must not trip the
413:    /// live queue. The drain thread fans live frames in via `try_send`.
417:        // The size frame + the ring replay are the writer's initial batch (owned
440:    /// Resolve a controller/viewer subscribe under the W2.5 model
445:    fn resolve_subscribe(
610:/// `initial` batch (size frame + ring replay) once, then drain live frames from
612:/// thread; the drain thread's next `try_send` then sees `Disconnected` and
613:/// evicts the row. The drain thread itself never blocks on this socket.
645:/// [`OutputLog::append`] so the drain can do the bounded send OFF the log lock

[Showing results with pagination = limit: 50]


Rich signal: OutputLog's drain (`append`, line 302) holds the log lock per output frame; `resolve_subscribe` (445) needs the same lock to register+replay — doyle's suspect b mechanism exactly. Mapping the precise `.lock()` sites + subscribe-request handler to place probes (designing now; will write+push once doyle confirms the execution path, since I have a coordination question open with him).


49:use crate::codec::{read_frame, write_frame};
56:    ErrorEvent, ExitEvent, InputReq, KillReq, NetDialReq, NetPresenceSubscribeReq, NetSent,
57:    NetStatusReply, NetStreamOpenReq, NetStreamOpened, NetStreamSendReq, NetStreamSubscribeReq,
59:    Spawned, SubscribeOutcome, SubscribeReq, UnsubscribeReq, KIND_BRAIN_RESTART, KIND_BRAIN_RESTARTED, KIND_ENDPOINT_INPUT, KIND_ERROR, KIND_EXIT,
65:    KIND_SPAWNED, KIND_SUBSCRIBE, KIND_UNSUBSCRIBE,
339:    /// [`resolve_subscribe`] reads this.
445:    fn resolve_subscribe(
496:                // writer thread (best-effort, off the dispatch thread) — the
498:                // inline write here would block the new attacher's dispatch.
616:        let ok = match send.lock() {
625:        let ok = match send.lock() {
730:        // seq stream. The gate is read UNDER `send.lock()`, atomically with the
737:        let ok = match send.lock() {
764:        let ok = match send.lock() {
782:/// `dispatch_input`), the queue that feeds inbound `<EVENT>`s to the inject worker
784:/// child handle (so `dispatch_input` can fire content-free `{type:input}` pings
789:    /// Controller-input buffer + inject-floor flag, shared with `dispatch_input`.
794:    /// The live child — shared so `dispatch_input` fires content-free pings while
798:    /// session reverts to raw inject and `dispatch_input` stops pinging.
809:    /// `write_input`. Every dispatch-side write ENQUEUES here and returns at once,
811:    /// writer thread, never the broker dispatch thread.
819:    /// inbound dispatcher's gate subject for remote-drive (D9-1).
831:/// a wedged harness fills this and then DROPS, never blocking the dispatch
857:/// parks ONLY this thread — the broker dispatch thread, attach-opens, resizes,
893:    /// rising edge); the next accepted enqueue clears it (heal). The dispatch
949:        let chunk = floor.lock().unwrap().take_or_release();
964:/// input now buffers in `dispatch_input`), feed the binary the `{type:event}`,
994:        floor.lock().unwrap().open();
1050:/// reverts to raw inject and `dispatch_input` stops pinging), log it, and reap the
1074:    /// without a relock on the hot effect-dispatch read path (`.get()` is
1150:    /// the net endpoint up, after which the dispatcher + peer pump are spawned.
1172:    /// dispatch can never stall another's (the per-session half is
1173:    /// [`Broker::dispatch_spawn`]'s drain/waiter threads).
1197:        self.sessions.lock().unwrap().len()
1204:            .lock()
1230:            .lock()
1233:            .map(|h| h.log.lock().unwrap().next_seq)
1236:    /// Drive one brain connection: handshake, then dispatch its command frames
1240:    fn handle_conn(self: &Arc<Self>, conn: Stream) -> io::Result<()> {
1252:            let env = match read_frame(&mut recv) {

[Showing results with pagination = limit: 40]


Mapping the two contention sites for probes: `append`/drain (holds log lock per output frame) and `resolve_subscribe` (needs it to register+replay), plus the SUBSCRIBE dispatch in `handle_conn`.


445	    fn resolve_subscribe(
446	        &mut self,
447	        sub: SharedSend,
448	        from_seq: u64,
449	        intent: AttachIntent,
450	        by: Option<String>,
451	    ) -> SubscribeOutcome {
452	        if intent == AttachIntent::Viewer {
453	            if self.viewers.len() >= MAX_VIEWERS {
454	                // Soft cap reached — refuse the viewer (bounds thread count).
455	                return SubscribeOutcome::BusyControlled {
456	                    by: "viewer cap reached".to_string(),
457	                };
458	            }
459	            self.add_viewer(sub, from_seq);
460	            self.stamp_viewer_count();
461	            return SubscribeOutcome::Viewer;
462	        }
463	        // Control or Take.
464	        if self.controller.is_none() {
465	            // Free endpoint → become controller (nothing to displace).
466	            self.become_controller(sub, by, from_seq);
467	            return SubscribeOutcome::Controller;
468	        }
469	        let same_identity = self.controller_by() == by.as_deref();
470	        if same_identity {
471	            // Same operator (or both local) re-serving — silent re-take. This is
472	            // the gate-#7 path: a successor re-taking the slot after a brain
473	            // restart NEVER fires Displaced.
474	            self.become_controller(sub, by, from_seq);
475	            return SubscribeOutcome::Controller;
476	        }
477	        if by.is_none() {
478	            // The LOCAL brain re-attaching while a REMOTE controls — never steal;
479	            // fall back to a silent viewer (gate #7 for the local-resume path).
480	            self.add_viewer(sub, from_seq);
481	            self.stamp_viewer_count();
482	            return SubscribeOutcome::Viewer;
483	        }
484	        if self.controller_by().is_none() {
485	            // A remote takes an UNDRIVEN session (only the local spawner held the
486	            // slot) — silent control, no loud displace (there is no remote driver
487	            // to notify).
488	            self.become_controller(sub, by, from_seq);
489	            return SubscribeOutcome::Controller;
490	        }
491	        // A DIFFERENT remote controls it.
492	        match intent {
493	            AttachIntent::Take => {
494	                // The ONLY loud-displace path: notify the incumbent, then take.
495	                // W1: route the Displaced notice through the OLD controller's
496	                // writer thread (best-effort, off the dispatch thread) — the
497	                // incumbent we're kicking may be exactly the wedged one, so an
498	                // inline write here would block the new attacher's dispatch.
499	                if let Some(old) = &self.controller {
500	                    let frame = displaced_envelope(self.session_id, by.as_deref().unwrap_or(""));
501	                    let _ = old.tx.try_send(CtrlMsg::Control(frame));
502	                }
503	                self.become_controller(sub, by, from_seq);
504	                SubscribeOutcome::TookControl
505	            }
506	            _ => SubscribeOutcome::BusyControlled {
507	                by: self.controller_by().unwrap_or_default().to_string(),
508	            },
509	        }
510	    }
511
512	    /// Update the stored PTY size and push a `size` frame to every viewer (the
513	    /// letterbox feed). Called on a controller resize. Viewer pushes are
514	    /// non-blocking with eviction, like [`OutputLog::append`].
515	    fn set_size_and_notify(&mut self, rows: u16, cols: u16) {
516	        self.size = (rows, cols);
517	        if self.viewers.is_empty() {
518	            return;
519	        }

    fn resolve_subscribe(
        &mut self,
        sub: SharedSend,
        from_seq: u64,
        intent: AttachIntent,
        by: Option<String>,
    ) -> SubscribeOutcome {
        if intent == AttachIntent::Viewer {
            if self.viewers.len() >= MAX_VIEWERS {
                // Soft cap reached — refuse the viewer (bounds thread count).
                return SubscribeOutcome::BusyControlled {
                    by: "viewer cap reached".to_string(),
                };
            }
            self.add_viewer(sub, from_seq);
            self.stamp_viewer_count();
            return SubscribeOutcome::Viewer;
        }
        // Control or Take.
        if self.controller.is_none() {
            // Free endpoint → become controller (nothing to displace).
            self.become_controller(sub, by, from_seq);
            return SubscribeOutcome::Controller;
        }
        let same_identity = self.controller_by() == by.as_deref();
        if same_identity {
            // Same operator (or both local) re-serving — silent re-take. This is
            // the gate-#7 path: a successor re-taking the slot after a brain
            // restart NEVER fires Displaced.
            self.become_controller(sub, by, from_seq);
            return SubscribeOutcome::Controller;
        }
        if by.is_none() {
            // The LOCAL brain re-attaching while a REMOTE controls — never steal;
            // fall back to a silent viewer (gate #7 for the local-resume path).
            self.add_viewer(sub, from_seq);
            self.stamp_viewer_count();
            return SubscribeOutcome::Viewer;
        }
        if self.controller_by().is_none() {
            // A remote takes an UNDRIVEN session (only the local spawner held the
            // slot) — silent control, no loud displace (there is no remote driver
            // to notify).
            self.become_controller(sub, by, from_seq);
            return SubscribeOutcome::Controller;
        }
        // A DIFFERENT remote controls it.
        match intent {
            AttachIntent::Take => {
                // The ONLY loud-displace path: notify the incumbent, then take.
                // W1: route the Displaced notice through the OLD controller's
                // writer thread (best-effort, off the dispatch thread) — the
                // incumbent we're kicking may be exactly the wedged one, so an
                // inline write here would block the new attacher's dispatch.
                if let Some(old) = &self.controller {
                    let frame = displaced_envelope(self.session_id, by.as_deref().unwrap_or(""));
                    let _ = old.tx.try_send(CtrlMsg::Control(frame));
                }
                self.become_controller(sub, by, from_seq);
                SubscribeOutcome::TookControl
            }
            _ => SubscribeOutcome::BusyControlled {
                by: self.controller_by().unwrap_or_default().to_string(),
            },
        }
    }

    /// Update the stored PTY size and push a `size` frame to every viewer (the
    /// letterbox feed). Called on a controller resize. Viewer pushes are
    /// non-blocking with eviction, like [`OutputLog::append`].
    fn set_size_and_notify(&mut self, rows: u16, cols: u16) {
        self.size = (rows, cols);
        if self.viewers.is_empty() {
            return;
        }


resolve_subscribe runs under the OutputLog lock (it's `&mut self` on the log); the SUBSCRIBE dispatch must `log.lock()` to call it — the same lock `append` (drain) takes for every flood-output frame. std Mutex is unfair on Linux, and a quiet box floods MORE output → drain hammers the lock → subscribe starves. That's **suspect b, mechanistically supported by the code, and it explains worse-on-quiet**. Finding the exact call sites to probe.


55:    size_envelope, subscribed_envelope, BrainRestarted, EndpointInputReq,
63:    KIND_NET_STREAM_OPEN, KIND_NET_STREAM_OPENED, KIND_NET_STREAM_SEND, KIND_NET_STREAM_SUBSCRIBE,
65:    KIND_SPAWNED, KIND_SUBSCRIBE, KIND_UNSUBSCRIBE,
445:    fn resolve_subscribe(
1233:            .map(|h| h.log.lock().unwrap().next_seq)
1262:                KIND_SUBSCRIBE => match self.dispatch_subscribe(env, &send) {
1336:                                let log = log.lock().unwrap();
1357:                KIND_NET_STREAM_SUBSCRIBE => match self.dispatch_net_stream_subscribe(env, &send) {
1377:                h.log.lock().unwrap().detach_if(&send);
1438:        log.lock()
1584:        let outcome = log.lock().unwrap().resolve_subscribe(
1590:        send_frame(send, &subscribed_envelope(req.session_id, outcome));
1613:        log.lock().unwrap().detach_if(send);
1797:        if !log.lock().unwrap().is_controller(send) {
1806:        log.lock().unwrap().set_size_and_notify(req.rows, req.cols);


Found the subscribe lock site: `dispatch_subscribe` @ broker.rs:1584 `log.lock().unwrap().resolve_subscribe(...)` → reply at 1590. The lock-wait there is the smoking gun. Now the holder side — finding the drain's `append` call site.


Grep

\.append\(|fn .*drain|drain thread|log\.lock\(\).unwrap\(\)\.append|let job =


192:/// The session's single drain thread is the only producer ([`OutputLog::append`]).
249:    /// the cursor moved off the drain thread with the controller delivery itself.
294:    /// so a backed-up controller socket parked the drain thread WITH THE LOCK HELD
299:    /// single drain thread.
413:    /// live queue. The drain thread fans live frames in via `try_send`.
612:/// thread; the drain thread's next `try_send` then sees `Disconnected` and
613:/// evicts the row. The drain thread itself never blocks on this socket.
1451:                let job = log_drain.lock().unwrap().append(chunk);
2216:    /// own queue, never the drain thread / controller / child.
2280:        let job = ControllerJob {
2291:        let job = ControllerJob {
2307:        let job = ControllerJob {
2442:    fn input_enqueue_drops_and_stamps_on_full_then_heals_on_drain() {
2582:    fn drain_output_seqs(client: &mut Stream, n: usize) -> Vec<u64> {
2632:            log.append(b"AAAA").is_none(),
2636:            log.append(b"BBBB").is_none(),


Both contention sites located on the **same OutputLog mutex**: holder = `log_drain.lock().append(chunk)` @ broker.rs:1451 (drain thread, per flood-output chunk); waiter = `log.lock().resolve_subscribe()` @ broker.rs:1584 (subscribe). Reading both windows to write precise probes.


1440	            .become_controller(Arc::clone(send), None, 0);
1441
1442	        // Output drain → append under the log lock (fast: ring + viewer fan-out),
1443	        // then deliver to the controller OFF the lock with a bounded deadline
1444	        // (W1 / REQ-HAZARD-INJECT-CONTROL-COEXIST). The controller write is no
1445	        // longer inline under the log lock, so a backed-up controller can never
1446	        // wedge the session; a fully-stalled controller is detached after the
1447	        // deadline (bounded wedge, never permanent).
1448	        let log_drain = Arc::clone(&log);
1449	        let drain = session
1450	            .drain(move |chunk| {
1451	                let job = log_drain.lock().unwrap().append(chunk);
1452	                if let Some(job) = job {
1453	                    if let Err(epoch) = job.deliver() {
1454	                        log_drain.lock().unwrap().mark_controller_gone(epoch);
1455	                    }
1456	                }
1457	            })
1458	            .map_err(|e| format!("drain failed: {e}"))?;
1459

            .become_controller(Arc::clone(send), None, 0);

        // Output drain → append under the log lock (fast: ring + viewer fan-out),
        // then deliver to the controller OFF the lock with a bounded deadline
        // (W1 / REQ-HAZARD-INJECT-CONTROL-COEXIST). The controller write is no
        // longer inline under the log lock, so a backed-up controller can never
        // wedge the session; a fully-stalled controller is detached after the
        // deadline (bounded wedge, never permanent).
        let log_drain = Arc::clone(&log);
        let drain = session
            .drain(move |chunk| {
                let job = log_drain.lock().unwrap().append(chunk);
                if let Some(job) = job {
                    if let Err(epoch) = job.deliver() {
                        log_drain.lock().unwrap().mark_controller_gone(epoch);
                    }
                }
            })
            .map_err(|e| format!("drain failed: {e}"))?;


1575	        // non-silent. The rc-side status-gate (a) + first-event backstop (b) cover
1576	        // the rest.
1577	        let log = {
1578	            let sessions = self.sessions.lock().unwrap();
1579	            let h = sessions
1580	                .get(&req.session_id)
1581	                .ok_or_else(|| format!("no such session {}", req.session_id))?;
1582	            Arc::clone(&h.log)
1583	        };
1584	        let outcome = log.lock().unwrap().resolve_subscribe(
1585	            Arc::clone(send),
1586	            req.from_seq,
1587	            req.intent,
1588	            req.by,
1589	        );
1590	        send_frame(send, &subscribed_envelope(req.session_id, outcome));
1591	        Ok(req.session_id)
1592	    }
1593
1594	    /// Release this connection's controller/viewer role on a session
1595	    /// (REQ-RCVIEW-1): clears the controller slot iff this is the controller
1596	    /// (re-stamping `driven_by`) and removes any viewer rows it owns

        // non-silent. The rc-side status-gate (a) + first-event backstop (b) cover
        // the rest.
        let log = {
            let sessions = self.sessions.lock().unwrap();
            let h = sessions
                .get(&req.session_id)
                .ok_or_else(|| format!("no such session {}", req.session_id))?;
            Arc::clone(&h.log)
        };
        let outcome = log.lock().unwrap().resolve_subscribe(
            Arc::clone(send),
            req.from_seq,
            req.intent,
            req.by,
        );
        send_frame(send, &subscribed_envelope(req.session_id, outcome));
        Ok(req.session_id)
    }

    /// Release this connection's controller/viewer role on a session
    /// (REQ-RCVIEW-1): clears the controller slot iff this is the controller
    /// (re-stamping `driven_by`) and removes any viewer rows it owns


Both probe sites mapped precisely. Mechanism (suspect b) is code-grounded. Writing the instrumentation (gated behind `SPT_WEDGE_TRACE`, off by default, no behavior change) to push to a throwaway branch doyle can run on kitsubito. Checking atomic imports first.


<owl_messages>
<owl_message from="doyle" priority="high">ALL 3 CONFIRMED REPRO IN ISOLATION on kitsubito (real CI box, ZERO load, 9-filtered-out single-test runs): a_journaled subscribed=false pumped=5217; p0 subscribed=false pumped=6009 backpressured=true; g2 op_flushed=false. Definitively REAL PRODUCT BUGS, not load/parallelism. Evidence complete.

Gravity head-fake noted, no worries. PIVOT ACCEPTED: you author env-gated instrumentation (SPT_WEDGE_TRACE=1, monotonic micros, off-by-default, never ships) at the 4 targets; I run on kitsubito + send traces; you name the suspect+location. Builds are WARM on kitsubito (~2min/test) so the relay loop is fast enough — DON'T request your own kitsubito access yet; we only escalate to a tight direct loop if round-1 traces aren't conclusive. Write the instrumentation now.

PARALLEL: while you write it, I'm taking a FASTER first cut — a live broker thread-stack dump DURING the 30s wedge window (gdb thread apply all bt on the broker pid mid-subscribe-wait). That may localize the parked thread WITHOUT a rebuild. I'll send you what the dispatch/subscribe thread is parked on (futex on the OutputLog mutex = your suspect b; a write() syscall = different). Push your instrumentation regardless as the precise confirm. -doyle</owl_message>
</owl_messages>

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36:use std::sync::atomic::{AtomicBool, AtomicU64, Ordering};
38:use std::sync::{Arc, Mutex};
211:    /// thread (`Arc<AtomicU64>`). Bumped on every [`become_controller`]; the
218:    controller_epoch: Arc<AtomicU64>,
247:    /// W1: now an `Arc<AtomicU64>` shared with the controller's writer thread,
250:    delivered_through: Arc<AtomicU64>,
277:            controller_epoch: Arc::new(AtomicU64::new(0)),
282:            delivered_through: Arc::new(AtomicU64::new(0)),
691:fn advance_delivered(dt: &AtomicU64, seq: u64) {
721:    delivered_through: Arc<AtomicU64>,
723:    controller_epoch: Arc<AtomicU64>,
799:    faulted: Arc<AtomicBool>,
867:    backpressure: AtomicBool,
884:            backpressure: AtomicBool::new(false),
985:    faulted: Arc<AtomicBool>,

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doyle (high-priority) acked: **all 3 confirmed REAL PRODUCT BUGS** — isolated, zero-load on kitsubito (a_journaled subscribed=false pumped=5217; p0 subscribed=false pumped=6009 backpressured=true; g2 op_flushed=false). Pivot accepted: I author env-gated instrumentation now, he runs on kitsubito (warm ~2min/test), I name suspect+location. He's taking a parallel gdb thread-stack cut. Imports confirmed (AtomicU64/Ordering/Arc/Mutex present).