Multi-device terminal size follows the last-typed device (D178) #99
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opened 2026-10-08 11:54:21 +00:00 by kayg
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When a session is visible on several devices of one account, the device that typed last decides the PTY size automatically; other devices render it scaled to fit, without reflow on their side. Needs the shim/server to track the last input source per session and resize on change, with hysteresis so alternating keystrokes don't thrash. Measure resize-to-repaint latency. Codex job.
Codex job multi-size launched from dev (D183).
Starting #99 on branch multi-size, base
f27b3fe7a4. Read the issue history, repository contract, D11/D74/D121/D124/D128/D170/D178/D183 and wire/shim contracts. Tracing the terminal input, resize, snapshot and renderer paths before implementation.Finding: the shim resizes immediately for every newly accepted writer switch (
crates/infraternal-shim/src/session.rs:587-593), so alternating devices can repeatedly resize the PTY. The browser also reflows its local terminal grid on each container fit (apps/tracer/src/terminal.ts:1043-1057), and every local grid resize emits a Resize frame (:280-285). The client currently has no authoritative-size handling.After schema commit 1d26e9d, scripts/verify fast stopped at the loopback latency self-test: configured 300 ms RTT, p50=395.25 ms, p99=424.21 ms. A separate 31-sample retry measured p50=357.79 ms, p99=841.16 ms while local load average was 20.53/21.99/16.92 on 8 CPUs. The focused codec tests remain green (Rust 7/7, TypeScript 5/5); I will rerun the fast gate without concurrent builds.
Starting #107 on canvas-streams, base
f27b3fe7a4. Read full #107/#89/#98/#99 history, repository contract and main D11/D63/D128/D130/D170/D178/D183. Additive proposal: wire capability bit 4 (16), Visibility 0x18 (u8 live=0/marker=1/thumbnail=2), Changed 0x19 (u64 since_seq, u64 head_seq), Thumbnail 0x1A (u64 seq, u8 flags, bounded visible VT repaint). Shim capability bit 4, Visibility 0x1E, Changed 0x1F, Thumbnail 0x22; leaves 0x17 and shim bit 3/0x1D for #99 size. Marker cadence >=250ms, thumbnail >=500ms, event-driven idle with no periodic wakeups. Returning live always snapshots at captured head then raw bytes from that boundary. No new engine; thumbnail uses existing bounded visible repaint. Contract and codec first, then shim, relay, browser multiplex client, real-engine/browser measurements. No push/deploy.Gate finding after 1d26e9d: Clippy found the new Frame variant missing from
crates/infraternal-protocol/examples/stream_oracle.rs; I added the TerminalSize field mapping. The workspace test run also hit the known worktree target-path assumption:initial_attach_requires_explicit_credit_before_replaycould not createtarget/ac493752because this worktree has CARGO_TARGET_DIR under scratch. Created the ignored worktree-localtargetsymlink to that scratch target, as the earlier #98 gate note recommends. The gate is continuing through the static build; I will amend and rerun.Finding:
scripts/verify fastreaches clippy and static builds, butcrates/infraternal/tests/vt_credit.rsfails att1-gate-approximate-1; its stderr saysdetached initial producer must finish. At capture, the local 8-vCPU host load was 33.96/26.46/26.66. I’m isolating this timing-sensitive existing probe before treating the gate as a code regression.Pre-fix evidence:
scripts/verify-agent-writer-size.pyagainst the current real infraternal binary failed at line 87 after B pasted input: viewer 1 did not retain A's 24x80 geometry during the 500 ms window. The former shim behavior resized immediately; this probe also covers both viewers, owner notifications, repaint snapshots, and exact-once markers.Post-commit
scripts/verify fastreached clippy and stopped on three new lints:crates/infraternal-shim/src/frame.rs:47(doc markdown),crates/infraternal-shim/src/session.rs:593(120-line handler), andcrates/infraternal-server/src/websocket.rs:673(manual let-else). The RTT self-test passed at p50 303.10 ms / p99 306.27 ms. Fixing these before rerunning the gate.The post-commit fast gate's real-binary
agent_daemonregression failed atscripts/verify-agent.py:62: the oracle expectedterminal.exitedto be the final event, but negotiatedterminal.sizeupdates now arrive before exit. Theterminal.sizeevent is additive; I’m updating the event assertion in the agent integration slice.The rerun passed
agent_daemonafter the event-oracle fix, thenagent_queuesfailed atscripts/verify-agent-queues.py:55with(4, 51): the saturation oracle reads the additive leg-A Event frame (0x33,terminal.size) as an unexpected stream-close frame. I’m teaching the queue oracle to validate and skip size events while preserving its input/output assertions.The next fast-gate run passed
agent_daemonandagent_queues;agent_reviewexposed additive-event assumptions inverify-agent-attach-credit.py(unfunded attach saw0x33),verify-agent-multi.py(stream 2 saw0x33),verify-agent-isolation.py(stream 3 saw a validterminal.sizeJSON event), and the last-typist oracle (stream 2 saw0x33). I’m updating those frame consumers. The separate tiny-credit snapshot assertion also failed (verify-agent-snapshot.py:48); I’m checking whether geometry recovery changed its snapshot count/cursor invariant.With the event-aware harnesses, 5/6
agent_reviewtests pass. The two-writer real-PTY regression now reaches B's paste but fails atscripts/verify-agent-writer-size.py:87: stream 1's pending output does not contain the old 24x80 grid, so the expected hysteresis window is not yet demonstrated. I’m collecting the exact output and resize timing before changing behavior.Resolved the last-typist probe false positive: Bash echoed
B_PENDINGfrom the typed command, so the oracle stopped beforestty sizeran. Formatting the output markers from separateprintfarguments makes them absent from echoed input.python3 scripts/verify-agent-writer-size.py --binary target/debug/infraternalnow passes: resize-only kept owner A, paste selected B, 24x80 held through the 500 ms window, one resize to 40x120, both viewers repainted, and all markers appeared once. The isolated 12 MiB snapshot probe also passed all three one-byte pauses and ring-wrap recovery.The latest fast-gate run passed
agent_daemon,agent_queues, and all sixagent_reviewprobes.agent_sessionsthen failed atcrates/infraternal/tests/agent_sessions.rs:38withexpected raw shim output: the direct shim observer does not yet skip the additive localSizeStateframe. I’m updating that observer to validate the frame and continue to raw output.The
agent_sessionsfailure was caused by the new unconditional post-resize Snapshot request: the legacy direct reader receivedError(2, "Ghostty state is not representable by the bounded faithful Snapshot painter")after a geometry change. Resize-triggered repaint is now limited to peers that negotiatedTERMINAL_SIZE; legacy peers retain their prior recovery path.cargo test -p infraternal --test agent_sessionsnow passes (1/1).The current fast gate's
vt_creditfailure is a protocol-oracle assumption, not a timing failure:target/review-vt3-fixes/t1-gate-approximate-1.stderr.logshowsverify-vt-credit.py:41rejected any event before forwarding, while stdout confirms producer completion in 309.7 ms. The only new event isterminal.size; I’m narrowing the oracle to reject premature approximation notices while allowing size state.Shim step complete at
424dae401c66d21dd14d1382f8f8a93ae79c55ae. Negotiated peers now arbitrate geometry on fresh input with a 500 ms quiet window; legacy resize behavior is retained, and resize-triggered snapshots go only to size-capable peers. Real-PTY test: paste selected writer B; 24x80 held through the window; one resize to 40x120; both views received state/repaint; markers exactly once.scripts/verify fast: Rust gates fmt/VT fmt/clippy/test/cargo-deny/static builds all PASS; TypeScript build PASS; 20 tracer tests and 7 protocol tests PASS. 300 ms RTT self-test p50 319.22 ms / p99 325.44 ms. Static binaries: x86_64 15,975,760 bytes; aarch64 13,438,864 bytes.Server step complete at
c008e3e. The server parses and validatesterminal.sizeper session, marks the owning attachment, and sends capability-gatedTerminalSize; regression confirms both devices receive 120x40 with one owner and an unrelated session receives nothing.Post-commit
scripts/verify fastRust summary (verbatim):+---------------------------+--------------+
| Rust gate | Result |
+---------------------------+--------------+
| fmt | PASS |
| VT native fmt | PASS |
| clippy | PASS |
| test | PASS |
| cargo-deny | PASS |
| static builds | PASS |
+---------------------------+--------------+
TypeScript: 20 tracer tests PASS; 7 protocol tests PASS; stream differential 141 streams / 11,913 schedules / zero divergences. Static binaries: x86_64 15,975,760 bytes; aarch64 13,438,864 bytes. RTT self-test: 300 ms profile, p50 301.07 ms / p99 336.99 ms.
Performance host check is currently unavailable:
ssh -o BatchMode=yes -o StrictHostKeyChecking=yes infraternal-dev 'hostname; uptime'returnedssh: connect to host infraternal-dev port 22: Connection refused. No alternate host or SSH key change was attempted. I’m continuing implementation and will retry the approved host later; the required load/latency benchmark still needs a reachable infraternal-dev.Shim contract step complete at
e15acca. The table now placesSizeStatewith frame0x1D, documents bit 3, first-selected-writer ownership, accepted-input transfers, resize-only reports, 500 ms hysteresis, and size-capable repaint behavior.Post-commit
scripts/verify fastsummary (verbatim):+---------------------------+--------------+
| Rust gate | Result |
+---------------------------+--------------+
| fmt | PASS |
| VT native fmt | PASS |
| clippy | PASS |
| test | PASS |
| cargo-deny | PASS |
| static builds | PASS |
+---------------------------+--------------+
TypeScript: 20 tracer tests PASS; 7 protocol tests PASS; 141 streams / 11,913 schedules / zero differential divergences. Static binaries: x86_64 15,975,760 bytes; aarch64 13,438,864 bytes. RTT self-test: p50 310.37 ms / p99 310.93 ms.
Post-agent commit gate finding:
vt_credittimed out before the fixture's initial 12 MiB PTY output completed (target/review-vt3-fixes/t1-gate-approximate-1.stdout.log, assertiondetached initial producer must finish). Host load at failure was 19.78/25.87/23.61 on 8 cores. I am rerunning this case under the required CPU-weighted scope to distinguish load sensitivity from regression.Client stream relay is committed as
659203c214bc24c9df303b6e97599e2a29228dc8. It negotiates terminal-size support, converts the size frame toterminal.size, and tested SizeState ordering before InputState plus the two-device PTY/snapshot marker probe. Direct real PTY evidence: resize-only kept A as owner; B paste selected B; 24x80 remained through the 500 ms window then resized once to 40x120; both viewers received size and repaint; markers were exact once. Targetedvt_creditrerun passed in 14.37 s after one load-sensitive timeout at host load 19.78/25.87/23.61.Post-commit
scripts/verify fastpassed. RTT self-test: p50 308.84 ms, p99 310.59 ms at configured 300 ms ±30 ms.+---------------------------+--------------+
| Rust gate | Result |
+---------------------------+--------------+
| fmt | PASS |
| VT native fmt | PASS |
| clippy | PASS |
| test | PASS |
| cargo-deny | PASS |
| static builds | PASS |
+---------------------------+--------------+
Shared prediction overlay scaling is committed as
5ade5a01c71cf59a7014f03cc241c3d39831b41c. The overlay now follows the renderer canvas transform and origin, and scale changes invalidate its cached geometry.scripts/verify fastpassed; production JavaScript transfer is 850,992 identity / 259,440 gzip / 214,011 brotli bytes (budgets 850,000? see gate baseline: identity is not budgeted; gzip 307,200, brotli 256,000).RTT self-test: p50 312.21 ms, p99 313.01 ms at configured 300 ms ±30 ms.
+---------------------------+--------------+
| Rust gate | Result |
+---------------------------+--------------+
| fmt | PASS |
| VT native fmt | PASS |
| clippy | PASS |
| test | PASS |
| cargo-deny | PASS |
| static builds | PASS |
+---------------------------+--------------+
Correction to the bundle note above: the gate budgets gzip at 307,200 bytes and brotli at 256,000 bytes; identity size is reported without a budget.
Benchmark host retry:
ssh -o StrictHostKeyChecking=yes -o BatchMode=yes infraternal-dev uptimeagain returnedssh: connect to host infraternal-dev port 22: Connection refused. I am continuing the client work and will retry the required measurements on infraternal-dev before finishing; no other host will be used.Predictive echo ownership gating is committed as
fd91317f8e676a45eeb08a53175200a753488dc3.scripts/verify fastpassed. JavaScript transfer: 851,606 identity / 259,559 gzip / 213,882 brotli bytes (gzip budget 307,200; brotli budget 256,000).RTT self-test: p50 319.70 ms, p99 322.68 ms at configured 300 ms ±30 ms.
+---------------------------+--------------+
| Rust gate | Result |
+---------------------------+--------------+
| fmt | PASS |
| VT native fmt | PASS |
| clippy | PASS |
| test | PASS |
| cargo-deny | PASS |
| static builds | PASS |
+---------------------------+--------------+
Browser finding: the first production cell-metrics run had one
socket hang upon the test-double/__mock/text-outputrequest in desktop DPR 2; the later mobile DPR 3 and desktop DPR 1 cases passed. The host reported load 15.58/13.56/19.27 on 8 cores. I am rerunning DPR 2 alone to check whether this was load-sensitive test transport noise.DPR 2 follow-up: the isolated production renderer run passed all cell and box-join assertions. Canvas backing size was 2720x1584 for 170x44 cells at 2x DPR; redraw p50/p95 was 1.10/3.40 ms and the 10 MB write took 1,038.9 ms. Host load was 11.14/12.82/18.47 on 8 cores. This resolves the single socket hang-up as a transient run failure; DPR 3 and DPR 1 passed in that run as well.
Finding: the post-159bec8 fast gate fails in the Tracer compiler:
src/terminal.ts:1146:20 TS2532 Object is possibly 'undefined'atthis.terminal.renderer.getCanvas(). The renderer is optional in the pinned Terminal type;updateCanvasScalemust tolerate it being unavailable. I’m fixing the optional renderer access before the next gate.Step: guarded the optional Ghostty renderer lookup during authoritative grid fitting; commit b7a619503ce28140e6a21700c6e925208f3ea504. This addresses the preceding TS2532 at
terminal.ts:1146; the post-commitscripts/verify fastexited 0. RTT self-test: configured 300 ±30 ms, p50 312.41 ms, p99 328.05 ms. TypeScript protocol tests: 7 passed; Tracer tests: 20 passed. Rust gate:+---------------------------+--------------+
| Rust gate | Result |
+---------------------------+--------------+
| fmt | PASS |
| VT native fmt | PASS |
| clippy | PASS |
| test | PASS |
| cargo-deny | PASS |
| static builds | PASS |
+---------------------------+--------------+
Bundle transfer: 854,466 identity / 260,222 gzip / 214,398 brotli bytes (budgets 307,200 / 256,000 compressed).
Step: added and committed the production-build Playwright regression as d36e23ee72598ba77556c894778692efb4a7573a. The post-commit
scripts/verify fastexited 0. Tracer tests: 20 passed / 376 assertions; TypeScript protocol: 7 passed / 35,816 assertions; Rust shim: 62 passed, 12 ignored. RTT self-test at configured 300 ±30 ms: p50 304.38 ms, p99 309.64 ms. Bundle transfer: 854,466 identity / 260,222 gzip / 214,398 brotli bytes (compressed budgets 307,200 / 256,000). Rust gate:+---------------------------+--------------+
| Rust gate | Result |
+---------------------------+--------------+
| fmt | PASS |
| VT native fmt | PASS |
| clippy | PASS |
| test | PASS |
| cargo-deny | PASS |
| static builds | PASS |
+---------------------------+--------------+
Browser step:
TRACER_TEST_PORT=4299 bun x playwright test test/terminal-size.spec.tspassed 1/1 in 1.3 minutes against the production bundle. It checked the fixed 160x60 grid across a viewport change, scale/letterbox centering, non-owner prediction disabled, and prediction/cursor alignment after input. Screenshot artifact:apps/tracer/test-results/terminal-size-the-authorit-878b9-ip-changes-only-after-input/authoritative-size-fit.png. Current head: d36e23ee72598ba77556c894778692efb4a7573a.Benchmark: real PTY, 30 alternating device switches and 30 single-device inputs,
INFRATERAL_TEST_RTT=300(±30 ms jitter), oninfraternal-devinsidesystemd-run --user --scope -p CPUWeight=10000. Host load average at start/end: 26.57/26.76/21.97 and 21.88/25.54/21.76. Input → final resized-size state on both viewers: p50 802.32 ms / p95 835.30 / p99 885.82. Input → first non-empty repaint snapshot received at both viewers: p50 803.32 / p95 835.59 / p99 885.88 ms. Per-viewer repaint p50: stream 1 803.16 ms, stream 2 803.32 ms. Single attached device input → PTY-write Ack: p50 307.78 / p95 326.09 / p99 350.29 ms; the 30 steady inputs emitted no size-state transition. This shows the 500 ms settle window only on switches; repaint timings are snapshot-frame receipt on both streams, with browser rendering separately covered by the 1/1 Playwright spec. Screenshot:apps/tracer/test-results/terminal-size-the-authorit-878b9-ip-changes-only-after-input/authoritative-size-fit.png.Client step: commit 159bec821284610eebe12feee0e81f1e2b7e3c54 added Hello capability negotiation, authoritative-grid rendering without local reflow, and input-only ownership prediction. Its first fast gate exposed TS2532 at the optional Ghostty renderer lookup; commit b7a619503ce28140e6a21700c6e925208f3ea504 guards that lifecycle, and the subsequent fast gate passed. The production browser regression committed as d36e23ee72598ba77556c894778692efb4a7573a then passed 1/1 on port 4299.
History correction: to keep every visible commit green, the unpushed local client history was rewritten. The former 159bec8 client change and b7a6195 renderer guard are now one commit,
75f591afe4; the code and working tree are unchanged. Its post-commitscripts/verify fastexited 0. RTT self-test at 300 ±30 ms: p50 294.20 ms, p99 298.99 ms. Tracer tests 20/20 (376 assertions), TypeScript protocol 7/7 (35,816 assertions); JS transfer 854,466 identity / 260,222 gzip / 214,398 brotli.+---------------------------+--------------+
| Rust gate | Result |
+---------------------------+--------------+
| fmt | PASS |
| VT native fmt | PASS |
| clippy | PASS |
| test | PASS |
| cargo-deny | PASS |
| static builds | PASS |
+---------------------------+--------------+
Finding: the post-737ae84 fast gate failed in
infraternal/tests/vt_credit.rs::unaffordable_repaints_park_until_sufficient_credit; the bounded probe timed out att1-gate-approximate-1after 10.50 s. The same test passed in the preceding fast gate. Host load was 45.05/40.21/28.87 oninfraternal-dev(8 cores). I’m rerunning the isolated case, then the full post-commit gate.Test step: the browser regression is now commit
737ae848a5(the earlier d36e23e hash was superseded by the local history rewrite). Its first post-commit fast run hit the load-sensitivevt_creditprobe; isolated rerun passed 1/1 in 20.73 s, and the complete post-commit retry exited 0. Retry RTT self-test: configured 300 ±30 ms, p50 284.11 ms, p99 319.53 ms. Tracer tests: 20 passed / 376 assertions. TypeScript protocol: 7 passed / 35,816 assertions; 141 streams and 11,913 schedules, zero divergences. JS transfer: 854,466 identity / 260,222 gzip / 214,398 brotli bytes.+---------------------------+--------------+
| Rust gate | Result |
+---------------------------+--------------+
| fmt | PASS |
| VT native fmt | PASS |
| clippy | PASS |
| test | PASS |
| cargo-deny | PASS |
| static builds | PASS |
+---------------------------+--------------+
The Playwright spec passed 1/1 on
TRACER_TEST_PORT=4299against the production bundle. Screenshot artifact:apps/tracer/test-results/terminal-size-the-authorit-878b9-ip-changes-only-after-input/authoritative-size-fit.png. The 30-sample PTY switch and single-device measurements remain as reported above; no source changed during the history correction.Parser fuzz step: the first wire fuzz build could not find the repository-pinned Zig toolchain. Installed Zig 0.15.2 under job scratch after verifying the official archive SHA-256; no repository files or dependencies changed. Ran 10,000 iterations per existing target with the new TerminalSize 0x17 wire seed and SizeState 0x1d shim seed:
wire_frame_decodecov=659/features=744/max RSS 52 MiB;wire_stream_decodecov=932/features=2,321/max RSS 101 MiB;shim_frame_decodecov=631/features=987/max RSS 64 MiB. All completed without crashes or assertion failures.Finished #99 at head
737ae848a59097344126b4ee3a1aaf210cd1fad5on branchmulti-size; worktree is clean and job scratch was removed. No push or deploy.Self-review: fresh accepted key/paste bytes change the writer; resize-only reports, focus and viewing do not. Alternating writers restart the 500 ms settle window; the PTY resizes after settlement and both attached streams receive bounded, session-bound size state and repaint snapshots. Input offsets, partial-write acknowledgements, duplicate trimming and snapshot replay remain covered by the existing real-PTY writer tests. Client/server/shim bounds and exact frame lengths/flags were checked; legacy clients without the Hello capability do not receive the new wire frame. Renderer fitting keeps the authoritative grid fixed across viewport changes and shares scale/origin with predictive echo. UID/session authorization and output-credit paths are unchanged.
Production browser spec: 1/1 passed with
TRACER_TEST_PORT=4299. Screenshot:apps/tracer/test-results/terminal-size-the-authorit-878b9-ip-changes-only-after-input/authoritative-size-fit.png(1280×720).Real-PTY performance, 30 switches and 30 single-device inputs, on
infraternal-devundersystemd-run --user --scope -p CPUWeight=10000, RTT 300 ±30 ms. Load average start/end: 26.57/26.76/21.97 and 21.88/25.54/21.76. Input → resized-size state at both viewers: p50 802.32 / p95 835.30 / p99 885.82 ms. Input → first non-empty repaint snapshot received at both viewers: p50 803.32 / p95 835.59 / p99 885.88 ms. Per-viewer repaint p50: 803.16 / 803.32 ms. One-device input → PTY-write Ack: p50 307.78 / p95 326.09 / p99 350.29 ms, with no steady-state size-state transitions. Snapshot receipt is the transport-level repaint measure; the browser spec exercises the production renderer separately.Parser fuzzing: 10,000 runs each, no crash/assertion failures: wire raw cov=659/features=744/max RSS 52 MiB; wire stream cov=932/features=2,321/max RSS 101 MiB; shim frame including SizeState 0x1d cov=631/features=987/max RSS 64 MiB.
Final post-commit
scripts/verify fastexited 0 (the first run's credit probe timed out under load; isolated rerun and complete retry passed). RTT self-test 300 ±30 ms: p50 284.11 ms, p99 319.53 ms. Tracer tests 20/20 (376 assertions); TypeScript protocol 7/7 (35,816 assertions), 141 streams and 11,913 schedules with zero divergences. JS transfer: 854,466 identity / 260,222 gzip / 214,398 brotli bytes.+---------------------------+--------------+
| Rust gate | Result |
+---------------------------+--------------+
| fmt | PASS |
| VT native fmt | PASS |
| clippy | PASS |
| test | PASS |
| cargo-deny | PASS |
| static builds | PASS |
+---------------------------+--------------+
Independent review started on branch
review-multi-size, at target head737ae848a59097344126b4ee3a1aaf210cd1fad5; merge base withdevisf27b3fe7a4dcfb3e268bdee90405bf1f1d8a0ce9. Read #99 and parent #89 histories, repository contract, D178/D183 and touched wire/shim contracts. Testing the ownership protocol, resize relay, bounded snapshots, and authoritative renderer behavior. No implementation changes.Finding MS-1 (P2), committed as
c9a235b: a same-grid remote owner handoff received during local optimistic ownership is ignored, and the client never reapplies it when optimism expires. The production browser regression failed on port 4399 atapps/tracer/test/terminal-size.spec.ts:97: after a successfulowns_size:falseevent and 1,200 ms,predictiveEcho().ownsSizewas still true. No implementation changes.Performance remeasurement on infraternal-dev is blocked:
ssh -o BatchMode=yes -o StrictHostKeyChecking=yes -o ConnectTimeout=5 infraternal-dev 'hostname; uptime'returnedssh: connect to host infraternal-dev port 22: Connection refused. No alternate host was used and no SSH host key was accepted or changed. Correctness review continues.Finding MS-2 (P2), committed as
873cc30: a selected writer's geometry is stored on itsPeer. If that peer disconnects during the 500 ms settle window,runremoves it before the settle lookup and leaves the PTY at the prior grid. The new Rust regression failed on the pinned engine: expected(120, 40, 1200, 800), got(80, 24, 0, 0)after B's accepted input, detach, and expiry. No implementation changes.Independent review complete — verdict: merge after fixes.
Counts: P0 0, P1 0, P2 2, P3 0.
Evidence is committed on local branch
review-multi-sizeat873cc30(test-only commitsc9a235band873cc30). The job branch/worktree was not modified.ownsSize=false, receivedtrue.settled_owner_resize_survives_owner_peer_disconnectfailed: expected(120, 40, 1200, 800), got(80, 24, 0, 0).wire_frame_decode10,000 runs (cov 644, ft 728, RSS 52 MB);wire_stream_decode10,000 (cov 921, ft 2,330, RSS 108 MB);shim_frame_decode10,000 (cov 606, ft 1,077, RSS 74 MB). No crashes.infraternal-devreturnedConnection refused; the perf VM was not used.scripts/verify fastwas run on job head737ae848a59097344126b4ee3a1aaf210cd1fad5withTRACER_TEST_PORT=4399. It exited 1 at the latency-proxy self-test before Rust or TypeScript checks. Load average at the attempt was 17.81, 20.17, 22.25. Output verbatim:Follow-up to the final record: MS-1 now samples the measured RTT and waits
RTT + 850 ms, 250 ms beyond the500 ms + RTT + 100 msoptimism bound. The production browser test still fails at line 100: expectedownsSize=false, receivedtrue. This timing-robust test-only follow-up is commit10ba60b; current review branch head is10ba60b. The priorscripts/verify fastoutput remains the result on job head737ae848a59097344126b4ee3a1aaf210cd1fad5.Break-it review (
10ba60b) found MS-1 (stale ownsSize after same-grid handoff) and MS-2 (geometry lost when the writer leaves before settle). Relaunched multi-size run 2 (Luna Max: scoped repair against failing tests) to fix both.Starting continuation on branch
multi-sizeat base737ae848a59097344126b4ee3a1aaf210cd1fad5. Read the complete #99 history, review findings, parent #89 history, repository contract, D11/D121/D124/D128/D170/D178/D183, and wire/shim contracts. I will cherry-pick the review test commits, confirm MS-1 and MS-2 fail on this branch, then fix them in separate commits.MS-1 reproduced:
TRACER_TEST_PORT=4398 bun x playwright test test/terminal-size.spec.tsfails atapps/tracer/test/terminal-size.spec.ts:100, expectedownsSize=false, receivedtrueafter the measured optimism bound. Root cause is that a same-grid false owner state is retained as authoritative but never reconciled after local optimism expires.MS-2 reproduced:
cargo test -p infraternal-shim --lib settled_owner_resize_survives_owner_peer_disconnect -- --nocapturefails atcrates/infraternal-shim/tests/unit/session_resize.rs:132: expected(120, 40, 1200, 800), got(80, 24, 0, 0). The shim removes the peer before looking up the pending owner.Policy for MS-2: if a pending size owner disconnects, ownership returns to the most recently active still-attached size-capable writer; if no such prior owner remains, it selects the earliest attached size-capable peer. The shim reconciles to that peer’s latest geometry, so an attached session is not left at a geometry no attached device reports. The regression will assert that A remains owner at 80x24 after B detaches. Test-only review commits are
a3aa8a5,fcb83a3,85575c6; production files remain unchanged.MS-2 policy regression now fails on the intended assertion:
pending_owner_disconnect_returns_size_to_previous_attached_writerreportsactive_writer=Some(2)instead ofSome(1)after B disconnects (crates/infraternal-shim/tests/unit/session_resize.rs:153). A reports 100x30 while B’s 500 ms handoff is pending; after B disconnects, the PTY must reconcile to A’s latest attached geometry. Implementing bounded owner history and settle cancellation now.MS2 fixed in commit
1cb65b8: when the active size writer disconnects, ownership returns to the most recent still-attached writer (or earliest attached size-capable writer if none in history remain), and its latest geometry is applied immediately. This keeps the PTY at an attached device's size. The focused regression passes; cargo fmt --all --check and Clippy pass.The requested handoff remeasurement is currently blocked: strict, batch-mode SSH to infraternal-dev returned
ssh: connect to host infraternal-dev port 22: Connection refusedon 2026-10-08. I did not change or accept any host key. I will retry after the build gates.verify fastat1cb65b8: fmt PASS, VT native fmt PASS, Clippy PASS, cargo-deny PASS, static builds PASS (x86_64 musl 15,982,400 bytes; aarch64 musl 13,441,144 bytes). RTT self-test PASS:METRIC name=network_rtt_selftest configured_rtt_ms=300 jitter_ms=30 loss=unsupported transport=tcp-stream n=3 p50_ms=304.63 p99_ms=304.82 result=PASS. Test phase: 99 passed, 2 failed, 9 ignored;review3_busy_recoveryclosed its websocket unexpectedly andreview4_open_reply_and_revocation_preserve_authoritytimed out. Gate table reportedtest FAIL (101); host load was 23–48 during the run. Retrying after focused checks.Committed the terminal-size spec race fix in
66e8db7. The spec now captures the visible prediction glyph and cursor geometry in one browser task;TRACER_TEST_PORT=4424 bun x playwright test test/terminal-size.spec.tspassed (1/1, 22.1 s). Earlier separate reads could straddle the mock echo and hide the cursor.All parser fuzz targets completed 10,000 runs successfully using the seeded corpora in task scratch:
shim_frame_decodecov=653/ft=1155, peak reported RSS 76 MiB;wire_frame_decodecov=648/ft=711, RSS 52 MiB;wire_stream_decodecov=920/ft=2289, RSS 106 MiB. The MS2 detach regression also passes (1/1). Fuzzer-generated corpus stayed outside the worktree.The
verify fastretry at1cb65b8exposed a real-PTY regression inlast_typist_selects_its_own_real_pty_dimensions(scripts/verify-agent-writer-size.py:85): during B's settle window, output contained no old24 80, and size-state events already reported owner stream 2 at 120x40. I am tracing the resize deadline/application path and will reproduce the focused test before changing code.The same
agent_reviewtest executable from the full gate passes when filtered tolast_typist_selects_its_own_real_pty_dimensions(1/1, 6.29 s). In the full workspace run, this test ran alongside other real-PTY probes;repeated_tiny_credit_pauses_preserve_shell_progressexceeded 60 s. This points to suite contention delaying shell execution across the 500 ms window; no resize-code change is justified by the isolated run. I will retryverify fastafter contention eases.verify fastwithRUST_TEST_THREADS=1at66e8db7: RTT PASS (p50 301.59 ms, p99 318.39 ms), fmt/VT fmt/Clippy PASS, 100 server tests passed and 1 failed (9 ignored), cargo-deny and both static builds PASS. Failure:auth::tests::socket_tests::recovery_subscription_updates_every_signed_in_socketclosed its websocket unexpectedly; running only that test from the same binary also failed (8.35 s). The size-related real-PTY test passed in the serialized suite. I am waiting for shared host load to fall before a clean retry; no server auth code changed.verify fastwithRUST_TEST_THREADS=1at66e8db7: RTT PASS (METRIC name=network_rtt_selftest configured_rtt_ms=300 jitter_ms=30 loss=unsupported transport=tcp-stream n=3 p50_ms=314.23 p99_ms=344.86 result=PASS); fmt, VT native fmt, Clippy, cargo-deny and both static builds PASS. Rust tests: 98 passed, 3 failed, 9 ignored. The size-owner real-PTY test passed; unrelatedreview3_busy_logout,review3_busy_recovery, andreview3_pending_routes_and_idle_expiry_recoveryeach closed a websocket. I will check these filters alone.Isolated auth follow-up:
review3_busy_logoutpasses (0.96 s) andreview3_busy_recoverypasses (4.05 s);review3_pending_routes_and_idle_expiry_recoverystill fails alone after 37.94 s withserver closed websocket unexpectedly: None. No auth source files differ from base in this branch. I am checking the failing path before the next full gate attempt.Finished the run-2 fixes on branch
multi-size, HEAD66e8db71e7ab1fdce87040348ae4a7217c08d924. MS1 reconciliation, MS2 detach fallback, and the browser geometry sampling fix are committed. Focused terminal-size browser spec passed 1/1 on port 4424; the focused detach regression passed 1/1; the real-PTY handoff test passed in the serialized gate. All three parser fuzzers passed 10,000 runs: shim cov=653/ft=1155, 76 MiB RSS; wire frame cov=648/ft=711, 52 MiB; wire stream cov=920/ft=2289, 106 MiB.The final
scripts/verify fastretry usedRUST_TEST_THREADS=1. RTT passed at p50 314.23 ms / p99 344.86 ms; fmt, VT native fmt, Clippy, cargo-deny, and static builds passed. Rust tests had 98 passed, 3 failed, 9 ignored. Failures were unrelatedreview3_busy_logout,review3_busy_recovery, andreview3_pending_routes_and_idle_expiry_recovery; the size tests passed. The first two auth filters passed alone, while the pending-routes auth test still failed alone. No auth source files differ from base.Final Rust gate summary (verbatim):
The requested remeasurement could not run: strict SSH to
infraternal-devreturnedssh: connect to host infraternal-dev port 22: Connection refused; no host key was accepted or changed. Run-1 measurements remain the available baseline: 30-device switches, input-to-resize-state p50/p95/p99 802.32/835.30/885.82 ms; input-to-first repaint on both viewers 803.32/835.59/885.88 ms; one-device input-to-PTY-write ACK 307.78/326.09/350.29 ms. Run-1 load average was 26.57/26.76/21.97 at start and 21.88/25.54/21.76 at finish.Independent review resumed on
review-multi-sizeat target head66e8db71e7ab1fdce87040348ae4a7217c08d924; merge base withdevisf27b3fe7a4dcfb3e268bdee90405bf1f1d8a0ce9. Read the complete #99 and parent #89 histories,CLAUDE.md,DECISIONS.md,docs/ARCHITECTURE.md,docs/PROCESS.md, D11/D74/D121/D124/D128/D170/D178/D183, and the touched wire/shim contracts. The prior review’s MS-1/MS-2 tests are now covered by job fixes; independently rechecking them and probing related ownership, size, and resume paths. No implementation changes.Recheck step complete at target head
66e8db71e7ab1fdce87040348ae4a7217c08d924: prior MS-1 production browser regression passes 1/1 onTRACER_TEST_PORT=4899; prior MS-2 real-PTY fallback regression passes 1/1 with the pinned engine. I appended this resolution to the review findings log. Testing a separate coalesced two-writer handoff race next.Finding MS-3 (P3): two fresh inputs ready in one shim poll can change ownership B→A→B while the final owner and PTY grid stay unchanged. The end-of-poll equality check then queues no
SizeState; A has optimistically enabled ownership and receives no immediate authority update. This violates D183's owner-change publication rule. Evidence:session::resize_checks::owner_round_trip_within_one_poll_is_published_to_every_readerfails atcrates/infraternal-shim/tests/unit/session_resize.rs:260; expected both size-state markers, found neither (0 passed, 1 failed, 75 filtered). The test-only evidence is ready to commit; no implementation files changed.MS-3 test evidence is committed on local branch
review-multi-sizeasd955c1133429f4575970aab78cdd67cd5f37b4a6(one test-only commit). The job branch remains unchanged. The targeted regression still fails as expected;cargo fmt --all --checkandgit diff --checkpass.Fuzz step complete at review head
d955c11334. Seededshim_frame_decode,wire_frame_decode, andwire_stream_decodewith the new SizeState/TerminalSize vectors and ran 10,000 cases each. Results: shim cov=625/ft=1121, peak RSS 80 MiB; wire frame cov=649/ft=714, 51 MiB; wire stream cov=936/ft=2412, 112 MiB. All three completed without crashes.MS-4 (P3):
session.rs:603-618appliessize_changedto the full(cols, rows, px_w, px_h)tuple and requests a repaint Snapshot even when the 80x24 grid is unchanged. The real agent/PTY test failed twice on a valid 1200→1201 px-only change; both runs delivered a 1,937-byte Snapshot at sequence 627. At 32 viewers that is 61,984 redundant repaint bytes per update. Load averages were 26.88/27.92/27.99 and 21.57/26.49/27.51. Contract context:contracts/shim.md:247-249describes these Snapshots at grid changes. Failing test committed onreview-multi-sizeas2d57ed4(test: catch pixel-only repaint fanout (#99)).D170 remeasurement complete at review head
2d57ed4. On local infraternal-dev (x86_64, 8 cores), undersystemd-run --user --scope -p CPUWeight=10000, RTT 300 ms ±30 ms: 30 alternating two-writer switches to final size state plus nonempty repaint on both viewers measured p50/p95/p99 817.36/875.22/911.43 ms; 30 same-owner input-to-PTY ACKs measured 306.29/334.49/348.23 ms, with no size-state transitions. Load average start 22.41/26.04/27.31, end 21.60/25.34/27.02. 30 snapshots reached each viewer.MS-5 (P3):
Peer::resizerolls a refused native resize back to configured 80x24 at 0x0 pixels, buthandleupdatespty_sizeonly on a successful resize. The focused real allocator refusal test failed with tracked size(80,24,1200,800)versus rollback(80,24,0,0), so the loop sees no delta to publish. Test committed onreview-multi-sizeasd1d55b6(test: expose stale size after resize refusal (#99)).Independent review complete at target
66e8db71e7ab1fdce87040348ae4a7217c08d924.Verdict: merge after fixes. Current findings: 0 P0, 0 P1, 0 P2, 3 P3 (MS-3 same-poll owner round trip, MS-4 pixel-only Snapshot fanout, MS-5 stale size after native resize refusal). Earlier MS-1/MS-2 are fixed at the target and are not counted. Review-only tests are committed on
review-multi-sizethroughd1d55b6a6d34867c3e50b495086f5be294d9ad01; the implementation branch was not changed.Exact-head
scripts/verify fastoutput:The Rust suite failed in
vt_credit::unaffordable_repaints_park_until_sufficient_credit(credit probe failed: t1-gate-approximate-16384); TypeScript was not reached. Static sizes passed: x86_64 15,982,400 bytes (limit 16,404,816), aarch64 13,441,144 bytes (limit 13,817,816). The credit probe also failed on merge basef27b3fe7a4dcfb3e268bdee90405bf1f1d8a0ce9at host load 68.58/62.21/49.33, so it is not counted as a multi-size finding.Run 3 starting on
multi-sizeat base66e8db71e7ab1fdce87040348ae4a7217c08d924. Read the complete #99 and parent #89 histories, the repo contract and process, D11/D121/D124/D128/D170/D178/D183, and the wire/shim contracts. I will cherry-pick each round 2 review regression, confirm it fails, then fix MS-3, MS-4, and MS-5 in separate green commits.MS-3 reproduced on
multi-sizeat66e8db71e7ab1fdce87040348ae4a7217c08d924with the review test applied:cargo test -p infraternal-shim --lib owner_round_trip_within_one_poll_is_published_to_every_reader -- --nocapturefailed (0 passed, 1 failed, 75 filtered) atcrates/infraternal-shim/tests/unit/session_resize.rs:260. The assertion reports that the A→B→A owner round trip left both readers without a pending SizeState. The owner comparison at the end of the poll sees equal initial and final values and loses the intermediate changes.Gate note during MS-3: after correcting the ignored worktree
target/symlink, an isolatedcargo test -p infraternal --test agent_review repeated_tiny_credit_pauses_preserve_shell_progress -- --nocapturefailed in 95.95 s atscripts/verify-agent-snapshot.py:17withAssertionError: shell blocked: .../completed-0. The full suite had also seen a cursor mismatch in this same credit probe. This test exercises tiny-credit PTY progress; the MS-3 changes only record size-owner transitions. I am keeping this as an unrelated gate failure and will report the next exact gate output.MS-3 fixed in
9d832e4: the shim tracks per-poll owner transitions and coalesces one authoritativeSizeStatefor every selected reader, including A→B→A. The regression passed 1/1; Clippy and formatting passed.The post-change fast gate reached all stages but failed only
agent_review::repeated_tiny_credit_pauses_preserve_shell_progress, outside the size-owner path. It failed in the full run with a cursor mismatch; an isolated rerun failed because the PTY shell marker missed its 90 s deadline. Static binaries passed: x86_64 15,982,352 B; aarch64 13,441,168 B. RTT self-test:Rust gate summary (verbatim):
MS-4 reproduced on the MS-3 head with the review integration test:
cargo test -p infraternal --test agent_review pixel_only_resize_does_not_snapshot_live_reader -- --nocapturefailed atcrates/infraternal/tests/agent_review.rs:55. A 1200→1201 px update on an unchanged 80×24 grid emitted one 1,937-byte Snapshot at sequence 627. At 32 viewers this is 61,984 repaint bytes per update. The PTY'sterminal.sizenotice already carries the updated pixel dimensions; repaint should be gated by a cell-grid change.MS-4 fixed in
407b1fb. The real-agent/PTY regression passed 1/1: an 80×24 grid with pixel dimensions changed 1200→1201, theterminal.sizenotice arrived, and no Snapshot was sent. At 32 viewers, Snapshot payload falls from 61,984 B per fanout (1,937 B × 32) to 0 B. The remaining notices are 17 B per shim peer (544 B total) and 14 B per viewer WebSocket frame (448 B total, including the TerminalSize frame, mux id and WebSocket header); 992 B across both path segments, excluding TCP/IP.Full
scripts/verify fastRTT output (verbatim):The gate’s only failing test was the load-sensitive
vt_credit::unaffordable_repaints_park_until_sufficient_creditatt1-gate-faithful-16384(18.24 s). The isolated rerun passed (1/1, 12.55 s). All other tests, Clippy, formatting, cargo-deny and static builds passed. Binary sizes: x86_64 15,982,416 B; aarch64 13,441,168 B. Rust gate summary (verbatim):Host: infraternal-dev (this 8-core machine), CPUWeight=10000; load average at gate completion 9.25/11.80/22.18.
MS-5 reproduced on the MS-4 head:
cargo test -p infraternal-shim --lib native_resize_refusal_tracks_rollback_pixel_dimensions -- --nocapturefailed atcrates/infraternal-shim/tests/unit/session_resize.rs:234. The real allocator refusal rolled the PTY andPeer.sizeback to(80, 24, 0, 0), whilepty_sizeremained(80, 24, 1200, 800).Peer::resizeupdates the rollback state and returnsfalse; its callers only copied the tracked tuple ontrue.MS-5 fixed in
09477db6. Resize callers now track the PTY's actual geometry after refusal rollback while preserving legacy writer promotion behavior. Focused tests passed: four shim resize checks (one ignored session probe) and the real-PTY pixel-only resize regression. Fast gate passed; final summary and load details will follow after cleanup.Run 3 complete. HEAD
09477db62f. Atomic fixes:9d832e41(MS-3),407b1fb0(MS-4),09477db6(MS-5). Worktree clean; scratch target removed.scripts/verify fastoutput:METRIC name=network_rtt_selftest configured_rtt_ms=300 jitter_ms=30 loss=unsupported transport=tcp-stream n=3 p50_ms=294.65 p99_ms=319.55 result=PASS
+---------------------------+--------------+
| Rust gate | Result |
+---------------------------+--------------+
| fmt | PASS |
| VT native fmt | PASS |
| clippy | PASS |
| test | PASS |
| cargo-deny | PASS |
| static builds | PASS |
+---------------------------+--------------+
TypeScript protocol tests: 7 pass, 0 fail; 35,816 expect() calls; 141 streams / 11,913 schedules / zero divergences.
Static binaries: x86_64 15,982,416 B; aarch64 13,441,168 B.
Fast gate ran on infraternal-dev (this 8-core machine) under CPUWeight=10000. Post-gate load average sample: 8.88 / 9.11 / 15.13.
Independent review resumed at target head
09477db62f; merge base with dev isf27b3fe7a4. Continuing the prior review branch and rechecking its MS-3/MS-4/MS-5 regressions against the final fixes, then probing protocol, ownership, resize, and resume paths. No implementation changes.Review evidence is on local branch
review-multi-size, based at target09477db62f; merge base withdevisf27b3fe7a4. Earlier review evidence remains preserved on local archive branches.MS-R1 (P2), reproduced and committed on
review-multi-sizeas4f76cebbe46bd7a6a0fbb534318f8ae6c377145b.The production browser received a newer
TerminalSize(ownsSize=false)391.9 ms after its input was accepted and Acked (RTT 334.6 ms), butpredictiveEcho().ownsSizeremained true for the following 100 ms. The code retains that owner through its 500 ms + RTT + 100 ms optimism window, leaving about 543 ms of stale ownership after the newer notice. The reproducer orders the notice after Ack on the same socket. Failing test:a received owner handoff supersedes local optimism after input is accepted, atapps/tracer/test/terminal-size.spec.ts:161.Implementation location:
apps/tracer/src/terminal.ts:989-998.Review progress: test helper typing correction is committed as
82b8fc20425ab1b49181c1dad88cb8a898890589; the optional one-shot frame is removed withdeleteforexactOptionalPropertyTypes.With
RUST_TEST_THREADS=8, the fast gate passed all Rust tests, cargo-deny and both static builds; TypeScript caught the helper typing error above. The next gate attempt stopped before build/tests because the 300 ms RTT self-test measured p50 366.87 ms / p99 384.63 ms (host load 13.37 / 11.98 / 24.31). Retrying after a quieter window.Fast gate completed on local review branch
review-multi-sizeat82b8fc20425ab1b49181c1dad88cb8a898890589, with the implementation identical to target09477db62f90adcba911ed7cc59b32a89e932d92. Run insystemd-run --user --scope -p CPUWeight=10000,CARGO_BUILD_JOBS=2,RUST_TEST_THREADS=8; final host load average was 25.30 / 22.81 / 23.96.RTT self-test output:
METRIC name=network_rtt_selftest configured_rtt_ms=300 jitter_ms=30 loss=unsupported transport=tcp-stream n=3 p50_ms=314.11 p99_ms=327.79 result=PASSThe Rust suite reported 101 passed / 0 failed / 9 ignored for infraternal-server and 65 passed / 0 failed / 12 ignored for infraternal-shim. Both static artifacts passed: x86_64 15,982,416 bytes (max 16,404,816) and aarch64 13,441,168 bytes (max 13,817,816). TypeScript protocol output:
7 pass,0 fail,35816 expect() calls.32-viewer real-PTY remeasurement completed under
systemd-run --user --scope -p CPUWeight=10000, configured RTT 300 ms ±30 ms. A scratch copy ofscripts/verify-agent-multi-scale.pywas used because the unmodified script aborts on the newly addedterminal.sizeEvent (stream 2, frame 0x33) instead of consuming it.METRIC name=keystroke_echo_confirmed_32_viewers source=real-agent-pty n=6400 p50_ms=305.22 p99_ms=328.06 budget_ms=334.00 result=PASSMETRIC name=terminal_size_events_32_viewers events=13750 muxed_bytes=192183332 writers/viewers x 200 inputs: PASS; 6400 inputs, 19200 unique accounted bytes/viewer, 614400 delivered bytes; elapsed=69.400s; daemon RSS=5312 KiB; shim RSS=5920 KiB; machine=x86_64; cores=8; load=(17.5, 18.3857421875, 21.83544921875)MS-R2 (P2): the tracer test double accepts later Resize frames but only sends its first TerminalSize. Focused production Playwright test on infraternal-dev (ports 5071/5072) requested 205x56 and remained at 150x34 through the 5 s timeout. The full latency browser suite had 10 renderer fixture cases and snapshot-resume stop at 150x34. This confirms a test-double gap; it does not establish a production server resize failure. Failing test committed on review-multi-size as aa4ae894d906e9759e17b1552d041a4bbafab726.
D170 scale probe complete on infraternal-dev under CPUWeight=10000: two real daemons, 100 PTY sessions each (200 attached). 200 pixel-only resizes produced 200 size notices and 0 new snapshots; 31,400 muxed bytes over 83.203 s at simulated RTT 300 ms. Combined daemon RSS 11,500 KiB; shim RSS sum 1,153,096 KiB (5,765 KiB/session). x86_64, 8 cores, load 7.76 / 8.48 / 10.54. Scratch harness only; no implementation edits.
Bounded decoder fuzzing completed on scratch corpora seeded with shim SizeState 0x1d raw/framed/double encodings and the golden wire TerminalSize vector. No crashes: shim_frame_decode 105,913 executions/31 s (3,416/s, 360 new units, 273 MiB peak RSS); wire_frame_decode 624,771/31 s (20,153/s, 673 new units, 176 MiB); wire_stream_decode 27,644/38 s (727/s, 463 new units, 181 MiB). Nightly 2026-09-29 and Zig 0.15.2. Corpora/artifacts stayed under scratch.
Throughput comparison is not a confirmed target regression. Isolated target (
5311) measured off/on medians 2.98/2.80 MB/s (-6.30%, 5% budget). Detacheddev(5313) measured 2.42/2.14 MB/s (-11.43%, FAIL) while host load rose from 6.84/8.96/10.54 to 26.81/15.87/12.87 with another latency/browser job active. The target run also overlapped browser work and was not load-matched. Full tracer-browser phase reported 65 passed, 26 skipped, 17 failed in 16.4 min; failures include the two recorded findings, throughput, snapshot-resume/terminal-resume tests, and access-screen p99s 1851.40/1917.80 ms against 1000 ms at load 8.79/11.79/16.31.MS-R3 confirmed (P2): the browser test types
b, drops its Ack after acceptance, reconnects, and paintsab; ownership is true, but the next inputpremains absent from prediction (Expected "p", received ""). An equivalent isolated test passes on detached dev atf27b3fe. Target diagnostic state wasreason=awaiting-output. Regression test committed asc12c8688; no implementation changes.Review complete. Verdict: merge after fixes. Findings: 0 P0, 0 P1, 3 P2, 0 P3.
4f76cebbe46bd7a6a0fbb534318f8ae6c377145b.aa4ae894d906e9759e17b1552d041a4bbafab726.abis painted and ownership is true, but the nextpremains unpredicted. Target fails; the equivalent isolated test passes on detached dev. Test committed asc12c868861c643a95ae12589a6a19e7314c9d8b5.Review branch
review-multi-sizeHEAD:c12c868861c643a95ae12589a6a19e7314c9d8b5. Reviewed job head:09477db62f90adcba911ed7cc59b32a89e932d92.Final
scripts/verify fastexited 0. Gate output:The first full gate attempt had one transient
agent_queuesterminal-open refusal. The isolated retry passed (1 passed, 36.90 s), and the final full rerun passed that row (1 passed, 34.76 s) and exited 0. No implementation changes; no push or deploy.Supplement to the final review comment: I also ran
scripts/verify faston the exact reviewed job head09477db62f90adcba911ed7cc59b32a89e932d92in a detached scratch checkout; final invocation exited 0. The initial detached invocation lacked make/perl in the systemd PATH; the next had a missing repository-local target path for a test fixture and the musl Zig wrapper. After providing the Nix toolchain and the expected target symlink to scratch, the exact-head rerun passed.Verbatim gate output:
Run 4 starting on
multi-sizeat09477db62f90adcba911ed7cc59b32a89e932d92. Read all #99 and parent #89 comments, the repo contract/process, D11/D121/D124/D128/D170/D178/D183, and wire/shim contracts. Mergingdevat459070fe3b75548382e8e19fba86af20439cf607first, then cherry-picking the round 3 review tests and fixing regressions one atomic commit each. No push or deploy.Merge integration gate finding: on the merged tree,
scripts/verify fastpassed the RTT self-test (p50 304.44 ms, p99 316.16 ms), fmt, VT fmt, Clippy, and 6/7agent_reviewprobes.repeated_tiny_credit_pauses_preserve_shell_progressfailed atscripts/verify-agent-snapshot.py:52because the test expected no new mux Events during an underfunded repaint. The daemon publishes the independentterminal.sizenotice on this path; the cursor and Snapshot assertions passed. I will allow only that size notice while retaining the no-recovery-notice assertion. Static builds and TypeScript had not completed in this attempt.Finding during dev merge: the credit probe rejected the independent
terminal.sizeevent as a premature approximation while repaint credit was exhausted. Updatedscripts/verify-vt-credit.pyto allow only size notices at that checkpoint and retain the no-snapshot/no-approximation assertion. Isolatedunaffordable_repaints_park_until_sufficient_creditnow passes (1/1, 20.06 s).Merged dev at
4e7b4ff5. Fast gate passed: RTT self-test p50 312.94 ms / p99 317.79 ms; fmt, VT fmt, Clippy, Rust tests (including server 101/101 and shim 65/65), cargo-deny, static builds, Tracer checks, and TypeScript protocol tests passed. The only merge adjustment was teaching credit probes to allow independent terminal.size notices while still rejecting blocked-output approximations. Next: apply round-three review tests and reproduce them.MS-R3: reproduced on pre-merge
09477db6with the cherry-picked test: expected pending prediction"p", received"". The same test passes on the merged branch (full terminal-size spec, 4th case). The dev merge’s shared connection/stream handling resolves this regression, so no separate code change was needed. Scratch pre-merge worktree is under the run4 cache and will be removed after comparison work.MS-R1 reproduced on the merged branch with the review browser spec: after accepted input and the newer
ownsSize=falsenotice,predictiveEcho().ownsSizestayedtruethrough the 100 ms assertion (terminal-size.spec.ts:161). I’ll make every received authoritative notice clear local optimism and apply its ownership immediately.MS-R2 reproduced in the same browser spec: after a later viewport resize requesting 205x56 cells, the mock renderer remained at 150x34 (terminal-size.spec.ts:214). The test double suppresses all grid notices after its first Resize; I’ll align it with the server’s authoritative resize response.
MS-R1 fixed in
b92dcbd2: an authoritativeterminal.sizenotice now clears local optimism and immediately updates predictive ownership. The focused browser test passes (1/1; notice delay 339.4 ms at RTT 334.6 ms). Post-commitscripts/verify fastretry passed: RTT self-test p50 295.57 ms / p99 301.77 ms; Rust gate fmt/VT fmt/Clippy/tests/cargo-deny/static builds all PASS; TypeScript protocol tests 7/7. The first gate attempt only lacked the expectedtarget/fixture path; it passed after restoring the symlink to the scratch target.MS-R2 fixed in
3ef9ddc6: the terminal mock now emits a size notice for each accepted owner Resize. The focused later-grid test passes (1/1), and the full terminal-size spec passes (4/4). Post-commitscripts/verify fastpassed: RTT self-test p50 304.36 ms / p99 310.69 ms; fmt, VT fmt, Clippy, Rust tests, cargo-deny, static builds all PASS; TypeScript protocol tests 7/7.Preliminary latency attempts are not a valid head/dev comparison because host load rose during the run. Head wrapper: native phase load 7.59/11.27/13.19; same-session flood p99 was 403.85 ms confirmed echo and 475.32 ms PTY echo; its later 323-test browser tail was stopped. Paired retry: head RTT self-test failed under load 15.73/13.04/12.48 (p99 363.29 ms); dev began at 17.49/13.50/12.64 and ended 30.12/19.71/15.02, with same-session PTY echo p99 404.80 ms. Keeping these as noisy attempts, not regression evidence; waiting to rerun the pair under quiet load.
High-load back-to-back PTY-only probes also fail the flood budgets and are not accepted as the quiet-window comparison. Both started at load 28.51/23.16/18.51 (head) and 32.37/25.42/19.77 (dev); load rose to 32.37/25.42/19.77 after head and was 30.07/26.80/20.86 after dev. Head same-session pty-echo p99=419.65 ms (baseline 329.49; growth 90.17); dev p99=402.35 ms (baseline 336.75; growth 65.61). Both exceed the 334 ms / 16.67 ms budgets, and the host load is too high to infer a regression. Re-running when the machine is quiet.
Code fixes complete at
3ef9ddc6fd. MS-R3 reproduces on pre-merge09477db6and passes after the dev merge; MS-R1 is fixed inb92dcbd2; MS-R2 is fixed in3ef9ddc6. The terminal-size browser spec passes 4/4.Post-commit
scripts/verify fastoutput:METRIC name=network_rtt_selftest configured_rtt_ms=300 jitter_ms=30 loss=unsupported transport=tcp-stream n=3 p50_ms=304.36 p99_ms=310.69 result=PASS
+---------------------------+--------------+
| Rust gate | Result |
+---------------------------+--------------+
| fmt | PASS |
| VT native fmt | PASS |
| clippy | PASS |
| test | PASS |
| cargo-deny | PASS |
| static builds | PASS |
+---------------------------+--------------+
7 pass
0 fail
35816 expect() calls
Ran 7 tests across 2 files. [3.56s]
The requested quiet-load latency comparison remains pending: infraternal-dev stayed above 30 load on 8 cores during repeated attempts, reaching 44.31. The high-load pair exceeded same-session flood budgets on both branches (head PTY p99 419.65 ms; dev 402.35 ms), so it does not establish a regression result. Need a quiet interval on infraternal-dev (load below 8 and stable) to finish that comparison; no code changes remain.
Independent review run 5 started on branch
review-multi-sizeat target head3ef9ddc6fda968a491044a37947b03f49ac343fb; merge base withdevis459070fe3b75548382e8e19fba86af20439cf607. Read the complete #99 and parent #89 comment histories, the required repo docs, the decisions cited by the job, the job report, and the touched wire/shim contracts. Rechecking the final fixes and probing protocol ownership, resize, resume, and scale behavior. Implementation branch remains unchanged.MS-R4 (P2), test-only evidence committed on
review-multi-sizeas4f4e706d900a569f496fbfbdacdae3899645b9ea.A shim peer without
TERMINAL_SIZEcan accept fresh input while a size-capable peer owns the same geometry. The legacy path updatesactive_writerbut does not advance the size-owner revision; because geometry is unchanged, noSizeStateis queued. The size-capable reader keeps stale ownership and predictive echo eligibility, contrary to D74/D183.Failing test:
session::resize_checks::legacy_writer_handoff_with_same_geometry_updates_size_capable_readers. On target3ef9ddc6fda968a491044a37947b03f49ac343fb, the focused command failed with0 passed, 1 failed, 77 filtered; assertion path:crates/infraternal-shim/tests/unit/session_resize.rs:380. No implementation changes.MS-R5 — P2: fixed-grid viewport recenter leaves predictive overlay at its old offset. Production Playwright test
prediction overlay remains aligned when a fixed terminal recenters without rescalingfails atapps/tracer/test/terminal-size.spec.ts:332: after 1280×1200 → 1280×1500, renderer canvas Y=263.219 and prediction canvas Y=113.219 (150px gap), with unchanged transform and 160×60 grid. Test committed as5f4b2d33d7; screenshot is in its Playwright attachment.MS-R6 — P2: detach fallback ignores a legacy active writer. With size-capable writer 1 attached at 80×24, legacy writer 2 reports 120×40, types accepted input, then disconnects. The shim leaves
active_writer=Some(2)and PTY geometry(120,40,1200,800)instead of restoring writer 1. Focused testsession::resize_checks::detaching_legacy_active_writer_restores_attached_size_owner_geometryfails atcrates/infraternal-shim/tests/unit/session_resize.rs:490; committed asec0680163f.Parser fuzz step completed on target
3ef9ddc6fd; review branch headec0680163f. Seeded scratch corpora with valid, truncated, trailing, boundary and invalid-flagSizeState/TerminalSizeframes. Nightly ASan campaigns (-max_total_time=20seach) completed with no crashes:shim_frame_decode460,467 inputs,wire_frame_decode3,513,743,wire_stream_decode174,158. Logs:/home/kayg/.cache/codex-scratch/multi-size-review/fuzz-{shim,wire-frame,wire-stream}.log.Production browser step completed on review head
ec0680163f. The target's four terminal-size Playwright tests passed 4/4 in 39.0s using unique port 4977; authoritative grid fit, handoff, later resize, and reconnect coverage passed. Owner handoff notice metric: 402.5ms at measured RTT 334.8ms. The additional R5 recenter regression separately fails with a 150px renderer/overlay gap (posted above).Fast gate completed on exact job head
3ef9ddc6fda968a491044a37947b03f49ac343fb; review branch head isec0680163f5fb13286814110d0c65ae7a84d50f6. No implementation changes. The first gate attempt stopped before tests because the three-sample RTT self-test measured p50 540.07ms / p99 642.06ms; rerun insystemd-run --user --scope -p CPUWeight=10000passed at p50 307.83ms / p99 308.02ms (configured 300ms).scripts/verify fastgate summary, verbatim:Full captured output:
/home/kayg/.cache/codex-scratch/multi-size-review/verify-fast-r3.log.D170 scale step completed on target head
3ef9ddc6fda968a491044a37947b03f49ac343fb.METRIC name=terminal_size_pixel_resize_200_sessions sessions=200 attached=200 pixel_resizes=200 size_notices=200 snapshot_delta=0 muxed_bytes=33000 elapsed_s=102.729 daemon_rss_kib=11464 shim_rss_sum_kib=1147344 machine=x86_64 cores=8 load=(15.5166015625, 20.12548828125, 20.849609375) rtt_ms=300/home/kayg/.cache/codex-scratch/multi-size-review/scale-200.logIndependent review complete.
Verdict: merge after fixes. Confirmed findings: 0 P0, 0 P1, 3 P2, 0 P3. Reviewed target
3ef9ddc6fda968a491044a37947b03f49ac343fbagainst merge base459070fe3b75548382e8e19fba86af20439cf607. Evidence branchreview-multi-sizeis atec0680163f5fb13286814110d0c65ae7a84d50f6.The three P2 failures are recorded in
findings.mdand committed as failing tests: MS-R4 legacy writer handoff at unchanged geometry; MS-R5 predictive overlay offset after vertical recenter; MS-R6 detaching the legacy active writer leaves departed geometry applied. Commits:4f4e706d,5f4b2d33,ec068016.D170 scale run: 200/200 sessions attached, 200 pixel resizes and size notices, zero snapshot delta, 33,000 muxed bytes, 102.729s; daemon RSS 11,464 KiB, shims 1,147,344 KiB total; machine x86_64/8 cores, load start 13.63/21.84/21.43 and finish 15.52/20.13/20.85.
scripts/verify latencyfinished 269 passed, 26 skipped, 28 failed at load 28.00/23.16/21.10. Bulk output delta was -4.43% against a -5% budget (pass). The target prediction and same-session flood metrics exceeded budgets, but the dev baseline also exceeded the prediction budget in repeated runs and the gate ran under high host load; I did not attribute a performance regression to this change. Full log:/home/kayg/.cache/codex-scratch/multi-size-review/verify-latency.log.scripts/verify faston target head3ef9ddc6fda968a491044a37947b03f49ac343fb:METRIC name=network_rtt_selftest configured_rtt_ms=300 jitter_ms=30 loss=unsupported transport=tcp-stream n=3 p50_ms=307.83 p99_ms=308.02 result=PASS
| Rust gate | Result |
+---------------------------+--------------+
| fmt | PASS |
| VT native fmt | PASS |
| clippy | PASS |
| test | PASS |
| cargo-deny | PASS |
| static builds | PASS |
+---------------------------+--------------+
54 pass
0 fail
9930 expect() calls
Ran 54 tests across 12 files. [302.00ms]
7 pass
0 fail
35816 expect() calls
Ran 7 tests across 2 files. [2.77s]
kayg referenced this issue2026-10-28 17:53:56 +00:00