Commit Graph
3 Commits
Author SHA1 Message Date
dtzp555-maxGitHubtaodengClaude <claude-opus-4-8> <noreply@anthropic.com>
63c2de7128 fix(tui): clamp stream holdback to safe floor (A1) + record cc_entrypoint before honesty gates (A3) (#164)
Two OCP-internal correctness fixes on the TUI streaming/observation path, surfaced
by an independent (Codex) re-review. Neither touches the cli.js wire.

A1 — OCP_TUI_STREAM_HOLDBACK now has an enforced floor (DEFAULT_HOLDBACK_CHARS=100).
The C-1 auth-banner gate's first-message guarantee rests on the holdback being at
least the default banner detector's 100-char reach. The env var's own doc said
"Only raise it", but the code trusted the operator: a sub-floor value (e.g. 50) or a
NaN typo ("unlimited") let the first chars of a real auth banner stream to the client
before the end-of-turn detector could classify the whole message and reject the turn.
resolveStreamHoldback() clamps UP to the floor and returns {value, clamped}; server.mjs
emits a boot WARNING when it had to clamp. Default (unset) is unchanged and unflagged.

A3 — recordTuiEntrypoint() now runs the moment runTuiTurn() returns, BEFORE the honesty
gates (wall-clock truncation / auth banner / stream divergence) that throw. The entrypoint
(cli vs sdk-cli) is which billing pool the turn consumed; a turn that then fails a gate
STILL spent that pool, and those failed turns are exactly the ones most likely to signal a
silent degrade to the metered Agent SDK pool. The old placement recorded only on the success
path, so /health's lastEntrypoint and entrypointMismatches were blind to every failed turn —
the billing-drift signal missed the cases it most needed to catch. recordModelSuccess stays
on the success path. The catch block does not record the entrypoint, so there is no double
count; a client-disconnect (TuiAbortError) throws from inside runTuiTurn before the destructure,
so no phantom entrypoint is recorded.

ALIGNMENT.md Rule 2 (No Invention): no cli.js citation applies. cli.js does not perform either
operation — both are proxy-internal. A1 hardens OCP's own SSE holdback (a safety mechanism on
the Class B.1 OpenAI-compat streaming surface; wire format authority is the OpenAI spec via
ADR 0006). A3 reorders when OCP records its own /health observability counters (Class B.2,
grandfathered under ADR 0006; the TUI spawn authority is ADR 0007). No endpoint, header,
request field, or response field is added or altered; the bytes to and from cli.js are
byte-identical. This is observation/safety-layer hardening, not extension.

Tests: +5 mutation-proven unit tests for resolveStreamHoldback (deleting the floor clamp
fails 3 of them). Full suite 325 passed / 0 failed (was 320). A3 is a server.mjs control-flow
reorder; server.mjs is not imported by the test suite, so A3 is verified by reviewer inspection
of the diff, stated honestly here rather than vouched for by a test.

Version bump + CHANGELOG deliberately omitted: this is a fix PR, consolidated into a later
chore(release) PR per the repo's #148/#149/#150 -> #151 (v3.21.1) convention.

Co-authored-by: dtzp555 <dtzp555@gmail.com>
Co-authored-by: Claude <claude-opus-4-8> <noreply@anthropic.com>
2026-07-15 21:40:13 +10:00
a90f830b5d fix(tui): a null message_id on the first hook fire must not disarm the F1 guard (#160)
Residual found by the independent reviewer's second pass, by PROBING the fixed code rather
than reading it — the F1 fix was correct but its ARMING could be skipped entirely.

TuiDeltaAssembler.messageId was initialized to `null`. A first MessageDisplay payload carrying
message_id:null therefore compared EQUAL to the sentinel, registered no boundary, and left
`messages` at 0. When the real boundary then arrived, `else if (this.messages > 1)` evaluated
1 > 1 === false, so restartedAfterEmit never armed, and the `released` branch forwarded the
auth banner to the client — the exact leak F1 closed, reachable again through a single null
field. parseDeltaChunk does not validate message_id, so such a payload does reach push().

Two changes, both narrowing:
  - messageId now initializes to a Symbol sentinel, which is === to nothing a JSON payload can
    produce, so the first fire ALWAYS registers as message 1 whatever its message_id is.
  - the boundary branch drops the `this.messages > 1` sub-condition. It bought nothing and was
    the sole cause. The real invariant is "a boundary occurred while emitted !== ''" — which is
    unrecoverable regardless of how many messages have been seen — and that is now what the
    code says.

Whether claude ever emits message_id:null is unverified (the observed contract has it present),
so this is defense-in-depth, not a live bug. But the guard is the mechanism this feature
nominates as its primary safety property; it should not be disarmable by a field's absence.

Mutation-tested: restore the null sentinel + the messages>1 condition and the new test fails;
with the fix, 317 passed / 0 failed (was 316).

Class B (ADR 0007, OCP-owned TUI spawn) — cli.js does NOT perform this operation.


Claude-Session: https://claude.ai/code/session_01VqgWJcjxrjjL9L9SkpZyXR

Co-authored-by: dtzp555 <dtzp555@gmail.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-14 08:21:30 +10:00
1b324968f4 feat(tui): real SSE streaming via claude's MessageDisplay hook (OCP_TUI_STREAM, default off) (#159)
* feat(tui): real SSE streaming via claude's MessageDisplay hook (OCP_TUI_STREAM, default off)

Backlog #2. TUI-mode `stream:true` turns can now emit real SSE `delta.content` chunks as
`claude` generates them, instead of buffering the turn and replaying it with
streamStringAsSSE. Opt-in: with OCP_TUI_STREAM unset/0 the spawn argv, the SSE bytes and
the cache behaviour are byte-for-byte unchanged (asserted by test).

This PR does NOT mirror any cli.js function, so no `cli.js:NNNN` citation applies, and per
CLAUDE.md's hard requirement #1 that is stated explicitly here rather than left implicit:

  - We consume claude's OWN `MessageDisplay` hook surface AS EMITTED — forwarding, not
    inventing. No new endpoint, no fabricated protocol, no new field.
  - The TUI spawn is OCP-owned surface: ADR 0007 owns it, not cli.js.
  - The SSE wire shapes are the OpenAI chat/completions streaming spec, adopted by ADR 0006.
    Every frame emitted here (role chunk, content-delta chunk, stop chunk, `[DONE]`, and the
    post-header {error:{message,type}} frame) is COPIED from callClaudeStreaming, the -p path.

/health gains additive fields only (streamEnabled + 4 counters) — same grandfathered B.2
rationale as the existing tui block (ADR 0006). Existing keys are untouched.

`claude` fires MessageDisplay per rendered block, handing the hook the RAW MARKDOWN SOURCE
of an incremental delta on stdin. The hook is registered with `--settings` on the ordinary
interactive spawn (no -p, no --bare) — verified to leave the billing pool alone.

Sink: a static sh hook script appends each payload to `<streamDir>/<session_id>.jsonl`; OCP
polls that file and forwards deltas as SSE. The per-session-id keying is MANDATORY, not an
optimization — OCP_TUI_MAX_CONCURRENT defaults to 2, so two claude panes already run at
once and a shared sink would splice one client's deltas into another's stream.

Warm-pool compatible (a separate in-flight PR depends on this): the hook script AND the
settings file are static — nothing request-specific is baked in at spawn time. The sink path
reaches the pane through its own env (OCP_TUI_STREAM_FILE) and derives from the session-id,
which a pre-booted pane fixes at boot.

The hook is SYNCHRONOUS (forceSyncExecution: claude blocks on it), so the script writes and
exits: one `cat` append, nothing else. Measured p50 7.2ms / p90 14.7ms per fire, ~50ms across
a whole turn — noise against a 6-10s turn.

It remains the terminal-turn signal, the source of the returned/cached text T, and the input
to the honesty gates. The delta stream is a low-latency MIRROR, never a replacement:

  - the truncation gate (C-2) and auth-banner gate (C-1, issue #133) run BEFORE anything is
    committed or flushed, unchanged;
  - at end of turn the streamed bytes are asserted against T. Equal -> serve. A strict PREFIX
    of T -> top up from the transcript so the client still receives exactly T (counted).
    NOT a prefix -> REFUSE the turn: SSE error frame, no cache, no success, streamDivergences++.
    Serving text the transcript disagrees with is the failure class ALIGNMENT.md exists to
    prevent, so this fails loud rather than degrading quietly;
  - only T is ever cached — never the concatenated deltas.

The auth banner needs prevention, not just detection (SSE deltas cannot be un-sent), so the
first OCP_TUI_STREAM_HOLDBACK (100) chars are withheld: the default banner detector cannot
match a message longer than 100 chars, so releasing past that provably cannot leak a banner.
A custom CLAUDE_TUI_ERROR_PATTERNS has no such bound — OCP warns at boot.

  - BANNER, before/after the spawn change: `Sonnet 4.6 with low effort · Claude Max` both,
    including on the pane the server itself spawns. Never `API Usage Billing`. Transcript
    entrypoint stays "cli". --settings is not a --bare-class flag.
  - --settings MERGES with <HOME>/.claude/settings.json rather than clobbering it (the
    user-level settings' `env` block still reached the hook), so the isolated-HOME settings
    story (permissions / additionalDirectories) survives.
  - EXACTNESS: 8/8 varied prompts (short, long, markdown, code fence, multilingual, JSON,
    table, unicode) byte-exact vs transcript T, streamed AND buffered. 0 top-ups,
    0 divergences over 15 streamed turns.
  - TTFT: buffered delivers NOTHING until the turn ends (TTFB == total, 7.5-15.8s). Streamed
    sends headers at ~25ms (heartbeat covers the pre-first-delta silence) and first content
    mid-generation, e.g. markdown 7.9s first chunk / 12.8s total; long 9.7s / 17.4s.
  - CONCURRENCY DEMUX: two concurrent streamed turns (ALPHA/BRAVO), tui.inflight peaked at 2,
    each read its own session-keyed transcript, ZERO cross-contamination.
  - AUTH-BANNER GATE under streaming, both layers: a short banner-like turn reached the client
    as 0 content chunks + an SSE error frame (never emitted); a long one was streamed but still
    ended on an error frame, not finish_reason:"stop", and was not cached.
  - DISCONNECT mid-turn: pane torn down and semaphore slot released within 1s (info-logged,
    not booked as a model error).
  - THINKING: not leaked. Opus 4.8 + xhigh turns carry a thinking block with a signature but
    `thinking:""` (the reasoning text is not persisted in interactive mode), both
    MessageDisplay text-extraction sites in the 2.1.207 bundle filter type==="text", and no
    reasoning prose appeared in any delta; concat===T held exactly on the single-message turn.
  - npm test: 282 passed, 0 failed (was 267 on main; +15).

The transcript keeps only the model's LAST assistant message. A turn where the model narrates
before calling a tool therefore has two messages, and T is only the second. If the narration
exceeds the holdback it has already been streamed and cannot be retracted -> the turn is
REFUSED. Reproduced live: Opus narrated 475 chars before a Bash call. The assembler discards
a prior message's text when nothing has been emitted yet (so short narration is handled
correctly and stays exact), and raising OCP_TUI_STREAM_HOLDBACK above the narration length
rescues the turn — verified on that exact transcript: holdback>=500 -> served, exact=true.
Documented in README and ADR 0007; this is why streaming is opt-in and off by default.

ADR 0007 line 59 ("no real token streaming — deliberate") is amended, not silently
contradicted.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(tui): re-integrate streaming onto the warm-pane pool (#158) — install the hook at BOOT

Rebasing backlog #2 (streaming) onto #158 (warm pane pool) is not a textual merge: #158
split the monolithic runTuiTurn into bootTuiPane + runTuiTurn, and streaming had patched
the monolith. Re-integrating it in the OLD shape would have compiled, passed every existing
test, and been WRONG.

The bug that shape would have shipped: the sink was derived at TURN time from a streamDir
argument. But a POOLED pane is pre-booted long before any request exists — so on a pool HIT
runTuiTurn never cold-boots, no hook was ever registered on that pane, and the turn would
silently serve BUFFERED. Every miss streams, every hit does not; no error, no failing test.
The operator sees "streaming does nothing in production" and has nothing to grep for.

Fix — install the hook where the pane is born:
  - bootTuiPane({ streamDir }) registers the MessageDisplay hook at spawn and returns the
    pane's own sink (pane.streamFile), keyed by the pane's own --session-id. The hook script
    and settings file are STATIC (one pair per streamDir); the only per-turn thing is the
    sink path, and it is fixed at boot. So nothing request-specific is baked into a spawn.
  - runTuiTurn reads pane.streamFile — never recomputes it — so a warm pane and a cold pane
    stream through byte-for-byte the same path.
  - server.mjs threads the same streamDir into the pool's bootPane closure, so pre-booted
    panes carry the hook too. TUI_STREAM/TUI_STREAM_DIR now declare before the pool needs them.

Three regression guards added (test-features.mjs), and the third was MUTATION-TESTED: with
the fix reverted to the turn-time shape it fails ("the pooled pane's deltas must reach the
client"), with the fix in place it passes. A guard nobody has watched fail is not a guard.

/health: pool + stream* fields are now a union — the shape assertion asserts CONTAINMENT of
the seven grandfathered keys plus an exact added-set, so a future field that silently
REPLACED an original key cannot pass.

Class B (ADR 0007, OCP-owned TUI spawn) — cli.js does NOT perform this operation.
npm test: 313 passed, 0 failed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VqgWJcjxrjjL9L9SkpZyXR

* fix(tui): close the streaming auth-banner leak + 6 further review findings (PR #159)

Independent review (Iron Rule 10) found a HIGH bug by EXECUTING the code, not reading it.
All seven findings fixed. F1 and F3 were merge-blocking.

F1 (HIGH) — the auth-banner holdback was bypassed after the first release.
  TuiDeltaAssembler.released was set once and never reset at a message_id boundary, so the
  holdback + detectError predicate guarded only the FIRST message of a turn. In production's
  own configuration (OCP_TUI_FULL_TOOLS=1, where multi-message tool-using turns are the norm):
  the model narrates past the holdback before a tool call -> released; credentials expire
  mid-turn -> claude renders the 401 as ordinary assistant TEXT as a NEW message -> push()
  took the `if (this.released)` branch and handed the banner verbatim to the client. That is
  precisely the silent-error case the C-1 gate exists to prevent. Detection survived (the
  turn was still refused at finalize) but PREVENTION did not.
  Fix: once a message boundary follows an emit, the turn is already unrecoverable — finalize()
  will refuse it — so push() now emits NOTHING further for the rest of the turn.
  Second hole in the same predicate: detectTuiUpstreamError() trims before applying its
  <=100-char rule, so 101 whitespace chars trimmed to "" -> detector had nothing to classify
  -> returned null -> release fired having screened nothing. Release now gates on the TRIMMED
  length, so both sides of the check talk about the same string.

F2 — the "provably safe" claim in stream.mjs, ADR 0007 and README was unsound as written.
  Restated with both required halves: (i) nothing is emitted until the trimmed accumulation
  exceeds the detector's max banner length, AND (ii) no emission at all once a message
  boundary follows an emit. Half (i) alone only ever covered a turn's first message.

F3 (blocker) — prepareStreamHook was write-if-missing, so md-hook.sh could never be updated
  OR repaired: a host that booted once under an older version was stuck on that HOOK_SCRIPT
  forever, and a non-atomic write interrupted mid-flight left a TRUNCATED script that
  existsSync() called fine — on a hook claude BLOCKS on synchronously. Now written
  unconditionally via tmp+renameSync (the pattern already used by ensureTuiCwdTrusted).

F4 — the two spawn paths differed for non-streaming requests: the pool installed the hook
  whenever OCP_TUI_STREAM was on (correct — a pre-booted pane cannot know what request it will
  serve), but the cold path gated it on this turn's onDelta. So one stream:false request got
  --settings on a pool HIT and not on a MISS: two spawn argvs for the identical request, on
  this project's billing-classification surface. Both paths now gate on TUI_STREAM alone;
  whether the sink is POLLED remains correctly gated on onDelta.

F5 — pool._drop() killed the pane but orphaned its sink file; the reap tick drains the whole
  pool, so sinks accumulated with no GC path. Now removed best-effort on every drop path.

F6 — /health counters did not measure what they documented: streamTurns was incremented only
  AFTER the honesty gates, hiding exactly the turns an operator most wants to see (and making
  streamDivergences/streamTurns a meaningless ratio); streamDeltas counted every fire while
  claiming to count forwarded ones. Counters and docs now agree.

F7 — total hook failure was silent: zero fires per turn still yields ok:true/exact:false and
  a normal, fully-buffered answer. Only streamTopUps moved, which the code itself calls
  benign. Added streamZeroDeltaTurns (+ a tui_stream_zero_deltas warning) to separate "the
  hook is dead" from "one fire was dropped".

Tests: 316 passed, 0 failed (was 313). Every new guard MUTATION-TESTED — with each fix
reverted the guard named for it fails, and passes with the fix restored:
  - drop the restartedAfterEmit guard   -> 2 failed (incl. the strengthened old test)
  - revert trim() in the release gate   -> 1 failed
  - revert F3 to write-if-missing       -> 1 failed
The pre-existing test "new message_id AFTER an emit" asserted finalize().ok === false but
never checked what push() RETURNED — so it passed while F1 was live, documenting the leak
instead of catching it. Strengthened to assert the emission, not just the verdict.

Class B (ADR 0007, OCP-owned TUI spawn) — cli.js does NOT perform this operation.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VqgWJcjxrjjL9L9SkpZyXR

---------

Co-authored-by: dtzp555 <dtzp555@gmail.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-14 08:19:24 +10:00