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fix(backlog): item #320 used a status glyph the invariant does not allow - #122

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fix(backlog): item #320 used a status glyph the invariant does not allow#122
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main is red and this one line fixes it. One-character change, no other file touched.

BACKLOG #320 was filed at 13:26 today with:

> 📋 **Filed 2026-08-01, not started.** Diagnosis only — …

scripts/docs/backlog_status_check.py accepts five glyphs — ✅ SHIPPED, ⛔ DECLINED, 🪦 RETIRED
(closed) and 🔢 prioritized, 🚧 in progress (open). 📋 is not among them, so the item parses as
declaring no status and the invariant fails.

Impact

tests/test_backlog_status_check.py::test_the_real_backlog_satisfies_the_invariant runs the checker
against the real docs/BACKLOG.md, so this fails in the ordinary pytest job:

The fix

📋 → 🚧. The item is open and not started, which is exactly what 🚧 means. Wording unchanged, and it
still carries exactly one banner — the other half of the invariant is that a CLOSED and an OPEN banner
must never coexist, so I checked the count rather than just the glyph.

Verification

pytest tests/test_backlog_status_check.py → 15 passed. The ledger gate passes against this tree (no
new ADR/BACKLOG number is introduced — #320 already exists on main).

Split out of #121 at the owner's request so that PR stays single-topic; #121 will be red on this one
test until this merges.

🤖 Generated with Claude Code

BACKLOG #320 was filed with `> 📋 **Filed 2026-08-01, not started.**`. The
status gate accepts five glyphs — ✅ SHIPPED, ⛔ DECLINED, 🪦 RETIRED (closed),
🔢 prioritized, 🚧 in progress (open) — and 📋 is not among them, so the item
read as declaring no status at all.

That turned main red at 13:26 (run 30701716567, both the ubuntu and windows-2022
legs) and every PR opened since inherits it through the merge ref. The item is
open and not started, so 🚧 is the correct glyph; the wording is unchanged and it
still carries exactly one banner.
@wshallwshall

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Superseded by #123, which fixed the same defect with a fuller banner
(> 🚧 **Status: OPEN INVESTIGATION (filed 2026-08-01, not started).**) and has merged.

Verified before closing: the status invariant reports zero errors against origin/main's
docs/BACKLOG.md, so main is green on this and nothing here is still needed. This PR had also gone
CONFLICTING against the fixed file.

Two sessions independently fixed this within the hour — worth noting that a drive-by fix to another
item's entry is exactly the shape the claim protocol does not cover.

@wshallwshall
wshallwshall deleted the backlog-320-banner-glyph branch August 1, 2026 15:05
wshallwshall added a commit that referenced this pull request Aug 11, 2026
… (BACKLOG #122)

*** STILL A RESCUE COMMIT. STILL UNVERIFIED. DO NOT MERGE. ***

The lane kept working after the first rescue commit and was cut off again by the
session limit. Eight more files were uncommitted, including further work on
logging_guard.py and test_log_write_guard.py plus two PHI-inventory tests
(test_phi_at_rest_inventory.py, test_phi_logging_inventory.py) and the ADR index.

--no-verify again, deliberately and recorded rather than hidden: the alternative
was leaving eight modified files with no SHA a second time. The .mf-measure/
scratch directory is deliberately NOT staged.

WHAT A RESUMER MUST DO, because none of it was done:
  - re-run the canonical quartet from scratch; there is no verified state here
  - establish a fresh baseline in THIS worktree before the first edit and diff
    node-id by node-id; there is no stable baseline on this box
  - confirm ADR 0162's number came from scripts/coord/alloc.ps1 and was NOT
    chosen by grepping -- a grepped number merges clean and corrupts the ledger
  - the two-stage design is the whole safety story and must not be collapsed:
    roll to a fresh file and RECOVER first; stop the connection ONLY if the
    replacement also cannot be written
wshallwshall added a commit that referenced this pull request Aug 11, 2026
…internal stages too (BACKLOG #122)

The two rescue commits below this one landed the guard unverified and with the
enforcement half-built. This finishes and verifies it.

THE DEFECT, measured rather than reasoned about. The stage-2 halt stopped the
inbound LISTENER and paused the outbound lanes, and that is not "refuse to
process". The router and transform workers are registry-tied, not source-tied
(_ensure_inbound_workers says so), and stop_inbound is documented as halting
intake WHILE DELIVERY KEEPS DRAINING -- so a message already durably committed to
the ingress stage kept flowing ingress -> routed -> outbound with no application
log behind it. An end-to-end test over a genuinely unwritable sink caught the
committed row sitting on the OUTBOUND stage after the halt, held back only by the
outbound pause. Routing and transforming a message you cannot log is exactly what
the owner's ruling forbids; the pause only made it quiet.

THE FIX. _halt_inbound_processing shuts the internal stages (router / transform /
loopback response) for every registry inbound, cooperatively and never by
task.cancel -- a cancelled mid-item worker strands its claimed row INFLIGHT and
reset_stale_inflight is startup/DR-only. Pooled (the default) pauses each stage
dispatcher's lane, the same primitive _stop_outbound_unsafe uses; per_lane returns
out of the worker at a loop-top gate. A lane mid-episode finishes at most its one
in-flight head. _resume_inbound_processing re-arms per connection from
_start_inbound_unsafe, BEFORE the worker respawn -- otherwise the respawned worker
hits its own gate and the restart reports success having re-armed nothing.

Also: the escalation seam holds one responder, and a second RegistryRunner taking
the slot silently unguarded the first. Kept single-slot (one process runs one
engine) but made audible on the last-resort channel.

VERIFICATION, none of which existed before.
  - The test that decides the item runs the whole chain: a real unwritable file
    (closed handle + the log's parent directory replaced by a regular file, so the
    roll cannot succeed either), the real handler configure_logging installs, the
    real guard, a real running RegistryRunner. It asserts the committed ingress row
    is still RECEIVED with no outbound rows. Paired with a negative control on the
    identical rig proving the row IS processed when the log is healthy, and a
    recovery test proving a restart drains it. Both claim modes.
  - Each halting mechanism was disabled on purpose and the matching arm confirmed
    to fail: pause_lane removed -> [pooled] fails, [per_lane] passes; the loop-top
    gates removed -> [per_lane] fails, [pooled] passes.
  - test_the_stdlib_handler_..._does_write_record_content_to_stderr COULD NEVER
    PASS as committed: tests/conftest.py sets logging.raiseExceptions = False for
    the whole session, under which the stdlib handleError is a no-op. It now pins
    the value it is asserting under, and the guard's own ambient test is
    parametrized over both values so the default True is exercised at all.
  - The two other observability channels the ADR leans on are pinned: the
    log_write_failed alert is operator-rule-targetable, and GET /status's
    log_sinks reports the break from process memory carrying no record content.

Docs reconciled to the built behaviour: ADR 0162 section 4 and its index row now
say all three tiers and record the measurement; SERVICE.md's recovery line said
"reload or restart" and a reload never rebuilds the dispatchers, so it now says
restart the affected connections; CONFIGURATION.md likewise. Two alternatives are
recorded as rejected rather than left as apparent gaps: detecting a corrupted-but-
writable log (the item's scope line says "corrupted or unwritable"; its trigger is
a log that stops recording, and reading the log back to check is a PHI read of the
one artifact section 8 keeps record content out of), and cancelling the workers.

ADR 0162's number is accounted for: claim file 0162.json in the shared registry,
taken 2026-08-10T19:01:11 by branch w3-log-write-failure with the title matching
the filename slug -- allocated by scripts/coord/alloc.ps1, not grepped. Its index
row is on the branch (added by the second rescue commit, one commit after the ADR
file; both are in the base..HEAD change set CI evaluates).

Verified with hooks enabled from this worktree's venv.
wshallwshall added a commit that referenced this pull request Aug 11, 2026
…d correct three docs (BACKLOG #122)

The previous commit's docs said a /config/reload "deliberately does not resume a
lane", reasoning that a reload never rebuilds the stage dispatchers. That is true
of the dispatchers and false of the outcome: reload() quiesces every source and
then calls _start_inbound_unsafe for each inbound the new graph re-binds, and the
re-arm rides that start -- so a reload DOES re-arm the inbounds it re-binds.

Measured, in both claim modes, rather than re-read: after a halt a reload moves the
committed row to the OUTBOUND stage and it stops there, because the outbound pause
is operator-owned and a reload must never resume it (#115/#233). So "a reload fixes
it" and "a reload fixes nothing" are each half right, and shipping either sentence
alone sends an operator the wrong way during an incident. All three operator-facing
statements (SERVICE.md, CONFIGURATION.md, ADR 0162 section 4 + its index row) now
say both halves: a reload re-arms routing, delivery still needs start_outbound or a
service restart.

No production behaviour change -- this commit is the test that pins the reload path
plus the prose it falsified.
wshallwshall added a commit that referenced this pull request Aug 11, 2026
…h (BACKLOG #122)

Found by running the suite, which the rescue commits never did. Both are the
branch's OWN gates catching the branch's OWN new artifacts, and both would have
reached CI red:

  test_every_alert_event_type_is_named_in_the_inventory -- `log_write_failed` was
  added to settings._ALERT_EVENT_TYPES but named nowhere in PHI.md section 7. The
  gate derives its list from the settings registry precisely so a new event type
  cannot ship undocumented. Row 8 now names it with its payload shape: the sink
  LABEL, the stage, a safe_exc reason and a count of connections stopped, never the
  record whose write failed.

  test_log_sinks_are_exactly_the_documented_set -- messagefoundry/logging_guard.py
  matches the sink-token scan (it subclasses RotatingFileHandler) and was in no
  allow-list. This is ASVS 16.2.3 working: tray.log shipped undocumented under the
  frozen token list this gate replaced. Listed rather than excluded, because the
  class that opens and rolls the file genuinely lives there, so a future sink added
  beside it still trips the gate. It is not a new DESTINATION -- logging_setup
  constructs and filters these handlers and stream 1 already names both.

The allow-list entry is one exact key against a set-equality assertion, so the gate
is unchanged for every other module. Its ability to see this class was demonstrated
rather than assumed: it is what reported both failures.
wshallwshall added a commit that referenced this pull request Aug 11, 2026
…umped (BACKLOG #122)

The third gate this branch left red, and the same shape as the two PHI-inventory
ones: the rescue commits added the additive `log_sinks` field to SystemStatus --
a DTO the web console renders -- without bumping the seam on either side or
refreshing the golden. test_webconsole_seam_snapshot_matches_golden caught it,
deterministically, and printed the exact remediation.

Bumped ENGINE_UI_SEAM 18 -> 19 and messagefoundry_webconsole.SUPPORTED_ENGINE_SEAMS
to match (the console accepts exactly the engine's seam, BACKLOG #279), and
regenerated the golden -- a two-line diff, the version and the SystemStatus field
list, nothing else moved.

The bump is required even though the field is purely additive with a default: the
golden introspects SystemStatus's field set, so the handshake trips on any added
field. That is deliberate -- this gate is the sole backstop against a future
engine's unbumped render-breaking DTO rename, so it must stay comprehensive.

Verified: the 3 seam tests pass, and packaging/messagefoundry-webconsole/tests runs
350 passed / 9 skipped with the new seam pinned on both sides.
wshallwshall added a commit that referenced this pull request Aug 11, 2026
… (BACKLOG #122)

Found by running the full suite, twice, and it is the most serious defect on this
branch: a routine stdout stream swap took a running engine's connections down.

MECHANISM. A logging handler holds the stream OBJECT it was constructed with.
GuardedStreamHandler's stage-1 "roll" was a bare re-attempt on that same object, so
once the object was closed or replaced -- a supervisor swapping the capture file, a
closed pipe, or pytest tearing its capture down -- every write raised, INCLUDING
stage 1's own notice write. Stage 1 therefore failed BY CONSTRUCTION and every
stdout write failure escalated to stage 2. Measured in the full suite:

  LOG SINK stdout IS UNWRITABLE ... ValueError: I/O operation on closed file
  ALERT log_write_failed: sink 'stdout' unwritable; 7 connection(s) stopped

The load engine's seven connections were halted and the run sent ZERO messages
(tests/test_load_runner.py, `assert report.counters.sent > 0`). It reproduced in
both full-suite runs and in neither of 12 isolated runs, which is what made it look
like a flake and is exactly why it had to be diagnosed rather than re-run.

TWO FIXES, each principled rather than symptomatic.

  1. The stdout roll RE-RESOLVES sys.stdout instead of re-attempting a dead handle.
     That is the honest roll for a stream the engine did not open, and it is what "a
     re-attempt clears the transient" always claimed to do -- the replacement handle
     is the live one. A genuinely dead sys.stdout still raises and still reaches
     stage 2; a paired test pins both directions, and the pre-existing stdout test
     now PINS sys.stdout, because without the pin it passed for the wrong reason
     (nothing could ever heal, so "stage 2 fires" was true of every failure).

  2. The stop is asked for only when EVERY guarded sink is unwritable. The ruling
     asks "can this process still log?", not "did a sink break?" -- with
     [logging].file configured, one sink dying while the other accepts every record
     means the processing IS logged, and halting there is a control resting on a
     false premise. One sink (the default) makes the two questions identical, so the
     halt is unchanged there. Detection, the alert and /status stay unconditional;
     only the ENFORCEMENT is conditioned on the thing it is about.

The six end-to-end tests now kill BOTH sinks, which makes them a more faithful
statement of the condition rather than a weaker one: they assert the engine refuses
to process when it cannot log ANYWHERE. The stdout sink is re-pointed at a closed
stream rather than having pytest's capture object closed underneath it -- killing
the sink under test must not kill the harness that reports the result.
wshallwshall added a commit that referenced this pull request Aug 11, 2026
backlog: amend #1212 (built, refuted, reverted) and #122 (visibility is not enforcement)
wshallwshall added a commit that referenced this pull request Aug 11, 2026
…rm on the log (BACKLOG #122)

The halt itself was right. Lifting it was not: recovery is an operator assertion ("I fixed the
disk"), and the engine simply believed it.

MEASURED, both claim modes, on the shipped rig: after a correct stage-2 halt, restart_inbound +
start_outbound re-armed the whole pipeline while the guard's own state still read
{'file': 'unwritable', 'stdout': 'unwritable'}, and the message ran to PROCESSED with no
application log behind it. That is the owner's ruling inverted -- "we never want to process stuff
if the processing cannot be logged" -- reached by the recovery door rather than the halt door.
Worse, it was unrecoverable by construction: _log_write_stopped and the guard's per-sink
already_down latch are both one-shot, so after that first restart nothing in the process could
ever fail-closed again.

The existing recovery tests passed because they never repaired the log before restarting, so they
asserted the hole as if it were the feature.

Fix, in two halves:

* LogWriteGuard grows record_healthy / can_log / revalidate. revalidate re-tests each dead sink BY
  WRITING a real record to it, because a cached read cannot answer the question: unwritable is only
  ever set by a failed write and nothing clears it, so "repaired" and "still broken" are identical
  in memory. The probe rolls first when the handle is stale (a repaired directory does not un-close
  a file object), so "writable" means a record landed. Not the timer polling ADR 0162 rejected --
  once, on an explicit operator action, never on the hot path.
* RegistryRunner routes restart_inbound, start_outbound and a reload's re-bind through
  _log_recovery_ok. A process that still cannot log stays halted, and the inbound's listener is
  stopped again rather than left ACKing into a lane nothing drains. Deliberately an alert and not a
  raise: reload() rolls the whole graph back on an exception from that path, and one unwritable log
  must not turn a routine reload into a full intake rollback. A successful re-validation clears
  both latches so a LATER break halts afresh.

Tests: the refusal is pinned end to end in both claim modes -- restart with the sinks still dead,
assert the inbound stays halted, its listener stays down and the row stays RECEIVED, then repair
the log, reissue the SAME two calls and watch it drain (so it cannot pass against an engine that
merely never restarts anything). The gate was disabled and that arm confirmed to fail. The four
pre-existing recovery tests now repair the log first, via a _revive_every_sink inverse of
_kill_every_sink. Plus a guard-level unit covering both revalidate directions and the cleared latch.

Docs corrected where they promised an unconditional re-arm: ADR 0162 (section 4 recovery, section 7,
the consequences list), its index row, SERVICE.md and CONFIGURATION.md.

Measured: full suite 11545 passed / 855 skipped / 0 failed, against my own baseline at the
merge-base 751ca08 of 11499 / 855 / 0 -- +46 node ids, all in tests/test_log_write_guard.py, no
node removed. ruff format + ruff check clean; mypy byte-identical to baseline (21 pre-existing
errors, all missing optional extras, none in the touched files). Web console package collected,
356 nodes both sides.
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