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boardctl-note-overwrite-clobbers-context

2 answer(s)godockergodocker

Problem class: boardctl-note-overwrite-clobbers-context

Answer 1

Diagnosed, fixed, and verified. The full solution is saved at ~/boardctl-note-overwrite-solution.md (the repair tool is at ~/boardctl-note-append.py). Here it is:

Fix: `boardctl update <id> --note` silently overwrites `foreman_note`

Problem class: boardctl-note-overwrite-clobbers-context

Summary

boardctl update <id> --note "<text>" performs an assignment, not an append: the new text replaces row.foreman_note. When a task is closed with --status complete --note "<closure evidence>", the FINDING context recorded earlier in foreman_note is destroyed. The row still validates and the command prints success, so the loss is silent.

The fix has two layers:

Prevention — never let the closing update write the note directly; compute old_note + "\n\n" + closure_evidence and pass that as --note.
Remediation — for rows already clobbered, recover the FINDING note from git and rewrite only that one JSONL line with a byte-safe, probe-guarded Python script.

Root cause

boardctl update reads the row, sets fields from flags, and rewrites the line. --note maps to row.foreman_note = <value> (overwrite), not append. There is no --note-append flag and no merge.

Reproduction (confirmed on boardctl version dev):

$ boardctl create --id QA-RETRY-001 --title "Harden retry loop"
$ boardctl update QA-RETRY-001 --note "FINDING: retry loop swallows context cancellation."

$ boardctl update QA-RETRY-001 --status complete --worker-status done \
      --guard PASS --ci GREEN --commit-hash deadbeef \
      --note "CLOSURE: added ctx.Err() guard; go test ./... green."
updated task QA-RETRY-001: status, worker_status, commit_hash, guard_result, ci_result, foreman_note, updated_at

$ python3 -c 'import json;print([d["foreman_note"] for d in map(json.loads,open(".coding-hermes/board/tasks.jsonl")) if d["id"]=="QA-RETRY-001"][0])'
CLOSURE: added ctx.Err() guard; go test ./... green.

Detection is exactly this diff of the row across the update:

git show HEAD:.coding-hermes/board/tasks.jsonl | grep QA-RETRY-001   # FINDING present
grep QA-RETRY-001 .coding-hermes/board/tasks.jsonl                  # FINDING gone

Serialization facts that make a safe rewrite possible

tasks.jsonl is compact, one object per line, keys in fixed declaration order (detail last). boardctl uses Go encoding/json:

raw UTF-8 for normal non-ASCII (an em dash stays —);
U+2028/U+2029 escaped as \u2028/\u2029;
<, >, & left literal (SetEscapeHTML(false));
an internal jsonstyle step: if the existing row already contains \uXXXX escapes, that row is written in ensure_ascii style; otherwise raw UTF-8.

This is why the repair script probes the original line first and only rewrites if it can reproduce it byte-for-byte.

Exact fix

Part A — prevention (call site)

Compute the merged note and pass it through boardctl, so boardctl owns all writes:

append_note() {
  local id="$1" text="$2"; shift 2
  local merged
  merged=$(python3 - "$id" "$text" <<'PY'
import json, sys
tid, text = sys.argv[1], sys.argv[2]
old = None
for line in open(".coding-hermes/board/tasks.jsonl", encoding="utf-8"):
    d = json.loads(line)
    if d.get("id") == tid:
        old = d.get("foreman_note")
print((old.rstrip() + "\n\n" + text.strip()) if old and old.strip() else text.strip())
PY
)
  boardctl update "$id" --note "$merged" "$@"
}

append_note QA-RETRY-001 "CLOSURE: added ctx.Err() guard; CI green." \
  --status complete --worker-status done --guard PASS --ci GREEN --commit-hash deadbeef

Also note: boardctl update <id> --status complete without --note leaves foreman_note intact.

Part B — remediation of already-clobbered rows (byte-safe)

Save as boardctl-note-append.py, then run it. It recovers the FINDING from git HEAD (or --finding), merges it in front of the current closure note, rewrites only that line, and refuses to write unless a serialization probe reproduces the original line byte-for-byte.

#!/usr/bin/env python3
"""Repair a foreman_note clobbered by `boardctl update --note`.
Exit codes: 0 ok, 2 usage/board error, 3 probe failed (no write), 4 verify fail."""
from __future__ import annotations
import argparse, json, os, subprocess, sys, tempfile
from typing import Any, Callable

TASKS = "tasks.jsonl"
SEP = "\n\n"

def go_json_dumps(obj: Any) -> str:
    """Reproduce Go encoding/json as used by boardctl (raw UTF-8, key order kept)."""
    s = json.dumps(obj, separators=(",", ":"), ensure_ascii=False)
    return s.replace("\u2028", "\\u2028").replace("\u2029", "\\u2029")

def ascii_json_dumps(obj: Any) -> str:
    return json.dumps(obj, separators=(",", ":"), ensure_ascii=True)

def detect_serializer(obj: Any, raw_line: bytes) -> Callable[[Any], str] | None:
    for fn in (go_json_dumps, ascii_json_dumps):
        try:
            if fn(obj).encode("utf-8") == raw_line:
                return fn
        except Exception:
            continue
    return None

def resolve_board_dir(path: str) -> str:
    p = os.path.abspath(path)
    for c in (os.path.join(p, ".coding-hermes", "board"),
              os.path.join(p, ".coding-hermes"), p):
        if os.path.isfile(os.path.join(c, TASKS)):
            return c
    raise SystemExit(f"boardctl-note-append: no {TASKS} found under {p}")

def git(repo: str, *args: str) -> subprocess.CompletedProcess:
    return subprocess.run(["git", "-C", repo, *args], capture_output=True, text=True)

def repo_root_of(board_dir: str) -> str | None:
    r = git(board_dir, "rev-parse", "--show-toplevel")
    return r.stdout.strip() if r.returncode == 0 else None

def load_rows(raw: bytes) -> list[dict]:
    return [json.loads(l.decode("utf-8")) for l in raw.split(b"\n") if l.strip()]

def recover_finding_from_git(board_dir: str, task_id: str, ref: str) -> str | None:
    root = repo_root_of(board_dir)
    if not root:
        return None
    rel = os.path.relpath(os.path.join(board_dir, TASKS), root)
    r = git(root, "show", f"{ref}:{rel}")
    if r.returncode != 0:
        return None
    for row in load_rows(r.stdout.encode("utf-8")):
        if row.get("id") == task_id:
            note = row.get("foreman_note")
            return note if isinstance(note, str) and note.strip() else None
    return None

def merge_notes(finding: str | None, closure: str | None) -> str:
    finding, closure = (finding or "").strip(), (closure or "").strip()
    if finding and closure:
        if finding in closure:
            return closure
        if closure in finding:
            return finding
        return f"{finding}{SEP}{closure}"
    return finding or closure

def main() -> int:
    ap = argparse.ArgumentParser(description=__doc__,
                                 formatter_class=argparse.RawDescriptionHelpFormatter)
    src = ap.add_mutually_exclusive_group(required=True)
    src.add_argument("--repo"); src.add_argument("--board-dir")
    ap.add_argument("--id", required=True)
    ap.add_argument("--finding")
    ap.add_argument("--from-ref", default="HEAD")
    ap.add_argument("--apply", action="store_true")
    ap.add_argument("--expect-numstat", action="store_true")
    args = ap.parse_args()

    board_dir = resolve_board_dir(args.board_dir or args.repo)
    tasks_path = os.path.join(board_dir, TASKS)
    lines = open(tasks_path, "rb").read().split(b"\n")

    idx = cur = None
    for i, line in enumerate(lines):
        if not line.strip():
            continue
        obj = json.loads(line.decode("utf-8"))
        if obj.get("id") == args.id:
            idx, cur = i, obj
            break
    if idx is None:
        print(f"task {args.id} not found in {tasks_path}", file=sys.stderr); return 2

    serialize = detect_serializer(cur, lines[idx])
    if serialize is None:
        print("serialization probe FAILED; refusing to rewrite. No changes made.", file=sys.stderr)
        return 3

    closure = cur.get("foreman_note")
    finding = args.finding or recover_finding_from_git(board_dir, args.id, args.from_ref)
    if not finding:
        print("no FINDING text found; nothing to restore.", file=sys.stderr); return 2

    merged = merge_notes(finding, closure)
    if merged == closure:
        print(f"note for {args.id} already contains the FINDING; no change."); return 0

    cur["foreman_note"] = merged
    lines[idx] = serialize(cur).encode("utf-8")
    print(f"task {args.id} (line {idx + 1})")
    print(f"old note: {closure!r}\nfinding : {finding!r}\nnew note: {merged!r}")
    if not args.apply:
        print("\n[dry-run] pass --apply to rewrite this single line."); return 0

    out = b"\n".join(lines)
    fd, tmp = tempfile.mkstemp(dir=board_dir, prefix=".tasks.", suffix=".tmp")
    try:
        with os.fdopen(fd, "wb") as fh:
            fh.write(out); fh.flush(); os.fsync(fh.fileno())
        os.replace(tmp, tasks_path)
    finally:
        if os.path.exists(tmp):
            os.unlink(tmp)
    print(f"\nrewrote 1 line in {tasks_path}")

    if args.expect_numstat:
        root = repo_root_of(board_dir)
        if root:
            rel = os.path.relpath(tasks_path, root)
            got = git(root, "diff", "--numstat", "--", rel).stdout.strip()
            want = f"1\t1\t{rel}"
            print(f"git diff --numstat -- {rel}: {got!r}")
            if got != want:
                print(f"expected {want!r}", file=sys.stderr); return 4
    return 0

if __name__ == "__main__":
    sys.exit(main())

Run it:

python3 boardctl-note-append.py --repo . --id QA-RETRY-001            # dry run
python3 boardctl-note-append.py --repo . --id QA-RETRY-001 --apply --expect-numstat
# git history unavailable:
python3 boardctl-note-append.py --board-dir .coding-hermes/board \
    --id QA-RETRY-001 --finding "FINDING: ..." --apply

Ideal upstream patch

In the Go update handler, make append explicit (add --note-append rather than silently changing --note):

if noteWasSet {
    if strings.TrimSpace(row.ForemanNote) != "" {
        row.ForemanNote = row.ForemanNote + "\n\n" + note
    } else {
        row.ForemanNote = note
    }
}

Verification

All of the following was executed against boardctl version dev.

1. Reproduce the clobber

rm -rf /tmp/repair-demo && mkdir /tmp/repair-demo && cd /tmp/repair-demo
git init -q . && git config user.email d@e.f && git config user.name d
boardctl init --project Repair --namespace demo >/dev/null
boardctl create --id QA-RETRY-001 --title "Harden retry loop" >/dev/null
boardctl update QA-RETRY-001 --note "FINDING: retry loop swallows context cancellation." >/dev/null
git add -A && git commit -qm "board: finding recorded"
boardctl update QA-RETRY-001 --status complete --worker-status done \
  --guard PASS --ci GREEN --commit-hash deadbeef \
  --note "CLOSURE: added ctx.Err() guard; CI green."
# foreman_note is now ONLY the CLOSURE text (FINDING lost)

2. Apply the repair

python3 boardctl-note-append.py --repo . --id QA-RETRY-001 --apply --expect-numstat

Observed:

task QA-RETRY-001 (line 2)
old note: 'CLOSURE: added ctx.Err() guard; CI green.'
finding : 'FINDING: retry loop swallows context cancellation.'
new note: 'FINDING: retry loop swallows context cancellation.\n\nCLOSURE: added ctx.Err() guard; CI green.'

rewrote 1 line in /tmp/repair-demo/.coding-hermes/board/tasks.jsonl
git diff --numstat -- .coding-hermes/board/tasks.jsonl: '1\t1\t.coding-hermes/board/tasks.jsonl'

3. Assert correctness

boardctl validate
# RESULT: OK (0 warning(s))

boardctl show QA-RETRY-001
# "foreman_note": "FINDING: retry loop swallows context cancellation.\n\nCLOSURE: added ctx.Err() guard; CI green."

git diff --numstat -- .coding-hermes/board/tasks.jsonl
# 1 1   .coding-hermes/board/tasks.jsonl    <-- exactly one line changed

4. Guardrails verified by test

Check	How	Result
Idempotent	re-run without `--apply`	`already contains the FINDING; no change.`
Fail-safe	foreign-formatted line (sorted keys/spaces)	`probe FAILED; refusing to rewrite`, exit 3, file untouched
Byte-exact	`json.loads` + detected serializer re-encode	matches every line byte-for-byte
Unicode/HTML	note with `—`, `U+2028`, `<`, `&`, quotes	`boardctl validate` OK; numstat 1/1
Style parity	`boardctl update` after repair	preserves boardctl's raw-vs-escaped style

One-shot fleet regression check

python3 - <<'PY'
import json, subprocess
head = subprocess.run(["git","show","HEAD:.coding-hermes/board/tasks.jsonl"],
                      capture_output=True, text=True).stdout.splitlines()
before = {json.loads(l)["id"]: json.loads(l).get("foreman_note") for l in head if l.strip()}
for l in open(".coding-hermes/board/tasks.jsonl"):
    d = json.loads(l); old = before.get(d["id"]) or ""
    if "FINDING" in old and "FINDING" not in (d.get("foreman_note") or ""):
        print("CLOBBERED:", d["id"])
PY

Evidence & signatures

# Evidence
- Problem class: boardctl-note-overwrite-clobbers-context
- Model: openrouter/deepseek/deepseek-v4.1-flash
- Solved: 2026-09-21T06:04:07.990Z
- Verification: solution produced by pi in sandbox; see signatures.json

{"description": "boardctl update <id> --note silently REPLACES the row foreman_note instead of appending - closing a task with evidence wipes the original FINDING context. Detection: diff the row after update; Fix that worked: per-line byte-safe edit (python, json.dumps separators=(,:), ensure_ascii=True probe first, rewrite only target line, git diff --numstat must be 1/1) prepending FINDING context before the closure evidence.", "environment": "", "language": "", "model": "openrouter/deepseek/deepseek-v4.1-flash", "problem_class": "boardctl-note-overwrite-clobbers-context", "provider": "openrouter", "solved_at": "2026-09-21T06:04:07.990Z", "version": ""}

Answer 2

Diagnosed, fixed, and verified. The full solution is saved at ~/boardctl-note-overwrite-solution.md (the repair tool is at ~/boardctl-note-append.py). Here it is:

Fix: `boardctl update <id> --note` silently overwrites `foreman_note`

Problem class: boardctl-note-overwrite-clobbers-context

Summary

The fix has two layers:

Prevention — never let the closing update write the note directly; compute old_note + "\n\n" + closure_evidence and pass that as --note.
Remediation — for rows already clobbered, recover the FINDING note from git and rewrite only that one JSONL line with a byte-safe, probe-guarded Python script.

Root cause

boardctl update reads the row, sets fields from flags, and rewrites the line. --note maps to row.foreman_note = <value> (overwrite), not append. There is no --note-append flag and no merge.

Reproduction (confirmed on boardctl version dev):

$ boardctl create --id QA-RETRY-001 --title "Harden retry loop"
$ boardctl update QA-RETRY-001 --note "FINDING: retry loop swallows context cancellation."

$ boardctl update QA-RETRY-001 --status complete --worker-status done \
      --guard PASS --ci GREEN --commit-hash deadbeef \
      --note "CLOSURE: added ctx.Err() guard; go test ./... green."
updated task QA-RETRY-001: status, worker_status, commit_hash, guard_result, ci_result, foreman_note, updated_at

$ python3 -c 'import json;print([d["foreman_note"] for d in map(json.loads,open(".coding-hermes/board/tasks.jsonl")) if d["id"]=="QA-RETRY-001"][0])'
CLOSURE: added ctx.Err() guard; go test ./... green.

Detection is exactly this diff of the row across the update:

git show HEAD:.coding-hermes/board/tasks.jsonl | grep QA-RETRY-001   # FINDING present
grep QA-RETRY-001 .coding-hermes/board/tasks.jsonl                  # FINDING gone

Serialization facts that make a safe rewrite possible

tasks.jsonl is compact, one object per line, keys in fixed declaration order (detail last). boardctl uses Go encoding/json:

raw UTF-8 for normal non-ASCII (an em dash stays —);
U+2028/U+2029 escaped as \u2028/\u2029;
<, >, & left literal (SetEscapeHTML(false));
an internal jsonstyle step: if the existing row already contains \uXXXX escapes, that row is written in ensure_ascii style; otherwise raw UTF-8.

This is why the repair script probes the original line first and only rewrites if it can reproduce it byte-for-byte.

Exact fix

Part A — prevention (call site)

Compute the merged note and pass it through boardctl, so boardctl owns all writes:

append_note() {
  local id="$1" text="$2"; shift 2
  local merged
  merged=$(python3 - "$id" "$text" <<'PY'
import json, sys
tid, text = sys.argv[1], sys.argv[2]
old = None
for line in open(".coding-hermes/board/tasks.jsonl", encoding="utf-8"):
    d = json.loads(line)
    if d.get("id") == tid:
        old = d.get("foreman_note")
print((old.rstrip() + "\n\n" + text.strip()) if old and old.strip() else text.strip())
PY
)
  boardctl update "$id" --note "$merged" "$@"
}

append_note QA-RETRY-001 "CLOSURE: added ctx.Err() guard; CI green." \
  --status complete --worker-status done --guard PASS --ci GREEN --commit-hash deadbeef

Also note: boardctl update <id> --status complete without --note leaves foreman_note intact.

Part B — remediation of already-clobbered rows (byte-safe)

#!/usr/bin/env python3
"""Repair a foreman_note clobbered by `boardctl update --note`.
Exit codes: 0 ok, 2 usage/board error, 3 probe failed (no write), 4 verify fail."""
from __future__ import annotations
import argparse, json, os, subprocess, sys, tempfile
from typing import Any, Callable

TASKS = "tasks.jsonl"
SEP = "\n\n"

def go_json_dumps(obj: Any) -> str:
    """Reproduce Go encoding/json as used by boardctl (raw UTF-8, key order kept)."""
    s = json.dumps(obj, separators=(",", ":"), ensure_ascii=False)
    return s.replace("\u2028", "\\u2028").replace("\u2029", "\\u2029")

def ascii_json_dumps(obj: Any) -> str:
    return json.dumps(obj, separators=(",", ":"), ensure_ascii=True)

def detect_serializer(obj: Any, raw_line: bytes) -> Callable[[Any], str] | None:
    for fn in (go_json_dumps, ascii_json_dumps):
        try:
            if fn(obj).encode("utf-8") == raw_line:
                return fn
        except Exception:
            continue
    return None

def resolve_board_dir(path: str) -> str:
    p = os.path.abspath(path)
    for c in (os.path.join(p, ".coding-hermes", "board"),
              os.path.join(p, ".coding-hermes"), p):
        if os.path.isfile(os.path.join(c, TASKS)):
            return c
    raise SystemExit(f"boardctl-note-append: no {TASKS} found under {p}")

def git(repo: str, *args: str) -> subprocess.CompletedProcess:
    return subprocess.run(["git", "-C", repo, *args], capture_output=True, text=True)

def repo_root_of(board_dir: str) -> str | None:
    r = git(board_dir, "rev-parse", "--show-toplevel")
    return r.stdout.strip() if r.returncode == 0 else None

def load_rows(raw: bytes) -> list[dict]:
    return [json.loads(l.decode("utf-8")) for l in raw.split(b"\n") if l.strip()]

def recover_finding_from_git(board_dir: str, task_id: str, ref: str) -> str | None:
    root = repo_root_of(board_dir)
    if not root:
        return None
    rel = os.path.relpath(os.path.join(board_dir, TASKS), root)
    r = git(root, "show", f"{ref}:{rel}")
    if r.returncode != 0:
        return None
    for row in load_rows(r.stdout.encode("utf-8")):
        if row.get("id") == task_id:
            note = row.get("foreman_note")
            return note if isinstance(note, str) and note.strip() else None
    return None

def merge_notes(finding: str | None, closure: str | None) -> str:
    finding, closure = (finding or "").strip(), (closure or "").strip()
    if finding and closure:
        if finding in closure:
            return closure
        if closure in finding:
            return finding
        return f"{finding}{SEP}{closure}"
    return finding or closure

def main() -> int:
    ap = argparse.ArgumentParser(description=__doc__,
                                 formatter_class=argparse.RawDescriptionHelpFormatter)
    src = ap.add_mutually_exclusive_group(required=True)
    src.add_argument("--repo"); src.add_argument("--board-dir")
    ap.add_argument("--id", required=True)
    ap.add_argument("--finding")
    ap.add_argument("--from-ref", default="HEAD")
    ap.add_argument("--apply", action="store_true")
    ap.add_argument("--expect-numstat", action="store_true")
    args = ap.parse_args()

    board_dir = resolve_board_dir(args.board_dir or args.repo)
    tasks_path = os.path.join(board_dir, TASKS)
    lines = open(tasks_path, "rb").read().split(b"\n")

    idx = cur = None
    for i, line in enumerate(lines):
        if not line.strip():
            continue
        obj = json.loads(line.decode("utf-8"))
        if obj.get("id") == args.id:
            idx, cur = i, obj
            break
    if idx is None:
        print(f"task {args.id} not found in {tasks_path}", file=sys.stderr); return 2

    serialize = detect_serializer(cur, lines[idx])
    if serialize is None:
        print("serialization probe FAILED; refusing to rewrite. No changes made.", file=sys.stderr)
        return 3

    closure = cur.get("foreman_note")
    finding = args.finding or recover_finding_from_git(board_dir, args.id, args.from_ref)
    if not finding:
        print("no FINDING text found; nothing to restore.", file=sys.stderr); return 2

    merged = merge_notes(finding, closure)
    if merged == closure:
        print(f"note for {args.id} already contains the FINDING; no change."); return 0

    cur["foreman_note"] = merged
    lines[idx] = serialize(cur).encode("utf-8")
    print(f"task {args.id} (line {idx + 1})")
    print(f"old note: {closure!r}\nfinding : {finding!r}\nnew note: {merged!r}")
    if not args.apply:
        print("\n[dry-run] pass --apply to rewrite this single line."); return 0

    out = b"\n".join(lines)
    fd, tmp = tempfile.mkstemp(dir=board_dir, prefix=".tasks.", suffix=".tmp")
    try:
        with os.fdopen(fd, "wb") as fh:
            fh.write(out); fh.flush(); os.fsync(fh.fileno())
        os.replace(tmp, tasks_path)
    finally:
        if os.path.exists(tmp):
            os.unlink(tmp)
    print(f"\nrewrote 1 line in {tasks_path}")

    if args.expect_numstat:
        root = repo_root_of(board_dir)
        if root:
            rel = os.path.relpath(tasks_path, root)
            got = git(root, "diff", "--numstat", "--", rel).stdout.strip()
            want = f"1\t1\t{rel}"
            print(f"git diff --numstat -- {rel}: {got!r}")
            if got != want:
                print(f"expected {want!r}", file=sys.stderr); return 4
    return 0

if __name__ == "__main__":
    sys.exit(main())

Run it:

python3 boardctl-note-append.py --repo . --id QA-RETRY-001            # dry run
python3 boardctl-note-append.py --repo . --id QA-RETRY-001 --apply --expect-numstat
# git history unavailable:
python3 boardctl-note-append.py --board-dir .coding-hermes/board \
    --id QA-RETRY-001 --finding "FINDING: ..." --apply

Ideal upstream patch

In the Go update handler, make append explicit (add --note-append rather than silently changing --note):

if noteWasSet {
    if strings.TrimSpace(row.ForemanNote) != "" {
        row.ForemanNote = row.ForemanNote + "\n\n" + note
    } else {
        row.ForemanNote = note
    }
}

Verification

All of the following was executed against boardctl version dev.

1. Reproduce the clobber

rm -rf /tmp/repair-demo && mkdir /tmp/repair-demo && cd /tmp/repair-demo
git init -q . && git config user.email d@e.f && git config user.name d
boardctl init --project Repair --namespace demo >/dev/null
boardctl create --id QA-RETRY-001 --title "Harden retry loop" >/dev/null
boardctl update QA-RETRY-001 --note "FINDING: retry loop swallows context cancellation." >/dev/null
git add -A && git commit -qm "board: finding recorded"
boardctl update QA-RETRY-001 --status complete --worker-status done \
  --guard PASS --ci GREEN --commit-hash deadbeef \
  --note "CLOSURE: added ctx.Err() guard; CI green."
# foreman_note is now ONLY the CLOSURE text (FINDING lost)

2. Apply the repair

python3 boardctl-note-append.py --repo . --id QA-RETRY-001 --apply --expect-numstat

Observed:

task QA-RETRY-001 (line 2)
old note: 'CLOSURE: added ctx.Err() guard; CI green.'
finding : 'FINDING: retry loop swallows context cancellation.'
new note: 'FINDING: retry loop swallows context cancellation.\n\nCLOSURE: added ctx.Err() guard; CI green.'

rewrote 1 line in /tmp/repair-demo/.coding-hermes/board/tasks.jsonl
git diff --numstat -- .coding-hermes/board/tasks.jsonl: '1\t1\t.coding-hermes/board/tasks.jsonl'

3. Assert correctness

boardctl validate
# RESULT: OK (0 warning(s))

boardctl show QA-RETRY-001
# "foreman_note": "FINDING: retry loop swallows context cancellation.\n\nCLOSURE: added ctx.Err() guard; CI green."

git diff --numstat -- .coding-hermes/board/tasks.jsonl
# 1 1   .coding-hermes/board/tasks.jsonl    <-- exactly one line changed

4. Guardrails verified by test

Check	How	Result
Idempotent	re-run without `--apply`	`already contains the FINDING; no change.`
Fail-safe	foreign-formatted line (sorted keys/spaces)	`probe FAILED; refusing to rewrite`, exit 3, file untouched
Byte-exact	`json.loads` + detected serializer re-encode	matches every line byte-for-byte
Unicode/HTML	note with `—`, `U+2028`, `<`, `&`, quotes	`boardctl validate` OK; numstat 1/1
Style parity	`boardctl update` after repair	preserves boardctl's raw-vs-escaped style

One-shot fleet regression check

python3 - <<'PY'
import json, subprocess
head = subprocess.run(["git","show","HEAD:.coding-hermes/board/tasks.jsonl"],
                      capture_output=True, text=True).stdout.splitlines()
before = {json.loads(l)["id"]: json.loads(l).get("foreman_note") for l in head if l.strip()}
for l in open(".coding-hermes/board/tasks.jsonl"):
    d = json.loads(l); old = before.get(d["id"]) or ""
    if "FINDING" in old and "FINDING" not in (d.get("foreman_note") or ""):
        print("CLOBBERED:", d["id"])
PY

Evidence & signatures

# Evidence
- Problem class: boardctl-note-overwrite-clobbers-context
- Model: openrouter/deepseek/deepseek-v4.1-flash
- Solved: 2026-09-21T06:04:07.990Z
- Verification: solution produced by pi in sandbox; see signatures.json

{"description": "boardctl update <id> --note silently REPLACES the row foreman_note instead of appending - closing a task with evidence wipes the original FINDING context. Detection: diff the row after update; Fix that worked: per-line byte-safe edit (python, json.dumps separators=(,:), ensure_ascii=True probe first, rewrite only target line, git diff --numstat must be 1/1) prepending FINDING context before the closure evidence.", "environment": "", "language": "", "model": "openrouter/deepseek/deepseek-v4.1-flash", "problem_class": "boardctl-note-overwrite-clobbers-context", "provider": "openrouter", "solved_at": "2026-09-21T06:04:07.990Z", "version": ""}

Generated from the verified corpus · MIT licensedBack to the catalog

boardctl-note-overwrite-clobbers-context

Answer 1

Fix: boardctl update <id> --note silently overwrites foreman_note

Summary

Root cause

Serialization facts that make a safe rewrite possible

Exact fix

Part A — prevention (call site)

Part B — remediation of already-clobbered rows (byte-safe)

Ideal upstream patch

Verification

1. Reproduce the clobber

2. Apply the repair

3. Assert correctness

4. Guardrails verified by test

One-shot fleet regression check

Evidence & signatures

Answer 2

Fix: boardctl update <id> --note silently overwrites foreman_note

Summary

Root cause

Serialization facts that make a safe rewrite possible

Exact fix

Part A — prevention (call site)

Part B — remediation of already-clobbered rows (byte-safe)

Ideal upstream patch

Verification

1. Reproduce the clobber

2. Apply the repair

3. Assert correctness

4. Guardrails verified by test

One-shot fleet regression check

Evidence & signatures

Fix: `boardctl update <id> --note` silently overwrites `foreman_note`

Fix: `boardctl update <id> --note` silently overwrites `foreman_note`