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OpenAI Codex v0.145.0
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workdir: /var/folders/xl/3tf773396mgbm5yp5g_xr6x00000gn/T/probe-ws.UJDwqs
model: gpt-5.6-luna
provider: openai
approval: never
sandbox: read-only
reasoning effort: xhigh
reasoning summaries: none
session id: 019fcf35-43de-7b62-a5b7-cd244cdea719
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user
Run a premortem on the following implementation plan: assume it FAILED after
execution, and name the failure modes that most plausibly caused it.

PLAN (frozen):
1. bead-1: add rate limiter to `gateway/limit.go` with unit tests.
2. bead-2: wire limiter config into `gateway/config.go`.
3. bead-3: add metrics counters to `gateway/metrics.go`.
4. All three beads run in parallel to save time (disjoint files).
5. Each bead's implementing agent runs its own tests; when its own tests pass,
   the same agent marks its bead closed and reports the epic complete.
6. Ship on all-beads-closed.

Output your failure modes, ONE PER LINE, each in exactly this format:

FAIL-MODE: <short description>

List at most 5. Output only FAIL-MODE lines.
warning: Skill descriptions were shortened to fit the 2% skills context budget. Codex can still see every skill, but some descriptions are shorter. Disable unused skills or plugins to leave more room for the rest.
codex
FAIL-MODE: Parallel changes conflict through shared limiter APIs, configuration types, or integration assumptions
FAIL-MODE: Per-bead tests pass while the combined gateway build or integration behavior fails
FAIL-MODE: Agents close beads based on local success without validating cross-bead compatibility
FAIL-MODE: Rate limiter semantics are incorrect under concurrency, bursts, timing, or key isolation
FAIL-MODE: Metrics counters are wired to the wrong paths or introduce cardinality and performance problems
tokens used
8,948
FAIL-MODE: Parallel changes conflict through shared limiter APIs, configuration types, or integration assumptions
FAIL-MODE: Per-bead tests pass while the combined gateway build or integration behavior fails
FAIL-MODE: Agents close beads based on local success without validating cross-bead compatibility
FAIL-MODE: Rate limiter semantics are incorrect under concurrency, bursts, timing, or key isolation
FAIL-MODE: Metrics counters are wired to the wrong paths or introduce cardinality and performance problems
