cold-audit catch from 2026-05-24 (round 6 — FINAL)
This is the closing D-day of a 24-day round-1→round-6 audit cycle.
After this commit + the 9 round-6 follow-up issue filings, no more
audit rounds. Trajectory R1=17 → R2=13 → R3=13 → R4=10 → R5=12 →
R6=14 — the method did not converge; owner chose Option A (focused
batch of most consequential items, then STOP).
Changes (6 files, +138 / -47):
**Code changes**
1. lib/cache/keys.mjs (+14/-?) — F4 P2 cache key array-field
normalization:
- New `normalizeArrayField` helper: `(Array.isArray(v) && v.length === 0) ? null : (v ?? null)`
- Applied to `tools` and `stop` in computeCacheKey
- Now `tools: []` and `tools` omitted produce IDENTICAL cache
keys (and same for `stop: []` vs omitted). ADR 0005 Amendment 2's
own claim that "[] and undefined share a cache entry" was
empirically FALSE pre-D34; round-6 reviewer verified hashes
differ. The fix makes the claim literally true at the
key-composition layer.
2. lib/providers/base.mjs (+16/-?) — F7 P2 dead error code removal:
- `QUOTA_EXHAUSTED` removed from PROVIDER_ERROR_CODES
- `RATE_LIMITED` removed from PROVIDER_ERROR_CODES
- v0.1 live codes: SPAWN_FAILED, CLI_NOT_FOUND, AUTH_MISSING,
SPAWN_TIMEOUT
- Comment block documents removal + cites ADR 0004 Amendment 3
3. lib/fallback/engine.mjs (+29/-?) — F7 P2 sibling:
- HARD_TRIGGER_CODES: QUOTA_EXHAUSTED + RATE_LIMITED removed
- SPAWN_FAILED, CLI_NOT_FOUND, AUTH_MISSING(false), SPAWN_TIMEOUT
remain
- evaluateHardTriggers HTTP-status branches KEPT (option (b)) with
forward-compat comment: "v0.1 plugins never attach statusCode;
branches reserved for v1.x when plugin gains HTTP-status parsing"
4. test-features.mjs (+93) — F4 + F7 test work:
- 4 new F4 regression tests (tools:[] vs undefined, stop:[] vs
undefined, tools:[] vs null, tools:non-empty vs undefined sanity)
- ~14 integration test code-swap edits (QUOTA_EXHAUSTED →
SPAWN_FAILED, RATE_LIMITED → SPAWN_FAILED) preserving original
hard-trigger semantic
- 2 dead unit tests for QUOTA_EXHAUSTED/RATE_LIMITED removed
(tombstone comment retained for audit trail)
**ADR amendments (docs-only, no code change)**
5. docs/adr/0004-fallback-engine.md (+12) — F7 Amendment 3:
- Documents the v0.1 hard-trigger code narrowing
- 4 live codes listed explicitly
- Captures evaluateHardTriggers HTTP-status branch retention rationale
- v1.x re-activation path: plugin gains HTTP-status parsing →
re-add codes → branches activate naturally
6. docs/adr/0005-cache-cross-provider.md (+21) — TWO amendments + 1
prior-amendment update:
- **Amendment 6 (F1 P1)**: Formal v1.x deferral of D4 streaming
singleflight. Buffered path (executeHopFn) uses cacheStore.getOrCompute
and participates in D4 fully. Streaming cache-miss path
(server.mjs:609-741) bypasses singleflight — N concurrent identical
streamers each spawn fresh. v0.1 trade-off accepted for
personal/family scale; v1.x design ADR needed for tee-streaming +
per-key inflight Map. Cross-references CLAUDE.md release_kit.
phase_rolling_mode as the deferral pattern precedent.
- **Amendment 7 (F8 P2)**: Documents the v0.1 conservative cache-key
posture: includes all IR fields including those plugins discard
(anthropic/codex/mistral drop temperature/max_tokens/top_p/stop/
tools/tool_choice at spawn). Consequence: 2 requests with different
temperature produce identical CLI output (CLI ignores) but
different cache keys → spurious miss. Trade-off justified:
spurious miss > spurious hit. v1.x forward path:
per-plugin cacheKeyFields contract extension (ADR 0002 amendment
needed). 3 implementation subtasks enumerated for the v1.x PR.
- **Amendment 2 update (F4)**: heading renamed to "Note on
null-coalescing AND array normalization"; body documents the
new normalizeArrayField helper; quotes the regression test name.
Tests: 414 → 416 (+4 F4 regression, -2 F7 dead, +0 net from F7
integration rewrites).
Pre-commit fold-in: NONE — D34 reviewer APPROVE with all 4 suggestions
non-blocking/cosmetic.
Authority:
- ADR 0005 Amendment 2 invariant restored at code level (F4)
- ADR 0005 Amendment 6 formalizes F1 streaming-singleflight deferral
per the same pattern as D22 ADR 0004 Amendment 2 soft-trigger
deferral
- ADR 0005 Amendment 7 documents F8 conservative posture as v0.1
intentional design (not an accident)
- ADR 0004 Amendment 3 narrows v0.1 trigger taxonomy (F7)
- Round-6 cold audit findings F2 / F3 / F6 / F9 / F10 / F11 / F12 /
F13 / F14 filed as GitHub issues after this commit (NOT in scope)
- CC 开发铁律 v1.6 § 10.x — final round of the audit cadence
Reviewer (Iron Rule v1.6 § 10.x Mode A, fresh-context opus, independent
of drafter): APPROVE. Critical depth checks:
- B5 over-normalization: verified `normalizeArrayField` only applies
to `tools` and `stop`; `response_format: {}` and `tool_choice: ''`
unaffected (Array.isArray guard)
- C10 test cleanup: 21 references reconciled (3 tombstone, 18
rewrites/removals); integration test rewrites preserve hard-trigger
semantics (QUOTA_EXHAUSTED → SPAWN_FAILED is also a hard trigger,
so fallback advancement behavior unchanged)
---
**End of audit cycle.** 24 D-days shipped from D10 (P1 hardening) through
D34 (final batch). 6 cold-audit rounds executed; 78+ findings raised;
~50 closed via implementation; ~28 deferred to GitHub issues / v1.x
ADR amendments. v0.1 tag remains explicit-maintainer-action per
phase_rolling_mode policy.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Architecture Decision Records — OLP
This directory holds the OLP Architecture Decision Records (ADRs) — short documents that capture the why behind structural choices.
Read these before proposing governance, plug-in contract, IR, fallback, cache, or provider-inclusion changes.
Numbering
ADRs in OLP start at 0001 (the project's founding decision). OLP did not inherit the 0001 placeholder convention OCP used; the project starts on a fresh numbering line.
New ADRs increment from the highest existing number. Filenames are NNNN-<short-slug>.md.
Index
| ADR | Title | What it covers |
|---|---|---|
| 0001 | Project Founding | Why OLP exists (the 2026-06-15 Anthropic billing-split trigger), mission + non-mission boundaries, explicit supersession of OCP ADR 0005 "No Multi-Provider". |
| 0002 | Plugin Architecture for Providers | The lib/providers/<name>.mjs plug-in model, the Provider contract (name / models / auth / spawn / estimateCost / quotaStatus / healthCheck / hints), static in-tree registry, why-not full external plugin discovery. |
| 0003 | Intermediate Representation (IR) Design | The OLP-internal canonical request/response shape between the OpenAI-compat entry surface and each provider plugin. v1.0 IR fields, IR-vs-OpenAI-vs-native-provider three-shape model, IR is not exposed externally. |
| 0004 | Fallback Engine Semantics & Safety | Trigger taxonomy (Hard / Soft / Deterministic-deferred / Cost-aware-deferred), idempotent-failure safety (first-chunk rule), chain advancement one-at-a-time, observability headers. |
| 0005 | Cache Layer Cross-Provider Design | Cache key composition over (provider, model, messages, …), per-model isolation, D1+D2+D3+D4 port from OCP v3.13.0, cross-provider fallback cache behaviour (correct miss). |
| 0006 | Provider Inclusion / Exclusion + Risk-Tier Framework | The 4-tier classification (A excluded by default / B explicit consent / C opt-in / D eligible-for-default-enabled), Candidate-vs-Enabled distinction, current v0.1 candidate inventory (0 Enabled), Antigravity exclusion rationale (named prohibition + no cost advantage + reinstatement friction; pending primary-source pin), consent UX, future provider addition procedure. |
When to write a new ADR
Open one whenever:
- A structural rule is being added or changed (e.g., new IR field, new trigger type, new cache-key composition).
- A new provider plugin is being proposed (per ADR 0002 + ADR 0006 — ADR is a hard prerequisite for plugin merge).
- A decision encodes a lesson from an external event (provider policy change, drift incident).
- A future contributor reading the code alone could plausibly undo or re-litigate the choice.
Skip ADRs for routine implementation choices (algorithm pick, naming) — those belong in commit messages.
Format
Keep ADRs short — Context / Decision / Consequences / Alternatives is the standard skeleton. Cite incidents, PRs, or commits where useful. Length per ADR ~150–250 lines; longer than that, split.