cold-audit catch from 2026-05-24 (round 3)
3 round-3 P3 items batched per IDR. Mixed surfaces but all single-severity
and conceptually independent.
Changes (5 files, +324 / -17):
1. lib/ir/types.mjs — F8 validator extension (+28):
- `response_format`: must be object with string `.type` (undefined/omitted
accepted; null, non-object, missing-type all rejected). Forward-compat:
accepts any string for type so future OpenAI additions (json_schema,
etc.) flow through without schema bump.
- `tool_choice`: string form 'auto'/'none'/'required' OR object form
`{type:'function', function:{name:string}}`. All other shapes rejected.
Pre-D27 the validator silently accepted any value; the Anthropic plugin's
`if (irRequest.response_format?.type === 'json_object')` would no-op on
a malformed string payload.
2. docs/adr/0005-cache-cross-provider.md — F10 Amendment 4 (+8):
- Documents the IR-vs-body detection ambiguity in § D2: the ADR text
reads as if detection happens on the IR, but `openai-to-ir.mjs` strips
`cache_control` from messages per ADR 0003's whitelist policy, so
IR-side detection is structurally always empty at v1.0
- Documents the actual v1.0 detection mechanism (server.mjs side-channels
into the raw body)
- Documents the cache key `cache_control` slot's always-null status as
forward-compat (when a future ADR 0003 amendment adds cache_control
to IR, the slot will start carrying meaningful data without schema bump)
- Explicit "no code change" — F10 is docs-only
3. lib/providers/index.mjs — F15 alias map export (+11):
- `getAliasMap()` returns `new Map(_aliasMap)` — defensive copy preventing
caller mutation of the module-private alias map
- JSDoc documents use case + defensive-copy intent
4. server.mjs — F15 /v1/models alias surfacing (+25/-7):
- `handleModels` now emits TWO loops: canonical entries first (preserves
existing client expectations), then alias entries via `getAliasMap()`
- Each alias entry has the same 4 OpenAI-spec fields (id/object/created/
owned_by) — no invented fields per ALIGNMENT Rule 2(b)
- Disabled-provider alias non-leak: `loadedProviders.has(providerName)`
gate skips aliases whose target provider is not currently enabled
- createdTs reused (same per-request timestamp across all entries)
- JSDoc updated to document new ordering + F15 origin
5. test-features.mjs — +269 / +18 new tests:
- F8: 13 tests covering response_format (object/string/non-object/missing-
type) + tool_choice (string variants/object variants/wrong type/no name)
- F15: 5 tests covering canonical-first ordering, alias presence/count,
disabled-provider non-leak (with anthropic-only enabled, mistral and
openai aliases must NOT appear), Rule 2(b) shape conformance
Tests: 358 → 376 (+18). All pass on Node 20.
Reviewer notes (Iron Rule v1.6 § 10.x Mode A, fresh-context opus, independent
of drafter): APPROVE. Critical checks verified:
- F8: all 9+ tool_choice rejection axes traced through code (including
partial-function-object edge cases). The code handles them correctly even
where tests don't exercise (non-blocking gap).
- F10: amendment substantively correct. One wording-precision note: the
amendment says "body only" but the actual code is an OR-disjunction
(hasCacheControl(ir) || extractCacheControlMarkers(body.messages)).
Functionally identical at v1.0 because IR strips markers, so first
disjunct is always false. Forward-compat by construction.
- F15: disabled-provider non-leak verified by manual trace with
anthropic-only enabled — mistral/openai aliases correctly filtered out
by `loadedProviders.has(providerName)` gate. Test 17e explicitly
asserts this.
- F15+D17 round-trip: client GET /v1/models → sees alias entry → POSTs
with alias → getProviderForModel resolves via same _aliasMap → cache
key uses canonical → response works. Both surfaces read the same Map
(SPOT).
- F15+D23 cacheable interaction: cacheable opt-out doesn't suppress
alias surfacing in /v1/models — cacheable is about cache-write behavior
while discovery should still surface enabled providers. Intentional.
Authority:
- ADR 0003 § Optional fields (response_format + tool_choice IR shape)
- OpenAI Chat Completions API spec (the field semantics)
https://platform.openai.com/docs/api-reference/chat/create
- ADR 0005 § D2 + Amendment 4 (F10's own amendment landing here)
- ADR 0002 § Loading model + D17 getProviderForModel SPOT (F15's alias
origin)
- ALIGNMENT.md Rule 2(b) — no invented OpenAI fields
- CC 开发铁律 v1.6 § 10.x — Round-3 Cold Audit caught all 3
Follow-up items (reviewer's non-blocking suggestions, NOT in this PR):
- F8 micro-tests for null/boolean/partial-function inputs (code handles;
test gap only)
- F10 wording precision on OR-disjunction
- Nested-describe wrapper quirk in test-features.mjs (pre-existing
structural issue; D26/D27 describes are children of Suite 16 wrapper).
Cleanup in a future hygiene pass.
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.