docs+fix+test: D36 — pre-Phase-2 batch #2 (issues #2 #5 #6 #13 #14 #15)

Second batch of pre-Phase-2 cleanup. 6 GitHub issues closed in one
cohesive docs/governance commit with 1 small code addition (#2 debug
log line in server.mjs) and 1 transcript artifact (#15 new file).

Changes (7 files modified, 1 file created, +470 / -13):

**Code changes**

1. **#2 — cache_control partial-noop debug log** (server.mjs)

   ADR 0005 § D2 says: "for non-Anthropic targets, the bypass markers
   are noop'd (logged once per request at debug level so users can
   see they were ignored)". Pre-D36 logEvent fired only when an
   Anthropic hop actually bypassed; non-Anthropic hops with markers
   present were silently noop'd.

   New 12-line block in handleChatCompletions right after
   hasCacheControlMarkers is computed. Fires logEvent('debug',
   'cache_control_partial_noop', { chain: [<provider names>],
   marker_count: <count> }) when:
   - hasCacheControlMarkers === true AND
   - chain.some(hop => hop.provider !== 'anthropic')

   Fires at most once per request (top-level if, not in a loop). No
   log when no markers, or when every chain hop is Anthropic. The
   existing cache_bypass debug log inside shouldBypassCacheForHop is
   untouched.

   marker_count sums body-side and IR-side extractCacheControlMarkers
   results. At v0.1 the IR term is structurally 0 (openAIToIR strips
   cache_control); inline comment marks this as a revisit point for
   the future ADR 0003 amendment that activates cache_control in the
   IR whitelist.

**Documentation amendments**

2. **#5 — ADR 0002 vibe.mjs → mistral.mjs** (docs/adr/0002-plugin-architecture.md)

   § Decision filesystem layout: `vibe.mjs` corrected to
   `mistral.mjs` (file named after provider key per the convention
   anthropic.mjs/codex.mjs). The vibe.mjs entry was an early-draft
   naming choice that never landed. Amendment 5 prepended above
   Amendment 4 documenting the filename correction + explicit
   convention statement (file named after provider key, not CLI
   binary) for future contributors.

3. **#6 — mistral.mjs A5 flip + ALIGNMENT.md table update**
   (lib/providers/mistral.mjs + ALIGNMENT.md)

   Pre-D36: header A5 (model flag) status was UNPINNED-D-later-verifies
   but function body lines 376-380 said CONFIRMED-NOT-APPLICABLE
   (DeepWiki enumeration already confirmed `--model` does not exist
   on vibe CLI). Header now reflects CONFIRMED-NOT-APPLICABLE with
   DeepWiki citation (DOCS-4). ALIGNMENT.md Speculative-Candidate
   table mistral row: A5 removed from UNPINNED list; A4, A6, A7, A8
   preserved with parenthetical descriptions intact. No code change
   to function body (already correct).

4. **#13 — /v1/models alias entries — ALIGNMENT.md + spec-pin
   governance** (ALIGNMENT.md + docs/openai-spec-pin.md)

   Round-6 F10 flagged D27 F15's alias entries on /v1/models as
   borderline Rule 2(b) violation (OpenAI spec does not enumerate
   aliases as separate entries). Option C selected: keep current
   behavior, document the controlled deviation.

   - ALIGNMENT.md: new "Controlled deviations (entry-surface scope)"
     subsection under "Class-specific Exceptions". Entry 1 documents
     the /v1/models alias deviation with rationale (D27 F15
     onboarding), formal contract reference, field constraints
     (owned_by matches canonical, created matches canonical, no
     invented fields), SPOT reference (getAliasMap()), and re-
     evaluation trigger.
   - docs/openai-spec-pin.md: new alias-surfacing subsection under
     GET /v1/models with full 4-field contract table (id/object/
     created/owned_by), rationale, sourcing explanation, forward
     path.
   - server.mjs handleModels: NO CHANGE — behavior preserved.

5. **#15 — Anthropic v2.1.89 transcript artifact**
   (docs/provider-audits/anthropic.md NEW; ALIGNMENT.md +
   lib/providers/anthropic.mjs cross-references)

   Round-6 F12: ALIGNMENT.md anthropic row pin (v2.1.89, observed at
   D4) cited the plugin header; plugin header cited the observation
   date but no transcript. Circular per Rule 1 ("observed behaviour,
   transcript attached").

   New file docs/provider-audits/anthropic.md (single living artifact,
   not version-specific):
   - Date of capture: 2026-05-24
   - Observed `claude --version`: 2.1.132 (Claude Code) — captured
     today on the project maintainer's primary workstation
   - Plugin-pinned version: @anthropic-ai/claude-code v2.1.89 (from
     D4 implementation pin in ALIGNMENT.md Provider Authority Pins)
   - Version drift: honestly documented — pin is v2.1.89, live is
     v2.1.132, drift within tolerance, re-audit triggers named
   - Sample invocation: `claude -p --output-format text --no-session-
     persistence --model <model> [--debug]`
   - Flag-surface table: 5 OLP-consumed flags verbatim from
     `claude -p --help` (-p / --output-format / --no-session-
     persistence / --model / --debug)
   - Citation cross-references back to ALIGNMENT.md + plugin header

   ALIGNMENT.md anthropic row: appended "transcript artifact: docs/
   provider-audits/anthropic.md (captured 2026-05-24)" — closes the
   circular citation.

   lib/providers/anthropic.mjs header: 5-line pointer to the artifact
   with version numbers stated explicitly.

**Tests** (test-features.mjs): 424 → 431 (+7):

- #2 partial-noop log ×3:
  - Suite 9f case 1: markers + mixed chain → fires once at level=debug
  - Suite 9f case 2: no markers → suppressed
  - Suite 9f case 3: anthropic-only chain → suppressed

- #14 cache_control slot determinism ×4:
  - #14a: markers-present IR produces different key from no-markers IR
  - #14b: same IR computed twice yields identical key
  - #14c: two independently-constructed IRs with identical payloads
    yield same key
  - #14d: both top-level and content-array-nested markers affect the key

  All 4 tests call computeCacheKey directly on hand-built IRs
  (bypassing openAIToIR which strips markers at v0.1). Per ALIGNMENT.md
  Rule 2 (No Invention), no sortMarkers helper added — the slot is
  dead-code at v0.1 and shipping a helper without a caller authority
  would be invention. Test comment documents the forward-activation
  contract.

Pre-commit fold-in (per evidence-first checkpoint #4):
- **D36 reviewer flagged marker_count latent double-count risk**
  (Suggestion #1, non-blocking). The sum at server.mjs:435-437 is
  safe at v0.1 (IR term structurally 0) but will 2× when a future
  ADR 0003 amendment activates cache_control in the IR whitelist.
  Folded in a 4-line comment marking the revisit point.

Two other non-blocking reviewer suggestions not folded:
- Test count brief-vs-deliverable discrepancy (4 not 3 for #14) is
  informational — the 4-test variant is strictly better (covers
  content-array nesting which is a real extractCacheControlMarkers
  contract path).
- Recapture-procedure git-add reminder in anthropic.md is low-priority
  procedure documentation.

Authority:
- ADR 0005 § D2 — cache_control partial-noop debug log requirement (#2)
- ADR 0002 § Decision filesystem layout (Amendment 5) — plugin file
  naming convention (#5)
- DeepWiki vibe CLI flag enumeration — A5 not applicable (#6)
- ALIGNMENT.md Rule 2(b) + docs/openai-spec-pin.md GET /v1/models —
  alias controlled deviation (#13)
- ADR 0005 cache key stability invariant + ADR 0003 forward-compat —
  cache_control slot determinism contract (#14)
- ALIGNMENT.md Rule 5 (observed behaviour, transcript attached) +
  Provider Authority Pins anthropic row — transcript artifact (#15)
- CC 开发铁律 v1.6 § 10.x — independent fresh-context reviewer
- CLAUDE.md release_kit_overlay phase_rolling_mode — D36 under
  "Unreleased" against Phase 2; no version bump

Reviewer (Iron Rule v1.6 § 10.x Mode A, fresh-context opus,
independent of drafter): APPROVE. Critical depth checks:
- #2: gate condition fires only on (markers AND non-anthropic-hop);
  pre-existing cache_bypass log inside shouldBypassCacheForHop
  untouched
- #5: lib/providers/ directory verified — mistral.mjs exists,
  vibe.mjs does not exist
- #6: mistral.mjs spawn-site body comment (lines 376-380) already
  CONFIRMED-NOT-APPLICABLE pre-D36 and unchanged in this diff
- #13: server.mjs handleModels unchanged (verified via grep)
- #14: all 4 tests pass against current code; no sortMarkers helper
  shipped (Rule 2 No Invention honored)
- #15: live `claude --version` independently run by reviewer →
  matches artifact (2.1.132); all 5 OLP-consumed flags independently
  verified present in `claude -p --help`
- Hygiene: 0 hits for personal markers, home paths, OAuth tokens,
  internal IPs across all 8 files
- 431/431 tests pass in reviewer's independent npm test run

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

ALIGNMENT.md

@@ -56,7 +56,7 @@ A plugin satisfying all five conditions is a **Speculative-Candidate**. It is Ru
 | Plugin file | Phase | Labelled UNPINNED assumptions |
 |---|---|---|
 | `lib/providers/codex.mjs` (D6) | Phase 2 | A3 (auth token field name), A4 (NDJSON event schema) |
-| `lib/providers/mistral.mjs` (D8) | Phase 3 | A4 (JSON output event schema), A5 (model flag), A6 (exact model IDs), A7 (streaming vs json output mode), A8 (stdin prompt passing) |
+| `lib/providers/mistral.mjs` (D8) | Phase 3 | A4 (JSON output event schema), A6 (exact model IDs), A7 (streaming vs json output mode), A8 (stdin prompt passing) |
 
 The Anthropic plugin (`lib/providers/anthropic.mjs`, D4–D5) is NOT in this class — its CLI authority is pinned (`@anthropic-ai/claude-code` v2.1.89 per the Provider Authority Pins table above). It conforms to the standard Rule 4 path.
 
@@ -76,7 +76,7 @@ Each provider plugin in `lib/providers/<name>.mjs` is governed by the underlying
 
 | Provider key | Provider CLI | Audit pin (TBD on Phase-1 spawn) | Risk Tier (see § Risk Tier Framework) |
 |---|---|---|---|
-| `anthropic` | `claude -p` from `@anthropic-ai/claude-code` | inherits OCP's `cli.js` 2.1.89 audit pin at fork; OLP-side pin: `@anthropic-ai/claude-code` v2.1.89 (observed at D4 — `lib/providers/anthropic.mjs` header). Re-evaluate post-2026-06-15 per One-shot Triggered Audit above. | D (pre-2026-06-15) / re-evaluate post-2026-06-15 |
+| `anthropic` | `claude -p` from `@anthropic-ai/claude-code` | inherits OCP's `cli.js` 2.1.89 audit pin at fork; OLP-side pin: `@anthropic-ai/claude-code` v2.1.89 (observed at D4 — `lib/providers/anthropic.mjs` header); transcript artifact: `docs/provider-audits/anthropic.md` (captured 2026-05-24). Re-evaluate post-2026-06-15 per One-shot Triggered Audit above. | D (pre-2026-06-15) / re-evaluate post-2026-06-15 |
 | `openai` | `codex exec --json` from OpenAI Codex CLI | Codex CLI reference page: https://developers.openai.com/codex/cli/reference (retrieved 2026-05-23 — §§ "codex exec [flags] PROMPT", "--json / --experimental-json", "--model, -m"; D6 WebFetch-verified reachable). Secondary authority: https://developers.openai.com/codex/cli/features §§ "Supported Models", "Automation". | D |
 | `mistral` | `vibe --prompt --output streaming` from Mistral Vibe CLI | Mistral Vibe terminal quickstart: https://docs.mistral.ai/mistral-vibe/terminal/quickstart (retrieved 2026-05-23 — § "--prompt flag triggers programmatic mode; --output selects format (text, json, streaming)"; D8 WebFetch-verified reachable). `--output streaming` selected (not `--output json`) because DOCS-1 § "Output Format Options" explicitly states `json` emits a single blob at the end — incompatible with the line-buffered NDJSON parser in `lib/providers/mistral.mjs`. `streaming` emits newline-delimited JSON per message, which the parser requires. See plugin header (lines 360-369). Configuration authority: https://docs.mistral.ai/mistral-vibe/terminal/configuration (§§ auth file `~/.vibe/.env`, `MISTRAL_API_KEY` env var). | D |
 | `grok` | `grok -p --output-format streaming-json` (xAI Build) | TBD at Phase 8+ enable | C |
@@ -198,6 +198,16 @@ In addition to the recurring 14 May audit below, the following one-shot audits a
 
 Any future Rule 3 deviation lands here as a numbered exception with PR link, reviewer, and rationale.
 
+### Controlled deviations (entry-surface scope)
+
+This subsection enumerates entry-surface behaviours that intentionally extend beyond the OpenAI `/v1/chat/completions` and `/v1/models` specifications. Each entry is a **controlled deviation**: a documented, reviewed extension that ships under Rule 2(b)'s spirit (no invention without an authority) by treating `docs/openai-spec-pin.md` as the formal contract for the deviation. The contract there is binding; this list is the index.
+
+1. **`/v1/models` alias entries** — *Issue #13 (D36)*. The OpenAI `/v1/models` specification (https://platform.openai.com/docs/api-reference/models/list) enumerates one entry per canonical model ID. OLP's `/v1/models` response additionally surfaces alias entries (e.g. `claude`, `sonnet`, `opus`, `haiku` alongside the canonical `claude-opus-4-7` / `claude-sonnet-4-6` / `claude-haiku-4-5`). Alias entries use `id: <alias-string>`, `object: 'model'`, `owned_by: <same provider key as canonical>`, and `created: <same timestamp as canonical target>` per D27 F15.
+   - **Rationale:** D27 F15 — onboarding friction when clients configured with `model: 'sonnet'` (a common alias used by Anthropic's own CLI and many OpenClaw-class tools) received an empty `/v1/models` response that did not surface the alias as a callable model id. Surfacing the alias makes the discovery loop usable for OpenAI-compatible clients with alias-aware UX.
+   - **Formal contract:** `docs/openai-spec-pin.md § GET /v1/models` is the authoritative shape for this deviation. The deviation is bounded by: (a) `owned_by` matches the canonical target's `owned_by`; (b) `created` matches the canonical target's `created`; (c) no fields are invented beyond the four OpenAI-spec entry fields (`id`, `object`, `created`, `owned_by`); (d) alias enumeration is sourced from `models-registry.json` via `getAliasMap()` — the SPOT — not hard-coded in `server.mjs`.
+   - **Compliance posture:** The deviation extends the response listing but does not invent fields or change field semantics. The risk vector is a hypothetical OpenAI-compatible client that asserts "one entry per canonical model" and trips on the extras; this risk is mitigated by the fact that aliases use the same `object: 'model'` shape, and any client iterating `data[]` simply sees more entries — none of which are malformed. No invention beyond what OpenAI's own `id` field already accepts as a free-form string.
+   - **Re-evaluation trigger:** Annual audit (14 May) re-checks whether OpenAI has shipped a formal alias-listing extension to `/v1/models` (in which case OLP migrates to it), or whether the deviation should be retired (in which case clients with alias-aware UX must migrate to the canonical IDs via the alias table).
+
 ---
 
 ## Amendment Procedure