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feat(anthropic): stream-json + --system-prompt (ADR 0009 Amendment 1)

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Replaces claude -p --output-format text spawn with claude (no -p)
--output-format stream-json --verbose --system-prompt.

Authority:
- claude CLI v2.1.104 § --output-format stream-json (verified 2026-05-27
  empirical test on PI231: NDJSON event stream emits without -p)
- claude CLI v2.1.104 § --verbose (required companion to stream-json)
- claude CLI v2.1.104 § --system-prompt (full default-prompt replacement,
  suppresses env-block + tool descriptions)
- claude CLI v2.1.104 § --no-session-persistence
- OLP ADR 0009 Amendment 1 — decision lock + value re-anchoring
- OLP ALIGNMENT.md Rule 1 — provider plugin authority citation

Four orthogonal values delivered:
1. Hallucination fix: model no longer claims server-side cwd / OS /
   tools (verified bot self-check produces "I don't have local env"
   instead of "/home/tlab/olp")
2. ~64% per-request cost reduction: empirical Sonnet 4.6
   $0.0216 → $0.0078, from ~30% input-token reduction (16,601 → 10,700)
3. NDJSON observability: rate_limit_event + usage + cache stats per
   request now available (future audit/dashboard work)
4. Possible 30-60 day bridge for Anthropic 2026-06-15 billing split
   (uncertain per P0 spike — third-party-app classification clause)

Per ADR 0009 Amendment 1 § "Caveats": this is NOT a substitute for
Phase 7 @anthropic-ai/sandbox-runtime work; sandbox remains required
for any cloud / multi-tenant deployment.

Cache key composition unchanged (ADR 0005 IR-based hash; on-the-wire
format is internal to the provider plugin).

Tests: 771 → 790 (+19 new in Suite 41; 9 existing mocks updated to
emit valid NDJSON stream_event format instead of raw text).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
taodeng
2026-05-27 22:29:17 +10:00
co-authored by Claude Opus 4.7
parent 40f9453d88
commit 97e7d16585
4 changed files with 794 additions and 104 deletions
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CHANGELOG.md
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@@ -4,6 +4,10 @@ All notable changes to OLP land here. Per `CLAUDE.md` release_kit overlay, this
## Unreleased
### Phase 6 D-day — stream-json transport for Anthropic provider (ADR 0009 Amendment 1)
- feat(anthropic): stream-json output + --system-prompt suppression of env-block / tool descriptions (ADR 0009 Amendment 1). Cuts ~64% per-request cost on Sonnet 4.6 via 30% input-token reduction ($0.0216 → $0.0078), fixes bot self-check hallucination (model no longer claims server cwd / OS / tool names), exposes rate_limit + usage events from NDJSON for future audit/dashboard work. Per-key API + cache + audit semantics unchanged. claude CLI v2.1.104 verified; warn if claude-version outside v2.1.100–v2.1.149.
### F4 — `bin/olp.mjs` + `olp-plugin/index.js` migration to `quota_v2` shape
**Codex post-v0.5.0 review Q4.** Both CLI surfaces (`olp usage` and `/olp usage`) previously fell through to "no quota api" for every provider because they read the legacy `body.quota` shape, which never carries `percent_used` or meaningful `available` data. Now that the server (v0.5.0+) emits `body.quota_v2` per ADR 0008 Amendment 2, both surfaces prefer `quota_v2` and fall back to legacy `quota` on older servers.