P1-02: AttentionCapsule as the real model product (closes #25) #196

2026-09-07T09:05:17+01:00

conductor commented

2026-09-07 09:05:17 +01:00

Implements issue #25 per the governed pipeline.

What

Capsule fidelity: trace v4 additive fields — capsule_messages (the EXACT messages sent to runtime.run), capsule_content_hashes (per-block SHA-256), capsule_token_count (re-measured post safety-override decoration). The logged capsule is now provably what the model received.
No token_count-only fake budgeting: create_capsule/to_prompt deprecated (DeprecationWarning), zero live callers verified.
num_ctx: propagated as capsule.token_count + completion_reserve (not the raw window) — admission constraint respected by the runtime.
Safety-override re-measure: after decoration mutates the user block, block.tokens and capsule.token_count are re-measured so the capsule stays truthful.
ContributionBlock.to_dict includes content (was omitted, making log capsules unverifiable).
Authority map: attention_capsule.py flipped to retain-authority under ContextBroker.

Research round V3

INWARD: capsule IS broker-rendered (P0-03 did most wiring); gaps were evidence/integrity only.
OUTWARD: [OI] Assistants has the same estimation bug we fixed (community-reported "max_prompt_tokens exceeded, barely, consistently"); LangSmith captures at transport wrapper (I-2 follow-up); SHA-256 per-block integrity matches frontier agent-telemetry (arXiv:2608.16178); Anthropic count_tokens is the gold standard (I-1 follow-up for #29 cloud providers).
INNOVATION: 4 candidates evaluated; none warrant changing the shipped implementation; 2 flagged as follow-up issues.
SYNTHESIS: ship as-is; #28 must inherit the single num_ctx computation site and the re-measure invariant.

Governed-pipeline evidence

TDD red->green: 16 frozen tests; suite 604+84 (baseline 588); zero regressions.
Spec gate: PASS (9/9 criteria evidenced). Quality gate: Approved (1 important + 5 minor, discharges documented as follow-ups).
canary_p1_02 registered same-commit; henxels 0; ruff clean; pyright errors < baseline.

Closes #25.

Implements issue #25 per the governed pipeline. ## What - Capsule fidelity: trace v4 additive fields — capsule_messages (the EXACT messages sent to runtime.run), capsule_content_hashes (per-block SHA-256), capsule_token_count (re-measured post safety-override decoration). The logged capsule is now provably what the model received. - No token_count-only fake budgeting: create_capsule/to_prompt deprecated (DeprecationWarning), zero live callers verified. - num_ctx: propagated as capsule.token_count + completion_reserve (not the raw window) — admission constraint respected by the runtime. - Safety-override re-measure: after decoration mutates the user block, block.tokens and capsule.token_count are re-measured so the capsule stays truthful. - ContributionBlock.to_dict includes content (was omitted, making log capsules unverifiable). - Authority map: attention_capsule.py flipped to retain-authority under ContextBroker. ## Research round V3 - INWARD: capsule IS broker-rendered (P0-03 did most wiring); gaps were evidence/integrity only. - OUTWARD: [OI] Assistants has the same estimation bug we fixed (community-reported "max_prompt_tokens exceeded, barely, consistently"); LangSmith captures at transport wrapper (I-2 follow-up); SHA-256 per-block integrity matches frontier agent-telemetry (arXiv:2608.16178); Anthropic count_tokens is the gold standard (I-1 follow-up for #29 cloud providers). - INNOVATION: 4 candidates evaluated; none warrant changing the shipped implementation; 2 flagged as follow-up issues. - SYNTHESIS: ship as-is; #28 must inherit the single num_ctx computation site and the re-measure invariant. ## Governed-pipeline evidence - TDD red->green: 16 frozen tests; suite 604+84 (baseline 588); zero regressions. - Spec gate: PASS (9/9 criteria evidenced). Quality gate: Approved (1 important + 5 minor, discharges documented as follow-ups). - canary_p1_02 registered same-commit; henxels 0; ruff clean; pyright errors < baseline. Closes #25.

conductor added 6 commits 2026-09-07 09:05:18 +01:00

feat(p1-02): capsule content logging + message capture + legacy deprecation (#25 ) d0550b6104

feat(p1-02): safety-override re-measure + num_ctx budget propagation (#25 ) ec0cf7acab

feat(p1-02): trace v4 capsule fidelity fields (#25 ) 8ff6a83281

feat(p1-02): capsule authority map + docs (#25 ) 90bcd5982e

feat(p1-02): canary + CI registration (#25 ) 96e42aee65

docs(p1-02): plan completion record (#25 )

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