2026-07-21 Phase 14 Agent Runtime and Context Trusted Control Plane Deep Review Record
This phase deeply reviewed 17 Agent Core/Context Engineering pages and two standard-library offline projects. It keeps course structure/order but closes runtime gaps previously stated in prose only: Context Pack dedupe cannot cross section, permission, or trust; malformed proposal/approval/tool result/checkpoint fails closed rather than crashing/continuing; and an already-satisfied goal completes without a needless write.
Agent runtime validates ActionProposal, strings, argument object, and idempotency-key types before field access; malformed input becomes policy_violation. Approval action ID/fingerprint/state version/decision/expiry receive strict type/nonnegative checks and malformed expiry becomes invalid_approval. Lookup result must exactly match fields/current ticket/base types; wrong target or malformed result becomes failed / invalid_tool_result. A confirmed closed ticket ends already_satisfied; terminal transitions clear executable pending action; recovery verifies nested observation hash/evidence/event-sequence/state-version/completed-action continuity; waiting approval requires frozen action, lookup, and observation; completed state has exactly one valid evidence path.
Context trust control plane sources identity/granted permissions from authentication/authorization context and allowed trust from application policy. Ingested/reviewed metadata assigns chunk trust/required permission/required/dedupe key. Web/user/tool body cannot self-declare trust, permission, requiredness, or equivalence.
All source/status metadata was refreshed by actual review outcome: original explanation, dynamic Provider/spec facts, validated project pages with execution_verified: 2026-07-21. Offline fixtures/state machines/cross-links/public build are coherent, not proof of IAM, Provider tokenization/model behavior, durable distributed persistence, external receipt authenticity, production approval identity, or all historical page review.
Verification: Agent demo completes with close_count=1 and receipt reuse after crash; 59 Agent tests normal/-O/-W error; Context CLI selects 5/excludes 6 at 162/170 estimated usage and 18 tests with byte-identical normal/optimized pack; website tests 46/46; build 904 source Markdown, 558 full, 346 stubs, 907 staged, 2,423 HTML; all navigation/public gates 0. Primary references are current OpenAI/Anthropic/Gemini context material, agent guidance, Temporal, OWASP/NIST, and ReAct/SWE-agent/long-context research.
Next: deep review Prompt/API and retrieval/vector courses; Obsidian visual inspection; durable SQLite/receipt/lease/concurrency/real AuthZ/Provider adapter; real tokenizer/usage/IAM ingestion metadata/task evaluation; and continued page-level metadata/source review.