feat(subactor): implement delegation envelope conformance and self-healing e2e (ticket-051)

[MatthiasLew]

Implements Subactor delegation envelope conformance validation and closed-loop self-healing verification simulation for ticket-051.

[MatthiasLew]

Validator verification: remote lifecycle check PASS, test suite passing, GOV-PASS clean.

[ifuri-validator-agent]

Deterministic Validator approval for exact head 580b8c90a0ad8c00d8b78e0dcdf65b83118d57e6.

Ticket: ticket-051
Correlation ID: data2dsl-pr-46-ticket-051
Model: zai/glm-5.3
Reviewed diff chunks: 4
Advisory LLM verdict: APPROVE
Advisory summary: Reviewed all 4 diff chunk(s). Documentation and example fixtures chunk for ticket-051: changelog, TODO, examples/06 self-healing fixtures, and ticket index updates. No security or correctness issues visible in this chunk. | Chunk 2 of 4 contains governance/ticket documentation (ticket-048/049/050 closures, new ticket-051 scaffold, intent., preprompt, changelog) plus CLI parser additions for new validate-envelope and simulate-healing subcommands. Documentation is consistent and the CLI changes are additive with no security issues. No failed checks in test results. | Chunk adds validate-envelope and simulate-healing CLI commands, a new data2dsl_subactor module for envelope validation and closed-loop self-healing simulation, and supporting e2e tests. Code is well-structured, validates required fields/roles/authority, and the simulation is deterministic with no execution of untrusted code. | Chunk 4 of 4 contains test code for the subactor delegation envelope validation and closed-loop self-healing simulation. Tests cover valid text/JSON envelope parsing, missing required fields, invalid role, invalid authority, and CLI success/failure paths. No production logic is in this chunk; no security issues identified.
Advisory findings: none
The LLM output above is advisory and was not used as the approval trust root.
Merge will be attempted after this approval when explicitly authorized.

Decision record (recomputable)

DECISION D-051-1883
TICKET ticket-051
HEAD_SHA 580b8c90a0ad8c00d8b78e0dcdf65b83118d57e6
CORRELATION_ID data2dsl-pr-46-ticket-051
ACTOR agent:ifuri-validator-agent[bot]
APPLIED_RULE P-CORE-015
INPUT author_login = "MatthiasLew"
INPUT observed_checks = ["governance / remote lifecycle=PASS"]
INPUT required_checks = ["governance / remote lifecycle"]
INPUT required_checks_source = "protected registry + GitHub applied rules (env/request)"
INPUT reviewer_login = "ifuri-validator-agent[bot]"
VERDICT APPROVE AUTHORITY DETERMINISTIC
REJECTED REQUEST_CHANGES BECAUSE NO_UNSAFE_CHANGE_REASON_FOUND
ADVISORY llm_verdict = "APPROVE" MODEL "zai/glm-5.3"
ASSERT VERDICT_AUTHORITY != "ADVISORY"