feat: allow process revision evidence

[tom-sapletta-com]

Adds one optional bounded process_revision field to the closed v2 sample contract for honest version-over-version comparisons.

[ifuri-validator-agent]

Deterministic Validator approval for exact head c43e1eaac0a600c8a52d73a6639756353e00369c.

Ticket: ticket-012
Correlation ID: estimation-pr-9-ticket-012
Model: zai/glm-5.3
Advisory LLM review: LLM_UNAVAILABLE
Reason: litellm.RateLimitError: RateLimitError: ZaiException - Usage limit reached for 5 hour. Your limit will reset at 2026-08-30 20:04:38
This approval rests on the deterministic checks alone; no advisory opinion was recorded for this head.
Merge will be attempted after this approval when explicitly authorized.

Decision record (recomputable)

DECISION D-012-5548
TICKET ticket-012
HEAD_SHA c43e1eaac0a600c8a52d73a6639756353e00369c
CORRELATION_ID estimation-pr-9-ticket-012
ACTOR agent:ifuri-validator-agent[bot]
APPLIED_RULE P-CORE-015
INPUT author_login = "tom-sapletta-com"
INPUT observed_checks = ["governance / enforce=PASS","windows-governance=PASS","test=PASS","governance / remote lifecycle=PASS"]
INPUT required_checks = ["test","windows-governance"]
INPUT required_checks_source = "protected registry (governance/required-checks.json)"
INPUT reviewer_login = "ifuri-validator-agent[bot]"
INPUT superseded_checks = []
VERDICT APPROVE AUTHORITY DETERMINISTIC
REJECTED REQUEST_CHANGES BECAUSE NO_UNSAFE_CHANGE_REASON_FOUND
ADVISORY llm_verdict = "" MODEL "zai/glm-5.3"
ASSERT VERDICT_AUTHORITY != "ADVISORY"