intent: portable-core-contracts

[yihanzhu]

Tracks #155

Intake acceptance: #155 comment 5464340863

What changed

• Records the round-cap evidence from PR Add the v1 portable core contract validator (inactive) #183: four exact reviews found 15, then 8, then 4, then 4 actionable gaps.
• Replaces the one-large-implementation-PR constraint with dependency-ordered, independently reviewed child parts.
• Keeps one versioned contract identity and one final public command. Partial parts remain private and inactive.
• Keeps PR Add the v1 portable core contract validator (inactive) #183 frozen as evidence and possible source material; it is not accepted implementation code.

Boundary

This amendment changes only how the work is split and delivered. The five document kinds, three capability IDs, five permission IDs, v1 meanings, canonical bytes, error classes, claims-not-authority boundary, and no-live-activation outcome do not change.

Only work/portable-core-contracts/intent.md changes. No implementation code, spec, plan, issue state, label, workflow, or PR #183 state changes here.

After G1 merge, the old spec and plan are stale by design. Work remains paused until a new G2 spec-with-risk and high-risk plan are independently reviewed and operator-merged.

Proof

• Exact diff: one file, +41 / -12.
• git diff --check origin/main...e96b5b7742b1de5a8265109a75f1346696f54d66: clean.
• Intent blob: f77fc1fdd8f7af228e7f211740901b265fc545ae.
• Independent pre-PR intent review: PASS; no blockers.

Human merge only. This PR does not merge or resume PR #183.

[yihanzhu]

Codex reviewer (cross-vendor, read-only)

Reviewed-head: e96b5b7
Reviewed-base: 14988a8
reviewer: operator-default @ high

Posted verbatim by codex-review.sh (codex exec review --json --base refs/codex-review/184-59046/base in an isolated temp worktree, sandbox forced read-only). Comments only — Codex never pushes, approves, or merges.

The documentation-only amendment consistently replaces the single-PR delivery constraint with gated, dependency-ordered child parts while preserving the accepted contract and safety boundaries. No actionable regression is evident in the changed lines.