chore(release): define the IID and atom URI release train

[kamescg]

Summary

P00 of the iid-v1.1.0-alpha release train (umbrella PR #15). Establishes the shared planning packet and release tooling foundation that every semantic-lane (P01–P05) and contract-lane (P06–P09) child PR branches from.

• Adds the .planning/iid-v1.1.0-alpha packet: PR stack, target package contracts, integration/release runbook, and acceptance matrix. Records the authoritative private reference source (0xIntuition/intuition-v2 at 8b9e9aa11, PRs #914/#1115) for the iid-spec/iid/iid-registry ports.
• Restores the private root package version from the invalid semver v1.1.0-alpha to 0.0.0; the release train is labeled by the branch/PR name.
• Adds scripts/package-registry.mjs as the single source of package order and packaging metadata, consumed by pack-dry-run and smoke-tarballs (removes the duplicated hard-coded ten-package arrays). Adds bun run registry:check.
• Adds topological-publish-order assertions over runtime internal dependencies and exact-internal-version assertions over all dependency fields.
• Supports documentation-only packages in tarball assertions, ahead of the iid-spec package in P01.
• Adds a PR template with the release-train fields.

Package impact

Package	Change
(root, private)	version restored to 0.0.0; new registry:check script
all ten public packages	none — tooling assertions only

Target versions

n/a — no publishable package manifests change.

Identity impact

Identity impact: none — existing golden bytes unchanged

Fixture impact

none

Contract artifact

n/a

Rollout notes

• Gate for the train: semantic and protocol child PRs branch from update/v1.1.0-alpha only after this merges.
• Validation run locally on the P00 head: frozen install, build, typecheck, test, check, schema/generation checks, guard:supply-chain, pack:dry-run, and the full clean-room smoke:tarballs — all passing, ten-package smoke behavior unchanged.

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