Development and bootstrap plan validation

This delivery finalizes the cross-component design at soft3 base 4820c3d032c3c336d725f18e7b3fb13816eeb128, coordinated with Rs base 01d82825d93129401df064ff3e0c3adae04d852a and Trident planning head 68b5d5dcf2f0b38ea42e043e6c5556b276b88dc5. Exact reviewed document bytes and the validation invocation are retained in each repository's validation.json.

check-docs.py checks changed-path scope, whitespace, new local links, the coordinated branch-link targets against the local drafts, open gate statuses and agent-memory limits. It also confirms Trident executable/test input equivalence to the previously tested revision. Run it with --soft3, --rs and --trident pointing to the coordinated checkouts. Its result records actual paths and revisions. Remote publication is checked separately after pushing the feature branches.

The independent architecture review covered the twelve relevant documentation review dimensions. Findings about Eidos acceptance cycles, Rs implementation independence and overstated README compatibility were corrected. The final readback found no remaining blocker.

The changes affect plans, documentation and their audit records. No product code, language contract, version, release pin, compiler binary or existing SH acceptance was changed. Cargo builds/tests were not rerun for this documentation delivery. Trident reuses its retained successful check and optimized workspace suite after byte-equivalence verification; this supplies no new Rs/soft3 product-test result. No VB, Eidos or Rs implementation gate is accepted by these planning checks.