Listening Stack 0.4 accountable memory accounts

[emeisazam]

Summary

• pin Oída 0.10.0, AKOÚŌ 0.9.2, Earworm/Akousma 0.7.0, and Akousmata 0.7.0 to their exact annotated-release commits
• teach the read-only doctor to verify separate human/machine accounts, additive human revisions, and immutable machine cores from Oída's gateway manifest
• expose the human-listening semantics and updated contract matrix through the CLI and maintained user/security documentation
• release Listening Stack 0.4.0 with reproducible installer metadata

Validation

• 59 tests pass
• all four remote release tags peel exactly to the pinned 40-character commits
• two independently built zipapps are byte-identical (4bd051de6f0cc96928a5efa3d93da447ed27bbf3e4d86ff46c0f4013fbc79f7f)
• wheel build, CLI/model smoke tests, CFF parsing, shell syntax, and git diff --check pass
• Gitleaks reports no findings; no generated or audit artifacts are included

Release

Candidate for annotated v0.4.0. The tag workflow will create the GitHub Release and executable zipapp/checksum assets after merged-main CI passes.