Preserve bounded lifecycle component hydration

[8Dionysus]

Problem

The merged lifecycle route still performs whole-session task-episode semantic hydration before applying the requested lifecycle filter, while the live owner route already has a bounded selected-component path.

Change

• add a manifest-first, content-addressed linked-component reader with fail-closed missing/corrupt component diagnostics;
• filter lifecycle records before selected component hydration and report selected/hydrated/verified counts honestly;
• skip the global task-episode digest only on this lifecycle route, because selected content-addressed components are the bounded integrity proof; keep the task-answer route strict;
• add focused regressions for filtered-out hydration, real global-digest non-invocation, and missing/corrupt component rejection.

Validation

• focused lifecycle/component tests: 7 passed;
• py_compile and git diff --check passed;
• owner graph receipt: /srv/abyss-machine/storage/artifacts/aoa-session-memory-route-compat-20260906/release-validation-45020eb5.json;
• graph functional/package/reproducibility nodes passed; current public-tree audit remains blocked by the existing reviewed host-profile/private-network fingerprints, so this is reported as an owner-gate caveat rather than hidden.

No live .aoa or canonical checkout was modified.