compound-loop v0.8.0

Added

• Three new scripts/validate.sh structural checks: check 11 (final_action shape validation), check 12 (carry-forward T-ID referential integrity across retro docs), and check 13 (planning step/item numbering contiguity and cross-file reference resolution).
• Designing step 11 gains a principle-exception composability check: when a spec pairs a universal principle with a requirement mandating an apparent exception, the spec names the carve-out.
• scripts/test-final-action-skip.sh fixture test verifying check 11's skip path when no progress.md exists.
• Three malformation-guard fixture cases (H/I/J) added to scripts/test-retro-format-drift.sh covering check 9's level-count, verdict-count, and verdict-line guards.

Changed

• Planning step 14 (Self-review) gains two checks: architecture-unit clause consistency (diff Architecture notes claims against unit steps) and command closure (verify every shell variable referenced in a unit step is assigned within that step or earlier).
• Retrospective Phase 4 now mandates classifying each carry-forward row's trigger class (edit-based, drift-based, event-based) before classifying its status.
• progress-schema.md final_action block gains an optional marker field; the predicted -> determined transition now has the same explicit same-edit Log clause as the other transitions.
• Shipping verification reference adds the source-over-memory citation rule: claims about file content require a same-turn read.
• Shipping SKILL.md Step 7 adds the hand-up packet definition and a message-freshness rule for post-review commit messages.
• Reviewing SKILL.md adds "claim layer" to the canonical evidence-tier term list.

Fixed

• Repaired two pre-existing red test suites: signal-drift Case D line reference (77 -> 94) and release-publication hash fixture.
• validate.sh check 5 now emits a named FAIL: line instead of a Python traceback on unreadable files.
• scripts/test-release-publication.sh now pins PYTHON_SUPPORT_FILE at the delegation boundary.
• scripts/test-python-compatibility.sh bootstrap interpreter gated at CPython >= 3.8.
• Closed the plan-skip-documentation retro's missing (T1) carry-forward T-ID citation.