fix: complete stale scope locks

[intel352]

Summary

• add scope-lock-complete to mark locked plans Complete, remove .scope-lock files, prune session lock traces, and record completion evidence
• scope strict prompt reminders and PreCompact snapshots to session-owned locked plans when transcript_path is present
• add hook-contract regressions for stale lock cleanup, session-scoped reminders, locked-only compact snapshots, and PreCompact wrapper JSON/stderr behavior
• bump autodev plugin metadata to 6.0.5 and document the release

Verification

• tests/hook-contracts.sh
• tests/version-check.sh
• tests/skill-cross-refs.sh
• tests/skill-content-grep.sh
• shellcheck hooks/completion-claim-guard hooks/pre-compact-snapshot hooks/prompt-strict-interpretation hooks/scope-lock-complete tests/hook-contracts.sh
• git diff --check