docs(migration): finalize phase docs, validation, and rollback pack

tasks/openclawd-migration-2026-03/INVENTORY.md

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+# INVENTORY
+
+## Runtime Layer (vaults)
+- Path: `/Users/lingyuzeng/openclawd/vaults`
+- Core runtime files: `SOUL.md`, `USER.md`, `IDENTITY.md`, `AGENTS.md`, `TOOLS.md`, `HEARTBEAT.md`
+- Compatibility memory files: `MEMORY.md`, `memory/*.md`
+
+## Durable Memory Layer (collective)
+- Path: `/Users/lingyuzeng/project/collective-memory-repo`
+- Lanes: `daily/`, `tasks/`, `agents/`, `shared/long-term/`, `policies/`
+- Imported artifacts already present:
+  - `shared/long-term/decisions/openclawd-infra-baseline.md`
+  - `shared/long-term/projects/openclawd-memory-index.md`
+  - `shared/long-term/projects/openclawd-project-status.md`
+  - `shared/long-term/lessons/openclawd-ops-lessons.md`
+
+## OpenClaw Config Snapshot
+- File: `/Users/lingyuzeng/.openclaw/openclaw.json`
+- `memory.backend = qmd`
+- `memory.qmd.command = /opt/homebrew/bin/qmd` (local binary)
+- `memory.qmd.paths` now point to collective-memory-repo lanes.