feat(asm-122): implement memory foundation slices 115-121

[cong91]

Summary

• implement ASM-122 memory foundation slices across contract, retrieval, precedence, promotion, and migration surfaces
• add domain-based memory foundation migration commands and runtime surfaces
• add parity / precedence / promotion / migration tests for the foundation layer

Included scope

• ASM-119 + ASM-121 bootstrap
• ASM-118 session scope semantics
• ASM-120 retrieval policy unification
• ASM-121 parity gate expansion
• ASM-115 migration runner / CLI / preflight-plan-apply-verify-rollback surface
• ASM-117 precedence policy for SlotDB > semantic > graph support
• ASM-116 promotion lifecycle and promoted retrieval preference
• naming refactor from task-id flavored migration file names to domain-based naming

Validation

• npm run build:openclaw
• npm run test
• npx tsx tests/test-memory-tools-namespace-roundtrip.ts
• npx tsx tests/test-semantic-memory-usecase.ts
• npx tsx tests/test-auto-recall.ts
• npx tsx tests/test-retrieval-policy.ts
• npx tsx tests/test-asm121-parity-gate.ts
• npx tsx tests/test-recall-precedence.ts
• npx tsx tests/test-promotion-lifecycle.ts
• npx tsx tests/test-memory-foundation-migration-core.ts
• npx tsx tests/test-asm-cli.ts
• runnable migration surfaces checked via preflight/plan/check paths

Notes

• This PR intentionally contains the ASM-122 implementation foundation that passed code-level evidence.
• Follow-up for semantic/vector rollback full-fidelity remains outside this PR because sandbox rollback still shows a small mismatch and is tracked separately.