Add User Model Service and Temporal Recall for MeMind V0.1.
Introduce UMS ingest/snapshot pipeline, Context Planner with multi-source recall, runtime context injection, canonical user mapping, and session snapshot loading on auth/me. Co-authored-by: Cursor <cursoragent@cursor.com>
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john
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-- memind_user_model v0 — User Model Service (UMS)
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-- 库：memind_user_model（与 meinput、goose 并列，独立 RDS 库或 schema）
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-- UMS 只 ingest Evidence Envelope v1，不读 meinput.mi_* 表。
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-- ── L0: 原始 Evidence（immutable append）────────────────────────────────────
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CREATE TABLE IF NOT EXISTS um_evidence (
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evidence_id CHAR(36) PRIMARY KEY,
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user_id CHAR(36) NOT NULL,
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source_type VARCHAR(32) NOT NULL,
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source_ref VARCHAR(512) NOT NULL,
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evidence_type VARCHAR(64) NOT NULL,
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occurred_at DATETIME(3) NOT NULL,
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received_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
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content_hash CHAR(64) NOT NULL,
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schema_version INT NOT NULL DEFAULT 1,
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privacy_level VARCHAR(32) NOT NULL DEFAULT 'normal',
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payload_json JSON NOT NULL,
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UNIQUE KEY uq_um_evidence_content (user_id, content_hash),
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KEY idx_um_evidence_user_time (user_id, occurred_at DESC),
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KEY idx_um_evidence_source (user_id, source_type, occurred_at DESC)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
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-- ── L1: Signal（观察到了什么 — 确定性，可复算）────────────────────────────
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CREATE TABLE IF NOT EXISTS um_signals (
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signal_id CHAR(36) PRIMARY KEY,
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user_id CHAR(36) NOT NULL,
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signal_type VARCHAR(64) NOT NULL,
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-- 例：term_frequency | app_usage | entity_mention | rhythm_hour | segment_count
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dimension_key VARCHAR(128) NOT NULL,
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-- 例：term:MeInput | app:com.tencent.xin | hour:15
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window_start DATETIME(3) NOT NULL,
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window_end DATETIME(3) NOT NULL,
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value_json JSON NOT NULL,
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-- 例：{"count":126,"chars":8400,"distinct_days":7}
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evidence_ids JSON NOT NULL,
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-- 指向 um_evidence.evidence_id 数组
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computed_at BIGINT NOT NULL,
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content_hash CHAR(64) NOT NULL,
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UNIQUE KEY uq_um_signal (user_id, signal_type, dimension_key, window_start, window_end, content_hash),
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KEY idx_um_signals_user_window (user_id, window_end DESC)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
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-- ── L2: Candidate（系统推断了什么 — hypothesis）────────────────────────────
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CREATE TABLE IF NOT EXISTS um_candidates (
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candidate_id CHAR(36) PRIMARY KEY,
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user_id CHAR(36) NOT NULL,
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candidate_type VARCHAR(64) NOT NULL,
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-- project | interest | preference | relation | routine | focus
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hypothesis_json JSON NOT NULL,
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-- 例：{"type":"project","name":"MeInput","role":"active"}
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status ENUM(
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'observed',
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'open',
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'accepted',
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'rejected',
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'conflicted',
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'revoked',
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'memory_eligible',
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'memory_promoted'
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) NOT NULL DEFAULT 'observed',
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promotion_score DECIMAL(6,4) NOT NULL DEFAULT 0,
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confidence DECIMAL(6,4) NOT NULL DEFAULT 0,
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signal_ids JSON NOT NULL,
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evidence_ids JSON NOT NULL,
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first_seen_at DATETIME(3) NOT NULL,
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last_seen_at DATETIME(3) NOT NULL,
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version INT NOT NULL DEFAULT 1,
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parent_candidate_id CHAR(36) NULL,
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conflict_with_id CHAR(36) NULL,
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created_at BIGINT NOT NULL,
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updated_at BIGINT NOT NULL,
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KEY idx_um_candidates_user_status (user_id, status, last_seen_at DESC),
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KEY idx_um_candidates_user_type (user_id, candidate_type, promotion_score DESC)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
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-- ── L3: User Model Graph ───────────────────────────────────────────────────
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CREATE TABLE IF NOT EXISTS um_entities (
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entity_id CHAR(36) PRIMARY KEY,
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user_id CHAR(36) NOT NULL,
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entity_type VARCHAR(32) NOT NULL,
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-- person | project | topic | tool | preference_dim | role
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canonical_name VARCHAR(256) NOT NULL,
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aliases_json JSON NULL,
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status ENUM('active', 'archived', 'revoked') NOT NULL DEFAULT 'active',
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created_at BIGINT NOT NULL,
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updated_at BIGINT NOT NULL,
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UNIQUE KEY uq_um_entity (user_id, entity_type, canonical_name(128))
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
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CREATE TABLE IF NOT EXISTS um_attributes (
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attribute_id CHAR(36) PRIMARY KEY,
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user_id CHAR(36) NOT NULL,
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entity_id CHAR(36) NULL,
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attr_key VARCHAR(128) NOT NULL,
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value_json JSON NOT NULL,
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confidence DECIMAL(6,4) NOT NULL,
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decay_halflife_days INT NOT NULL DEFAULT 90,
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effective_weight DECIMAL(6,4) NOT NULL DEFAULT 1,
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evidence_ids JSON NOT NULL,
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candidate_id CHAR(36) NULL,
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first_seen_at DATETIME(3) NOT NULL,
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last_seen_at DATETIME(3) NOT NULL,
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status ENUM('active', 'superseded', 'revoked') NOT NULL DEFAULT 'active',
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version INT NOT NULL DEFAULT 1,
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content_hash CHAR(64) NOT NULL,
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KEY idx_um_attr_user_key (user_id, attr_key, status, effective_weight DESC),
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CONSTRAINT fk_um_attr_entity FOREIGN KEY (entity_id) REFERENCES um_entities(entity_id) ON DELETE SET NULL
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
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CREATE TABLE IF NOT EXISTS um_relations (
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relation_id CHAR(36) PRIMARY KEY,
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user_id CHAR(36) NOT NULL,
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from_entity_id CHAR(36) NOT NULL,
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rel_type VARCHAR(64) NOT NULL,
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to_entity_id CHAR(36) NOT NULL,
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confidence DECIMAL(6,4) NOT NULL,
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evidence_ids JSON NOT NULL,
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candidate_id CHAR(36) NULL,
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first_seen_at DATETIME(3) NOT NULL,
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last_seen_at DATETIME(3) NOT NULL,
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status ENUM('active', 'superseded', 'revoked') NOT NULL DEFAULT 'active',
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KEY idx_um_rel_user (user_id, from_entity_id, rel_type),
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CONSTRAINT fk_um_rel_from FOREIGN KEY (from_entity_id) REFERENCES um_entities(entity_id) ON DELETE CASCADE,
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CONSTRAINT fk_um_rel_to FOREIGN KEY (to_entity_id) REFERENCES um_entities(entity_id) ON DELETE CASCADE
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
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-- ── L4: Profile Projection（Graph 的结构化投影，非 narrative）──────────────
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CREATE TABLE IF NOT EXISTS um_profile_versions (
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profile_version INT NOT NULL,
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user_id CHAR(36) NOT NULL,
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structured_json JSON NOT NULL,
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content_hash CHAR(64) NOT NULL,
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parent_version INT NULL,
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materialize_reason VARCHAR(64) NOT NULL,
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-- daily_consolidation | candidate_accepted | threshold | manual
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created_at BIGINT NOT NULL,
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status ENUM('active', 'superseded', 'revoked') NOT NULL DEFAULT 'active',
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PRIMARY KEY (user_id, profile_version)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
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-- ── L5: Agent Snapshot（Profile Projection 的渲染视图，Session 加载）────────
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CREATE TABLE IF NOT EXISTS um_profile_snapshots (
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snapshot_id CHAR(36) PRIMARY KEY,
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user_id CHAR(36) NOT NULL,
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projection VARCHAR(32) NOT NULL DEFAULT 'default',
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-- default | coding | schedule
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profile_version INT NOT NULL,
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fast_revision INT NOT NULL DEFAULT 0,
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snapshot_json JSON NOT NULL,
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byte_size INT NOT NULL,
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content_hash CHAR(64) NOT NULL,
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created_at BIGINT NOT NULL,
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expires_at BIGINT NULL,
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status ENUM('active', 'superseded', 'revoked') NOT NULL DEFAULT 'active',
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KEY idx_um_snapshot_user_proj (user_id, projection, status, created_at DESC)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
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-- ── 辅助：ingest 游标（按 user + source_type）────────────────────────────────
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CREATE TABLE IF NOT EXISTS um_ingest_cursors (
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user_id CHAR(36) NOT NULL,
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source_type VARCHAR(32) NOT NULL,
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cursor_value VARCHAR(256) NOT NULL,
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updated_at BIGINT NOT NULL,
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PRIMARY KEY (user_id, source_type)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
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-- ── v0.1 预留：Memory lineage（暂不写入，schema 先冻结）────────────────────
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CREATE TABLE IF NOT EXISTS um_memory_promotions (
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promotion_id CHAR(36) PRIMARY KEY,
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user_id CHAR(36) NOT NULL,
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candidate_id CHAR(36) NOT NULL,
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attribute_id CHAR(36) NULL,
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memind_candidate_id VARCHAR(64) NULL,
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content_hash CHAR(64) NOT NULL,
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promoted_at BIGINT NOT NULL,
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revoked_at BIGINT NULL,
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status ENUM('promoted', 'revoked') NOT NULL DEFAULT 'promoted',
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KEY idx_um_promo_user (user_id, status)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
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