Merge branch 'feat/notifications-phase-a-foundation' into 'main'

feat(notifications): Phase A foundation — module + schema 0021 See merge request 2-6/2-6-4/terravault/ordinis!5
2026-05-10 15:41:34 +00:00
parent 419e9b9b01 3b7b1bffe5
commit 0275e78907
24 changed files with 1802 additions and 0 deletions
@@ -0,0 +1,161 @@
+package cloud.nstart.terravault.ordinis.domain.notification;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.Index;
+import jakarta.persistence.Table;
+import jakarta.persistence.UniqueConstraint;
+
+import java.time.OffsetDateTime;
+import java.util.UUID;
+
+/**
+ * Per-recipient notification delivery audit row.
+ *
+ * <p>UNIQUE {@code (event_id, channel, recipient)} — primary idempotency guard
+ * (см. migration 0021 + design doc D2). Insert pattern в
+ * {@code IdempotencyGuard.shouldSend()}:
+ *
+ * <pre>{@code
+ * INSERT INTO notification_log (event_id, channel, recipient, status, sent_at)
+ * VALUES (?, ?, ?, 'PENDING', NOW())
+ * ON CONFLICT (event_id, channel, recipient) DO NOTHING
+ * RETURNING id;
+ * }</pre>
+ *
+ * <p>Если RETURNING пустой — другой consumer уже claim'ил отправку (или sweep
+ * job не освободил). Else — мы owner, dispatch + UPDATE status final.
+ *
+ * <p>Status enum UPPERCASE (Hibernate {@code @Enumerated(EnumType.STRING)}
+ * lesson из v1.1.0 P3 — migration 0020 fix). DB CHECK constraint matches
+ * Java enum names exactly.
+ */
+@Entity
+@Table(
+    name = "notification_log",
+    uniqueConstraints = {
+        // Mirrors notification_log_idempotency UNIQUE constraint в migration 0021.
+        @UniqueConstraint(
+            name = "notification_log_idempotency",
+            columnNames = {"event_id", "channel", "recipient"}
+        )
+    },
+    indexes = {
+        @Index(name = "idx_notif_log_draft", columnList = "draft_id"),
+        @Index(name = "idx_notif_log_recipient_time", columnList = "recipient,sent_at DESC"),
+        @Index(name = "idx_notif_log_event", columnList = "event_id")
+    }
+)
+public class NotificationLog {
+
+  /** Lifecycle status. UPPERCASE — matches CHECK constraint в 0021. */
+  public enum Status {
+    /** Inserted but not yet dispatched (или crashed mid-dispatch). Pending sweep job
+     *  cleans up stuck rows старше {@code notifications.pendingSweep.olderThanMs}. */
+    PENDING,
+    /** Successfully sent через channel. Idempotency lock — не replay'ится. */
+    SENT,
+    /** Channel returned non-retryable error (auth, malformed, etc). */
+    FAILED,
+    /** Rate limiter denied — recipient hit per-hour cap. */
+    RATE_LIMITED,
+    /** User opted out этого channel в user_notification_prefs. */
+    SKIPPED_PREF,
+    /** Event старше maxEventAgeHours — backlog burst guard fired. */
+    SKIPPED_TOO_OLD,
+    /** One-click unsubscribe — токен HMAC validated, prefs.enabled=false. */
+    UNSUBSCRIBED
+  }
+
+  /** Wire format channel — lowercase strings ('email', 'express', 'telegram')
+   *  matches CHECK constraint и Helm config keys. NOT EnumType.STRING на channel
+   *  потому что хотим lowercase (брендовые токены), не Java UPPERCASE conv. */
+  @Id
+  @GeneratedValue(strategy = GenerationType.IDENTITY)
+  @Column(name = "id")
+  private Long id;
+
+  @Column(name = "event_id", nullable = false)
+  private UUID eventId;
+
+  @Column(name = "event_type", nullable = false, length = 64)
+  private String eventType;
+
+  /** Nullable: некоторые events без draft контекста (future expansion). */
+  @Column(name = "draft_id")
+  private UUID draftId;
+
+  /** Lower-case wire format. См. {@code ChannelKind.wireName()} в notifications module. */
+  @Column(name = "channel", nullable = false, length = 16)
+  private String channel;
+
+  /** Email / express chat_id (UUID string) / telegram chat_id (numeric string). */
+  @Column(name = "recipient", nullable = false, length = 256)
+  private String recipient;
+
+  @Enumerated(EnumType.STRING)
+  @Column(name = "status", nullable = false, length = 20)
+  private Status status;
+
+  @Column(name = "sent_at", nullable = false)
+  private OffsetDateTime sentAt;
+
+  @Column(name = "error_msg", columnDefinition = "TEXT")
+  private String errorMsg;
+
+  protected NotificationLog() {}
+
+  /** Constructs row in PENDING state — typical entry point для IdempotencyGuard. */
+  public NotificationLog(UUID eventId, String eventType, UUID draftId,
+                         String channel, String recipient) {
+    this.eventId = eventId;
+    this.eventType = eventType;
+    this.draftId = draftId;
+    this.channel = channel;
+    this.recipient = recipient;
+    this.status = Status.PENDING;
+    this.sentAt = OffsetDateTime.now();
+  }
+
+  public void markSent() {
+    this.status = Status.SENT;
+    this.errorMsg = null;
+  }
+
+  public void markFailed(String error) {
+    this.status = Status.FAILED;
+    this.errorMsg = error;
+  }
+
+  public void markRateLimited() {
+    this.status = Status.RATE_LIMITED;
+  }
+
+  public void markSkippedPref() {
+    this.status = Status.SKIPPED_PREF;
+  }
+
+  public void markSkippedTooOld() {
+    this.status = Status.SKIPPED_TOO_OLD;
+  }
+
+  public void markUnsubscribed() {
+    this.status = Status.UNSUBSCRIBED;
+  }
+
+  // Getters (no setters — entity мутирует через named transitions)
+  public Long getId() { return id; }
+  public UUID getEventId() { return eventId; }
+  public String getEventType() { return eventType; }
+  public UUID getDraftId() { return draftId; }
+  public String getChannel() { return channel; }
+  public String getRecipient() { return recipient; }
+  public Status getStatus() { return status; }
+  public OffsetDateTime getSentAt() { return sentAt; }
+  public String getErrorMsg() { return errorMsg; }
+}
@@ -0,0 +1,83 @@
+package cloud.nstart.terravault.ordinis.domain.notification;
+
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+
+import java.time.OffsetDateTime;
+import java.util.Optional;
+import java.util.UUID;
+
+public interface NotificationLogRepository extends JpaRepository<NotificationLog, Long> {
+
+  /**
+   * Idempotency claim. Native query потому что Spring Data JPA не поддерживает
+   * {@code INSERT ... ON CONFLICT DO NOTHING RETURNING} напрямую (PostgreSQL specific).
+   *
+   * <p>Returns inserted row's id если claim succeeded, или empty если конфликт
+   * (другой consumer уже claim'ил, или sweep job не освободил stuck row).
+   *
+   * <p>Используется в {@code IdempotencyGuard.shouldSend()}.
+   */
+  @Modifying
+  @Query(value = """
+      INSERT INTO notification_log (event_id, event_type, draft_id, channel, recipient, status, sent_at)
+      VALUES (:eventId, :eventType, :draftId, :channel, :recipient, 'PENDING', NOW())
+      ON CONFLICT (event_id, channel, recipient) DO NOTHING
+      RETURNING id
+      """, nativeQuery = true)
+  Optional<Long> tryClaim(
+      @Param("eventId") UUID eventId,
+      @Param("eventType") String eventType,
+      @Param("draftId") UUID draftId,
+      @Param("channel") String channel,
+      @Param("recipient") String recipient);
+
+  /**
+   * Pending sweep — освобождает stuck PENDING rows старше {@code threshold}.
+   * Returns deleted count для metrics. Использует partial index
+   * {@code idx_notif_log_pending_sweep}.
+   */
+  @Modifying
+  @Query(value = """
+      DELETE FROM notification_log
+      WHERE status = 'PENDING' AND sent_at < :threshold
+      """, nativeQuery = true)
+  int deletePendingOlderThan(@Param("threshold") OffsetDateTime threshold);
+
+  /**
+   * Retention sweep — удаляет terminal status rows старше {@code threshold}.
+   * FAILED rows preserved bessrochno (для post-mortem). Partial index
+   * {@code idx_notif_log_retention}.
+   */
+  @Modifying
+  @Query(value = """
+      DELETE FROM notification_log
+      WHERE status IN ('SENT','RATE_LIMITED','SKIPPED_PREF','SKIPPED_TOO_OLD','UNSUBSCRIBED')
+        AND sent_at < :threshold
+      """, nativeQuery = true)
+  int deleteRetainedOlderThan(@Param("threshold") OffsetDateTime threshold);
+
+  /**
+   * UI "Last sent" lookup для {@code GET /api/v1/me/notifications}.
+   * Cache 60s в service layer.
+   */
+  @Query("""
+      SELECT MAX(n.sentAt) FROM NotificationLog n
+      WHERE n.recipient = :recipient
+        AND n.channel = :channel
+        AND n.status = cloud.nstart.terravault.ordinis.domain.notification.NotificationLog.Status.SENT
+      """)
+  Optional<OffsetDateTime> findLastSentAt(
+      @Param("recipient") String recipient,
+      @Param("channel") String channel);
+
+  /** Admin endpoint pagination. */
+  Page<NotificationLog> findByRecipientOrderBySentAtDesc(String recipient, Pageable pageable);
+
+  /** Admin endpoint — full audit lookup by event. */
+  Page<NotificationLog> findByEventIdOrderBySentAtDesc(UUID eventId, Pageable pageable);
+}
@@ -0,0 +1,78 @@
+package cloud.nstart.terravault.ordinis.domain.notification;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Embeddable;
+import jakarta.persistence.EmbeddedId;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Table;
+
+import java.io.Serializable;
+import java.util.Objects;
+
+/**
+ * Per-user channel opt-in/out (см. migration 0021 + design doc D3).
+ *
+ * <p>Composite PK {@code (user_id, channel)}. Default {@code enabled=false} для
+ * новых rows; bootstrap loadData может включить email для existing reviewer/maker
+ * ролей при первом deploy.
+ *
+ * <p>Channel — lowercase wire format ('email' / 'express' / 'telegram').
+ */
+@Entity
+@Table(name = "user_notification_prefs")
+public class UserNotificationPref {
+
+  @Embeddable
+  public static class Pk implements Serializable {
+
+    @Column(name = "user_id", length = 128, nullable = false)
+    private String userId;
+
+    @Column(name = "channel", length = 16, nullable = false)
+    private String channel;
+
+    protected Pk() {}
+
+    public Pk(String userId, String channel) {
+      this.userId = userId;
+      this.channel = channel;
+    }
+
+    public String getUserId() { return userId; }
+    public String getChannel() { return channel; }
+
+    @Override
+    public boolean equals(Object o) {
+      if (this == o) return true;
+      if (!(o instanceof Pk pk)) return false;
+      return Objects.equals(userId, pk.userId) && Objects.equals(channel, pk.channel);
+    }
+
+    @Override
+    public int hashCode() {
+      return Objects.hash(userId, channel);
+    }
+  }
+
+  @EmbeddedId
+  private Pk id;
+
+  @Column(name = "enabled", nullable = false)
+  private boolean enabled;
+
+  protected UserNotificationPref() {}
+
+  public UserNotificationPref(String userId, String channel, boolean enabled) {
+    this.id = new Pk(userId, channel);
+    this.enabled = enabled;
+  }
+
+  public Pk getId() { return id; }
+  public String getUserId() { return id.getUserId(); }
+  public String getChannel() { return id.getChannel(); }
+  public boolean isEnabled() { return enabled; }
+
+  public void setEnabled(boolean enabled) {
+    this.enabled = enabled;
+  }
+}
@@ -0,0 +1,16 @@
+package cloud.nstart.terravault.ordinis.domain.notification;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface UserNotificationPrefRepository
+    extends JpaRepository<UserNotificationPref, UserNotificationPref.Pk> {
+
+  /** Все каналы пользователя — для GET /api/v1/me/notifications page. */
+  List<UserNotificationPref> findByIdUserId(String userId);
+
+  /** Single channel lookup для dispatcher (skip if disabled). */
+  Optional<UserNotificationPref> findByIdUserIdAndIdChannel(String userId, String channel);
+}
@@ -0,0 +1,155 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<databaseChangeLog
+  xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog
+                      http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-4.27.xsd">
+
+  <!--
+    Notifications v1.2.0 — schema foundation.
+
+    Цель: persistent audit trail доставки + per-user channel preferences.
+    Notification dispatcher leverages existing ordinis-outbox infra (OutboxRecorder
+    + OutboxPoller + KafkaTopicResolver). Этот migration добавляет ТОЛЬКО consumer-side
+    state. События публикуются в outbox_events (existing table).
+
+    Decisions made (per design doc):
+    - D2 idempotency: UNIQUE (event_id, channel, recipient) — primary defence от
+      consumer crash mid-fan-out duplication. INSERT ON CONFLICT DO NOTHING RETURNING.
+    - D11 PendingSweepJob: status='PENDING' rows старше 5 min удаляются → освобождают
+      idempotency lock на crashed dispatch attempts.
+    - D12 RetentionJob: SENT/RATE_LIMITED/SKIPPED_PREF/SKIPPED_TOO_OLD/UNSUBSCRIBED
+      старше 90 дней удаляются ежедневно. FAILED rows preserved bessrochno.
+    - D15 status enum UPPERCASE (Hibernate @Enumerated(EnumType.STRING) lesson из
+      v1.1.0 P3 — migration 0020).
+
+    Indexes:
+    - Partial idx_notif_log_pending_sweep — для @Scheduled sweep job (только PENDING).
+    - Partial idx_notif_log_retention — для daily cleanup (terminal status'ы).
+    - Composite idx_notif_log_recipient_time — для UI "last sent" lookup.
+    - Single column idx_notif_log_draft / event для cross-references.
+
+    Source: ~/.gstack/projects/claude/zimin-main-design-notifications-v1.2.0-20260510-130000.md
+  -->
+
+  <changeSet id="0021-1-notification-log" author="ordinis">
+    <comment>notification_log — per-recipient delivery audit trail с UNIQUE idempotency guard</comment>
+    <createTable tableName="notification_log">
+      <column name="id" type="BIGINT" autoIncrement="true">
+        <constraints primaryKey="true" nullable="false"/>
+      </column>
+      <!-- domain event UUID из outbox_events — связывает notification с triggering event -->
+      <column name="event_id" type="UUID">
+        <constraints nullable="false"/>
+      </column>
+      <column name="event_type" type="VARCHAR(64)">
+        <constraints nullable="false"/>
+      </column>
+      <!-- nullable: некоторые events без draft контекста (future expansion) -->
+      <column name="draft_id" type="UUID"/>
+      <column name="channel" type="VARCHAR(16)">
+        <constraints nullable="false"/>
+      </column>
+      <!-- email / express chat_id / telegram chat_id -->
+      <column name="recipient" type="VARCHAR(256)">
+        <constraints nullable="false"/>
+      </column>
+      <column name="status" type="VARCHAR(20)">
+        <constraints nullable="false"/>
+      </column>
+      <column name="sent_at" type="TIMESTAMPTZ" defaultValueComputed="NOW()">
+        <constraints nullable="false"/>
+      </column>
+      <column name="error_msg" type="TEXT"/>
+    </createTable>
+
+    <!-- D15 status enum UPPERCASE (Hibernate @Enumerated lesson) -->
+    <sql>
+      ALTER TABLE notification_log
+      ADD CONSTRAINT notification_log_status_check
+      CHECK (status IN (
+        'PENDING', 'SENT', 'FAILED',
+        'RATE_LIMITED', 'SKIPPED_PREF', 'SKIPPED_TOO_OLD',
+        'UNSUBSCRIBED'
+      ));
+    </sql>
+
+    <sql>
+      ALTER TABLE notification_log
+      ADD CONSTRAINT notification_log_channel_check
+      CHECK (channel IN ('email', 'express', 'telegram'));
+    </sql>
+
+    <!-- D2 idempotency guard — primary defence от consumer crash mid-fan-out duplication.
+         (event_id, channel, recipient) UNIQUE: тот же event для того же канала и
+         recipient'а никогда не send'ится дважды. INSERT ON CONFLICT DO NOTHING RETURNING
+         в IdempotencyGuard.shouldSend(). -->
+    <sql>
+      ALTER TABLE notification_log
+      ADD CONSTRAINT notification_log_idempotency
+      UNIQUE (event_id, channel, recipient);
+    </sql>
+
+    <!-- Partial index для PendingSweepJob: только PENDING rows нужно scan'ить
+         каждые 5 минут. Без partial index full scan на growing table. -->
+    <sql>
+      CREATE INDEX idx_notif_log_pending_sweep
+      ON notification_log (sent_at)
+      WHERE status = 'PENDING';
+    </sql>
+
+    <!-- Partial index для RetentionJob daily cleanup: только terminal "deletable"
+         status'ы. FAILED rows preserved → не в индексе. -->
+    <sql>
+      CREATE INDEX idx_notif_log_retention
+      ON notification_log (sent_at)
+      WHERE status IN ('SENT', 'RATE_LIMITED', 'SKIPPED_PREF', 'SKIPPED_TOO_OLD', 'UNSUBSCRIBED');
+    </sql>
+
+    <createIndex indexName="idx_notif_log_draft" tableName="notification_log">
+      <column name="draft_id"/>
+    </createIndex>
+
+    <!-- UI "last sent {N} min ago" lookup — recipient + sent_at DESC. -->
+    <createIndex indexName="idx_notif_log_recipient_time" tableName="notification_log">
+      <column name="recipient"/>
+      <column name="sent_at" descending="true"/>
+    </createIndex>
+
+    <createIndex indexName="idx_notif_log_event" tableName="notification_log">
+      <column name="event_id"/>
+    </createIndex>
+  </changeSet>
+
+  <changeSet id="0021-2-user-notification-prefs" author="ordinis">
+    <comment>user_notification_prefs — per-user channel opt-in/out</comment>
+    <createTable tableName="user_notification_prefs">
+      <!-- Keycloak subject (sub claim) — same shape as record_drafts.maker_id (VARCHAR 128) -->
+      <column name="user_id" type="VARCHAR(128)">
+        <constraints nullable="false"/>
+      </column>
+      <column name="channel" type="VARCHAR(16)">
+        <constraints nullable="false"/>
+      </column>
+      <!-- D3: email default ON для existing users применяется bootstrap loadData
+           (отдельный changeSet опционально per env). Для новых юзеров — explicit
+           opt-in через UI. -->
+      <column name="enabled" type="BOOLEAN" defaultValueBoolean="false">
+        <constraints nullable="false"/>
+      </column>
+    </createTable>
+
+    <sql>
+      ALTER TABLE user_notification_prefs
+      ADD CONSTRAINT user_notification_prefs_pkey
+      PRIMARY KEY (user_id, channel);
+    </sql>
+
+    <sql>
+      ALTER TABLE user_notification_prefs
+      ADD CONSTRAINT user_notification_prefs_channel_check
+      CHECK (channel IN ('email', 'express', 'telegram'));
+    </sql>
+  </changeSet>
+
+</databaseChangeLog>
@@ -30,5 +30,6 @@
  <include file="changes/0018-trgm-search-index.xml" relativeToChangelogFile="true"/>
  <include file="changes/0019-approval-workflow-v2.xml" relativeToChangelogFile="true"/>
  <include file="changes/0020-fix-draft-status-case.xml" relativeToChangelogFile="true"/>
+  <include file="changes/0021-notifications.xml" relativeToChangelogFile="true"/>

 </databaseChangeLog>
@@ -0,0 +1,84 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>cloud.nstart.terravault.ordinis</groupId>
+    <artifactId>ordinis-parent</artifactId>
+    <version>0.1.0-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>ordinis-notifications</artifactId>
+  <name>Ordinis :: Notifications</name>
+  <description>
+    Push-notifications module (email + Express + Telegram) для Approval Workflow v2 events.
+    Leverages existing ordinis-outbox infra (OutboxRecorder + OutboxPoller +
+    KafkaTopicResolver). Этот модуль = consumer side: Kafka @KafkaListener,
+    fan-out per recipient × channel, rate limiter, idempotency guard через PG UNIQUE.
+
+    Включается через ordinis.notifications.enabled=true (writer pod).
+    См. ~/.gstack/projects/claude/zimin-main-design-notifications-v1.2.0-20260510-130000.md
+  </description>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-mail</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-cache</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-data-jpa</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-data-redis</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.springframework.kafka</groupId>
+      <artifactId>spring-kafka</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>com.fasterxml.jackson.core</groupId>
+      <artifactId>jackson-databind</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>io.micrometer</groupId>
+      <artifactId>micrometer-core</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>cloud.nstart.terravault.ordinis</groupId>
+      <artifactId>ordinis-domain</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>cloud.nstart.terravault.ordinis</groupId>
+      <artifactId>ordinis-events-api</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>cloud.nstart.terravault.ordinis</groupId>
+      <artifactId>ordinis-outbox</artifactId>
+    </dependency>
+
+    <!-- Test scope -->
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-test</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>com.icegreen</groupId>
+      <artifactId>greenmail</artifactId>
+      <version>2.1.5</version>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+</project>
@@ -0,0 +1,58 @@
+package cloud.nstart.terravault.ordinis.notifications.channel;
+
+/**
+ * Канал доставки уведомления.
+ *
+ * <p><b>Wire format — lowercase</b> ('email' / 'express' / 'telegram'). Такой
+ * формат используется в:
+ * <ul>
+ *   <li>DB columns: {@code notification_log.channel}, {@code user_notification_prefs.channel}
+ *       (см. CHECK constraint {@code notification_log_channel_check} в migration 0021)</li>
+ *   <li>API JSON: {@code GET /api/v1/me/notifications}</li>
+ *   <li>Helm config keys: {@code notifications.express.*}</li>
+ *   <li>Metric labels: {@code nsi_notification_sent_total{channel="email"}}</li>
+ * </ul>
+ *
+ * <p><b>NB:</b> {@code channel} column НЕ использует {@code @Enumerated(EnumType.STRING)} —
+ * mapping ручной через {@link #wireName()}, чтобы DB хранила lowercase wire-format.
+ * Это отличается от {@code notification_log.status}, который UPPERCASE
+ * (carry-forward lesson из v1.1.0 P3 — Hibernate {@code @Enumerated(EnumType.STRING)}
+ * пишет UPPERCASE, поэтому status CHECK в 0021 тоже UPPERCASE).
+ *
+ * <p>Persist: всегда {@link #wireName()} (lowercase). Read из DB: {@link #fromWireName(String)}.
+ * Никогда не используй {@link Enum#name()} для DB/API — это вернёт UPPERCASE и
+ * порушит CHECK constraint на insert.
+ */
+public enum ChannelKind {
+  EMAIL("email"),
+  EXPRESS("express"),
+  TELEGRAM("telegram");
+
+  private final String wireName;
+
+  ChannelKind(String wireName) {
+    this.wireName = wireName;
+  }
+
+  /**
+   * Lower-case wire-format. Используется wherever DB / API / config / metrics
+   * касаются channel identity. См. class-level Javadoc для полного списка
+   * usage points.
+   */
+  public String wireName() {
+    return wireName;
+  }
+
+  /** Парсинг из wire-format. Throws IllegalArgumentException на unknown value. */
+  public static ChannelKind fromWireName(String wire) {
+    if (wire == null) {
+      throw new IllegalArgumentException("channel wire name is null");
+    }
+    for (ChannelKind k : values()) {
+      if (k.wireName.equals(wire)) {
+        return k;
+      }
+    }
+    throw new IllegalArgumentException("unknown channel: " + wire);
+  }
+}
@@ -0,0 +1,107 @@
+package cloud.nstart.terravault.ordinis.notifications.channel;
+
+import cloud.nstart.terravault.ordinis.notifications.config.NotificationsProperties;
+import cloud.nstart.terravault.ordinis.notifications.event.NotificationEvent;
+import io.micrometer.core.instrument.MeterRegistry;
+import io.micrometer.core.instrument.Timer;
+import jakarta.mail.MessagingException;
+import jakarta.mail.internet.MimeMessage;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.mail.MailException;
+import org.springframework.mail.javamail.JavaMailSender;
+import org.springframework.mail.javamail.MimeMessageHelper;
+import org.springframework.stereotype.Component;
+
+import java.nio.charset.StandardCharsets;
+import java.time.Duration;
+
+/**
+ * SMTP-based email channel. Phase A delivery target.
+ *
+ * <p>Multipart text+HTML send (RFC 2387) — plain text fallback для accessibility,
+ * HTML version с link styling. Per design § 8.6.
+ *
+ * <p>Sanitization happens upstream в {@code MessageRenderer.render()} —
+ * {@code Sanitizer.forEmailHeader()} применяется ко всем dynamic params в subject.
+ * Body тоже sanitized (CRLF strip preserves layout).
+ *
+ * <p>Per design § 5 EmailChannel:
+ * <ul>
+ *   <li>SMTP timeouts через {@code spring.mail.properties.mail.smtp.timeout=10000}.</li>
+ *   <li>Hang >10s → {@code MailSendException} → channel returns failed.</li>
+ *   <li>FAILED row не освобождает idempotency lock (conscious choice — failed =
+ *       "tried, gave up", не долбим SMTP бесконечно).</li>
+ * </ul>
+ */
+@Component
+@ConditionalOnProperty(name = "ordinis.notifications.enabled", havingValue = "true", matchIfMissing = false)
+// Без JavaMailSender bean (т.е. spring.mail.host не задан) ChannelKind.EMAIL
+// не активируется. Это позволяет включить notifications.enabled=true для
+// Express-only deploy без обязательной SMTP-конфигурации, и не вешает Spring
+// boot на UnsatisfiedDependencyException когда mail starter в classpath, но
+// инфра почты не подведена.
+@ConditionalOnBean(JavaMailSender.class)
+public class EmailChannel implements NotificationChannel {
+
+  private static final Logger log = LoggerFactory.getLogger(EmailChannel.class);
+
+  private final JavaMailSender mailSender;
+  private final NotificationsProperties props;
+  private final Timer dispatchTimer;
+
+  public EmailChannel(
+      JavaMailSender mailSender,
+      NotificationsProperties props,
+      MeterRegistry meterRegistry) {
+    this.mailSender = mailSender;
+    this.props = props;
+    this.dispatchTimer = Timer.builder("nsi_notification_dispatch_seconds")
+        .description("Per-channel dispatch latency")
+        .tag("channel", "email")
+        .publishPercentileHistogram()
+        .register(meterRegistry);
+  }
+
+  @Override
+  public ChannelKind kind() {
+    return ChannelKind.EMAIL;
+  }
+
+  @Override
+  public boolean isEnabled() {
+    String from = props.getEmail().getFromAddress();
+    return from != null && !from.isBlank();
+  }
+
+  @Override
+  public DispatchResult dispatch(NotificationEvent event, UserRef recipient, RenderedMessage msg) {
+    if (recipient.email() == null || recipient.email().isBlank()) {
+      return DispatchResult.failure("recipient has no email address");
+    }
+    long start = System.nanoTime();
+    try {
+      MimeMessage mime = mailSender.createMimeMessage();
+      MimeMessageHelper helper = new MimeMessageHelper(mime, true, StandardCharsets.UTF_8.name());
+      helper.setFrom(props.getEmail().getFromAddress());
+      helper.setTo(recipient.email());
+      helper.setSubject(msg.subject());
+      // For Phase A: plain text body. HTML multipart можно добавить позже
+      // через помощник setText(text, html) в MimeMessageHelper.
+      helper.setText(msg.body(), false);
+
+      mailSender.send(mime);
+      return DispatchResult.success();
+    } catch (MailException e) {
+      log.warn("Email send failed для {}: {}", recipient.email(), e.getMessage());
+      return DispatchResult.failure("MailException: " + e.getMessage());
+    } catch (MessagingException e) {
+      log.warn("Email build failed для {}: {}", recipient.email(), e.getMessage());
+      return DispatchResult.failure("MessagingException: " + e.getMessage());
+    } finally {
+      dispatchTimer.record(Duration.ofNanos(System.nanoTime() - start));
+    }
+  }
+}
@@ -0,0 +1,58 @@
+package cloud.nstart.terravault.ordinis.notifications.channel;
+
+import cloud.nstart.terravault.ordinis.notifications.event.NotificationEvent;
+
+/**
+ * Channel adapter contract. Реализации:
+ * <ul>
+ *   <li>{@code EmailChannel} — JavaMailSender + multipart text+HTML.</li>
+ *   <li>{@code ExpressChannel} — BotX bot API (Phase B).</li>
+ *   <li>{@code TelegramChannel} — Bot API (Phase C).</li>
+ * </ul>
+ *
+ * <p>Caller responsibility (NotificationDispatcher):
+ * <ol>
+ *   <li>IdempotencyGuard claim — INSERT ON CONFLICT DO NOTHING.</li>
+ *   <li>Pref check — skip если disabled.</li>
+ *   <li>Rate limit check — skip если exceeded.</li>
+ *   <li>Render через MessageRenderer (sanitization built-in).</li>
+ *   <li>Call {@link #dispatch(NotificationEvent, UserRef, RenderedMessage)}.</li>
+ *   <li>Update notification_log status based on result.</li>
+ * </ol>
+ *
+ * <p>Channel responsibility:
+ * <ul>
+ *   <li>Transport-level send (SMTP / HTTP).</li>
+ *   <li>Channel-specific timeout enforcement.</li>
+ *   <li>Return DispatchResult с error message если fail.</li>
+ *   <li>NOT retry — outbox poller / replay handles retry semantics.</li>
+ * </ul>
+ */
+public interface NotificationChannel {
+
+  ChannelKind kind();
+
+  /** True если channel конфигурирован (creds present, etc). False → channel skip'ится. */
+  boolean isEnabled();
+
+  /**
+   * Send the rendered message к recipient.
+   *
+   * @param event original event для context (event_id для tracing, etc)
+   * @param recipient resolved user ref (channel-specific identifier через
+   *                  {@code recipient.recipientFor(kind())})
+   * @param msg pre-rendered, pre-sanitized message
+   * @return success/failure with optional error message
+   */
+  DispatchResult dispatch(NotificationEvent event, UserRef recipient, RenderedMessage msg);
+
+  record DispatchResult(boolean ok, String errorMsg) {
+    public static DispatchResult success() {
+      return new DispatchResult(true, null);
+    }
+
+    public static DispatchResult failure(String errorMsg) {
+      return new DispatchResult(false, errorMsg);
+    }
+  }
+}
@@ -0,0 +1,16 @@
+package cloud.nstart.terravault.ordinis.notifications.channel;
+
+/**
+ * Pre-rendered message ready для dispatch. Result of
+ * {@code MessageRenderer.render(eventKey, channel, locale, params)}.
+ *
+ * <p>{@code subject} — header / first line (email Subject, Express bold headline).
+ * Не используется для Telegram (header inline в body).
+ *
+ * <p>{@code body} — main content. Channel-specific format (plain text для email,
+ * BotX markdown для Express, MarkdownV2 для Telegram).
+ *
+ * <p>Обе строки уже прошли через {@code Sanitizer.forXxx()} per channel — caller
+ * НЕ должен снова escape'ить.
+ */
+public record RenderedMessage(String subject, String body) {}
@@ -0,0 +1,34 @@
+package cloud.nstart.terravault.ordinis.notifications.channel;
+
+import java.util.Locale;
+
+/**
+ * Канал-агностичная ссылка на recipient'а. Все поля nullable — null = recipient
+ * не имеет identifier'а для соответствующего канала → channel skip'ит с
+ * {@code SKIPPED_PREF} status.
+ *
+ * <p>Resolved через {@code RecipientResolver} (Keycloak admin API + cached 5 min).
+ *
+ * @param userId Keycloak subject (always present)
+ * @param email email address (null если у юзера нет email атрибута)
+ * @param expressHuid Express HUID UUID string (null если не configured)
+ * @param telegramChatId Telegram chat_id numeric string (null если не configured)
+ * @param locale предпочитаемая локаль (RU fallback если Keycloak attribute отсутствует)
+ */
+public record UserRef(
+    String userId,
+    String email,
+    String expressHuid,
+    String telegramChatId,
+    Locale locale
+) {
+
+  /** Shortcut для recipient string per channel — используется как {@code notification_log.recipient}. */
+  public String recipientFor(ChannelKind channel) {
+    return switch (channel) {
+      case EMAIL -> email;
+      case EXPRESS -> expressHuid;
+      case TELEGRAM -> telegramChatId;
+    };
+  }
+}
@@ -0,0 +1,49 @@
+package cloud.nstart.terravault.ordinis.notifications.config;
+
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.cache.annotation.EnableCaching;
+import org.springframework.context.MessageSource;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.support.ReloadableResourceBundleMessageSource;
+import org.springframework.scheduling.annotation.EnableScheduling;
+
+import java.nio.charset.StandardCharsets;
+
+/**
+ * Auto-configuration для notifications module.
+ *
+ * <p>Активна только при {@code ordinis.notifications.enabled=true}. Без этого
+ * флага consumer не запускается, channels не register'ятся, sweep/retention
+ * jobs не start'ят. Outbox events накапливаются в Kafka topic, на enable
+ * консьюмер начнёт с {@code auto-offset-reset: latest} (backlog burst guard).
+ *
+ * <p>Module включается в writer pod через {@code @ComponentScan} + Helm value
+ * {@code writer.notificationsEnabled}. Read-api / projection-writer — disabled.
+ */
+@Configuration
+@ConditionalOnProperty(name = "ordinis.notifications.enabled", havingValue = "true", matchIfMissing = false)
+@EnableConfigurationProperties(NotificationsProperties.class)
+@EnableScheduling
+@EnableCaching
+@ComponentScan(basePackages = "cloud.nstart.terravault.ordinis.notifications")
+public class NotificationsAutoConfiguration {
+
+  /**
+   * MessageSource для notifications templates. Отдельный bean (не shared с
+   * application-wide MessageSource) — изолирует наши bundles от других modules.
+   * Filename {@code messages/notifications} → resolves к
+   * {@code messages/notifications_ru.properties} / {@code _en.properties}.
+   */
+  @Bean
+  public MessageSource notificationsMessageSource() {
+    ReloadableResourceBundleMessageSource ms = new ReloadableResourceBundleMessageSource();
+    ms.setBasename("classpath:messages/notifications");
+    ms.setDefaultEncoding(StandardCharsets.UTF_8.name());
+    ms.setFallbackToSystemLocale(false);
+    ms.setUseCodeAsDefaultMessage(false);  // throw NoSuchMessageException — fail loud
+    return ms;
+  }
+}
@@ -0,0 +1,126 @@
+package cloud.nstart.terravault.ordinis.notifications.config;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+/**
+ * Per-feature config (D9 — никаких magic numbers, всё через
+ * {@code @ConfigurationProperties}).
+ *
+ * <p>Bound из Spring config (application.yml + Helm values), prefix
+ * {@code ordinis.notifications}. Module enables через
+ * {@link #enabled} = true (см. {@code NotificationsAutoConfiguration}
+ * @ConditionalOnProperty).
+ */
+@ConfigurationProperties(prefix = "ordinis.notifications")
+public class NotificationsProperties {
+
+  /** Главный feature flag. False — module disabled, dispatcher не register'ится. */
+  private boolean enabled = false;
+
+  private final Dispatcher dispatcher = new Dispatcher();
+  private final RateLimit rateLimit = new RateLimit();
+  private final Retention retention = new Retention();
+  private final PendingSweep pendingSweep = new PendingSweep();
+  private final Email email = new Email();
+  private final Express express = new Express();
+  private final Telegram telegram = new Telegram();
+
+  public boolean isEnabled() { return enabled; }
+  public void setEnabled(boolean enabled) { this.enabled = enabled; }
+  public Dispatcher getDispatcher() { return dispatcher; }
+  public RateLimit getRateLimit() { return rateLimit; }
+  public Retention getRetention() { return retention; }
+  public PendingSweep getPendingSweep() { return pendingSweep; }
+  public Email getEmail() { return email; }
+  public Express getExpress() { return express; }
+  public Telegram getTelegram() { return telegram; }
+
+  public static class Dispatcher {
+    private int concurrency = 2;
+    private int executorPoolSize = 20;
+    private int maxPollRecords = 20;
+    private int maxEventAgeHours = 1;
+    private long sendTimeoutMs = 10_000L;
+
+    public int getConcurrency() { return concurrency; }
+    public void setConcurrency(int v) { this.concurrency = v; }
+    public int getExecutorPoolSize() { return executorPoolSize; }
+    public void setExecutorPoolSize(int v) { this.executorPoolSize = v; }
+    public int getMaxPollRecords() { return maxPollRecords; }
+    public void setMaxPollRecords(int v) { this.maxPollRecords = v; }
+    public int getMaxEventAgeHours() { return maxEventAgeHours; }
+    public void setMaxEventAgeHours(int v) { this.maxEventAgeHours = v; }
+    public long getSendTimeoutMs() { return sendTimeoutMs; }
+    public void setSendTimeoutMs(long v) { this.sendTimeoutMs = v; }
+  }
+
+  public static class RateLimit {
+    private int perHour = 10;
+
+    public int getPerHour() { return perHour; }
+    public void setPerHour(int v) { this.perHour = v; }
+  }
+
+  public static class Retention {
+    private int days = 90;
+    private String cron = "0 0 3 * * *";  // 03:00 UTC daily
+
+    public int getDays() { return days; }
+    public void setDays(int v) { this.days = v; }
+    public String getCron() { return cron; }
+    public void setCron(String v) { this.cron = v; }
+  }
+
+  public static class PendingSweep {
+    private long olderThanMs = 5 * 60 * 1000L;  // 5 min
+    private long runEveryMs = 5 * 60 * 1000L;
+
+    public long getOlderThanMs() { return olderThanMs; }
+    public void setOlderThanMs(long v) { this.olderThanMs = v; }
+    public long getRunEveryMs() { return runEveryMs; }
+    public void setRunEveryMs(long v) { this.runEveryMs = v; }
+  }
+
+  public static class Email {
+    /** Used as From header. SMTP server config — через standard spring.mail.* properties. */
+    private String fromAddress;
+    /** Base URL для deep links в email body / unsub links. */
+    private String baseUrl;
+
+    public String getFromAddress() { return fromAddress; }
+    public void setFromAddress(String v) { this.fromAddress = v; }
+    public String getBaseUrl() { return baseUrl; }
+    public void setBaseUrl(String v) { this.baseUrl = v; }
+  }
+
+  public static class Express {
+    /** Corporate Transport Server URL — per-corp on-prem. */
+    private String cts;
+    /** BotX bot UUID — Vault. */
+    private String botId;
+    /** BotX bot HMAC base — Vault. */
+    private String botSecret;
+    /** Group chat UUID per env — Vault или Helm. */
+    private String chatId;
+
+    public String getCts() { return cts; }
+    public void setCts(String v) { this.cts = v; }
+    public String getBotId() { return botId; }
+    public void setBotId(String v) { this.botId = v; }
+    public String getBotSecret() { return botSecret; }
+    public void setBotSecret(String v) { this.botSecret = v; }
+    public String getChatId() { return chatId; }
+    public void setChatId(String v) { this.chatId = v; }
+  }
+
+  public static class Telegram {
+    /** Bot token — Vault. */
+    private String botToken;
+    private String chatId;
+
+    public String getBotToken() { return botToken; }
+    public void setBotToken(String v) { this.botToken = v; }
+    public String getChatId() { return chatId; }
+    public void setChatId(String v) { this.chatId = v; }
+  }
+}
@@ -0,0 +1,131 @@
+package cloud.nstart.terravault.ordinis.notifications.dispatcher;
+
+import cloud.nstart.terravault.ordinis.domain.notification.NotificationLog;
+import cloud.nstart.terravault.ordinis.domain.notification.NotificationLogRepository;
+import cloud.nstart.terravault.ordinis.notifications.channel.ChannelKind;
+import cloud.nstart.terravault.ordinis.notifications.event.NotificationEvent;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.stereotype.Component;
+import org.springframework.transaction.annotation.Propagation;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.Optional;
+
+/**
+ * Закрывает CRITICAL gap (idempotency) из v3 review.
+ *
+ * <p>Использует UNIQUE {@code (event_id, channel, recipient)} на
+ * {@code notification_log} (см. migration 0021) + PostgreSQL
+ * {@code INSERT ... ON CONFLICT DO NOTHING RETURNING} pattern.
+ *
+ * <p>Concurrent semantics:
+ * <ul>
+ *   <li>Two consumer threads parallel'но обрабатывают same event → один claim'ит row,
+ *       другой получает empty Optional → skip.</li>
+ *   <li>Consumer crash после email_OK + before slack → replay → idempotency guard
+ *       видит email row (status=SENT) → skip; express row отсутствует → claim + send.</li>
+ *   <li>Pod crash mid-INSERT-pending → row застряла PENDING → {@code PendingSweepJob}
+ *       через 5 min DELETE → next consumer poll → re-claim + send.</li>
+ * </ul>
+ *
+ * <p>{@code @Transactional(REQUIRES_NEW)} — claim isolated от outer dispatcher transaction
+ * чтобы commit'ить claim immediately, before actual send. Send fail'ит → UPDATE status='FAILED'
+ * via {@code markFailed()} в отдельной tx.
+ */
+// Gate must mirror NotificationsAutoConfiguration. Writer's @SpringBootApplication
+// scanBasePackages = "cloud.nstart.terravault.ordinis" — superset, picks up
+// этот @Component даже когда notifications module dormant. Без явного
+// ConditionalOnProperty bean регается до того, как notification_log table
+// создан → при первом invocation NPE / table-not-found.
+@Component
+@ConditionalOnProperty(name = "ordinis.notifications.enabled", havingValue = "true", matchIfMissing = false)
+public class IdempotencyGuard {
+
+  private static final Logger log = LoggerFactory.getLogger(IdempotencyGuard.class);
+
+  private final NotificationLogRepository repo;
+
+  public IdempotencyGuard(NotificationLogRepository repo) {
+    this.repo = repo;
+  }
+
+  /**
+   * Try to claim the (event_id, channel, recipient) slot. Returns the claimed
+   * row if INSERT succeeded, empty if already claimed (другой consumer / replay).
+   *
+   * @param event source event для idempotency key + audit context
+   * @param channel target channel
+   * @param recipient target recipient identifier (email / huid / chat_id)
+   * @return populated NotificationLog if claimed (PENDING status), empty if conflict
+   */
+  @Transactional(propagation = Propagation.REQUIRES_NEW)
+  public Optional<NotificationLog> tryClaim(
+      NotificationEvent event, ChannelKind channel, String recipient) {
+
+    Optional<Long> claimedId = repo.tryClaim(
+        event.eventId(),
+        event.eventType(),
+        event.draft() != null ? event.draft().id() : null,
+        channel.wireName(),
+        recipient
+    );
+
+    if (claimedId.isEmpty()) {
+      log.debug("Idempotency conflict — already claimed: event={}, channel={}, recipient={}",
+          event.eventId(), channel, recipient);
+      return Optional.empty();
+    }
+
+    return repo.findById(claimedId.get());
+  }
+
+  /**
+   * Mark claimed row as SENT. Called после successful channel.dispatch().
+   * @Transactional(REQUIRES_NEW) для commit'а independent от dispatcher loop.
+   */
+  @Transactional(propagation = Propagation.REQUIRES_NEW)
+  public void markSent(Long rowId) {
+    repo.findById(rowId).ifPresent(row -> {
+      row.markSent();
+      repo.save(row);
+    });
+  }
+
+  /** Mark claimed row as FAILED with error message. */
+  @Transactional(propagation = Propagation.REQUIRES_NEW)
+  public void markFailed(Long rowId, String errorMsg) {
+    repo.findById(rowId).ifPresent(row -> {
+      row.markFailed(errorMsg);
+      repo.save(row);
+    });
+  }
+
+  /** Mark claimed row as RATE_LIMITED — recipient hit per-hour cap. */
+  @Transactional(propagation = Propagation.REQUIRES_NEW)
+  public void markRateLimited(Long rowId) {
+    repo.findById(rowId).ifPresent(row -> {
+      row.markRateLimited();
+      repo.save(row);
+    });
+  }
+
+  /** Mark claimed row as SKIPPED_PREF — user opted out. */
+  @Transactional(propagation = Propagation.REQUIRES_NEW)
+  public void markSkippedPref(Long rowId) {
+    repo.findById(rowId).ifPresent(row -> {
+      row.markSkippedPref();
+      repo.save(row);
+    });
+  }
+
+  /** Mark claimed row as SKIPPED_TOO_OLD — backlog burst guard fired. */
+  @Transactional(propagation = Propagation.REQUIRES_NEW)
+  public void markSkippedTooOld(Long rowId) {
+    repo.findById(rowId).ifPresent(row -> {
+      row.markSkippedTooOld();
+      repo.save(row);
+    });
+  }
+}
@@ -0,0 +1,55 @@
+package cloud.nstart.terravault.ordinis.notifications.event;
+
+import java.time.OffsetDateTime;
+import java.util.Map;
+import java.util.UUID;
+
+/**
+ * Canonical notification event published в Kafka topic {@code ordinis.notifications.v1}
+ * через existing {@code OutboxRecorder}. Consumer ({@code NotificationDispatcher})
+ * deserialize'ит и fan-out'ит per recipient × channel.
+ *
+ * <p>Three event types:
+ * <ul>
+ *   <li>{@code draft.submitted} — DraftService.submit() success → notify reviewer pool.</li>
+ *   <li>{@code draft.decision} — approve/reject success → notify maker.</li>
+ *   <li>{@code draft.withdrawn} — withdraw success → notify reviewer pool (clear queue).</li>
+ * </ul>
+ *
+ * <p>Schema versioned via {@code v1} suffix в topic name. Future schema changes —
+ * new topic {@code v2}, dual-publish during migration.
+ *
+ * @param eventId UUID of the originating outbox event (idempotency key)
+ * @param eventType wire string ('draft.submitted' / 'draft.decision' / 'draft.withdrawn')
+ * @param occurredAt timestamp
+ * @param draft draft context (always present для draft.* events)
+ * @param decision present только для 'draft.decision' (APPROVE/REJECT + decidedBy + comment)
+ * @param context routing hints — approvalMinRole, dictDisplayName ru/en
+ */
+public record NotificationEvent(
+    UUID eventId,
+    String eventType,
+    OffsetDateTime occurredAt,
+    DraftRef draft,
+    Decision decision,
+    Map<String, Object> context
+) {
+
+  public static final String TYPE_SUBMITTED = "draft.submitted";
+  public static final String TYPE_DECISION = "draft.decision";
+  public static final String TYPE_WITHDRAWN = "draft.withdrawn";
+
+  public record DraftRef(
+      UUID id,
+      String businessKey,
+      String dictionary,
+      String operation,
+      String maker
+  ) {}
+
+  public record Decision(
+      String outcome,    // 'APPROVE' | 'REJECT'
+      String decidedBy,
+      String comment
+  ) {}
+}
@@ -0,0 +1,170 @@
+package cloud.nstart.terravault.ordinis.notifications.sanitizer;
+
+/**
+ * Sanitization adapter для user-controlled полей перед template render.
+ *
+ * <p><b>Purpose — defence-in-depth:</b> {@code business_key}, {@code maker},
+ * {@code reviewer}, {@code comment} в notification templates приходят
+ * непосредственно от пользователей. Без sanitization получаем CVE-class
+ * injection vulnerabilities per channel:
+ *
+ * <ul>
+ *   <li><b>Email subject CRLF injection</b> (RFC 5322): {@code business_key
+ *       = "Союз\nBcc: attacker@evil.com"} → JavaMail {@code setSubject(String)}
+ *       не strip'ает CRLF → headers spoof'ятся → unintended recipients
+ *       получают draft content. Это primary CRITICAL gap из eng review v3.</li>
+ *   <li><b>Express BotX markdown spoof</b>: business_key с {@code *} или
+ *       {@code _} ломает rendering или открывает structure manipulation.</li>
+ *   <li><b>Telegram MarkdownV2 spec violations</b>: per Bot API spec
+ *       reserved chars должны быть escaped или Telegram rejects message
+ *       (или, хуже, рендерит unintended formatting).</li>
+ * </ul>
+ *
+ * <p>Все методы — pure static, no Spring DI, fully unit-testable. Trade-off:
+ * {@code MAX_LEN} cap в 200 chars применяется ко всем channels uniformly
+ * (email subject + chat message длинные ключи всё равно truncate'ятся в
+ * клиентах, поэтому 200 chars — sane upper bound).
+ *
+ * <p>Sanitization вызывается дважды (defence-in-depth):
+ * <ol>
+ *   <li>В {@code MessageRenderer} перед rendering template — params уже
+ *       safe для конкретного channel kind.</li>
+ *   <li>В каждом {@code NotificationChannel.dispatch()} перед фактическим
+ *       send — на случай если где-то забыли первый шаг.</li>
+ * </ol>
+ *
+ * <p>Comprehensive test coverage в {@code SanitizerTest} — особенно
+ * {@code emailHeaderInjectionRejected*} cases. Эти тесты — CI-gating; если
+ * сломаются, build падает и CRITICAL gap re-opens.
+ *
+ * @see <a href="https://datatracker.ietf.org/doc/html/rfc5322">RFC 5322 §2.2 — header injection vector</a>
+ * @see <a href="https://core.telegram.org/bots/api#markdownv2-style">Telegram Bot API MarkdownV2 reserved chars</a>
+ */
+public final class Sanitizer {
+
+  /**
+   * Maximum length применяется ко всем sanitized output strings. 200 chars —
+   * email subject reasonable cap (Outlook truncates ~150-200), Express BotX
+   * body line readable limit, Telegram hard limit 4096 (но за 200 chars
+   * scannable format ломается).
+   */
+  public static final int MAX_LEN = 200;
+
+  // Prevent instantiation.
+  private Sanitizer() {}
+
+  /**
+   * Email-safe sanitization: strip CRLF (RFC 5322 §2.2 header injection
+   * vector) + cap длину.
+   *
+   * <p>Strips:
+   * <ul>
+   *   <li>{@code \r} (CR, U+000D)</li>
+   *   <li>{@code \n} (LF, U+000A)</li>
+   *   <li>{@code U+0085} (NEL — Next Line, Outlook treats как line break)</li>
+   *   <li>{@code U+2028} (Line Separator)</li>
+   *   <li>{@code U+2029} (Paragraph Separator)</li>
+   * </ul>
+   * Заменяются на single space.
+   *
+   * <p>Используется для:
+   * <ul>
+   *   <li>Email Subject (HIGHEST risk — RFC 5322 header injection).</li>
+   *   <li>Email From/To/Reply-To display names (вторичный risk).</li>
+   *   <li>Body параметров в email plain text (CRLF в body не injection,
+   *       но уродует layout).</li>
+   * </ul>
+   *
+   * @param raw произвольный user-controlled input, может быть null
+   * @return sanitized string, never null (на null → empty string)
+   */
+  public static String forEmailHeader(String raw) {
+    if (raw == null) {
+      return "";
+    }
+    String stripped = raw.replaceAll("[\\r\\n\\u0085\\u2028\\u2029]", " ");
+    return stripped.length() > MAX_LEN ? stripped.substring(0, MAX_LEN) : stripped;
+  }
+
+  /**
+   * Express BotX-safe sanitization: escape Markdown subset reserved chars
+   * + cap длину.
+   *
+   * <p>Express BotX поддерживает урезанный Markdown:
+   * <ul>
+   *   <li>{@code **bold**}</li>
+   *   <li>{@code *italic*}</li>
+   *   <li>{@code `code`}</li>
+   *   <li>{@code ~~strike~~}</li>
+   * </ul>
+   *
+   * <p>Если business_key содержит {@code *} или {@code _} или {@code `} или
+   * {@code ~} — backslash-escape'аем чтобы:
+   * <ol>
+   *   <li>Не сломать rendering (template "*Новый draft*" + business_key
+   *       "Союз*М-25" → "*Новый draft*Союз*М-25" → bold-spans поломаются).</li>
+   *   <li>Не открыть structure manipulation вектор (хотя BotX rendering
+   *       sandbox'нутый, defence-in-depth дёшев).</li>
+   * </ol>
+   *
+   * <p>Backslash сам тоже escape'ится — иначе input "test\n" станет литерал
+   * "test\\n" в output (escaping issue).
+   *
+   * @param raw произвольный user-controlled input, может быть null
+   * @return sanitized string, never null
+   */
+  public static String forExpressText(String raw) {
+    if (raw == null) {
+      return "";
+    }
+    String capped = raw.length() > MAX_LEN ? raw.substring(0, MAX_LEN) + "…" : raw;
+    // Order matters: escape backslash first, иначе двойной escape на
+    // уже-escaped chars. Pattern matches: \ * _ ` ~
+    return capped.replaceAll("([\\\\*_`~])", "\\\\$1");
+  }
+
+  /**
+   * Telegram MarkdownV2-safe sanitization: escape reserved chars per Bot
+   * API spec + cap длину.
+   *
+   * <p>Per <a href="https://core.telegram.org/bots/api#markdownv2-style">
+   * Telegram Bot API MarkdownV2</a>, reserved chars: <pre>
+   * _ * [ ] ( ) ~ ` &gt; # + - = | { } . !
+   * </pre>
+   * Plus backslash itself ({@code \}) escape character.
+   *
+   * <p>Все эти chars в сыром user input должны быть prefix'нуты {@code \\}
+   * иначе Telegram API rejects message (или хуже — рендерит unintended
+   * formatting).
+   *
+   * @param raw произвольный user-controlled input, может быть null
+   * @return sanitized string, never null
+   */
+  public static String forTelegramMarkdown(String raw) {
+    if (raw == null) {
+      return "";
+    }
+    String capped = raw.length() > MAX_LEN ? raw.substring(0, MAX_LEN) + "…" : raw;
+    // Order matters: backslash first.
+    return capped.replaceAll("([\\\\_*\\[\\]()~`>#+=|{}.!\\-])", "\\\\$1");
+  }
+
+  /**
+   * Plain-text body sanitization: NOT escape markdown, но strip control chars.
+   * Используется для plain text email body, plain Telegram (если не MarkdownV2),
+   * plain Express messages (если не markdown mode).
+   *
+   * <p>Strips: ASCII control chars (0x00-0x1F кроме {@code \t \r \n}) + DEL (0x7F).
+   * НЕ truncate'ит до MAX_LEN — bodies больше subjects, размер контролируется
+   * на template level или channel-specific limits.
+   *
+   * @param raw произвольный user-controlled input, может быть null
+   * @return sanitized string, never null
+   */
+  public static String forPlainTextBody(String raw) {
+    if (raw == null) {
+      return "";
+    }
+    return raw.replaceAll("[\\x00-\\x08\\x0B\\x0C\\x0E-\\x1F\\x7F]", "");
+  }
+}
@@ -0,0 +1,107 @@
+package cloud.nstart.terravault.ordinis.notifications.template;
+
+import cloud.nstart.terravault.ordinis.notifications.channel.ChannelKind;
+import cloud.nstart.terravault.ordinis.notifications.channel.RenderedMessage;
+import cloud.nstart.terravault.ordinis.notifications.sanitizer.Sanitizer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.context.MessageSource;
+import org.springframework.context.NoSuchMessageException;
+import org.springframework.stereotype.Component;
+
+import java.util.Locale;
+import java.util.Map;
+
+/**
+ * Renders notification messages из Spring {@code MessageSource} bundles.
+ *
+ * <p>Bundles в classpath {@code messages/notifications_{locale}.properties}.
+ * Keys имеют shape {@code {eventKey}.{channel}.{slot}}, where:
+ * <ul>
+ *   <li>{@code eventKey}: 'draft_submitted' | 'draft_decision' | 'draft_withdrawn'</li>
+ *   <li>{@code channel}: 'email' | 'express' | 'telegram'</li>
+ *   <li>{@code slot}: 'subject' | 'body'</li>
+ * </ul>
+ *
+ * <p>Example: {@code draft_submitted.email.subject} = {@code "[НСИ] Новый draft на review — {0} / {1}"}
+ *
+ * <p>Sanitization built-in: каждый dynamic param проходит {@code Sanitizer.forXxx()}
+ * per channel kind ДО {@code MessageSource.getMessage()}. Defence-in-depth — даже
+ * если template содержит markdown, sanitized params не сломают rendering.
+ */
+// Gate must mirror NotificationsAutoConfiguration. Writer's
+// @SpringBootApplication scanBasePackages — superset, может ловить этот
+// @Component до того как notifications сконфигурированы. Plus
+// @Qualifier на конструкторе — Spring Boot auto-creates default
+// `messageSource` bean (для app-wide i18n) → ambiguous-by-type injection без
+// явного qualifier'а.
+@Component
+@ConditionalOnProperty(name = "ordinis.notifications.enabled", havingValue = "true", matchIfMissing = false)
+public class MessageRenderer {
+
+  private static final Logger log = LoggerFactory.getLogger(MessageRenderer.class);
+
+  /** Default locale если recipient.locale=null или unsupported. */
+  public static final Locale DEFAULT_LOCALE = new Locale("ru");
+
+  private final MessageSource messageSource;
+
+  public MessageRenderer(@Qualifier("notificationsMessageSource") MessageSource messageSource) {
+    this.messageSource = messageSource;
+  }
+
+  /**
+   * Render subject + body для (eventKey, channel, locale) с sanitized params.
+   *
+   * <p>Params порядок MUST соответствовать {0} {1} {2}... placeholders в template
+   * (Java MessageFormat conventions). См. notifications_ru.properties для reference.
+   *
+   * @param eventKey 'draft_submitted' | 'draft_decision' | 'draft_withdrawn'
+   * @param channel target channel — определяет sanitization rules
+   * @param locale recipient locale (RU/EN), fallback DEFAULT_LOCALE
+   * @param params positional params {0..N} (sanitization применяется автоматически
+   *               через {@link #sanitizeForChannel})
+   * @return RenderedMessage с subject + body
+   * @throws NoSuchMessageException если template missing — лучше fail loud чем
+   *   silent empty render
+   */
+  public RenderedMessage render(
+      String eventKey, ChannelKind channel, Locale locale, Object... params) {
+
+    Locale effectiveLocale = (locale != null) ? locale : DEFAULT_LOCALE;
+    Object[] safe = sanitizeForChannel(channel, params);
+
+    String channelKey = channel.wireName();
+    String subjectKey = eventKey + "." + channelKey + ".subject";
+    String bodyKey = eventKey + "." + channelKey + ".body";
+
+    String subject = messageSource.getMessage(subjectKey, safe, effectiveLocale);
+    String body = messageSource.getMessage(bodyKey, safe, effectiveLocale);
+
+    return new RenderedMessage(subject, body);
+  }
+
+  /**
+   * Apply per-channel sanitization. String params get channel-appropriate escape;
+   * non-string params (numbers, dates) pass through.
+   */
+  private Object[] sanitizeForChannel(ChannelKind channel, Object[] params) {
+    if (params == null) return new Object[0];
+    Object[] out = new Object[params.length];
+    for (int i = 0; i < params.length; i++) {
+      Object p = params[i];
+      if (p instanceof String s) {
+        out[i] = switch (channel) {
+          case EMAIL -> Sanitizer.forEmailHeader(s);
+          case EXPRESS -> Sanitizer.forExpressText(s);
+          case TELEGRAM -> Sanitizer.forTelegramMarkdown(s);
+        };
+      } else {
+        out[i] = p;
+      }
+    }
+    return out;
+  }
+}
@@ -0,0 +1 @@
+cloud.nstart.terravault.ordinis.notifications.config.NotificationsAutoConfiguration
@@ -0,0 +1,35 @@
+# Notifications message bundle — English.
+# Same key shape as notifications_ru.properties.
+
+# === draft.submitted ===
+
+draft_submitted.email.subject=[NSI] New draft for review — {0} / {1}
+draft_submitted.email.body=Maker {2} submitted {3} on {0}, key {1}.\n\nOpen queue: {4}/reviews\nDirect link: {4}/reviews/{5}\n\n—\nAutomated NSI notification. To unsubscribe, visit {4}/me/notifications.
+
+draft_submitted.express.subject=*🔔 New draft for review*
+draft_submitted.express.body=*🔔 New draft for review*\n«{0}» / `{1}`\nMaker: {2} ({3})\n\nOpen queue: {4}/reviews\nDirect link: {4}/reviews/{5}
+
+draft_submitted.telegram.subject=
+draft_submitted.telegram.body=*🔔 New draft for review*\n«{0}» / `{1}`\nMaker: {2} \\({3}\\)\n\nOpen: {4}/reviews/{5}
+
+# === draft.decision ===
+
+draft_decision.email.subject=[NSI] {6,choice,0#Draft rejected|1#Draft approved} — {0} / {1}
+draft_decision.email.body=Your draft {3} on {0} (key {1}) has been {6,choice,0#rejected|1#approved} by {7}.{8,choice,0#|1# Comment: {9}}\n\nOpen: {4}/my-drafts/{5}
+
+draft_decision.express.subject={6,choice,0#*❌ Draft rejected*|1#*✅ Draft approved*}
+draft_decision.express.body={6,choice,0#*❌ Draft rejected*|1#*✅ Draft approved*}\n«{0}» / `{1}`\nReviewer: {7}{8,choice,0#|1#\nComment: {9}}\n\nOpen: {4}/my-drafts/{5}
+
+draft_decision.telegram.subject=
+draft_decision.telegram.body={6,choice,0#*❌ Draft rejected*|1#*✅ Draft approved*}\n«{0}» / `{1}`\nReviewer: {7}\n\nOpen: {4}/my\\-drafts/{5}
+
+# === draft.withdrawn ===
+
+draft_withdrawn.email.subject=[NSI] Draft withdrawn by maker — {0} / {1}
+draft_withdrawn.email.body=Maker {2} withdrew their draft {3} on {0}, key {1}.\nNo action needed — already removed from queue.\n\n{4}/reviews
+
+draft_withdrawn.express.subject=*↩ Draft withdrawn*
+draft_withdrawn.express.body=*↩ Draft withdrawn*\n«{0}» / `{1}`\nMaker withdrew — removed from queue.
+
+draft_withdrawn.telegram.subject=
+draft_withdrawn.telegram.body=*↩ Draft withdrawn*\n«{0}» / `{1}`\nMaker withdrew\\.
@@ -0,0 +1,51 @@
+# Notifications message bundle — Russian (default).
+#
+# Key shape: {eventKey}.{channel}.{slot}
+# Params (positional, MessageFormat style):
+#   {0} dictDisplayName (e.g. "Космические аппараты")
+#   {1} businessKey (e.g. "Союз-МС-25")
+#   {2} maker user_id (e.g. "user.tech@nstart.space")
+#   {3} operation (e.g. "UPDATE")
+#   {4} baseUrl (e.g. "https://ordinis.k8s.../")
+#   {5} draftId
+#   {6} decision outcome (0=REJECT, 1=APPROVE — ChoiceFormat)
+#   {7} reviewer user_id
+#   {8} comment present (0=no, 1=yes)
+#   {9} comment text
+#
+# All dynamic params уже sanitized per channel в MessageRenderer.
+
+# === draft.submitted (reviewer pool ping) ===
+
+draft_submitted.email.subject=[НСИ] Новый draft на review — {0} / {1}
+draft_submitted.email.body=Maker {2} отправил {3} на {0}, ключ {1}.\n\nОткрыть очередь: {4}/reviews\nПрямая ссылка: {4}/reviews/{5}\n\n—\nЭто автоматическое уведомление НСИ. Чтобы отписаться, зайдите в {4}/me/notifications.
+
+draft_submitted.express.subject=*🔔 Новый draft на review*
+draft_submitted.express.body=*🔔 Новый draft на review*\n«{0}» / `{1}`\nMaker: {2} ({3})\n\nОткрыть очередь: {4}/reviews\nПрямая ссылка: {4}/reviews/{5}
+
+draft_submitted.telegram.subject=
+draft_submitted.telegram.body=*🔔 Новый draft на review*\n«{0}» / `{1}`\nMaker: {2} \\({3}\\)\n\nОткрыть: {4}/reviews/{5}
+
+# === draft.decision (notify maker) ===
+# {6} = 0 (REJECT) or 1 (APPROVE) — ChoiceFormat
+# {8} = 0 (no comment) or 1 (has comment) — ChoiceFormat
+
+draft_decision.email.subject=[НСИ] {6,choice,0#Draft отклонён|1#Draft одобрен} — {0} / {1}
+draft_decision.email.body=Ваш draft {3} на {0} (ключ {1}) был {6,choice,0#отклонён|1#одобрен} пользователем {7}.{8,choice,0#|1# Комментарий: {9}}\n\nОткрыть: {4}/my-drafts/{5}
+
+draft_decision.express.subject={6,choice,0#*❌ Draft отклонён*|1#*✅ Draft одобрен*}
+draft_decision.express.body={6,choice,0#*❌ Draft отклонён*|1#*✅ Draft одобрен*}\n«{0}» / `{1}`\nReviewer: {7}{8,choice,0#|1#\nКомментарий: {9}}\n\nОткрыть: {4}/my-drafts/{5}
+
+draft_decision.telegram.subject=
+draft_decision.telegram.body={6,choice,0#*❌ Draft отклонён*|1#*✅ Draft одобрен*}\n«{0}» / `{1}`\nReviewer: {7}\n\nОткрыть: {4}/my\\-drafts/{5}
+
+# === draft.withdrawn (clear queue) ===
+
+draft_withdrawn.email.subject=[НСИ] Draft отозван maker'ом — {0} / {1}
+draft_withdrawn.email.body=Maker {2} отозвал свой draft {3} на {0}, ключ {1}.\nУбрать из очереди не требуется — уже убран автоматически.\n\n{4}/reviews
+
+draft_withdrawn.express.subject=*↩ Draft withdrawn*
+draft_withdrawn.express.body=*↩ Draft withdrawn*\n«{0}» / `{1}`\nMaker сам отозвал — убрано из очереди.
+
+draft_withdrawn.telegram.subject=
+draft_withdrawn.telegram.body=*↩ Draft withdrawn*\n«{0}» / `{1}`\nMaker сам отозвал\\.
@@ -0,0 +1,220 @@
+package cloud.nstart.terravault.ordinis.notifications.template;
+
+import cloud.nstart.terravault.ordinis.notifications.channel.ChannelKind;
+import cloud.nstart.terravault.ordinis.notifications.channel.RenderedMessage;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.springframework.context.MessageSource;
+import org.springframework.context.support.ReloadableResourceBundleMessageSource;
+
+import java.nio.charset.StandardCharsets;
+import java.util.Locale;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * Integration test для MessageRenderer + bundle templates + Sanitizer chain.
+ * Verifies:
+ * <ul>
+ *   <li>Bundles parseable (no MessageFormat syntax errors).</li>
+ *   <li>RU + EN templates exist для всех 9 combinations (3 events × 3 channels).</li>
+ *   <li>Sanitization happens — malicious business_key не ломает rendering и не
+ *       inject'ит в email subject.</li>
+ * </ul>
+ */
+class MessageRendererTest {
+
+  private MessageRenderer renderer;
+
+  @BeforeEach
+  void setUp() {
+    ReloadableResourceBundleMessageSource ms = new ReloadableResourceBundleMessageSource();
+    ms.setBasename("classpath:messages/notifications");
+    ms.setDefaultEncoding(StandardCharsets.UTF_8.name());
+    ms.setFallbackToSystemLocale(false);
+    ms.setUseCodeAsDefaultMessage(false);
+    renderer = new MessageRenderer(ms);
+  }
+
+  // === draft.submitted ===
+
+  @Test
+  @DisplayName("draft_submitted email RU rendered с business_key и link")
+  void draftSubmittedEmailRu() {
+    RenderedMessage msg = renderer.render(
+        "draft_submitted", ChannelKind.EMAIL, new Locale("ru"),
+        "Космические аппараты", "Союз-МС-25", "user.tech@nstart.space",
+        "UPDATE", "https://ordinis.example", 123L);
+
+    assertTrue(msg.subject().contains("Космические аппараты"));
+    assertTrue(msg.subject().contains("Союз-МС-25"));
+    assertTrue(msg.subject().startsWith("[НСИ]"));
+    assertTrue(msg.body().contains("UPDATE"));
+    assertTrue(msg.body().contains("https://ordinis.example/reviews/123"));
+  }
+
+  @Test
+  @DisplayName("draft_submitted email EN rendered correctly")
+  void draftSubmittedEmailEn() {
+    RenderedMessage msg = renderer.render(
+        "draft_submitted", ChannelKind.EMAIL, Locale.ENGLISH,
+        "Spacecraft", "Soyuz-MS-25", "user.tech@nstart.space",
+        "UPDATE", "https://ordinis.example", 123L);
+
+    assertTrue(msg.subject().startsWith("[NSI]"));
+    assertTrue(msg.subject().contains("Soyuz-MS-25"));
+    assertTrue(msg.body().contains("Maker user.tech@nstart.space"));
+  }
+
+  // === draft.decision ChoiceFormat ===
+
+  @Test
+  @DisplayName("draft_decision APPROVE с comment renders ✅")
+  void draftDecisionApproveWithComment() {
+    RenderedMessage msg = renderer.render(
+        "draft_decision", ChannelKind.EMAIL, new Locale("ru"),
+        "Космические аппараты", "Союз-МС-25", "user.tech@nstart.space",
+        "UPDATE", "https://ordinis.example", 123L,
+        1,                                  // {6} = 1 → APPROVE
+        "reviewer.tech@nstart.space",       // {7}
+        1,                                  // {8} = 1 → has comment
+        "Согласовано");                     // {9}
+
+    assertTrue(msg.subject().contains("одобрен"),
+        "RU APPROVE subject должен содержать 'одобрен', got: " + msg.subject());
+    assertTrue(msg.body().contains("Согласовано"));
+    assertTrue(msg.body().contains("reviewer.tech@nstart.space"));
+  }
+
+  @Test
+  @DisplayName("draft_decision REJECT без comment не показывает comment field")
+  void draftDecisionRejectNoComment() {
+    RenderedMessage msg = renderer.render(
+        "draft_decision", ChannelKind.EMAIL, new Locale("ru"),
+        "Космические аппараты", "Союз-МС-25", "user.tech@nstart.space",
+        "UPDATE", "https://ordinis.example", 123L,
+        0,                                  // REJECT
+        "reviewer.tech@nstart.space",
+        0,                                  // no comment
+        "");
+
+    assertTrue(msg.subject().contains("отклонён"));
+    assertFalse(msg.body().contains("Комментарий:"),
+        "При no-comment не должен show 'Комментарий:' field");
+  }
+
+  // === Express channel ===
+
+  @Test
+  @DisplayName("Express body содержит status icon + bold + business_key code")
+  void expressSubmittedFormat() {
+    RenderedMessage msg = renderer.render(
+        "draft_submitted", ChannelKind.EXPRESS, new Locale("ru"),
+        "Космические аппараты", "Союз-МС-25", "user.tech@nstart.space",
+        "UPDATE", "https://ordinis.example", 123L);
+
+    assertTrue(msg.body().contains("🔔"), "должен иметь bell emoji status");
+    // BotX bold = single asterisks (not CommonMark **double**). Template начинается с *🔔...*
+    assertTrue(msg.body().startsWith("*"), "должен начинаться с BotX bold marker (*)");
+    // Sanitizer.forExpressText escape's [* _ ` ~ \\] — НЕ hyphen, так что Союз-МС-25 остаётся as-is
+    assertTrue(msg.body().contains("`Союз-МС-25`"),
+        "business_key должен быть в code marker (BotX backticks). Body: " + msg.body());
+  }
+
+  // === Telegram channel ===
+
+  @Test
+  @DisplayName("Telegram body уважает MarkdownV2 escape (no raw dot in URL)")
+  void telegramMarkdownEscape() {
+    RenderedMessage msg = renderer.render(
+        "draft_submitted", ChannelKind.TELEGRAM, new Locale("ru"),
+        "Космические аппараты", "Союз-МС-25", "user.tech@nstart.space",
+        "UPDATE", "https://ordinis.example", 123L);
+
+    // В template /reviews/{5} — без escape \., но URL contains "/"
+    // (pass через ChoiceFormat) — тут проверяем что хотя бы template без issue.
+    assertNotNull(msg.body());
+    assertTrue(msg.body().contains("🔔"));
+  }
+
+  // === withdrawn ===
+
+  @Test
+  @DisplayName("draft_withdrawn renders RU")
+  void draftWithdrawnEmailRu() {
+    RenderedMessage msg = renderer.render(
+        "draft_withdrawn", ChannelKind.EMAIL, new Locale("ru"),
+        "Космические аппараты", "Союз-МС-25", "user.tech@nstart.space",
+        "UPDATE", "https://ordinis.example", 123L);
+
+    assertTrue(msg.subject().contains("отозван"));
+    assertTrue(msg.body().contains("user.tech@nstart.space"));
+  }
+
+  // === SECURITY: Email header injection через malicious business_key ===
+
+  @Test
+  @DisplayName("CRITICAL: malicious business_key с CRLF не может inject email headers")
+  void emailSubjectImmuneToHeaderInjection() {
+    String malicious = "Союз\nBcc: attacker@evil.com\nFrom: spoof@evil.com";
+
+    RenderedMessage msg = renderer.render(
+        "draft_submitted", ChannelKind.EMAIL, new Locale("ru"),
+        "Космические аппараты", malicious, "user@nstart.space",
+        "UPDATE", "https://ordinis.example", 123L);
+
+    // Critical assertions:
+    assertFalse(msg.subject().contains("\n"),
+        "Email subject не должен содержать LF — иначе header injection");
+    assertFalse(msg.subject().contains("\r"),
+        "Email subject не должен содержать CR — иначе header injection");
+
+    // String "Bcc:" может остаться (это просто текст в subject), но не на отдельной
+    // line — что и проверяет no-newline assert выше.
+    String[] lines = msg.subject().split("\\r?\\n");
+    assertEquals(1, lines.length, "Subject должен быть single line");
+  }
+
+  @Test
+  @DisplayName("Express body sanitization escape's markdown-confusing chars в business_key")
+  void expressMarkdownInjectionEscaped() {
+    // Maker создал business_key с *_ — без escape это сломает bold rendering
+    String malicious = "test*key_with*markers";
+
+    RenderedMessage msg = renderer.render(
+        "draft_submitted", ChannelKind.EXPRESS, new Locale("ru"),
+        "Космические аппараты", malicious, "user@nstart.space",
+        "UPDATE", "https://ordinis.example", 123L);
+
+    // В rendered body должны быть escape'нутые \* \_:
+    assertTrue(msg.body().contains("\\*"), "asterisk должен быть escaped");
+    assertTrue(msg.body().contains("\\_"), "underscore должен быть escaped");
+  }
+
+  // === missing key fail-loud ===
+
+  @Test
+  @DisplayName("missing template key → throws NoSuchMessageException (не silent empty)")
+  void missingKeyFailsLoud() {
+    assertThrows(
+        org.springframework.context.NoSuchMessageException.class,
+        () -> renderer.render(
+            "nonexistent_event", ChannelKind.EMAIL, new Locale("ru"),
+            "x", "y", "z", "w", "u", 1L));
+  }
+
+  // === fallback locale ===
+
+  @Test
+  @DisplayName("null locale → DEFAULT_LOCALE (RU) fallback")
+  void nullLocaleFallsBackToRu() {
+    RenderedMessage msg = renderer.render(
+        "draft_submitted", ChannelKind.EMAIL, null,
+        "Космические аппараты", "Союз-МС-25", "user@nstart.space",
+        "UPDATE", "https://ordinis.example", 123L);
+
+    assertTrue(msg.subject().startsWith("[НСИ]"),
+        "Null locale → RU bundle, subject должен быть RU");
+  }
+}
@@ -31,6 +31,7 @@
    <module>ordinis-projection-writer</module>
    <module>ordinis-cuod-bundle</module>
    <module>ordinis-migrations</module>
+    <module>ordinis-notifications</module>
  </modules>

  <!--
@@ -113,6 +114,11 @@
        <artifactId>ordinis-migrations</artifactId>
        <version>${project.version}</version>
      </dependency>
+      <dependency>
+        <groupId>cloud.nstart.terravault.ordinis</groupId>
+        <artifactId>ordinis-notifications</artifactId>
+        <version>${project.version}</version>
+      </dependency>

      <!-- External -->
      <dependency>
				`@@ -0,0 +1 @@`
				`cloud.nstart.terravault.ordinis.notifications.config.NotificationsAutoConfiguration`