PR-001: Domain Model v1.0 — compile-only, zero dependencies

- @landvex/domain package with TypeScript strict mode
- 3 Aggregate Roots: FieldSession, Mission, DecisionCase
- Branded IDs, Value Objects, Domain Events, Invariants
- 19 unit tests for IDs, FieldSession, DecisionCase
- Zero runtime dependencies (only TypeScript + jest for tests)
- Separates Entity / Value Object / Aggregate Root
- README documents Three Rules of the domain

Definition of Done met:
- Compiles without errors
- Exports all domain types
- Unit tests for invariants and value objects
- No PostgreSQL, S3, Express, AI models, queues

packages/domain/src/common/value-objects.ts

@@ -0,0 +1,104 @@
+/**
+ * Value Objects - immutable, compared by value, not identity
+ */
+
+export interface GeoLocation {
+  readonly lat: number;
+  readonly lng: number;
+  readonly accuracy?: number; // meters
+}
+
+export interface BoundingBox {
+  readonly x: number;
+  readonly y: number;
+  readonly width: number;
+  readonly height: number;
+}
+
+export interface Confidence {
+  readonly value: number; // 0.0 to 1.0
+}
+
+export interface Hash {
+  readonly algorithm: 'sha256';
+  readonly value: string;
+}
+
+export interface StorageUri {
+  readonly protocol: 's3' | 'r2' | 'file';
+  readonly bucket?: string;
+  readonly path: string;
+}
+
+export interface Version {
+  readonly major: number;
+  readonly minor: number;
+  readonly patch: number;
+}
+
+export interface TimeRange {
+  readonly start: Date;
+  readonly end: Date;
+}
+
+export interface DeviceInfo {
+  readonly model: string;
+  readonly os: string;
+  readonly appVersion: string;
+}
+
+export interface ExifData {
+  readonly device?: string;
+  readonly iso?: number;
+  readonly exposure?: string;
+  readonly focalLength?: string;
+  readonly timestamp?: Date;
+}
+
+export interface AssetMetadata {
+  readonly exif: ExifData;
+  readonly gps: GeoLocation;
+  readonly device: DeviceInfo;
+}
+
+export interface BusinessImpact {
+  readonly risk: string;
+  readonly cost: string;
+  readonly time: string;
+  readonly opportunity: string;
+}
+
+export interface EvidenceContext {
+  readonly historicalData?: boolean;
+  readonly weatherData?: boolean;
+  readonly trafficData?: boolean;
+  readonly gisData?: boolean;
+}
+
+export interface QualityIssue {
+  readonly type: 'blur' | 'duplicate' | 'bad_gps' | 'low_resolution' | 'missing_metadata' | 'wrong_timestamp' | 'occlusion';
+  readonly severity: Severity;
+  readonly description: string;
+}
+
+export interface ValidationResult {
+  readonly valid: boolean;
+  readonly issues: QualityIssue[];
+}
+
+export type Severity = 'low' | 'medium' | 'high' | 'critical';
+export type Priority = 'low' | 'medium' | 'high' | 'urgent';
+
+export const Severity = {
+  LOW: 'low' as Severity,
+  MEDIUM: 'medium' as Severity,
+  HIGH: 'high' as Severity,
+  CRITICAL: 'critical' as Severity
+};
+
+export const Priority = {
+  LOW: 'low' as Priority,
+  MEDIUM: 'medium' as Priority,
+  HIGH: 'high' as Priority,
+  URGENT: 'urgent' as Priority
+};