phase-9: domain-driven architecture complete

- Restructured server layer with 5 domains: shared, screener, portfolio, calls, finance
- Migrated 58 TypeScript files to domain-driven structure
- Updated CLAUDE.md with new architecture documentation
- Added .gitignore rules for .md files (except CLAUDE.md)
- Removed unused CatalystAnalyst import from app.ts
- Fixed lint errors: removed unused imports, fixed regex escape, added console suppressions
- Verified no sensitive data in git history
- Server code compiles cleanly with TypeScript strict mode

server/domains/shared/config/constants.ts

@@ -0,0 +1,97 @@
+import type { Signal, AssetType, RateRegime } from '../types';
+
+export const SIGNAL = {
+  STRONG_BUY: '✅ Strong Buy' as Signal,
+  MOMENTUM: '⚡ Momentum' as Signal,
+  SPECULATION: '⚠️  Speculation' as Signal,
+  NEUTRAL: '🔄 Neutral' as Signal,
+  AVOID: '❌ Avoid' as Signal,
+};
+
+export const ASSET_TYPE = {
+  STOCK: 'STOCK' as AssetType,
+  ETF: 'ETF' as AssetType,
+  BOND: 'BOND' as AssetType,
+  CRYPTO: 'crypto',
+};
+
+// ── Why some constants use `as const` and others don't ────────────────────
+//
+// SIGNAL / ASSET_TYPE / REGIME — each member is individually cast to its
+// named type (e.g. `'✅ Strong Buy' as Signal`).  TypeScript already knows
+// the exact literal type of each value, so `as const` on the object would
+// be redundant.
+//
+// SECTOR / SCORE_MODE / CAP_CATEGORY / GROWTH_CATEGORY — these use
+// `as const` because their public type aliases are *derived* from the
+// object itself via `(typeof X)[keyof typeof X]`.  Without `as const`,
+// TypeScript widens every value to `string`, and the derived union
+// collapses to `string` instead of `'TECHNOLOGY' | 'REIT' | ...`.
+// ──────────────────────────────────────────────────────────────────────────
+
+export const SECTOR = {
+  TECHNOLOGY: 'TECHNOLOGY',
+  REIT: 'REIT',
+  FINANCIAL: 'FINANCIAL',
+  ENERGY: 'ENERGY',
+  HEALTHCARE: 'HEALTHCARE',
+  COMMUNICATION: 'COMMUNICATION',
+  CONSUMER_STAPLES: 'CONSUMER_STAPLES',
+  CONSUMER_DISCRETIONARY: 'CONSUMER_DISCRETIONARY',
+  GENERAL: 'GENERAL',
+} as const;
+
+export type Sector = (typeof SECTOR)[keyof typeof SECTOR];
+
+export const SCORE_MODE = {
+  FUNDAMENTAL: 'FUNDAMENTAL',
+  INFLATED: 'INFLATED',
+} as const;
+
+export const REGIME = {
+  LOW: 'LOW' as RateRegime,
+  NORMAL: 'NORMAL' as RateRegime,
+  HIGH: 'HIGH' as RateRegime,
+};
+
+export const YAHOO_MODULES: string[] = [
+  'assetProfile',
+  'financialData',
+  'defaultKeyStatistics',
+  'price',
+  'summaryDetail',
+];
+
+export const SIGNAL_ORDER: Record<string, number> = {
+  [SIGNAL.STRONG_BUY]: 0,
+  [SIGNAL.MOMENTUM]: 1,
+  [SIGNAL.NEUTRAL]: 2,
+  [SIGNAL.SPECULATION]: 3,
+  [SIGNAL.AVOID]: 4,
+};
+
+// ── Market capitalisation tiers ───────────────────────────────────────────
+// Thresholds follow institutional convention (MSCI/Russell definitions).
+export const CAP_CATEGORY = {
+  MEGA: 'Mega Cap', // > $200B
+  LARGE: 'Large Cap', // $10B – $200B
+  MID: 'Mid Cap', // $2B – $10B
+  SMALL: 'Small Cap', // $300M – $2B
+  MICRO: 'Micro Cap', // < $300M
+} as const;
+
+export type CapCategory = (typeof CAP_CATEGORY)[keyof typeof CAP_CATEGORY];
+
+// ── Growth / style classification ─────────────────────────────────────────
+// Derived from revenue growth, earnings growth, and dividend yield.
+// Used for display and to contextualise signals within each cap tier.
+export const GROWTH_CATEGORY = {
+  HIGH_GROWTH: 'High Growth', // rev >15% or earnings >20%
+  MODERATE_GROWTH: 'Growth', // rev 5–15%
+  STABLE: 'Stable', // low growth, modest or no dividend
+  VALUE: 'Value', // low growth + dividend yield ≥ 3%
+  TURNAROUND: 'Turnaround', // negative earnings, positive revenue
+  DECLINING: 'Declining', // negative revenue growth
+} as const;
+
+export type GrowthCategory = (typeof GROWTH_CATEGORY)[keyof typeof GROWTH_CATEGORY];