feat: Sentinela v0.2.0 — Brazilian Financial Data API in Go

- 20 Go source files, single 16MB binary
- SQLite + FTS5 full-text search (pure Go, no CGO)
- BCB integration: Selic, CDI, IPCA, USD/BRL, EUR/BRL
- CVM integration: 2,524 companies from registry
- Fiber v2 REST API with 42 handlers
- Auto-seeds on first run (~5s for BCB + CVM)
- Token bucket rate limiter, optional API key auth
- Periodic sync scheduler (configurable)
- Graceful shutdown, structured logging (slog)
- All endpoints tested with real data

internal/db/schema.go

@@ -0,0 +1,73 @@
+package db
+
+const schema = `
+CREATE TABLE IF NOT EXISTS companies (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    ticker TEXT,
+    name TEXT NOT NULL,
+    cnpj TEXT UNIQUE NOT NULL,
+    cvm_code TEXT,
+    sector TEXT,
+    status TEXT NOT NULL DEFAULT 'ATIVO',
+    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS filings (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    external_id TEXT UNIQUE NOT NULL,
+    company_id INTEGER REFERENCES companies(id),
+    cnpj TEXT NOT NULL,
+    category TEXT NOT NULL,
+    type TEXT,
+    species TEXT,
+    subject TEXT,
+    reference_date TEXT,
+    delivery_date DATETIME NOT NULL,
+    protocol TEXT,
+    version TEXT,
+    download_url TEXT,
+    importance INTEGER DEFAULT 1,
+    created_at DATETIME DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS selic_history (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    date TEXT UNIQUE NOT NULL,
+    daily_rate REAL NOT NULL,
+    annual_rate REAL,
+    target_rate REAL
+);
+
+CREATE TABLE IF NOT EXISTS cdi_history (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    date TEXT UNIQUE NOT NULL,
+    daily_rate REAL NOT NULL,
+    annual_rate REAL
+);
+
+CREATE TABLE IF NOT EXISTS ipca_history (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    date TEXT UNIQUE NOT NULL,
+    monthly_rate REAL NOT NULL,
+    accumulated_12m REAL
+);
+
+CREATE TABLE IF NOT EXISTS fx_rates (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    date TEXT NOT NULL,
+    pair TEXT NOT NULL,
+    rate REAL NOT NULL,
+    UNIQUE(date, pair)
+);
+
+CREATE VIRTUAL TABLE IF NOT EXISTS companies_fts USING fts5(
+    name, ticker, sector, cnpj,
+    content='companies', content_rowid='id'
+);
+
+CREATE VIRTUAL TABLE IF NOT EXISTS filings_fts USING fts5(
+    subject, category, type,
+    content='filings', content_rowid='id'
+);
+`