Initial commit: Visigine (Vite client + Express/SQLite backend)

Container-ready via docker/ compose (frontend nginx + backend Node). Compose adjusted for Coolify on the prod server: frontend uses expose:80 (no host binding — host 8080 is taken by the Coolify proxy; Traefik routes visigine.de), backend ALLOWED_ORIGINS=https://visigine.de. Secrets stay in server/.env (git-ignored); see server/.env.example.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

server/db/schema.sql

@@ -0,0 +1,44 @@
+-- Brand we monitor. One row per tracked brand.
+CREATE TABLE IF NOT EXISTS clients (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  hostname TEXT NOT NULL UNIQUE,
+  url TEXT NOT NULL,
+  name TEXT NOT NULL,
+  description TEXT,
+  brand_aliases TEXT NOT NULL DEFAULT '[]',
+  language TEXT NOT NULL DEFAULT 'de',
+  status TEXT NOT NULL DEFAULT 'active' CHECK (status IN ('active','paused','archived')),
+  created_at TEXT NOT NULL DEFAULT (datetime('now')),
+  last_run_at TEXT
+);
+
+-- Search queries that simulate potential customer questions.
+-- Each active query is sent to every available provider on every run.
+CREATE TABLE IF NOT EXISTS queries (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  client_id INTEGER NOT NULL REFERENCES clients(id) ON DELETE CASCADE,
+  text TEXT NOT NULL,
+  active INTEGER NOT NULL DEFAULT 1 CHECK (active IN (0,1)),
+  created_at TEXT NOT NULL DEFAULT (datetime('now'))
+);
+
+-- One row per (client, query, provider, ran_at). Stores the full LLM
+-- response for review plus the mention detection result.
+CREATE TABLE IF NOT EXISTS runs (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  client_id INTEGER NOT NULL REFERENCES clients(id) ON DELETE CASCADE,
+  query_id INTEGER NOT NULL REFERENCES queries(id) ON DELETE CASCADE,
+  provider TEXT NOT NULL,
+  ran_at TEXT NOT NULL DEFAULT (datetime('now')),
+  mentioned INTEGER NOT NULL DEFAULT 0 CHECK (mentioned IN (0,1)),
+  position INTEGER,
+  snippet TEXT,
+  response_full TEXT,
+  ms INTEGER NOT NULL DEFAULT 0,
+  cost_usd REAL NOT NULL DEFAULT 0,
+  error TEXT
+);
+
+CREATE INDEX IF NOT EXISTS idx_runs_client_ran ON runs(client_id, ran_at DESC);
+CREATE INDEX IF NOT EXISTS idx_runs_query ON runs(query_id);
+CREATE INDEX IF NOT EXISTS idx_queries_client ON queries(client_id);