refactor(db): port auth and security handlers to sqlc (#83)

- auth.sql: user lookups, counts, register/mirror inserts, profile update
- security.sql: access EXISTS, vulnerability list/metrics/status,
  framework list, latest scan/report, project-id guards
- NULL description/service_id rows stay filtered, matching the original
  scan-error-and-skip behavior
- auth_users probe and filtered audit-log queries stay raw: one is a
  Better Auth table outside the schema, the other is dynamically built
- TestSecurityLiveInvariants covers the access predicate, severity
  ordering, upsert conflict path, and latest-row lookups against live
  Postgres

Authored By: TDvorak <[email protected]>

app/backend/sqlc/schema.sql

@@ -529,3 +529,64 @@ CREATE TABLE git_webhooks (
     created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
     updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
 );
+
+CREATE TABLE users (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    email VARCHAR(255) NOT NULL UNIQUE,
+    password_hash VARCHAR(255) NOT NULL,
+    name VARCHAR(255) NOT NULL,
+    avatar_url VARCHAR(500),
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    is_admin BOOLEAN NOT NULL DEFAULT false
+);
+
+CREATE TABLE compliance_frameworks (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    name VARCHAR(100) NOT NULL UNIQUE,
+    description TEXT,
+    version VARCHAR(20) NOT NULL,
+    enabled BOOLEAN NOT NULL DEFAULT true,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE security_scans (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    project_id UUID NOT NULL,
+    service_id UUID,
+    scan_type VARCHAR(50) NOT NULL,
+    status VARCHAR(50) NOT NULL DEFAULT 'running',
+    started_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    completed_at TIMESTAMP WITH TIME ZONE,
+    summary JSONB DEFAULT '{}',
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE compliance_reports (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    project_id UUID NOT NULL,
+    framework_id UUID NOT NULL,
+    assessment_date TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    assessor VARCHAR(255),
+    overall_status VARCHAR(50) NOT NULL,
+    score INTEGER NOT NULL DEFAULT 0,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE vulnerabilities (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    type VARCHAR(50) NOT NULL,
+    severity VARCHAR(20) NOT NULL,
+    title VARCHAR(255) NOT NULL,
+    description TEXT,
+    service_id UUID,
+    project_id UUID NOT NULL,
+    status VARCHAR(50) NOT NULL DEFAULT 'open',
+    found_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    resolved_at TIMESTAMP WITH TIME ZONE,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);