feat: modelos y CRUD para unit_tests y e2e_tests

UnitTest en registry con Insert, GetByFunction, Search FTS5, Purge. E2ETest en fn_operations con Insert, Get, List, UpdateResult, Delete. Ambos con scan helpers y serialización JSON.

registry/models.go

@@ -180,6 +180,18 @@ type Proposal struct {
 	UpdatedAt   time.Time      `json:"updated_at"`
 }
 
+// UnitTest represents an individual test case extracted from a test file.
+type UnitTest struct {
+	ID         string    `json:"id"`
+	FunctionID string    `json:"function_id"`
+	Name       string    `json:"name"`
+	Code       string    `json:"code"`
+	FilePath   string    `json:"file_path"`
+	Lang       string    `json:"lang"`
+	CreatedAt  time.Time `json:"created_at"`
+	UpdatedAt  time.Time `json:"updated_at"`
+}
+
 // GenerateID builds the canonical ID: {name}_{lang}_{domain}
 func GenerateID(name, lang, domain string) string {
 	return name + "_" + lang + "_" + domain

registry/store.go

@@ -614,6 +614,91 @@ func scanTypes(rows interface{ Next() bool; Scan(...any) error }) ([]Type, error
 	return result, nil
 }
 
+// --- Unit Tests CRUD ---
+
+// InsertUnitTest inserts or replaces a unit test entry.
+func (db *DB) InsertUnitTest(ut *UnitTest) error {
+	now := time.Now().UTC()
+	if ut.CreatedAt.IsZero() {
+		ut.CreatedAt = now
+	}
+	if ut.UpdatedAt.IsZero() {
+		ut.UpdatedAt = now
+	}
+
+	_, err := db.conn.Exec(`
+		INSERT OR REPLACE INTO unit_tests (
+			id, function_id, name, code, file_path, lang, created_at, updated_at
+		) VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
+		ut.ID, ut.FunctionID, ut.Name, ut.Code, ut.FilePath, ut.Lang,
+		ut.CreatedAt.Format(time.RFC3339), ut.UpdatedAt.Format(time.RFC3339),
+	)
+	return err
+}
+
+// GetUnitTestsByFunction returns all unit tests for a given function ID.
+func (db *DB) GetUnitTestsByFunction(functionID string) ([]UnitTest, error) {
+	rows, err := db.conn.Query(
+		"SELECT id, function_id, name, code, file_path, lang, created_at, updated_at FROM unit_tests WHERE function_id = ? ORDER BY name",
+		functionID,
+	)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	return scanUnitTests(rows)
+}
+
+// SearchUnitTests performs FTS search on unit tests.
+func (db *DB) SearchUnitTests(query string, lang string) ([]UnitTest, error) {
+	where := []string{}
+	args := []any{}
+
+	if query != "" {
+		where = append(where, "ut.id IN (SELECT id FROM unit_tests_fts WHERE unit_tests_fts MATCH ?)")
+		args = append(args, query)
+	}
+	if lang != "" {
+		where = append(where, "ut.lang = ?")
+		args = append(args, lang)
+	}
+
+	sql := "SELECT id, function_id, name, code, file_path, lang, created_at, updated_at FROM unit_tests ut"
+	if len(where) > 0 {
+		sql += " WHERE " + strings.Join(where, " AND ")
+	}
+	sql += " ORDER BY ut.function_id, ut.name"
+
+	rows, err := db.conn.Query(sql, args...)
+	if err != nil {
+		return nil, fmt.Errorf("search unit tests: %w", err)
+	}
+	defer rows.Close()
+	return scanUnitTests(rows)
+}
+
+func scanUnitTests(rows interface{ Next() bool; Scan(...any) error }) ([]UnitTest, error) {
+	var result []UnitTest
+	for rows.Next() {
+		var ut UnitTest
+		var createdAt, updatedAt string
+		err := rows.Scan(&ut.ID, &ut.FunctionID, &ut.Name, &ut.Code, &ut.FilePath, &ut.Lang, &createdAt, &updatedAt)
+		if err != nil {
+			return nil, fmt.Errorf("scanning unit test: %w", err)
+		}
+		ut.CreatedAt, _ = time.Parse(time.RFC3339, createdAt)
+		ut.UpdatedAt, _ = time.Parse(time.RFC3339, updatedAt)
+		result = append(result, ut)
+	}
+	return result, nil
+}
+
+// PurgeUnitTests deletes all unit test entries. Used before re-indexing.
+func (db *DB) PurgeUnitTests() error {
+	_, err := db.conn.Exec("DELETE FROM unit_tests")
+	return err
+}
+
 // --- Proposal CRUD ---
 
 // InsertProposal inserts or replaces a proposal.