fix: improve search to prioritize path-based matching

When searching for option paths like "services.nginx", use name-based
LIKE matching instead of full-text search. This ensures the results
are options that start with the query, not random options that mention
the term somewhere in their description.

- Path queries (containing dots): use LIKE for name prefix matching
- Text queries (no dots): use FTS for full-text search on name+description

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

internal/database/postgres.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"database/sql"
 	"fmt"
+	"strings"
 
 	_ "github.com/lib/pq"
 )
@@ -297,15 +298,29 @@ func (s *PostgresStore) GetChildren(ctx context.Context, revisionID int64, paren
 
 // SearchOptions searches for options matching a query.
 func (s *PostgresStore) SearchOptions(ctx context.Context, revisionID int64, query string, filters SearchFilters) ([]*Option, error) {
-	// Use PostgreSQL full-text search
-	baseQuery := `
-		SELECT id, revision_id, name, parent_path, type, default_value, example, description, read_only
-		FROM options
-		WHERE revision_id = $1
-		AND to_tsvector('english', name || ' ' || COALESCE(description, '')) @@ plainto_tsquery('english', $2)`
+	var baseQuery string
+	var args []interface{}
+	argNum := 1
 
-	args := []interface{}{revisionID, query}
-	argNum := 3
+	// If the query looks like an option path (contains dots), prioritize name-based matching.
+	if strings.Contains(query, ".") {
+		baseQuery = `
+			SELECT id, revision_id, name, parent_path, type, default_value, example, description, read_only
+			FROM options
+			WHERE revision_id = $1
+			AND (name = $2 OR name LIKE $3)`
+		args = []interface{}{revisionID, query, query + ".%"}
+		argNum = 4
+	} else {
+		// For non-path queries, use PostgreSQL full-text search
+		baseQuery = `
+			SELECT id, revision_id, name, parent_path, type, default_value, example, description, read_only
+			FROM options
+			WHERE revision_id = $1
+			AND to_tsvector('english', name || ' ' || COALESCE(description, '')) @@ plainto_tsquery('english', $2)`
+		args = []interface{}{revisionID, query}
+		argNum = 3
+	}
 
 	if filters.Type != "" {
 		baseQuery += fmt.Sprintf(" AND type = $%d", argNum)