Route templates: a route named x-* serves any request route x-<something>

Implemented-By: OpenCode session (model recorded in docs/implementer-log.md)

internal/config/route.go

@@ -0,0 +1,40 @@
+package config
+
+import (
+	"regexp"
+	"strings"
+)
+
+// templateName matches a route template: a valid route name ending in "-*".
+var templateName = regexp.MustCompile(`^[a-z0-9][a-z0-9-]*-\*$`)
+
+// Route resolves a request route name: an exact entry wins; else the longest template
+// "<prefix>-*" whose prefix (including the dash) starts name with a non-empty remainder;
+// else ok is false. key is the config key that matched (the template's name for a template).
+// A name that is not a valid route name (the pattern below) or contains '*' never matches.
+func (c *Config) Route(name string) (r Route, key string, ok bool) {
+	if !routeName.MatchString(name) {
+		return Route{}, "", false
+	}
+	if rt, found := c.Routes[name]; found {
+		return rt, name, true
+	}
+	var (
+		best    Route
+		bestKey string
+		bestLen int
+	)
+	for tmpl, rt := range c.Routes {
+		if !templateName.MatchString(tmpl) {
+			continue
+		}
+		prefix := tmpl[:len(tmpl)-1] // drop the trailing '*', keeping the dash
+		if len(prefix) > bestLen && strings.HasPrefix(name, prefix) && len(name) > len(prefix) {
+			best, bestKey, bestLen = rt, tmpl, len(prefix)
+		}
+	}
+	if bestKey == "" {
+		return Route{}, "", false
+	}
+	return best, bestKey, true
+}