test(tools): add unit tests for error handling functions

* Implement tests for error functions like errRequiredField, errInvalidField, and errEntityNotFound.
* Ensure proper metadata is returned for various error scenarios.
* Validate error handling in CRM, Files, and other tools.
* Introduce tests for parsing stored file IDs and UUIDs.
* Enhance coverage for helper functions related to project resolution and session management.

internal/config/loader.go

@@ -7,6 +7,7 @@ import (
 	"strings"
 	"time"
 
+	"git.warky.dev/wdevs/amcs/internal/buildinfo"
 	"gopkg.in/yaml.v3"
 )
 
@@ -46,6 +47,7 @@ func ResolvePath(explicitPath string) string {
 }
 
 func defaultConfig() Config {
+	info := buildinfo.Current()
 	return Config{
 		Server: ServerConfig{
 			Host:         "0.0.0.0",
@@ -55,10 +57,11 @@ func defaultConfig() Config {
 			IdleTimeout:  60 * time.Second,
 		},
 		MCP: MCPConfig{
-			Path:       "/mcp",
-			ServerName: "amcs",
-			Version:    "0.1.0",
-			Transport:  "streamable_http",
+			Path:           "/mcp",
+			ServerName:     "amcs",
+			Version:        info.Version,
+			Transport:      "streamable_http",
+			SessionTimeout: 10 * time.Minute,
 		},
 		Auth: AuthConfig{
 			HeaderName: "x-brain-key",