refactor: replace skill code with skill ID across the application

- Updated skill handling to use skill IDs instead of skill codes in various components, services, and models.
- Modified tests to reflect changes in skill identification.
- Removed references to skill codes in favor of skill IDs for consistency and clarity.
- Updated localization files to remove skill code references and adjust error messages accordingly.

internal/ai/skills/matcher.go

@@ -2,13 +2,10 @@ package skills
 
 import (
 	"context"
-	"strings"
 
 	"agent-desk/internal/models"
 	"agent-desk/internal/pkg/enums"
 	"agent-desk/internal/pkg/errorsx"
-
-	"github.com/mlogclub/simple/common/strs"
 )
 
 type intentTriggerConfig struct {
@@ -18,45 +15,34 @@ type intentTriggerConfig struct {
 // MatchSkill 对单个 SkillDefinition 执行命中判断。
 func MatchSkill(execCtx context.Context, ctx RuntimeContext) (*models.SkillDefinition, string, *RouteTrace, error) {
 	loader := newCandidateLoader()
-	if strs.IsNotBlank(ctx.ManualSkillCode) {
-		skill := loader.findManualSkillDefinition(ctx.ManualSkillCode)
+	if ctx.ManualSkillDefinitionID > 0 {
+		skill := loader.findManualSkillDefinition(ctx.ManualSkillDefinitionID)
 		if skill == nil || skill.Status != enums.StatusOk {
 			return nil, "", nil, errorsx.InvalidParamI18n("error.e0054")
 		}
-		return skill, "manual_skill_code", &RouteTrace{
-			Status:            "manual_selected",
-			SelectedSkillCode: skill.Code,
+		return skill, "manual_skill_id", &RouteTrace{
+			Status:          "manual_selected",
+			SelectedSkillID: skill.ID,
 		}, nil
 	}
 
 	candidates := loader.loadCandidateSkills(ctx.AIAgent)
 	trace := &RouteTrace{
-		Status:              "started",
-		CandidateSkillCodes: make([]string, 0, len(candidates)),
+		Status:            "started",
+		CandidateSkillIDs: make([]int64, 0, len(candidates)),
 	}
 	for _, item := range candidates {
-		trace.CandidateSkillCodes = append(trace.CandidateSkillCodes, item.Code)
+		trace.CandidateSkillIDs = append(trace.CandidateSkillIDs, item.ID)
 	}
 	if len(candidates) == 0 {
 		trace.Status = "no_candidate"
 		return nil, "no_enabled_skill_bound", trace, nil
 	}
 
-	intentCode := strings.TrimSpace(ctx.IntentCode)
-	if intentCode != "" {
-		for _, item := range candidates {
-			if strings.EqualFold(strings.TrimSpace(item.Code), intentCode) {
-				trace.Status = "intent_selected"
-				trace.SelectedSkillCode = item.Code
-				return &item, "intent_code", trace, nil
-			}
-		}
-	}
-
 	selected, routeTrace, err := routeSkillWithLLM(execCtx, ctx, candidates)
 	if routeTrace != nil {
 		trace.Status = routeTrace.Status
-		trace.SelectedSkillCode = routeTrace.SelectedSkillCode
+		trace.SelectedSkillID = routeTrace.SelectedSkillID
 		trace.RawDecision = routeTrace.RawDecision
 		trace.LatencyMs = routeTrace.LatencyMs
 		trace.Error = routeTrace.Error