chore: auto-commit (4 archivos)

- integration_test.go
- main.go
- tool_search.go
- tool_proposal.go

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tool_search.go

@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"encoding/json"
+	"strings"
 
 	"github.com/mark3labs/mcp-go/mcp"
 
@@ -15,6 +16,8 @@ type searchArgs struct {
 	Lang   string `json:"lang,omitempty"`
 	Domain string `json:"domain,omitempty"`
 	Purity string `json:"purity,omitempty"`
+	Tag    string `json:"tag,omitempty"`
+	Tags   string `json:"tags,omitempty"`
 	Limit  int    `json:"limit,omitempty"`
 }
 
@@ -52,6 +55,12 @@ func searchTool() mcp.Tool {
 			mcp.Description("Filter by purity (functions only)."),
 			mcp.Enum("pure", "impure"),
 		),
+		mcp.WithString("tag",
+			mcp.Description("Filter by single tag (exact match against tags JSON array). Ej: 'notebook', 'metabase'."),
+		),
+		mcp.WithString("tags",
+			mcp.Description("Filter by multiple tags (CSV). AND across tags: all must be present. Ej: 'metabase,client'."),
+		),
 		mcp.WithNumber("limit",
 			mcp.Description("Max hits returned (default 50)."),
 			mcp.Min(1),
@@ -68,7 +77,9 @@ func (d *deps) handleSearch(ctx context.Context, _ mcp.CallToolRequest, args sea
 
 	q := sanitizeFTS5(args.Query)
 
-	fns, err := d.db.SearchFunctions(q, registry.Kind(args.Kind), registry.Purity(args.Purity), args.Lang, args.Domain)
+	tagFilters := parseTagFilters(args.Tag, args.Tags)
+
+	fns, err := d.db.SearchFunctions(q, registry.Kind(args.Kind), registry.Purity(args.Purity), args.Lang, args.Domain, tagFilters...)
 	if err != nil {
 		return mcp.NewToolResultError("search functions: " + err.Error()), nil
 	}
@@ -93,7 +104,7 @@ func (d *deps) handleSearch(ctx context.Context, _ mcp.CallToolRequest, args sea
 
 	// Types: only when no kind filter (kind applies only to functions).
 	if args.Kind == "" && len(hits) < limit {
-		ts, err := d.db.SearchTypes(q, args.Lang, args.Domain)
+		ts, err := d.db.SearchTypes(q, args.Lang, args.Domain, tagFilters...)
 		if err != nil {
 			return mcp.NewToolResultError("search types: " + err.Error()), nil
 		}
@@ -122,3 +133,22 @@ func (d *deps) handleSearch(ctx context.Context, _ mcp.CallToolRequest, args sea
 	b, _ := json.MarshalIndent(out, "", "  ")
 	return mcp.NewToolResultText(string(b)), nil
 }
+
+// parseTagFilters merges single `tag` and CSV `tags` into a deduplicated slice.
+func parseTagFilters(tag, csv string) []string {
+	seen := map[string]bool{}
+	var out []string
+	add := func(s string) {
+		s = strings.TrimSpace(s)
+		if s == "" || seen[s] {
+			return
+		}
+		seen[s] = true
+		out = append(out, s)
+	}
+	add(tag)
+	for _, t := range strings.Split(csv, ",") {
+		add(t)
+	}
+	return out
+}