Add multi-depository support with global config

- Implement global CLI config at ~/.config/jade/config.yml
- Add jade depo commands (add, list, remove, set-default)
- Support depository short names and context-aware detection
- Remove tag_prefix config, hardcode + syntax for consistency
- Update depository resolution: flag -> context -> default
- Auto-initialize .jade/ directory structure when adding depos
- Update documentation with new multi-depository workflow

jade-depo/internal/engine/search.go

@@ -5,7 +5,6 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
-	"regexp"
 	"strings"
 )
 
@@ -52,18 +51,6 @@ func (jd *JadeDepo) SearchContent(query string) ([]string, error) {
 	return results, nil
 }
 
-// SearchByTag searches for notes containing a specific tag
-func (jd *JadeDepo) SearchByTag(tag string) ([]string, error) {
-	// Ensure tag has prefix
-	if !strings.HasPrefix(tag, jd.Config.TagPrefix) {
-		tag = jd.Config.TagPrefix + tag
-	}
-
-	// Use ripgrep to find the tag (escape special regex characters)
-	escapedTag := regexp.QuoteMeta(tag)
-	return jd.SearchContent(escapedTag)
-}
-
 // ListAllNotes returns all markdown notes in the depository
 func (jd *JadeDepo) ListAllNotes() ([]*Note, error) {
 	var notes []*Note
@@ -85,7 +72,7 @@ func (jd *JadeDepo) ListAllNotes() ([]*Note, error) {
 				return err
 			}
 
-			note, err := LoadNote(jd.Config.DepoPath, relPath, jd.Config.TagPrefix)
+			note, err := LoadNote(jd.Config.DepoPath, relPath)
 			if err != nil {
 				// Log error but continue
 				fmt.Fprintf(os.Stderr, "Warning: failed to load note %s: %v\n", relPath, err)