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/jade.go

@@ -12,8 +12,8 @@ type JadeDepo struct {
 	Config *Config
 }
 
-func Init(cfgPath, depoPath string) (*JadeDepo, error) {
-	cfg, err := initConfig(cfgPath, depoPath)
+func Init(depoInput string) (*JadeDepo, error) {
+	cfg, err := initConfig(depoInput)
 	if err != nil {
 		return nil, fmt.Errorf("failed to initialize config: %w", err)
 	}
@@ -22,7 +22,7 @@ func Init(cfgPath, depoPath string) (*JadeDepo, error) {
 		Config: cfg,
 	}
 
-	// Initialize depository structure
+	// Initialize depository structure (already done in initConfig, but ensure it's complete)
 	if err := jd.initDepoStructure(); err != nil {
 		return nil, fmt.Errorf("failed to initialize depository structure: %w", err)
 	}