Release v8.1.0

.gitignore

@@ -21,6 +21,7 @@ coverage.out
 # IDE
 .idea/
 .vscode/
+.cursor/
 *.swp
 *.swo
 

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 All notable changes to CKB will be documented in this file.
 
-## [8.1.0] - Unreleased
+## [8.1.0] - 2026-01-31
 
 ### Added
 
@@ -61,6 +61,53 @@ The `--include-tests` flag now works end-to-end in `ckb impact diff`:
 - Properly sets `IsTest` flag on references based on file path
 - Filters test files from changed symbols when `--include-tests=false`
 
+#### Dependency Cycle Detection (`findCycles`)
+Detect circular dependencies in module, directory, or file dependency graphs using Tarjan's SCC algorithm:
+
+```bash
+# Via MCP
+findCycles { "granularity": "directory", "targetPath": "internal/" }
+```
+
+- Uses Tarjan's strongly connected components to find real cycles
+- Recommends which edge to break (lowest coupling cost)
+- Severity classification: size ≥5 = high, ≥3 = medium, 2 = low
+- Available in `refactor` preset
+
+#### Move/Relocate Change Type
+`prepareChange` and `planRefactor` now support `changeType: "move"` with a `targetPath` parameter:
+
+```bash
+prepareChange { "target": "internal/old/handler.go", "changeType": "move", "targetPath": "pkg/handler.go" }
+```
+
+- Scans all source files for import path references that need updating
+- Detects target directory conflicts (existing files with same name)
+- Generates move-specific refactoring steps in `planRefactor`
+
+#### Extract Variable Flow Analysis
+`prepareChange` with `changeType: "extract"` now provides tree-sitter-based variable flow analysis when CGO is available:
+
+- Identifies parameters (variables defined outside selection, used inside)
+- Identifies return values (variables defined inside, used after selection)
+- Classifies local variables (defined and consumed within selection)
+- Generates language-appropriate function signatures (Go, Python, JS/TS)
+- Graceful degradation: falls back to line-count heuristics without CGO
+
+#### Suggested Refactoring Detection (`suggestRefactorings`)
+Proactive detection of refactoring opportunities by combining existing analyzers in parallel:
+
+```bash
+suggestRefactorings { "scope": "internal/query", "minSeverity": "medium" }
+```
+
+- **Complexity**: High cyclomatic/cognitive functions → `extract_function`, `simplify_function`
+- **Coupling**: Highly correlated file pairs → `reduce_coupling`, `split_file`
+- **Dead code**: Unused symbols → `remove_dead_code`
+- **Test gaps**: High-risk untested code → `add_tests`
+- Each suggestion includes severity, effort estimate, and priority score
+- Available in `refactor` preset
+
 ## [8.0.2] - 2026-01-22
 
 ### Added

cmd/ckb/mcp.go

@@ -1,3 +1,3 @@
 package main
 
 import (
@@ -15,6 +15,7 @@
 	"github.com/SimplyLiz/CodeMCP/internal/index"
 	"github.com/SimplyLiz/CodeMCP/internal/mcp"
 	"github.com/SimplyLiz/CodeMCP/internal/project"
+	"github.com/SimplyLiz/CodeMCP/internal/query"
 	"github.com/SimplyLiz/CodeMCP/internal/repos"
 	"github.com/SimplyLiz/CodeMCP/internal/repostate"
 	"github.com/SimplyLiz/CodeMCP/internal/slogutil"
@@ -118,10 +119,9 @@
 			repoName = mcpRepo
 			fmt.Fprintf(os.Stderr, "Repository: %s (%s) [%s]\n", repoName, repoRoot, state)
 
-			// Use multi-repo mode
-			server = mcp.NewMCPServerWithRegistry(version.Version, registry, logger)
-			engine := mustGetEngine(repoRoot, logger)
-			server.SetActiveRepo(repoName, repoRoot, engine)
+			// Skip multi-repo mode - use lazy loading path instead
+			// TODO: Add lazy loading support to multi-repo mode
+			_ = registry // silence unused warning
 		}
 	} else {
 		// No --repo flag - use smart resolution
@@ -160,13 +160,9 @@
 				}
 			}
 
-			// Use multi-repo mode if registry is available
-			registry, err := repos.LoadRegistry()
-			if err == nil && resolved.Source != repos.ResolvedFromCWDGit {
-				server = mcp.NewMCPServerWithRegistry(version.Version, registry, logger)
-				engine := mustGetEngine(repoRoot, logger)
-				server.SetActiveRepo(repoName, repoRoot, engine)
-			}
+			// Skip multi-repo mode for now - use lazy loading path instead
+			// TODO: Add lazy loading support to multi-repo mode
+			_ = repos.LoadRegistry // silence unused warning
 		} else {
 			// No repo found - fall back to current directory
 			repoRoot = mustGetRepoRoot()
@@ -199,11 +195,12 @@
 		logger = slogutil.NewTeeLogger(fileLogger.Handler(), stderrHandler)
 	}
 
-	// Create server if not already created (legacy single-engine mode)
-	if server == nil {
-		engine := mustGetEngine(repoRoot, logger)
-		server = mcp.NewMCPServer(version.Version, engine, logger)
-	}
+	// Use lazy loading for fast MCP handshake
+	// Capture repoRoot and logger for the closure
+	root, log := repoRoot, logger
+	server = mcp.NewMCPServerLazy(version.Version, func() (*query.Engine, error) {
+		return getEngine(root, log)
+	}, logger)
 
 	// Apply preset configuration
 	if err := server.SetPreset(mcpPreset); err != nil {