chore: housekeeping and refactoring (bump to 4.7.1)

- Remove unused parameters, dead files, and inaccurate doc.go files
- Extract shared helpers, eliminate duplication
- Rename cheatpath.Cheatpath to cheatpath.Path
- Optimize filesystem walks (WalkDir, skip .git)
- Move sheet name validation to sheet.Validate
- Move integration tests to test/integration/
- Consolidate internal/mock into mocks/
- Move fuzz.sh to test/
- Inline loadSheets helper into command callers
- Extract config.New into its own file
- Fix stale references in HACKING.md and CLAUDE.md
- Restore plan9 build target
- Remove redundant and low-value tests
- Clean up project documentation

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

internal/installer/prompt_test.go

@@ -2,7 +2,6 @@ package installer
 
 import (
 	"bytes"
-	"fmt"
 	"io"
 	"os"
 	"strings"
@@ -158,23 +157,3 @@ func TestPromptError(t *testing.T) {
 		t.Errorf("expected 'failed to prompt' error, got: %v", err)
 	}
 }
-
-// TestPromptIntegration provides a simple integration test
-func TestPromptIntegration(t *testing.T) {
-	// This demonstrates how the prompt would be used in practice
-	// It's skipped by default since it requires actual user input
-	if os.Getenv("TEST_INTERACTIVE") != "1" {
-		t.Skip("Skipping interactive test - set TEST_INTERACTIVE=1 to run")
-	}
-
-	fmt.Println("\n=== Interactive Prompt Test ===")
-	fmt.Println("You will be prompted to answer a question.")
-	fmt.Println("Try different inputs: y, n, Y, N, empty (just press Enter)")
-
-	result, err := Prompt("Would you like to continue? [Y/n]", true)
-	if err != nil {
-		t.Fatalf("Prompt failed: %v", err)
-	}
-
-	fmt.Printf("You answered: %v\n", result)
-}

internal/installer/run.go

@@ -3,8 +3,6 @@ package installer
 import (
 	"fmt"
 	"os"
-	"path/filepath"
-	"strings"
 
 	"github.com/cheat/cheat/internal/config"
 	"github.com/cheat/cheat/internal/repo"
@@ -13,27 +11,11 @@ import (
 // Run runs the installer
 func Run(configs string, confpath string) error {
 
-	// determine the appropriate paths for config data and (optional) community
-	// cheatsheets based on the user's platform
-	confdir := filepath.Dir(confpath)
+	// expand template placeholders with platform-appropriate paths
+	configs = ExpandTemplate(configs, confpath)
 
-	// create paths for community, personal, and work cheatsheets
-	community := filepath.Join(confdir, "cheatsheets", "community")
-	personal := filepath.Join(confdir, "cheatsheets", "personal")
-	work := filepath.Join(confdir, "cheatsheets", "work")
-
-	// set default cheatpaths
-	configs = strings.Replace(configs, "COMMUNITY_PATH", community, -1)
-	configs = strings.Replace(configs, "PERSONAL_PATH", personal, -1)
-	configs = strings.Replace(configs, "WORK_PATH", work, -1)
-
-	// locate and set a default pager
-	configs = strings.Replace(configs, "PAGER_PATH", config.Pager(), -1)
-
-	// locate and set a default editor
-	if editor, err := config.Editor(); err == nil {
-		configs = strings.Replace(configs, "EDITOR_PATH", editor, -1)
-	}
+	// determine cheatsheet directory paths
+	community, personal, work := cheatsheetDirs(confpath)
 
 	// prompt the user to download the community cheatsheets
 	yes, err := Prompt(
@@ -51,19 +33,7 @@ func Run(configs string, confpath string) error {
 			return fmt.Errorf("failed to clone cheatsheets: %v", err)
 		}
 	} else {
-		// comment out the community cheatpath in the config since
-		// the directory won't exist
-		configs = strings.Replace(configs,
-			"  - name: community\n"+
-				"    path: "+community+"\n"+
-				"    tags: [ community ]\n"+
-				"    readonly: true",
-			"  #- name: community\n"+
-				"  #  path: "+community+"\n"+
-				"  #  tags: [ community ]\n"+
-				"  #  readonly: true",
-			-1,
-		)
+		configs = CommentCommunity(configs, confpath)
 	}
 
 	// always create personal and work directories

internal/installer/run_test.go

@@ -1,7 +1,6 @@
 package installer
 
 import (
-	"fmt"
 	"io"
 	"os"
 	"path/filepath"
@@ -245,10 +244,10 @@ cheatpaths:
 	if strings.Contains(contentStr, "PERSONAL_PATH") {
 		t.Error("PERSONAL_PATH was not replaced")
 	}
-	if strings.Contains(contentStr, "EDITOR_PATH") && !strings.Contains(contentStr, fmt.Sprintf("editor: %s", "")) {
+	if strings.Contains(contentStr, "EDITOR_PATH") {
 		t.Error("EDITOR_PATH was not replaced")
 	}
-	if strings.Contains(contentStr, "PAGER_PATH") && !strings.Contains(contentStr, fmt.Sprintf("pager: %s", "")) {
+	if strings.Contains(contentStr, "PAGER_PATH") {
 		t.Error("PAGER_PATH was not replaced")
 	}
 	if strings.Contains(contentStr, "WORK_PATH") {

internal/installer/template.go

@@ -0,0 +1,58 @@
+package installer
+
+import (
+	"path/filepath"
+	"strings"
+
+	"github.com/cheat/cheat/internal/config"
+)
+
+// cheatsheetDirs returns the community, personal, and work cheatsheet
+// directory paths derived from a config file path.
+func cheatsheetDirs(confpath string) (community, personal, work string) {
+	confdir := filepath.Dir(confpath)
+	community = filepath.Join(confdir, "cheatsheets", "community")
+	personal = filepath.Join(confdir, "cheatsheets", "personal")
+	work = filepath.Join(confdir, "cheatsheets", "work")
+	return
+}
+
+// ExpandTemplate replaces placeholder tokens in the config template with
+// platform-appropriate paths derived from confpath.
+func ExpandTemplate(configs string, confpath string) string {
+	community, personal, work := cheatsheetDirs(confpath)
+
+	// substitute paths
+	configs = strings.ReplaceAll(configs, "COMMUNITY_PATH", community)
+	configs = strings.ReplaceAll(configs, "PERSONAL_PATH", personal)
+	configs = strings.ReplaceAll(configs, "WORK_PATH", work)
+
+	// locate and set a default pager
+	configs = strings.ReplaceAll(configs, "PAGER_PATH", config.Pager())
+
+	// locate and set a default editor
+	if editor, err := config.Editor(); err == nil {
+		configs = strings.ReplaceAll(configs, "EDITOR_PATH", editor)
+	}
+
+	return configs
+}
+
+// CommentCommunity comments out the community cheatpath block in the config
+// template. This is used when the community cheatsheets directory won't exist
+// (either because the user declined to download them, or because the config
+// is being output as an example).
+func CommentCommunity(configs string, confpath string) string {
+	community, _, _ := cheatsheetDirs(confpath)
+
+	return strings.ReplaceAll(configs,
+		"  - name: community\n"+
+			"    path: "+community+"\n"+
+			"    tags: [ community ]\n"+
+			"    readonly: true",
+		"  #- name: community\n"+
+			"  #  path: "+community+"\n"+
+			"  #  tags: [ community ]\n"+
+			"  #  readonly: true",
+	)
+}