fix: normalize prompt file paths in config during bundle apply

When installing prompt files from bundles, the CLI now adjusts file
references in the preset config from ./prompts/ to .opencode/prompts/
to match the target installation location.

This ensures the config works correctly after installation regardless
of the bundle's original path references.

Add test: TestBundleApplyAdjustsPromptFilePaths

Refs: qbicsoftware/opencode-config-bundle#11

Author: sven1103-agent

cmd/bundle.go

@@ -288,6 +288,13 @@ func runBundleInstall(sourceRef string, interactivePreset bool) error {
 		}
 	}
 
+	// Adjust prompt file paths in preset content from ./prompts/ to .opencode/prompts/
+	// The CLI normalizes paths to the target installation location (local project)
+	if bundleInstallAssets && len(bundlePresetEntry.PromptFiles) > 0 {
+		adjustedContent := strings.ReplaceAll(string(presetContent), "./prompts/", ".opencode/prompts/")
+		presetContent = []byte(adjustedContent)
+	}
+
 	// Reuse the shared write semantics so bundle apply matches init/preset overwrite behavior.
 	if err := configpreset.WriteConfig(outputPath, string(presetContent), bundleForce); err != nil {
 		return fmt.Errorf("failed to write config: %w", err)
@@ -303,7 +310,7 @@ func runBundleInstall(sourceRef string, interactivePreset bool) error {
 		}
 		installedAssets = installed
 
-		for _, a := range installed {
+		for _, a := range installedAssets {
 			fmt.Printf("written: %s\n", a.Destination)
 		}
 	}

cmd/bundle_test.go

@@ -104,6 +104,65 @@ func TestBundleApplyMissingPreset(t *testing.T) {
 	}
 }
 
+// TestBundleApplyAdjustsPromptFilePaths tests that CLI adjusts prompt paths
+func TestBundleApplyAdjustsPromptFilePaths(t *testing.T) {
+	restore := saveRegistry(t)
+	defer restore()
+
+	bundleDir := t.TempDir()
+
+	manifest := `{"manifest_version":"1.0.0","bundle_name":"test","bundle_version":"v1.0.0","presets":[{"name":"test","entrypoint":"test.json","description":"Test","prompt_files":["prompts/coder.md"]}]}`
+	os.WriteFile(filepath.Join(bundleDir, "opencode-bundle.manifest.json"), []byte(manifest), 0644)
+
+	preset := `{"agents":{"coder":{"prompt":"{file:./prompts/coder.md}"}}}`
+	os.WriteFile(filepath.Join(bundleDir, "test.json"), []byte(preset), 0644)
+
+	os.MkdirAll(filepath.Join(bundleDir, "prompts"), 0755)
+	os.WriteFile(filepath.Join(bundleDir, "prompts", "coder.md"), []byte("# coder"), 0644)
+
+	reg, _ := source.LoadRegistry()
+	reg.Sources = []source.Source{{ID: "tid", Name: "t", Type: source.SourceTypeLocalDirectory, Location: bundleDir}}
+	source.SaveRegistry(reg)
+
+	origPreset := bundlePreset
+	origAuto := bundleAuto
+	origTTY := bundleInputIsTTY
+	origRoot := bundleProjectRoot
+	origForce := bundleForce
+	origAssets := bundleInstallAssets
+	defer func() {
+		bundlePreset = origPreset
+		bundleAuto = origAuto
+		bundleInputIsTTY = origTTY
+		bundleProjectRoot = origRoot
+		bundleForce = origForce
+		bundleInstallAssets = origAssets
+	}()
+
+	bundlePreset = "test"
+	bundleAuto = true
+	bundleInputIsTTY = func() bool { return false }
+	bundleProjectRoot = t.TempDir()
+	bundleForce = true
+	bundleInstallAssets = true
+
+	err := runBundleInstall("tid", false)
+	if err != nil {
+		t.Fatalf("runBundleInstall() error = %v", err)
+	}
+
+	cfg, _ := os.ReadFile(filepath.Join(bundleProjectRoot, "opencode.json"))
+	if strings.Contains(string(cfg), "./prompts/") {
+		t.Errorf("config should not contain ./prompts/, got: %s", cfg)
+	}
+	if !strings.Contains(string(cfg), ".opencode/prompts/") {
+		t.Errorf("config should contain .opencode/prompts/, got: %s", cfg)
+	}
+	if _, err := os.Stat(filepath.Join(bundleProjectRoot, ".opencode", "prompts", "coder.md")); err != nil {
+		t.Errorf("prompt should be installed to .opencode/prompts/: %v", err)
+	}
+}
+
 // TestBundleStatusNoProvenance tests status command with no provenance
 func TestBundleStatusNoProvenance(t *testing.T) {
 	origProjectRoot := bundleProjectRoot