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diff --git a/backend/builtin/embed.go b/backend/builtin/embed.go
new file mode 100644
index 000000000..c0d46f80d
--- /dev/null
+++ b/backend/builtin/embed.go
@@ -0,0 +1,11 @@
+package builtin
+
+import "embed"
+
+// FS contains the built-in skill packages shipped with the backend.
+//
+// The Markdown packages live outside internal Go packages so they are easy to
+// review and maintain as product content while remaining embedded in binaries.
+//
+//go:embed *
+var FS embed.FS
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rename from backend/internal/skills/builtin/短剧实战手册/SKILL.md
rename to backend/builtin/短剧实战手册/SKILL.md
diff --git a/backend/internal/skills/builtin/短片五阶段结构/SKILL.md b/backend/builtin/短片五阶段结构/SKILL.md
similarity index 100%
rename from backend/internal/skills/builtin/短片五阶段结构/SKILL.md
rename to backend/builtin/短片五阶段结构/SKILL.md
diff --git a/backend/internal/skills/builtin/社媒素人app宣传/SKILL.md b/backend/builtin/社媒素人app宣传/SKILL.md
similarity index 100%
rename from backend/internal/skills/builtin/社媒素人app宣传/SKILL.md
rename to backend/builtin/社媒素人app宣传/SKILL.md
diff --git a/backend/internal/skills/builtin/穿搭上身试穿视频生成/SKILL.md b/backend/builtin/穿搭上身试穿视频生成/SKILL.md
similarity index 100%
rename from backend/internal/skills/builtin/穿搭上身试穿视频生成/SKILL.md
rename to backend/builtin/穿搭上身试穿视频生成/SKILL.md
diff --git a/backend/internal/skills/builtin/系列套图生成/SKILL.md b/backend/builtin/系列套图生成/SKILL.md
similarity index 100%
rename from backend/internal/skills/builtin/系列套图生成/SKILL.md
rename to backend/builtin/系列套图生成/SKILL.md
diff --git a/backend/internal/skills/builtin/系列弧光规划/SKILL.md b/backend/builtin/系列弧光规划/SKILL.md
similarity index 100%
rename from backend/internal/skills/builtin/系列弧光规划/SKILL.md
rename to backend/builtin/系列弧光规划/SKILL.md
diff --git a/backend/internal/skills/builtin/绿幕猫咪跳舞素材生成/SKILL.md b/backend/builtin/绿幕猫咪跳舞素材生成/SKILL.md
similarity index 100%
rename from backend/internal/skills/builtin/绿幕猫咪跳舞素材生成/SKILL.md
rename to backend/builtin/绿幕猫咪跳舞素材生成/SKILL.md
diff --git a/backend/internal/skills/builtin/脱口秀手艺/SKILL.md b/backend/builtin/脱口秀手艺/SKILL.md
similarity index 100%
rename from backend/internal/skills/builtin/脱口秀手艺/SKILL.md
rename to backend/builtin/脱口秀手艺/SKILL.md
diff --git a/backend/internal/skills/builtin/视听理论基础/SKILL.md b/backend/builtin/视听理论基础/SKILL.md
similarity index 100%
rename from backend/internal/skills/builtin/视听理论基础/SKILL.md
rename to backend/builtin/视听理论基础/SKILL.md
diff --git a/backend/internal/skills/builtin/视觉基调设计/SKILL.md b/backend/builtin/视觉基调设计/SKILL.md
similarity index 100%
rename from backend/internal/skills/builtin/视觉基调设计/SKILL.md
rename to backend/builtin/视觉基调设计/SKILL.md
diff --git a/backend/internal/skills/builtin/视觉提示词工程/SKILL.md b/backend/builtin/视觉提示词工程/SKILL.md
similarity index 100%
rename from backend/internal/skills/builtin/视觉提示词工程/SKILL.md
rename to backend/builtin/视觉提示词工程/SKILL.md
diff --git a/backend/internal/skills/builtin/角色精灵图动画产线/SKILL.md b/backend/builtin/角色精灵图动画产线/SKILL.md
similarity index 100%
rename from backend/internal/skills/builtin/角色精灵图动画产线/SKILL.md
rename to backend/builtin/角色精灵图动画产线/SKILL.md
diff --git a/backend/internal/skills/builtin/角色设计/SKILL.md b/backend/builtin/角色设计/SKILL.md
similarity index 100%
rename from backend/internal/skills/builtin/角色设计/SKILL.md
rename to backend/builtin/角色设计/SKILL.md
diff --git a/backend/internal/skills/builtin/角色锻造工坊/SKILL.md b/backend/builtin/角色锻造工坊/SKILL.md
similarity index 100%
rename from backend/internal/skills/builtin/角色锻造工坊/SKILL.md
rename to backend/builtin/角色锻造工坊/SKILL.md
diff --git a/backend/internal/skills/builtin/选包门房/SKILL.md b/backend/builtin/选包门房/SKILL.md
similarity index 100%
rename from backend/internal/skills/builtin/选包门房/SKILL.md
rename to backend/builtin/选包门房/SKILL.md
diff --git a/backend/internal/skills/builtin/顶级波普视觉广告导演/SKILL.md b/backend/builtin/顶级波普视觉广告导演/SKILL.md
similarity index 100%
rename from backend/internal/skills/builtin/顶级波普视觉广告导演/SKILL.md
rename to backend/builtin/顶级波普视觉广告导演/SKILL.md
diff --git a/backend/internal/skills/builtin/高能未来电子产品广告视频/SKILL.md b/backend/builtin/高能未来电子产品广告视频/SKILL.md
similarity index 100%
rename from backend/internal/skills/builtin/高能未来电子产品广告视频/SKILL.md
rename to backend/builtin/高能未来电子产品广告视频/SKILL.md
diff --git a/backend/internal/skills/seed/presets.json b/backend/internal/skills/seed/presets.json
index b33abcb82..c5f9f1cec 100644
--- a/backend/internal/skills/seed/presets.json
+++ b/backend/internal/skills/seed/presets.json
@@ -1,7 +1,7 @@
 {
   "version": 1,
   "updated": "2026-09-22",
-  "note": "技能目录来自 backend/internal/skills/builtin/ 下的 Markdown 技能包；此文件只保存场景组合，不保存技能正文。",
+  "note": "技能目录来自 backend/builtin/ 下的 Markdown 技能包；此文件只保存场景组合，不保存技能正文。",
   "presets": [
     {
       "presetId": "short-drama-starter",
diff --git a/backend/internal/skills/skills_builtin.go b/backend/internal/skills/skills_builtin.go
index 37fb218ef..7c0ab2a5a 100644
--- a/backend/internal/skills/skills_builtin.go
+++ b/backend/internal/skills/skills_builtin.go
@@ -1,7 +1,6 @@
 package skills
 
 import (
-	"embed"
 	"encoding/json"
 	"fmt"
 	"io/fs"
@@ -11,12 +10,12 @@ import (
 	"time"
 	"unicode/utf8"
 
+	builtinAssets "infinite-canvas/backend/builtin"
 	"infinite-canvas/backend/internal/kernel"
 	"infinite-canvas/backend/internal/model"
 )
 
-//go:embed builtin
-var builtinSkillFiles embed.FS
+var builtinSkillFiles = builtinAssets.FS
 
 type builtinSkillMetadata struct {
 	Name             string
@@ -81,7 +80,7 @@ func (s *Service) EnsureBuiltinSkills() error {
 func loadBuiltinSkillPackages(tombstones interface {
 	BuiltinSkillTombstoned(string) (bool, error)
 }) ([]builtinSkillPackage, error) {
-	entries, err := builtinSkillFiles.ReadDir("builtin")
+	entries, err := builtinSkillFiles.ReadDir(".")
 	if err != nil {
 		return nil, fmt.Errorf("读取内置技能目录失败: %w", err)
 	}
@@ -100,7 +99,7 @@ func loadBuiltinSkillPackages(tombstones interface {
 		}
 		seen[skillID] = struct{}{}
 
-		base := path.Join("builtin", skillID)
+		base := skillID
 		body, err := builtinSkillFiles.ReadFile(path.Join(base, "SKILL.md"))
 		if err != nil {
 			return nil, fmt.Errorf("读取内置技能 %s 入口文件失败: %w", skillID, err)
diff --git a/backend/internal/skills/skills_seed.go b/backend/internal/skills/skills_seed.go
index 55484e5ab..1370a6027 100644
--- a/backend/internal/skills/skills_seed.go
+++ b/backend/internal/skills/skills_seed.go
@@ -1,5 +1,5 @@
 package skills
 
-// Historical JSON seed definitions were migrated to builtin/<skill-id>/SKILL.md.
+// Historical JSON seed definitions were migrated to backend/builtin/<skill-id>/SKILL.md.
 // This file is intentionally kept as a migration marker so old package references
 // are easy to identify in downstream branches; it contains no runtime data.