diff --git a/plugins/donegraph/skills/donegraph-capture/SKILL.md b/plugins/donegraph/skills/donegraph-capture/SKILL.md
index 1111aca..79adcbb 100644
--- a/plugins/donegraph/skills/donegraph-capture/SKILL.md
+++ b/plugins/donegraph/skills/donegraph-capture/SKILL.md
@@ -1,7 +1,7 @@
 ---
 name: donegraph-capture
 description: Automatically capture local project context into a clean-room DoneGraph collaboration graph.
-argument-hint: ["[--goal <goal>] [--platform codex|claude|cursor|generic]"]
+argument-hint: "[--goal <goal>] [--platform codex|claude|cursor|generic]"
 ---
 
 # /donegraph-capture
diff --git a/plugins/donegraph/skills/donegraph-checkpoint/SKILL.md b/plugins/donegraph/skills/donegraph-checkpoint/SKILL.md
index bcb0f8e..ed781e9 100644
--- a/plugins/donegraph/skills/donegraph-checkpoint/SKILL.md
+++ b/plugins/donegraph/skills/donegraph-checkpoint/SKILL.md
@@ -1,7 +1,7 @@
 ---
 name: donegraph-checkpoint
 description: Record a meaningful DoneGraph progress checkpoint for the current AI collaboration.
-argument-hint: ["<what changed> [--command <cmd>] [--path <file>]"]
+argument-hint: "<what changed> [--command <cmd>] [--path <file>]"
 ---
 
 # /donegraph-checkpoint
diff --git a/plugins/donegraph/skills/donegraph-dashboard/SKILL.md b/plugins/donegraph/skills/donegraph-dashboard/SKILL.md
index 9ce98fb..66db337 100644
--- a/plugins/donegraph/skills/donegraph-dashboard/SKILL.md
+++ b/plugins/donegraph/skills/donegraph-dashboard/SKILL.md
@@ -1,7 +1,7 @@
 ---
 name: donegraph-dashboard
 description: Build and open the local DoneGraph dashboard for the current project.
-argument-hint: ["[--no-open]"]
+argument-hint: "[--no-open]"
 ---
 
 # /donegraph-dashboard
diff --git a/plugins/donegraph/skills/donegraph-done/SKILL.md b/plugins/donegraph/skills/donegraph-done/SKILL.md
index fdb0d64..d00740a 100644
--- a/plugins/donegraph/skills/donegraph-done/SKILL.md
+++ b/plugins/donegraph/skills/donegraph-done/SKILL.md
@@ -1,7 +1,7 @@
 ---
 name: donegraph-done
 description: Record a DoneGraph completion milestone and regenerate handoff artifacts.
-argument-hint: ["<completion summary>"]
+argument-hint: "<completion summary>"
 ---
 
 # /donegraph-done
diff --git a/plugins/donegraph/skills/donegraph-proof/SKILL.md b/plugins/donegraph/skills/donegraph-proof/SKILL.md
index 5031b50..e49db5e 100644
--- a/plugins/donegraph/skills/donegraph-proof/SKILL.md
+++ b/plugins/donegraph/skills/donegraph-proof/SKILL.md
@@ -1,7 +1,7 @@
 ---
 name: donegraph-proof
 description: Record verification evidence in DoneGraph, including pass, fail, blocked, or unknown status.
-argument-hint: ["<proof text> --pass|--fail|--blocked|--unknown [--command <cmd>]"]
+argument-hint: "<proof text> --pass|--fail|--blocked|--unknown [--command <cmd>]"
 ---
 
 # /donegraph-proof
diff --git a/plugins/donegraph/skills/donegraph-recap/SKILL.md b/plugins/donegraph/skills/donegraph-recap/SKILL.md
index e22a274..dc34e8a 100644
--- a/plugins/donegraph/skills/donegraph-recap/SKILL.md
+++ b/plugins/donegraph/skills/donegraph-recap/SKILL.md
@@ -1,7 +1,7 @@
 ---
 name: donegraph-recap
 description: One-click session recap. AI-analyzes git history, runs checks, and generates a visual dashboard with narrative story, insights, and risks.
-argument-hint: ["[--last <n>] [--since <time>] [--lang en|zh]"]
+argument-hint: "[--last <n>] [--since <time>] [--lang en|zh]"
 ---
 
 # /donegraph-recap
diff --git a/plugins/donegraph/skills/donegraph-start/SKILL.md b/plugins/donegraph/skills/donegraph-start/SKILL.md
index 746f1a0..4f4cba6 100644
--- a/plugins/donegraph/skills/donegraph-start/SKILL.md
+++ b/plugins/donegraph/skills/donegraph-start/SKILL.md
@@ -1,7 +1,7 @@
 ---
 name: donegraph-start
 description: Start a DoneGraph collaboration session for the current project.
-argument-hint: ["<goal> [--platform codex|claude|cursor|generic]"]
+argument-hint: "<goal> [--platform codex|claude|cursor|generic]"
 ---
 
 # /donegraph-start
diff --git a/plugins/donegraph/skills/donegraph-summary/SKILL.md b/plugins/donegraph/skills/donegraph-summary/SKILL.md
index ea9b2d7..53ab5f4 100644
--- a/plugins/donegraph/skills/donegraph-summary/SKILL.md
+++ b/plugins/donegraph/skills/donegraph-summary/SKILL.md
@@ -1,7 +1,7 @@
 ---
 name: donegraph-summary
 description: Print the current DoneGraph collaboration summary and next handoff steps.
-argument-hint: [""]
+argument-hint: ""
 ---
 
 # /donegraph-summary
diff --git a/plugins/donegraph/skills/donegraph/SKILL.md b/plugins/donegraph/skills/donegraph/SKILL.md
index bfd4fa9..20b028d 100644
--- a/plugins/donegraph/skills/donegraph/SKILL.md
+++ b/plugins/donegraph/skills/donegraph/SKILL.md
@@ -1,7 +1,7 @@
 ---
 name: donegraph
 description: AI Accountability Infrastructure. Use /donegraph-recap to auto-summarize what this session accomplished with a visual dashboard, or use sub-commands to track progress step by step.
-argument-hint: ["recap|capture|start <goal>|checkpoint <text>|proof <text>|done <text>|dashboard|summary"]
+argument-hint: "recap|capture|start <goal>|checkpoint <text>|proof <text>|done <text>|dashboard|summary"
 ---
 
 # /donegraph