docs: clarify scoped restack agent wording

doc/src/integrations/claude.md

@@ -83,7 +83,7 @@ stack-sync
 
 ### stack-restack
 
-Rebase all branches to ensure proper ancestry.
+Rebase branches with scoped or multi-stack targeting to ensure proper ancestry.
 
 ```bash
 stack-restack

internal/cli/integrations/agents.go

@@ -176,7 +176,7 @@ var stackSkillSummaries = []struct {
 	{"stack-modify", "Amend current branch commit"},
 	{"stack-plan", "Plan and create stack from uncommitted changes"},
 	{"stack-resolve", "Resolve rebase conflicts with AI assistance"},
-	{"stack-restack", "Rebase all branches in stack"},
+	{"stack-restack", "Rebase branches with scoped or multi-stack targeting"},
 	{"stack-review", "Apply PR review comments and mark resolved"},
 	{"stack-split", "Split changes between current and new child branch"},
 	{"stack-status", "View stack state and health"},

internal/cli/integrations/agents/templates/commands/stack-absorb.md

@@ -174,7 +174,7 @@ After successful absorb (all branches pass), use `AskUserQuestion`:
 - Question: "Changes absorbed successfully. What would you like to do next?"
 - Options:
   - label: "Restack to propagate (Recommended)"
-    description: "Rebase all branches to ensure consistency"
+    description: "Rebase affected branches to ensure consistency"
   - label: "Submit changes"
     description: "Push absorbed changes to update PRs"
   - label: "Done for now"

internal/cli/integrations/agents/templates/commands/stack-fix.md

@@ -244,7 +244,7 @@ After all issues are fixed and verification passes, use `AskUserQuestion`:
   - label: "Submit updates (Recommended)"
     description: "Push fixed branches to update PRs"
   - label: "Restack branches"
-    description: "Rebase all branches to ensure consistency"
+    description: "Rebase affected branches to ensure consistency"
   - label: "Done for now"
     description: "No follow-up action needed"
 

internal/cli/integrations/agents/templates/commands/stack-restack.md

@@ -1,5 +1,5 @@
 ---
-description: Rebase all branches to ensure proper ancestry
+description: Rebase branches with scoped or multi-stack targeting
 model: haiku
 allowed-tools: Bash(stackit:*), Bash(git:*), AskUserQuestion, Skill
 ---
@@ -13,7 +13,7 @@ allowed-tools: Bash(stackit:*), Bash(git:*), AskUserQuestion, Skill
 
 ## Task
 
-Rebase all branches in the stack to ensure proper parent-child ancestry.
+Rebase branches with the narrowest safe scope to ensure proper parent-child ancestry.
 
 **Preconditions** (check context above):
 - Must have clean working directory (no uncommitted changes)