feat: skills system with toggle/inject, tab bar UX, streaming dedup fix

- Add skills toggle system: check skills in sidebar to inject with next message
- Auto-check default skills on new tab creation for first-message injection
- Track injected skills per tab with visual highlights in skills browser
- Redesign tab bar: double-click background for new tab, larger close button
- Update default system prompt
- Fix streaming text duplication: change WS callbacks from array to Set
- Fix biome config: exclude references/ directory
- Auto-format with biome

1 files changed, 1 insertions, 1 deletions

diff --git a/packages/api/src/agent-manager.ts b/packages/api/src/agent-manager.ts
index 0c95200..889142d 100644
--- a/packages/api/src/agent-manager.ts
+++ b/packages/api/src/agent-manager.ts
@@ -40,7 +40,7 @@ const TOOL_DESCRIPTIONS: Record<string, string> = {
 	task_list: "Manage a task list for tracking work items.",
 };
 
-const DEFAULT_SYSTEM_PROMPT = "You are Dispatch, a helpful AI coding assistant. Be concise and helpful.";
+const DEFAULT_SYSTEM_PROMPT = "You are Dispatch, an agent designed to help with any task that the user asks for. Be helpful and concise.";
 
 function buildSystemPrompt(toolNames: string[], basePrompt?: string): string {
 	const base = basePrompt || DEFAULT_SYSTEM_PROMPT;