Fix double shebang: remove shebang from TS source files (esbuild adds it)

src/hooks/cleanup-hook.ts

@@ -1,4 +1,3 @@
-#!/usr/bin/env node
 /**
  * Cleanup Hook - SessionEnd
  * Consolidated entry point + logic

src/hooks/context-hook.ts

@@ -1,4 +1,3 @@
-#!/usr/bin/env node
 /**
  * Context Hook - SessionStart
  * Consolidated entry point + logic (no try-catch bullshit)

src/hooks/new-hook.ts

@@ -1,4 +1,3 @@
-#!/usr/bin/env node
 /**
  * New Hook - UserPromptSubmit
  * Consolidated entry point + logic

src/hooks/save-hook.ts

@@ -1,4 +1,3 @@
-#!/usr/bin/env node
 /**
  * Save Hook - PostToolUse
  * Consolidated entry point + logic

src/hooks/summary-hook.ts

@@ -1,4 +1,3 @@
-#!/usr/bin/env node
 /**
  * Summary Hook - Stop
  * Consolidated entry point + logic