fix(hooks): minor fixes across multiple hooks

Apply consistent naming and small improvements to atlas, background-compaction, claude-code-hooks, and non-interactive-env hooks.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/hooks/non-interactive-env/index.ts

@@ -37,7 +37,7 @@ export function createNonInteractiveEnvHook(_ctx: PluginInput) {
 
       const bannedCmd = detectBannedCommand(command)
       if (bannedCmd) {
-        output.message = `⚠️ Warning: '${bannedCmd}' is an interactive command that may hang in non-interactive environments.`
+        output.message = `Warning: '${bannedCmd}' is an interactive command that may hang in non-interactive environments.`
       }
 
       // Only prepend env vars for git commands (editor blocking, pager, etc.)