chore: update statusline ANSI color palette

- Replace blinking red (5;31m) with bold red (1;31m) for critical context bar
- Replace cyan metrics (36m) with sky blue (38;5;117m)
- Replace plain bold task (1m) with bold bright white (1;97m)
- Update test assertion to match new bold red code

tests/hooks/ecc-statusline.test.js

@@ -131,9 +131,9 @@ function runTests() {
   else failed++;
 
   if (
-    test('20% remaining contains red blink ANSI code', () => {
+    test('20% remaining contains bold red ANSI code', () => {
       const bar = buildContextBar(20);
-      assert.ok(bar.includes('\x1b[5;31m'), `Expected red blink ANSI in: ${JSON.stringify(bar)}`);
+      assert.ok(bar.includes('\x1b[1;31m'), `Expected bold red ANSI in: ${JSON.stringify(bar)}`);
     })
   )
     passed++;