docs(ccli): add verification evidence

.sisyphus/evidence/task-2-labels-tests.txt

@@ -0,0 +1,7 @@
+Command: ddev exec php artisan test --filter=CcliLabelsTest
+Result: PASS
+Assertions: 71
+Tests: 55 passed
+
+Command: ddev exec ./vendor/bin/pint --test app/Support/CcliLabels.php tests/Unit/CcliLabelsTest.php
+Result: PASS

.sisyphus/evidence/task-2-normalize-unknown.txt

@@ -0,0 +1,6 @@
+Command: ddev exec php artisan tinker --execute="var_export([App\\Support\\CcliLabels::normalizeLabelName('Foobar'), App\\Support\\CcliLabels::normalizeLabelName('')]);"
+Result:
+array (
+  0 => 'Foobar',
+  1 => '',
+)

.sisyphus/notepads/ccli-songselect-import/learnings.md

@@ -59,3 +59,8 @@ ### Fixture Corpus Notes
 - Keep fixture titles/artists anonymized and numeric (`Test Song N`, `Test Artist N`)
 - Include both English and German section labels in the corpus so parser regex coverage stays broad
 - Add edge cases for missing footer pieces, whitespace, repeat markers, and suffix labels (`2a`, `x2`, `(Repeat)`)
+
+### 2026-05-10 CCLI Label Utility Notes
+- `CcliLabels` works best with a fixed kind list in regexes; no locale config needed for EN/DE normalization.
+- `normalizeLabelName()` should map only known German kinds and preserve any numeric suffix.
+- `parseLabel()` can stay lightweight by returning `null` for non-labels and a small array for matched labels.