Pin LF line endings and renormalize the working tree

scripts/validate-char-count.js measures characters on disk, so a CRLF
checkout added ~1 char per line and pushed the 11k-budget prompt files over
the limit depending on how the repo was cloned. Pins eol=lf, marks binaries,
and renormalizes the files that had CRLF.

AI Assisted

plan2code-loop/src/spec/index.ts

@@ -1,4 +1,4 @@
-export {
-  detectSpecDirectories,
-  getSpecProgress,
-} from './utils.js';
+export {
+  detectSpecDirectories,
+  getSpecProgress,
+} from './utils.js';