refactor: CI optimization, logging improvements, and codebase formatting (#456)

* fix(db): remove unique constraint on folder to support multi-channel agents

* ci: implement automated skill drift detection and self-healing PRs

* fix: align registration logic with Gavriel's feedback and fix build/test issues from Daniel Mi

* style: conform to prettier standards for CI validation

* test: fix branch naming inconsistency in CI (master vs main)

* fix(ci): robust module resolution by removing file extensions in scripts

* refactor(ci): simplify skill validation by removing redundant combination tests

* style: conform skills-engine to prettier, unify logging in index.ts and cleanup unused imports

* refactor: extract multi-channel DB changes to separate branch

Move channel column, folder suffix logic, and related migrations
to feat/multi-channel-db-v2 for independent review. This PR now
contains only CI/CD optimizations, Prettier formatting, and
logging improvements.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

skills-engine/path-remap.ts

@@ -34,10 +34,7 @@ function toSafeProjectRelativePath(
   const root = path.resolve(projectRoot);
   const realRoot = fs.realpathSync(root);
   const resolved = path.resolve(root, candidatePath);
-  if (
-    !resolved.startsWith(root + path.sep) &&
-    resolved !== root
-  ) {
+  if (!resolved.startsWith(root + path.sep) && resolved !== root) {
     throw new Error(`Path remap escapes project root: "${candidatePath}"`);
   }
   if (resolved === root) {
@@ -99,9 +96,7 @@ export function resolvePathRemap(
 ): string {
   const projectRoot = process.cwd();
   const safeRelPath = toSafeProjectRelativePath(relPath, projectRoot);
-  const remapped =
-    remap[safeRelPath] ??
-    remap[relPath];
+  const remapped = remap[safeRelPath] ?? remap[relPath];
 
   if (remapped === undefined) {
     return safeRelPath;