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/rebase.ts

@@ -27,9 +27,7 @@ function walkDir(dir: string, root: string): string[] {
   return results;
 }
 
-function collectTrackedFiles(
-  state: ReturnType<typeof readState>,
-): Set<string> {
+function collectTrackedFiles(state: ReturnType<typeof readState>): Set<string> {
   const tracked = new Set<string>();
 
   for (const skill of state.applied_skills) {
@@ -119,11 +117,7 @@ export async function rebase(newBasePath?: string): Promise<RebaseResult> {
       }
 
       // Save combined patch
-      const patchPath = path.join(
-        projectRoot,
-        NANOCLAW_DIR,
-        'combined.patch',
-      );
+      const patchPath = path.join(projectRoot, NANOCLAW_DIR, 'combined.patch');
       fs.writeFileSync(patchPath, combinedPatch, 'utf-8');
 
       if (newBasePath) {