fix: invalidate worktree list cache after create and remove (#973)

* fix: invalidate worktree list cache after create and remove

After creating or removing a worktree, the list cache was not cleared,
so the UI would show stale data for up to 30 seconds.

* fix: normalize cache key in removeProjectWorktree

Greptile review caught that project.path was used raw while the cache
stores normalizePath(project.path), so the delete could silently miss
on paths with trailing slashes or backslashes.

packages/ui/src/lib/worktrees/worktreeManager.ts

@@ -246,7 +246,6 @@ export async function listProjectWorktrees(project: ProjectRef): Promise<Worktre
           projectDirectory: metadataProjectDirectory,
           branch: branch,
           label: branch || name || deriveSdkWorktreeNameFromDirectory(worktreePath),
-          // Phase 1 canonical fields
           worktreeRoot: canonical.worktreeRoot,
           worktreeStatus: canonical.worktreeStatus,
           headState: canonical.headState,
@@ -307,7 +306,6 @@ export async function createWorktree(project: ProjectRef, args: CreateWorktreeAr
     projectDirectory: metadataProjectDirectory,
     branch: returnedBranch,
     label: returnedBranch || returnedName,
-    // Phase 1 canonical fields
     worktreeRoot: normalizePath(returnedPath),
     worktreeStatus: 'ready',
     headState: returnedBranch ? 'branch' : 'unborn',
@@ -316,6 +314,8 @@ export async function createWorktree(project: ProjectRef, args: CreateWorktreeAr
 
   markWorktreeBootstrapPending(metadata.path);
 
+  _worktreeListCache.delete(projectDirectory);
+
   return metadata;
 }
 
@@ -345,6 +345,8 @@ export async function removeProjectWorktree(project: ProjectRef, worktree: Workt
 
   clearWorktreeBootstrapState(worktree.path);
 
+  _worktreeListCache.delete(normalizePath(project.path));
+
   const branchName = (worktree.branch || '').replace(/^refs\/heads\//, '').trim();
   if (deleteRemote && branchName) {
     await deleteRemoteBranch(projectDirectory, { branch: branchName, remote: remoteName }).catch(() => undefined);