Sync agent instructions from main

sync-agent-instructions.ps1

@@ -1,79 +0,0 @@
-param(
-    [string]$Remote = "gitea",
-    [string]$MainBranch = "main"
-)
-
-$ErrorActionPreference = "Stop"
-
-# Verify remote exists.
-$remotes = git remote
-if ($remotes -notcontains $Remote) {
-    throw "Git remote '$Remote' does not exist. Available remotes: $($remotes -join ', ')"
-}
-
-Write-Host "Using remote: $Remote"
-Write-Host "Canonical branch: $MainBranch"
-
-# Update remote references.
-git fetch $Remote --prune
-
-# Update local main from the selected remote.
-git switch $MainBranch
-git pull --ff-only $Remote $MainBranch
-
-# Get all branches on this specific remote.
-$remotePrefix = "$Remote/"
-
-$branches = git for-each-ref `
-    --format="%(refname:short)" `
-    "refs/remotes/$Remote" |
-    Where-Object {
-        $_ -ne "$Remote/$MainBranch" -and
-        $_ -ne "$Remote/HEAD"
-    }
-
-foreach ($remoteBranch in $branches) {
-    # Remove "<remote>/" prefix while preserving branch names such as
-    # agent/foo/bar.
-    $branch = $remoteBranch.Substring($remotePrefix.Length)
-
-    Write-Host ""
-    Write-Host "Updating $branch..."
-
-    # Check whether the local branch already exists.
-    git show-ref --verify --quiet "refs/heads/$branch"
-
-    if ($LASTEXITCODE -eq 0) {
-        git switch $branch
-
-        # Make sure the local branch reflects the latest remote branch
-        # before modifying the instruction files.
-        git pull --ff-only $Remote $branch
-    }
-    else {
-        git switch --track -c $branch "$Remote/$branch"
-    }
-
-    # Force these files to exactly match canonical main.
-    git restore `
-        --source "$MainBranch" `
-        -- AGENTS.md PROJECT_GOAL.md
-
-    git add AGENTS.md PROJECT_GOAL.md
-
-    # Commit only when one of the files actually changed.
-    git diff --cached --quiet
-
-    if ($LASTEXITCODE -ne 0) {
-        git commit -m "Sync agent instructions from $MainBranch"
-        git push $Remote $branch
-    }
-    else {
-        Write-Host "Already up to date."
-    }
-}
-
-git switch $MainBranch
-
-Write-Host ""
-Write-Host "Finished synchronizing AGENTS.md and PROJECT_GOAL.md."