feat(infra): rename packaging container to KNELCloudron-packaging and add TODO tracking

- Rename packaging container from tsys-cloudron-packaging to KNELCloudron-packaging
- Update image reference to git.knownelement.com/knel/knelcloudron-packaging:latest
- Add TODO.md with active tasks and backlog items
- Add todo-generate.sh and todo-update.sh helper scripts
- Update PackagingForCloudronWorkspace/README.md with workspace details

scripts/todo-generate.sh

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+CLONE_SCRIPT="PackagingForCloudronWorkspace/UpstreamVendor-Clone.sh"
+EXTRA_REPOS_FILE="PackagingForCloudronWorkspace/REPOS.txt"
+
+if [[ ! -f "$CLONE_SCRIPT" ]]; then
+  echo "Missing $CLONE_SCRIPT" >&2
+  exit 1
+fi
+
+repo_lines=$(awk '/^https?:\/\//{print $0}' "$CLONE_SCRIPT" | sed 's/#.*$//' | sed -n '/^https:\/\//p')
+if [[ -f "$EXTRA_REPOS_FILE" ]]; then
+  extra=$(sed -e 's/#.*$//' -e '/^\s*$/d' "$EXTRA_REPOS_FILE" | sed -n '/^https:\/\//p')
+else
+  extra=""
+fi
+
+all_urls=$(printf "%s\n%s\n" "$repo_lines" "$extra" | sed 's/.git$//' | sort -u)
+
+readarray -t urls <<< "$all_urls"
+
+now=$(date -Is)
+
+cat <<EOF
+# TODO: Cloudron Packaging Backlog
+
+Generated: $now
+
+Legend:
+- [ ] todo
+- [x] scaffolded in repo (not necessarily validated)
+
+Instructions:
+- Regenerate this file: `scripts/todo-update.sh`
+- All package work happens in containers (see README and AGENTS.md)
+
+## Backlog
+EOF
+
+for url in "${urls[@]}"; do
+  org_repo=${url#*://*/}
+  org=$(echo "$org_repo" | awk -F/ '{print $1}')
+  name=$(echo "$org_repo" | awk -F/ '{print $2}')
+  # Guess CloudronPackages directory from repo name (TitleCase, strip -/_)
+  guess_dir=$(echo "$name" | sed -E 's/[-_]+/ /g' | awk '{for(i=1;i<=NF;i++){ $i=toupper(substr($i,1,1)) substr($i,2)}; gsub(/ /,""); print}')
+  status="[ ]"
+  if [[ -f "CloudronPackages/${guess_dir}/CloudronManifest.json" ]]; then
+    status="[x]"
+  fi
+  printf "- %s %s — %s/%s\n" "$status" "$name" "$org" "$name"
+done
+