niri: drop untracked noctalia.kdl include; sync memory skills

- remove 'include noctalia.kdl' from shared config.kdl: the file is a
  per-host noctalia template render (colors from local palette), was
  never committed, and made every config load fail hard on hosts where
  it was absent — niri 26.04 falls back to DEFAULT config on parse
  error, silently killing keybinds/rules/layout/autostart
- theme integration now only via keybinds (noctalia msg verbs) + the
  host-local rendered files (see managed skill noctalia-template-offline-render)
- sync agent memories: delete retired memory-store skills, add new ones

agent/memories/--home-dank-.omp--/skills/git_workflow_omp/SKILL.md

@@ -0,0 +1 @@
+Standard Git workflow for `~/.omp`. Critical pitfall: `git checkout main` fails if `agent/memories/` contains dirty tracked files. Always run `git stash` before checkout. Stash saves on the source branch. PR creation uses `pr/fix-<feature>` branches. Gitea at `dankclaw:3000`.

agent/memories/--home-dank-.omp--/skills/git_workflow_omp/examples/stash_retrieve_example.md

@@ -0,0 +1,5 @@
+Workflow for interrupted config edits:
+1. Edit files in `develop`
+2. `git stash` before switching to `main`
+3. Commit on `develop`, apply stash later
+4. Resolves dirty-file checkout block cleanly.

agent/memories/--home-dank-.omp--/skills/git_workflow_omp/scripts/safe_checkout.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+# Safe checkout for ~/.omp with memory directory awareness
+set -euo pipefail
+if ! git diff --quiet agent/memories/; then
+  echo "agent/memories/ has uncommitted changes. Stashing..."
+  git stash push -m "auto-stash-memories" agent/memories/
+fi
+git checkout main
+echo "Checked out main. Stash available on develop if needed."

agent/memories/--home-dank-.omp--/skills/git_workflow_omp/templates/pr_template.md

@@ -0,0 +1,5 @@
+## PR: <feature-fix>
+- Branch: `pr/fix-<feature>`
+- Base: `main`
+- Scope: Single clean commit, focused change.
+- Notes: Verify `agent/memories/` stashed if dirty.