ci: wire publish workflow to auto-wiki tech pipeline

Add .gitea/workflows/publish.yml as a thin caller of
novoyuuparosk-auto-wiki publish-tech.yml@master (SOURCE_REF + --all),
matching the ncmr-songs / ses-light-novel pattern. Add .gitignore and
flesh out README to describe the publishing behaviour and categories.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.gitea/workflows/publish.yml

@@ -0,0 +1,16 @@
+on:
+  push:
+    branches: [master]
+    paths-ignore:
+      - "README.md"
+      - ".gitignore"
+      - ".gitkeep"
+      - ".claude/**"
+  workflow_dispatch:
+
+jobs:
+  publish:
+    uses: mikkeli/novoyuuparosk-auto-wiki/.gitea/workflows/publish-tech.yml@master
+    with:
+      SOURCE_REF: ${{ github.sha }}
+    secrets: inherit