Sync from GitHub main: v0.1.1, v0.1.2, wiki sync

Squashes the work that landed on GitHub via PRs #2 (v0.1.1), #3
(v0.1.2), and #4 (wiki sync) into a single commit on Gitea so both
remotes converge. Content is identical to github/main; commit history
is split for branching reasons (Gitea was merged via PR #1 long ago,
GitHub used squash merges from then on, so the SHAs diverged).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.github/workflows/wiki-sync.yml

@@ -0,0 +1,27 @@
+name: Sync Wiki
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - 'docs/**'
+      - 'scripts/sync-wiki.ps1'
+      - '.github/workflows/wiki-sync.yml'
+  workflow_dispatch:
+
+jobs:
+  sync:
+    runs-on: windows-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Sync docs/ to GitHub wiki
+        shell: pwsh
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          $repo = '${{ github.repository }}'
+          $wikiUrl = "https://x-access-token:$env:GH_TOKEN@github.com/$repo.wiki.git"
+          ./scripts/sync-wiki.ps1 -WikiUrl $wikiUrl