feat: add OpenProse plugin skills

extensions/open-prose/skills/prose/examples/45-plugin-release.prose

@@ -0,0 +1,159 @@
+# Complete Plugin Release
+# A thorough release process that does more than we'd do manually
+
+input release_type: "Optional: 'major', 'minor', 'patch', or empty for auto-detect"
+
+agent validator:
+  model: sonnet
+  prompt: "Validate code and documentation. Report issues clearly."
+  permissions:
+    read: ["**/*.prose", "**/*.md"]
+
+agent analyzer:
+  model: opus
+  prompt: "Analyze git history and determine release impact."
+  permissions:
+    bash: allow
+
+agent writer:
+  model: opus
+  prompt: "Write clear, concise release documentation."
+
+agent executor:
+  model: sonnet
+  permissions:
+    bash: allow
+    write: ["**/*.json", "**/*.md"]
+
+# ============================================================
+# Phase 1: Pre-flight checks (parallel - fail fast)
+# ============================================================
+
+parallel (on-fail: "fail-fast"):
+  examples_valid = session: validator
+    prompt: "Compile all .prose examples, report any syntax errors"
+    context: "skills/open-prose/examples/*.prose"
+
+  docs_complete = session: validator
+    prompt: "Verify README.md lists all example files that exist"
+    context: "skills/open-prose/examples/"
+
+  repo_clean = session: executor
+    prompt: "Check for uncommitted changes, correct branch"
+
+  no_duplicate = session: executor
+    prompt: "List existing version tags"
+
+if **pre-flight issues found**:
+  throw "Pre-flight failed - fix issues before release"
+
+# ============================================================
+# Phase 2: Analyze what's being released
+# ============================================================
+
+let last_tag = session: executor
+  prompt: "Get most recent version tag"
+
+let commits = session: analyzer
+  prompt: "Get all commits since last release"
+  context: last_tag
+
+let impact = session: analyzer
+  prompt: """
+    Analyze these commits. Categorize:
+    - Breaking changes (API/contract changes)
+    - Features (new capabilities)
+    - Fixes (bug fixes, docs, refactors)
+  """
+  context: commits
+
+# ============================================================
+# Phase 3: Determine version
+# ============================================================
+
+let version = session: analyzer
+  prompt: """
+    Determine next version number.
+
+    Current: {last_tag}
+    Requested: {release_type}
+
+    Rules:
+    - Breaking changes → major bump
+    - New features → minor bump
+    - Fixes only → patch bump
+    - If release_type specified, use it (but warn if it contradicts impact)
+  """
+  context: impact
+
+if **version seems wrong for changes**:
+  input user_override: "Confirm version {version} is correct"
+
+# ============================================================
+# Phase 4: Generate release artifacts (parallel)
+# ============================================================
+
+parallel:
+  changelog_entry = session: writer
+    prompt: "Write CHANGELOG entry for this release"
+    context: { version, impact, commits }
+
+  release_notes = session: writer
+    prompt: "Write GitHub Release notes - concise, user-focused"
+    context: { version, impact }
+
+  commit_msg = session: writer
+    prompt: "Write commit message"
+    context: { version, impact }
+
+# ============================================================
+# Phase 5: Execute release
+# ============================================================
+
+try:
+  # Update files
+  let files_updated = session: executor
+    prompt: "Update plugin.json to {version}"
+
+  # Submodule release
+  let committed = session: executor
+    prompt: "Stage all, commit, tag v{version}, push with tags"
+    context: { files_updated, commit_msg }
+
+  # Parent repo
+  let parent_done = session: executor
+    prompt: "Update parent repo submodule reference, commit, push"
+    context: committed
+
+catch as err:
+  session: executor
+    prompt: "Rollback: delete local tag if created, reset commits"
+    context: err
+  throw "Release failed - rolled back"
+
+# ============================================================
+# Phase 6: Post-release (parallel)
+# ============================================================
+
+parallel (on-fail: "continue"):
+  gh_release = session: executor
+    prompt: "Create GitHub Release for v{version}"
+    context: release_notes
+
+  verified = session: executor
+    prompt: "Pull marketplace, verify plugin.json shows {version}"
+
+  install_test = session: validator
+    prompt: "Test fresh plugin installation works"
+
+# ============================================================
+# Output
+# ============================================================
+
+output release = {
+  version: version,
+  tag: "v{version}",
+  changelog: changelog_entry,
+  notes: release_notes,
+  verification: verified
+}