feat: add plugin.json manifest for community marketplace

Author: goanpeca

CHANGELOG.md

@@ -17,6 +17,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   to full commit SHAs, checkout credentials are not persisted when unused, non-release
   workflows declare read-only token permissions, and release publishing uses the GitHub CLI
   instead of a third-party action in the write-token job.
+- `skills/b2-cloud-storage/.claude-plugin/plugin.json` plugin manifest, so the skill can be
+  submitted to the Anthropic community plugin marketplace and pass `claude plugin validate`.
+  Its `version` is kept in sync by `release.py` and enforced by `check_version.py`.
 
 ### Changed
 

scripts/check_version.py

@@ -11,6 +11,7 @@
     - .claude-plugin/marketplace.json    metadata.version
     - .claude-plugin/marketplace.json    plugins[].version  (every entry)
     - skills/b2-cloud-storage/SKILL.md   frontmatter metadata.version
+    - skills/b2-cloud-storage/.claude-plugin/plugin.json  version
 
 Used by .github/workflows/release.yml as the gate before building artifacts,
 and by humans before running `git tag` if they want belt-and-suspenders.
@@ -26,6 +27,7 @@
 REPO = Path(__file__).resolve().parent.parent
 MARKETPLACE = REPO / ".claude-plugin" / "marketplace.json"
 SKILL_MD = REPO / "skills" / "b2-cloud-storage" / "SKILL.md"
+PLUGIN_JSON = REPO / "skills" / "b2-cloud-storage" / ".claude-plugin" / "plugin.json"
 
 SKILL_VERSION_RE = re.compile(r'^\s*version:\s*"([^"]+)"', re.MULTILINE)
 
@@ -51,6 +53,9 @@ def collect_versions() -> dict[str, str]:
     m = SKILL_VERSION_RE.search(text)
     versions["SKILL.md metadata.version"] = m.group(1) if m else "<not found>"
 
+    plugin = json.loads(PLUGIN_JSON.read_text())
+    versions["plugin.json version"] = str(plugin.get("version", "<missing>"))
+
     return versions
 
 

scripts/release.py

@@ -18,6 +18,7 @@
 Updates version in:
   - skills/b2-cloud-storage/SKILL.md  (frontmatter `metadata.version`)
   - .claude-plugin/marketplace.json  (`metadata.version` and every `plugins[].version`)
+  - skills/b2-cloud-storage/.claude-plugin/plugin.json  (`version`)
 
 Rotates CHANGELOG.md:
   - Moves the body of `## [Unreleased]` into a new `## [X.Y.Z] - YYYY-MM-DD` section.
@@ -42,6 +43,7 @@
 REPO = Path(__file__).resolve().parent.parent
 SKILL_MD = REPO / "skills" / "b2-cloud-storage" / "SKILL.md"
 MARKETPLACE = REPO / ".claude-plugin" / "marketplace.json"
+PLUGIN_JSON = REPO / "skills" / "b2-cloud-storage" / ".claude-plugin" / "plugin.json"
 CHANGELOG = REPO / "CHANGELOG.md"
 
 SEMVER_RE = re.compile(r"^(\d+)\.(\d+)\.(\d+)$")
@@ -96,6 +98,12 @@ def update_marketplace_json(new_version: str) -> None:
     MARKETPLACE.write_text(json.dumps(data, indent=2) + "\n")
 
 
+def update_plugin_json(new_version: str) -> None:
+    data = json.loads(PLUGIN_JSON.read_text())
+    data["version"] = new_version
+    PLUGIN_JSON.write_text(json.dumps(data, indent=2) + "\n")
+
+
 def rotate_changelog(new_version: str, previous_version: str) -> bool:
     """Move `## [Unreleased]` body to a new `## [X.Y.Z] - YYYY-MM-DD` section.
 
@@ -199,10 +207,12 @@ def main() -> None:
 
     update_skill_md(new_version)
     update_marketplace_json(new_version)
+    update_plugin_json(new_version)
     print(f"  Updated  {SKILL_MD.relative_to(REPO)}")
     print(f"  Updated  {MARKETPLACE.relative_to(REPO)}")
+    print(f"  Updated  {PLUGIN_JSON.relative_to(REPO)}")
 
-    files_to_stage: list[Path] = [SKILL_MD, MARKETPLACE]
+    files_to_stage: list[Path] = [SKILL_MD, MARKETPLACE, PLUGIN_JSON]
     if not args.no_changelog and rotate_changelog(new_version, current):
         files_to_stage.append(CHANGELOG)
 

skills/b2-cloud-storage/.claude-plugin/plugin.json

@@ -0,0 +1,19 @@
+{
+  "name": "b2-cloud-storage",
+  "version": "1.2.0",
+  "description": "Manage Backblaze B2 cloud storage from the terminal: list, audit, cleanup, security review, and lifecycle.",
+  "author": {
+    "name": "Backblaze Labs",
+    "url": "https://github.com/backblaze-labs"
+  },
+  "homepage": "https://github.com/backblaze-labs/claude-skill-b2-cloud-storage",
+  "repository": "https://github.com/backblaze-labs/claude-skill-b2-cloud-storage",
+  "license": "MIT",
+  "keywords": [
+    "backblaze",
+    "b2",
+    "cloud-storage",
+    "object-storage",
+    "claude-skills"
+  ]
+}