fix: document blocktank plugin setup + ship marketplace manifest

Author: ovitrif

.claude/plugins/.claude-plugin/marketplace.json

@@ -0,0 +1,14 @@
+{
+  "name": "bitkit-android",
+  "owner": {
+    "name": "Synonym",
+    "email": "dev@synonym.to"
+  },
+  "plugins": [
+    {
+      "name": "blocktank-api",
+      "source": "./blocktank-api",
+      "description": "Interact with the Blocktank LSP API for Lightning testing during bitkit development."
+    }
+  ]
+}

.claude/plugins/blocktank-api/README.md

@@ -4,17 +4,16 @@ A Claude Code plugin that gives Claude knowledge of the full Blocktank LSP API,
 
 ## Setup
 
-Enable the plugin in `.claude/settings.local.json`:
-
-```json
-{
-  "enabledPlugins": {
-    "blocktank-api@blocktank-api": true
-  }
-}
+Run these two commands once from the repo root:
+
+```sh
+claude plugin marketplace add ./.claude/plugins --scope user
+claude plugin install blocktank-api@bitkit-android --scope user
 ```
 
-Then restart Claude Code. After restart the `/lsp` skill will be available.
+Then restart Claude Code if it was already running. The `blocktank-api:lsp` skill (invoked as `/lsp`) will be available.
+
+The repo ships a matching `.claude/settings.json` and `.claude/plugins/.claude-plugin/marketplace.json` so the two commands above resolve against committed, portable definitions — nothing to hand-edit. Verify with `claude plugin list | grep blocktank-api`.
 
 ## Usage
 

.claude/settings.json

@@ -0,0 +1,13 @@
+{
+  "extraKnownMarketplaces": {
+    "bitkit-android": {
+      "source": {
+        "source": "directory",
+        "path": "${CLAUDE_PROJECT_DIR}/.claude/plugins"
+      }
+    }
+  },
+  "enabledPlugins": {
+    "blocktank-api@bitkit-android": true
+  }
+}

README.md

@@ -62,6 +62,17 @@ The following IDE plugins are recommended for development with Android Studio or
 ```
 Reports are generated in: `app/build/reports/detekt/`.
 
+### AI tooling
+
+The repo ships a Claude Code plugin under `.claude/plugins/blocktank-api/` that gives Claude the `/lsp` skill for driving Blocktank LSP during local development. One-time setup after first clone:
+
+```sh
+claude plugin marketplace add ./.claude/plugins --scope user
+claude plugin install blocktank-api@bitkit-android --scope user
+```
+
+See [.claude/plugins/blocktank-api/README.md](.claude/plugins/blocktank-api/README.md) for usage and configuration.
+
 ## Test
 
 **Commands**