Add plugin builder for one-file client install

plugin/make-plugin.{sh,ps1} stamp a user's own Freshservice API key and the
shared server token into a template and emit a personalized freshservice.plugin
(direct HTTP MCP connection — no Node/mcp-remote/config editing on clients).
Built plugins embed credentials, so *.plugin is git-ignored; the committed
template holds only placeholders. Validated with 'claude plugin validate'.

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

plugin/template/.claude-plugin/plugin.json

@@ -0,0 +1,8 @@
+{
+  "name": "freshservice",
+  "version": "1.0.0",
+  "description": "Connect Claude to the PESCO Freshservice service desk — tickets, assets/CMDB, people, and changes/problems/releases — through the shared LAN MCP server, acting as your own agent identity.",
+  "author": {
+    "name": "Spencer McGuire"
+  }
+}

plugin/template/.mcp.json

@@ -0,0 +1,13 @@
+{
+  "mcpServers": {
+    "freshservice": {
+      "type": "http",
+      "url": "__SERVER_URL__",
+      "headers": {
+        "Authorization": "Bearer __MCP_TOKEN__",
+        "X-Freshservice-Domain": "__FS_DOMAIN__",
+        "X-Freshservice-Key": "__FS_KEY__"
+      }
+    }
+  }
+}

plugin/template/README.md

@@ -0,0 +1,20 @@
+# Freshservice plugin
+
+Connects Claude (Desktop / Cowork) to the PESCO Freshservice service desk
+through the shared MCP server on the LAN. Tickets, assets/CMDB, people, and
+change/problem/release records — with every action attributed to **your own**
+Freshservice agent account.
+
+## This file is personalized
+
+This plugin was generated by `make-plugin` and contains **your** Freshservice
+API key and the shared server token. Treat it like a password:
+
+- Do **not** share your `.plugin` file with anyone else — they would act as you.
+- If your key is exposed, regenerate it in Freshservice (Profile settings →
+  API key) and rebuild the plugin.
+
+## Requirements
+
+- You must be an agent in the PESCO Freshservice instance.
+- Your computer must be able to reach the LAN server (on-site network or VPN).