chore: rework plugin readmes, json changelogs and standalone repo setup

plugins/ai/CHANGELOG.json

@@ -0,0 +1,38 @@
+{
+  "$schema": "https://raw.githubusercontent.com/Termix-SSH/Termix/main/packages/plugin-sdk/schema/changelog.schema.json",
+  "releases": [
+    {
+      "version": "1.0.0",
+      "changes": [
+        {
+          "type": "added",
+          "text": "Ask about your hosts, snippets, fleets, alerts, automations and more"
+        },
+        {
+          "type": "added",
+          "text": "Proposes changes instead of making them, and nothing runs until you approve it"
+        },
+        {
+          "type": "added",
+          "text": "Can run safe read-only commands like `df` and `uptime` if you allow it"
+        },
+        {
+          "type": "added",
+          "text": "Ask about a host right from its terminal"
+        },
+        {
+          "type": "added",
+          "text": "Works with Ollama, Anthropic, OpenAI, Google Gemini and any OpenAI compatible endpoint"
+        },
+        {
+          "type": "added",
+          "text": "AI Agents: run Pi, OpenCode, Claude Code or Codex on an SSH host using one of your Termix providers, with tool approvals, queued messages, attachments, Git diffs and worktrees"
+        },
+        {
+          "type": "added",
+          "text": "One-click install of the selected agent and Node.js, and a button to set up SSH loopback forwarding"
+        }
+      ]
+    }
+  ]
+}