feat: SEO improvements and npm publish prep

- Expand sitemap from 2 to 13 URLs (all docs pages)
- Update JSON-LD featureList with Anthropic, OpenCode, TypeScript SDK
- Update llms.txt with docs links, TS SDK, OpenCode plugin sections
- Add READMEs for agentlens-sdk and opencode-agentlens packages
- Add repository, homepage, author, bugs fields to both package.json

packages/opencode-plugin/README.md

@@ -0,0 +1,88 @@
+# opencode-agentlens
+
+OpenCode plugin for AgentLens — trace your coding agent's decisions, tool calls, and sessions.
+
+[![npm version](https://img.shields.io/npm/v/opencode-agentlens.svg)](https://www.npmjs.com/package/opencode-agentlens)
+[![license](https://img.shields.io/npm/l/opencode-agentlens.svg)](https://github.com/repi/agentlens/blob/main/LICENSE)
+
+## Requirements
+
+- OpenCode >= 1.1.0
+
+## Install
+
+```bash
+npm install opencode-agentlens
+```
+
+## Configuration
+
+### Environment Variables
+
+| Variable | Required | Default | Description |
+|---|---|---|---|
+| `AGENTLENS_API_KEY` | Yes | — | Your AgentLens API key. |
+| `AGENTLENS_ENDPOINT` | No | AgentLens cloud | API endpoint URL. |
+| `AGENTLENS_ENABLED` | No | `true` | Set to `false` to disable tracing. |
+| `AGENTLENS_CAPTURE_CONTENT` | No | `true` | Capture message and tool output content. |
+| `AGENTLENS_MAX_OUTPUT_LENGTH` | No | `10000` | Max characters to capture per output. |
+| `AGENTLENS_FLUSH_INTERVAL` | No | `5000` | Flush interval in milliseconds. |
+| `AGENTLENS_BATCH_SIZE` | No | `100` | Max items per batch before auto-flush. |
+
+### OpenCode Setup
+
+Add the plugin to your OpenCode configuration at `~/.config/opencode/opencode.json`:
+
+```json
+{
+  "plugins": [
+    {
+      "name": "agentlens",
+      "module": "opencode-agentlens"
+    }
+  ]
+}
+```
+
+Set your API key:
+
+```bash
+export AGENTLENS_API_KEY="your-api-key"
+```
+
+The plugin activates automatically when OpenCode starts. No code changes required.
+
+## What Gets Captured
+
+The plugin hooks into OpenCode's event system and records:
+
+- **Sessions** — Full session lifecycle from start to finish, including duration and metadata.
+- **Tool calls** — Every tool invocation with input arguments and output results (e.g., file reads, shell commands, code edits).
+- **LLM calls** — Chat messages sent to and received from the model, including token usage.
+- **Permission flows** — When the agent requests permission and whether it was granted or denied.
+- **File edits** — File paths and change summaries produced by the agent.
+
+All data is sent to your AgentLens instance where you can inspect traces, replay sessions, and analyze agent behavior.
+
+## How It Works
+
+The plugin registers handlers for OpenCode's event hooks:
+
+| Event | What is recorded |
+|---|---|
+| Session start/end | Trace lifecycle, session metadata |
+| `tool.execute.before` | Tool name, input arguments |
+| `tool.execute.after` | Tool output, duration, success/failure |
+| `chat.message` | LLM responses and assistant messages |
+| `chat.params` | Model parameters and prompt configuration |
+| `permission.ask` | Permission requests and user decisions |
+
+Each OpenCode session maps to a single AgentLens trace. Tool calls and LLM interactions become spans within that trace.
+
+## Documentation
+
+Full documentation: [agentlens.vectry.tech/docs/opencode-plugin](https://agentlens.vectry.tech/docs/opencode-plugin)
+
+## License
+
+MIT