Merge PR #117: cursor-agent provider

Adds a cursor-agent provider that reads sessions from
~/.cursor/projects/*/agent-transcripts/*.txt and joins against the
ai-code-tracking.db for model attribution, closing issue #55. Token
counts are estimated from transcript character length since neither the
transcript nor the attribution DB carries real counts, and every row
carries an (est.) label to surface that.

Contributed by @mvanhorn.

Author: iamtoruk

README.md

@@ -17,7 +17,7 @@
   <img src="https://raw.githubusercontent.com/getagentseal/codeburn/main/assets/dashboard.jpg" alt="CodeBurn TUI dashboard" width="620" />
 </p>
 
-By task type, tool, model, MCP server, and project. Supports **Claude Code**, **Codex** (OpenAI), **Cursor**, **OpenCode**, **Pi**, and **GitHub Copilot** with a provider plugin system. Tracks one-shot success rate per activity type so you can see where the AI nails it first try vs. burns tokens on edit/test/fix retries. Interactive TUI dashboard with gradient charts, responsive panels, and keyboard navigation. Native macOS menubar app in `mac/`. CSV/JSON export.
+By task type, tool, model, MCP server, and project. Supports **Claude Code**, **Codex** (OpenAI), **Cursor**, **cursor-agent**, **OpenCode**, **Pi**, and **GitHub Copilot** with a provider plugin system. Tracks one-shot success rate per activity type so you can see where the AI nails it first try vs. burns tokens on edit/test/fix retries. Interactive TUI dashboard with gradient charts, responsive panels, and keyboard navigation. Native macOS menubar app in `mac/`. CSV/JSON export.
 
 Works by reading session data directly from disk. No wrapper, no proxy, no API keys. Pricing from LiteLLM (auto-cached, all models supported).
 
@@ -108,6 +108,7 @@ codeburn report                      # all providers combined (default)
 codeburn report --provider claude    # Claude Code only
 codeburn report --provider codex     # Codex only
 codeburn report --provider cursor    # Cursor only
+codeburn report --provider cursor-agent  # cursor-agent CLI only
 codeburn report --provider opencode  # OpenCode only
 codeburn report --provider pi        # Pi only
 codeburn report --provider copilot   # GitHub Copilot only