Description

Fixes #126. macOS now watches registered roots recursively, avoiding FSEvents' watch-path limit; path additions use notify's batch API. Other platforms retain non-recursive directory selection. Existing handlers still enforce file eligibility and ignore rules.

Type of Change

• Bug fix

Testing

• Opt-in macOS regression: 5,000 directories, a directly contained root file, new subtree creation, edit, deletion, and an ignored file.
• Readiness improved from about 99 seconds to 0.84 seconds. A separate MCP probe observed create/edit/delete in 0.92/0.85/2.09 seconds.
• quick-check.sh and full-test.sh pass locally.

Checklist

• Guidelines followed; self-reviewed; no new warnings.
• No index-format or API changes.

The regression verifies persisted symbol changes, not just startup logs. Batching alone was insufficient above the native path limit.