# Direct postMessage paste injection

**Captured:** 2026-05-06 (auto-extracted from harness build of BUILD_SPEC v3 — embedded-claude-terminal)

## Why deferred

Was Phase 5b in v1 of the spec — would inject paths directly into the embedded terminal's input via postMessage to the bubbler script, instead of routing through the OS clipboard via Pasteboard's "Copy" button.

Skipped until clipboard friction is measured in actual use. The current path (drag → Pasteboard → Copy → ⌘V in terminal) requires three clicks; direct injection would be one. But adding a "type into the terminal as if I typed it" channel raises the threat surface (the bubbler currently only reads from the parent; this would let the parent write).

## Prior decisions
- BUILD_SPEC v3 §"Future work" item 2
- v1 of the spec had this as Phase 5b; deliberately removed in v3

## Status
- [ ] Pending: measure clipboard friction first. If JT finds the three-click flow tolerable, this stays deferred indefinitely.