docs: add breaking changes to unreleased changelog section

The scaffold rename, add/new removal, and .agents/ralphs/ path change
from 882f340 were missing from the changelog — users upgrading from
0.3.0 need to see these before the next release.

Co-authored-by: Ralphify <noreply@ralphify.co>

Author: 2 people

CHANGELOG.md

@@ -2,6 +2,24 @@
 
 All notable changes to ralphify are documented here.
 
+## Unreleased
+
+### Added
+
+- **Live agent output streaming (on by default, `p` toggles)** — when you run `ralph run` in an interactive terminal, the agent's stdout and stderr now stream live to the console as the agent produces them. Press `p` to silence the stream and `p` again to resume. The blocking agent path was refactored to line-stream both pipes through background reader threads that start before the prompt is written, so large prompts can no longer deadlock against a full OS pipe buffer. Live streaming is disabled automatically when the output is not a terminal (piped, redirected, or CI), so `ralph run ... | cat` and automated use are unaffected. When `--log-dir` is set, output is still captured to the log file and echoed after each iteration — live peek works the same way in that mode. Note: agents that repaint their own terminal UI (full-screen curses or TUI apps) are not supported because ralphify pipes their stdio; they will detect a non-TTY and fall back to plain output.
+
+### Changed
+
+- **`ralph init` renamed to `ralph scaffold`** — the command that creates a new ralph from a template is now `ralph scaffold`. Same behavior, clearer name.
+- **Installed ralphs moved from `.ralphify/ralphs/` to `.agents/ralphs/`** — `ralph run <name>` now looks for installed ralphs in `.agents/ralphs/` (project-level) and `~/.agents/ralphs/` (user-level). The old `.ralphify/ralphs/` path is no longer checked. If you have ralphs installed there, move them to `.agents/ralphs/`.
+
+### Removed
+
+- **`ralph add` removed** — ralph installation and package management has moved to [agr](https://github.com/computerlovetech/agr). Use `agr add owner/repo` to install ralphs from GitHub.
+- **`ralph new` removed** — use `ralph scaffold` to create ralphs from a template, or write the `RALPH.md` by hand.
+
+---
+
 ## 0.3.0 — 2026-03-24
 
 ### Added