docs: simplify ralph smoke instructions

Author: gmickel

AGENTS.md

@@ -7,15 +7,3 @@
   - `scripts/ralph-smoke.sh --dir /tmp/flow-next-opencode-smoke.X`
   - `cd /tmp/flow-next-opencode-smoke.X`
   - `./scripts/ralph/ralph_once.sh --watch`
-- Smoke test setup (Ralph):
-  - `TMP=$(mktemp -d /tmp/flow-next-opencode-smoke.XXXXXX)`
-  - `git clone /Users/gordon/work/flow-next-opencode "$TMP" && cd "$TMP"`
-  - `git checkout -B main`
-  - `./install.sh --project "$PWD"` # refresh .opencode
-  - `mkdir -p scripts/ralph/runs`
-  - `cp -R .opencode/skill/flow-next-opencode-ralph-init/templates/. scripts/ralph/`
-  - `cp .opencode/skill/flow-next-opencode-ralph-init/templates/.gitignore scripts/ralph/`
-  - `cp .opencode/bin/flowctl .opencode/bin/flowctl.py scripts/ralph/`
-  - `chmod +x scripts/ralph/ralph.sh scripts/ralph/ralph_once.sh scripts/ralph/flowctl`
-  - `sed -i '' -e 's/{{PLAN_REVIEW}}/opencode/' -e 's/{{WORK_REVIEW}}/opencode/' scripts/ralph/config.env`
-  - Acceptance file content: checklist only (no `## Acceptance` heading; flowctl adds it)