AGENTS.md: parallel-development workflow section; SCOPE.md untracked

.gitignore

@@ -6,3 +6,4 @@ data/
 *.tsbuildinfo
 .env.local
 .memory/
+SCOPE.md

AGENTS.md

@@ -7,3 +7,19 @@ This version has breaking changes — APIs, conventions, and file structure may
 This block is written and re-added by `next dev` — verify at `node_modules/next/dist/server/lib/generate-agent-files.js`. Removing it from a diff only re-creates the uncommitted change; committing it with your work keeps the tree clean.
 
 <!-- END:nextjs-agent-rules -->
+
+<!-- BEGIN:lh-workflow -->
+
+# Workflow: you are one parallel development stream
+
+This repo is developed in parallel using git worktrees. You are one stream; the master session merges.
+
+- **Read `SCOPE.md` at the repo root first** — it holds your mission, your dev-server port, your owned files, and your done-protocol. It is untracked (never commit it).
+- **Stay in your lane.** Only touch files SCOPE.md lists as yours. If work outside your lane is needed, write it up in your final summary instead of doing it.
+- **Gates before every commit:** `npm run typecheck` and `npm test` and `npm run lint` all pass; `npm run build` before declaring done.
+- **Dev server:** always `PORT=<your SCOPE.md port> npm run dev` — port 3000 belongs to the master tree and Next refuses to start a second server on it.
+- `.env.local` is a symlink to the master tree's copy (secrets only — never edit it). Models + reasoning budgets live in `config.ts` MODELS.
+- Your `data/` is disposable scratch (chat records + graph ledgers). The master tree holds the real data. Never copy data between trees.
+- **Don't merge yourself.** When your wave is done: stop, summarize (what changed, what you deliberately didn't touch, open questions), and wait for the master to merge and rebase you.
+
+<!-- END:lh-workflow -->