Add UPSTREAMS registry and register knowledge-base, zlh-grind, and zlh-agent

UPSTREAMS.md

@@ -0,0 +1,23 @@
+# Upstreams – zlh-grind
+
+This repository tracks GPT execution work across upstream projects.
+
+## Rules
+- This file is a registry of upstream repos used during execution.
+- Do not duplicate canonical documentation here; link to it.
+
+---
+
+## ZeroLagHub Knowledge Base (Canonical)
+- Repo: `https://git.zerolaghub.com/jester/knowledge-base`
+- Role: Canonical architecture, decisions, procedures, handovers
+
+## zlh-grind (Execution Ledger)
+- Repo: `https://git.zerolaghub.com/jester/zlh-grind`
+- Role: GPT execution notes, session logs, drift prevention
+
+## zlh-agent (Go Agent)
+- Repo: `https://git.zerolaghub.com/jester/zlh-agent`
+- Role: Agent runtime for provisioning/install/verify/start workflows
+- Notes: Tagged `v0.1.0-dev` as the first dev snapshot.
+