Update session start - subtraction-first mindset

SESSION_START.md

@@ -1,21 +1,11 @@
-# Session Start – GPT Execution Bootstrap
+# ZLH Session Start Checklist
 
-Before doing any implementation work in this session:
+Before making frontend changes:
 
-1. Read `CONSTRAINTS.md`
-2. Read `ANTI_DRIFT.md`
-3. Open `jester/knowledge-base` and review (as needed):
-   - `ZeroLagHub_Drift_Prevention_Card.md`
-   - `ZeroLagHub_Cross_Project_Tracker.md`
-   - `ZeroLagHub_GPT_Implementation_Handover_Dec2025.md`
-4. Read the latest entry in `SESSION_LOG.md`
-5. Confirm what the goal is for *this* session
+- Confirm Node.js 22 LTS
+- Confirm App Router structure
+- Review CONSTRAINTS.md
+- Review ANTI_DRIFT.md
+- Identify what can be removed before adding anything
 
-## Session Header Template
-Copy/paste this into the top of today’s entry in `SESSION_LOG.md`:
-
-- Date:
-- Goal:
-- Scope:
-- Explicit non-goals:
-- Canonical refs used:
+If unsure, stop and reassess.