Update SESSION_LOG.md - Add Dec 14 entry and expand Dec 20 with architecture reality and wire contract findings

SESSION_LOG.md

@@ -1,32 +1,39 @@
 # Session Log – zlh-grind
 
-## Session Dec 20, 2025 - Port Allocation & DNS Fix
+Append-only execution log for GPT working in ZeroLagHub environment.
-
-### ✅ Completed Fixes (zlh-api)
-1. **handlers/provisionGame.js** - Added `portsNeeded: portsNeeded || 1` (default port allocation)
-2. **provisionAgent.js** - Changed DB field `ports:` to `allocatedPorts:` (schema match)
-
-### ⚠️ DNS Bug Identified (NOT YET FIXED)
-**File:** `src/api/provisionAgent.js`
-**Problem:** Passing FQDN to EdgePublisher instead of SHORT hostname
-
-**Changes Needed:**
-1. Line 46: Delete `const ZONE = ...`
-2. Lines 330-331: Delete FQDN generation (`const slotHostname = ...`)
-3. Line 402: Change to `slotHostname: hostname,`
-
-**Impact:** Game provisioning works but DNS records not created
 
 ---
 
-## Session Dec 19, 2025 - Dev Container Split
+## 2025-12-14
-- Split provision.js into provisionAgent.js + handlers (provisionGame.js, provisionDev.js)
+- Goal: Stabilize zlh-agent provisioning pipeline for game + dev containers + addons without regressing game provisioning.
-- Added dev container support
+- Scope: Agent routing (ctype=dev), local artifacts strategy, addon skeleton, initial end-to-end tests.
-- INTRODUCED: FQDN bug in EdgePublisher call
+- Adopted single base template approach (zlh-agent template) where agent installs roles at runtime.
 
 ---
 
-## Session Dec 13, 2025 - Initial Implementation
+## 2025-12-20
-- Created zlh-api repository
+- Goal: Restore reliable end-to-end provisioning for **game + dev** without regressions; preserve the explicit orchestration steps/logging.
-- Agent-driven provisioning pipeline
+
-- All 6 Minecraft variants working
+### Current Architecture Reality (IMPORTANT)
+- We are on **single base template**: `AGENT_TEMPLATE_VMID` is the only template in `.env`.
+- In this workflow, **any zlh-agent code change requires rebuilding + pushing the binary into the template container**.
+  - That effectively means: **agent change = new template promotion**.
+
+### Key Findings / Fixes
+- Game provisioning steps are functioning again and show clear step-by-step orchestration output (allocate VMID → clone → configure → start → IP → agent config → wait → DB save → edge publish).
+- Dev provisioning failure was traced to a **wire contract mismatch** between API JSON and agent `state.Config` struct tags:
+  - Agent expects: `container_type` (snake_case) on the JSON wire
+  - API refactors were sending: `ctype` / `containerType` (camelCase) in some variants
+  - Result: `cfg.ContainerType == ""` on decode → agent routes into game path → errors like:
+    - `unsupported container identity (containerType="" game="")`
+
+### Decision (to minimize churn)
+- Because agent changes force a template promotion in this pipeline, the correct short-term move is:
+  - **Update API to emit `container_type`** to match the existing agent contract
+  - Avoid touching agent code until we intentionally rev the template
+
+### Operational Guardrails
+- Do NOT remove or "simplify" the explicit provisioning steps/logging; they are required for debugging and operator confidence.
+- Treat `container_type` as the canonical wire key until the next planned template rev.
+
+---