<!-- ITERATION_LOG.md — TEMPLATE =========================== Per-iteration fix history, kept in the app directory: <variant>/<variant>-DATE/<backend>/results/chat-app-<ts>/ITERATION_LOG.md APPEND only — never overwrite. The fix agent appends a `## Iteration N` block after every fix cycle; the grader may add notes. The reprompt / iteration count here feeds the "iterations to done" investor metric, so keep exactly one `## Iteration N` block per fix cycle. `**Category:**` is one of: Feature Broken | Compilation/Build | Runtime/Crash | Integration | Data/State `**Redeploy:**` is one of: Client only | Server only | Both (spacetime: `spacetime publish` then restart client; postgres/mongodb: restart Express server and/or client) Delete this comment block in the real file. -->

Iteration Log

Run Info

• Backend: <spacetime | postgres | mongodb>
• Level: <N>
• Started: YYYY-MM-DDThh:mm:ss
• Run ID: <backend>-level<N>-<timestamp>

---

Build Notes

<!-- Environment / build workarounds that are NOT code reprompts. -->

<build issue title>

<what happened and how it was worked around>

Build: PASS

• Server tsc --noEmit: clean
• Client tsc --noEmit: clean
• Client vite build: success

---

Iteration 0 — Deploy (hh:mm)

Status: Deployed successfully

• Client dev server running at http://localhost:<vite-port>
• (postgres/mongodb) API server running at http://localhost:6001

Reprompts: 0 build reprompts

---

Iteration 1 — Fix (YYYY-MM-DD)

Category: Feature Broken (<count> bugs)

Bug 1: <title matching the BUG_REPORT bug>

• Root cause: <what was actually wrong>
• Fix: <what changed>
• Files changed: <file> (<function / section>)

Bug 2: <title>

• Root cause: <...>
• Fix: <...>
• Files changed: <file>

Redeploy: Client only | Server only | Both Server status: Client at http://localhost:<vite-port> ✓ <!-- (+ API at :6001 for postgres/mongodb) -->