Deploy Poimen Memory K8s cluster with ArgoCD tracking (M2.2, M3.5-M3.7)

tasks/M1.3-prompt-template.md

@@ -4,7 +4,7 @@
 |---|---|
 | Phase | M1 — Gated loop at L1 |
 | Size | M — 1–3 days |
-| Status | ⬜ Not started |
+| Status | ✅ Done |
 | Flags | — |
 | Spec | inlined below |
 | Blocks | M1.2 |
@@ -14,6 +14,30 @@
 Assemble the memory-agent prompt exactly as the paper specifies, because the
 model's ability to emit parseable gates depends on the format it was aligned to.
 
+## Files
+
+| Action | Path |
+|---|---|
+| Create | `crates/mem-core/src/prompt.rs` — `PromptBuilder` struct |
+| Modify | `crates/mem-core/src/lib.rs` — add `pub mod prompt;` |
+| Create | `templates/gru-mem.txt` — the prompt template (verbatim from paper Fig 10a) |
+| Create | `fixtures/expected/prompt-t1.txt` — golden file for turn 1 |
+| Create | `fixtures/expected/prompt-tn.txt` — golden file for turn N |
+| Create | `tests/it_prompt.rs` — integration tests (workspace root) |
+
+## Dependencies
+
+**None new.** No template engine — the prompt has 3 substitutions (`{prompt}`,
+`{memory}`, `{chunk}`). Use `str::replace()` or `format!()`. Adding `tera` for
+3 variables is overengineering.
+
+## Existing code to reuse
+
+- `Chunk` from `domain.rs` — render its `records` vec
+- `Role` from `domain.rs` — map to `[User]`, `[Assistant]`, `[ToolResult]`, `[System]` labels
+- `Query` from `query.rs` (M1.2) — read `query.question` for the `{prompt}` substitution
+- `TokenCounter` from `mem-chunk` — check assembled prompt fits budget
+
 ## Facts (inlined — no spec read needed)
 
 Paper Figure 10a, reproduced verbatim — this is the contract, not a starting
@@ -98,7 +122,7 @@ change to the contract.
 7. `a7_budget_headroom` — for the real fixture corpus, assert every assembled
    prompt is under 32768 minus 2048.
 
-**Command:** `cargo test -p mem-core prompt`
+**Command:** `cargo test --test it_prompt`
 
 **False pass:**
 - Asserting the prompt "contains" the question. A template that dropped the