# Maintainer Report — AGENT_TODO.md Done entry for AI cost/session-window work

**Date:** 2026-09-06
**Mode:** single-file convention edit (AGENT_TODO.md only); no commit; no gates.

## TL;DR

Drift: the AI cost & session-window work (OpenRouter 402 + AI_SESSION_TURNS) was finished but had no **Done** entry — a one-edit-per-commit convention violation. Fix: added ONE dated **Done** bullet at the TOP of the Done section (2026-09-06, above the existing same-day entries), ~5-8 lines, style-matched to existing entries. Corrected, validated against diff (2 insertions), report written. All constraints honored: touched ONLY `AGENT_TODO.md`, ran no gates, made no commit.

## Step 1: Verify facts before writing

Read `AgentsReport/architect/2026-09-06_ai-cost-window-design.md` (decisions, defaults, lazy resolution, scope) and `AgentsReport/builder/2026-09-06_ai-cost-window.md` (implementation + F1 hardening + verification numbers). Cross-checked reviewer `2026-09-06_f1-hardening-recheck.md` → Status **ACCEPT** (after `2026-09-06_ai-cost-window-review.md` → **CHANGES_REQUIRED**, 1 REQUIRED + 1 NOTE) → supports "Reviewer ACCEPT (twice)" with the CHANGES_REQUIRED→fixed flow.

Confirmed the Done-section convention from existing entries (line 6 "newest last", bullet `- **YYYY-MM-DD** — <title> …` wrapping one paragraph).

[DONE]

## Step 2: Insert the Done entry

Added one bullet at the top of the `## Done` section (`AGENT_TODO.md:45`), placing it **above** the existing `pos ai alias` same-day entry (per brief: "at the TOP of the Done section … above the existing same-day entries"). Covers:

- 402 root cause (no `max_tokens` sent; OpenRouter pre-bills worst-case 131072 vs 4511 balance) + user request to bound session to last-5.
- Architect decisions: `AI_MAX_TOKENS` (num, default 2048, cost cap) on OpenRouter `max_tokens` + Gemini `generationConfig.maxOutputTokens` (llamacpp skipped); `AI_SESSION_TURNS` (2 msgs/exchange; default 40 back-compat; 10 = last 5) resolved lazily in `session_push` (config loads after line-25 default); both registered in `bin/pos-ai` `# POS_CONFIG:` `@General` → `pos config ai`.
- Reviewer hardening (CHANGES_REQUIRED→fixed): unguarded env → jq `tonumber` (0/-5/010/abc) — both providers + `session_push` now guard `^[1-9][0-9]*$` fallback-to-default.
- Verified: fake-curl shim (16 provider-body + 12 session-window checks incl. 010-regression proof), gen idempotent, check OK, lint 0/0, test 17 files/299 green, Reviewer ACCEPT (twice). Tester round not run (user's call); permanent coverage = follow-up.

Line count: the bullet is ~6 wrapped display lines (single logical line / 2 added physical lines).

[DONE]

## Step 3: Validate the correction

`git diff --stat AGENT_TODO.md` → `1 file changed, 2 insertions(+)`; `git diff AGENT_TODO.md` shows only the one added logical line at the top of Done, no other files touched. Verified the entry is above the existing same-day `pos ai alias` entry and style-matches (bullet, `- **2026-09-06** —`, inline prose).

Per constraints: no gates run, no commit made.

[DONE]

## Handoff

Status: MAINTENANCE_COMPLETE (single-item task, fully satisfied)

Standard enforced: AGENT_TODO.md **Done** convention — move completed work into **Done** (dated) in the same-language form used by existing entries.

Files changed: `AGENT_TODO.md` (1 logical line added at top of Done).

Verification: `git diff --stat` / `git diff` — 2 insertions only; correct placement + style confirmed by read.

Scope compliance: in-scope (AGENT_TODO.md only) — no other files, no gates, no commit.

Recommended next agent: Orchestrator (this edit rides the imminent commit; no further Maintainer action).

Reason: nothing else remains in scope; the entry is ready to be committed with the AI cost/session-window work.

Changes made by Maintainer: one **Done** entry added at the top of the Done section.